./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 448d4d75 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-448d4d7-m [2024-02-20 12:32:25,062 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 12:32:25,135 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 12:32:25,140 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 12:32:25,141 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 12:32:25,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 12:32:25,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 12:32:25,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 12:32:25,167 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 12:32:25,170 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 12:32:25,170 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 12:32:25,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 12:32:25,171 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 12:32:25,172 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 12:32:25,172 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 12:32:25,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 12:32:25,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 12:32:25,173 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 12:32:25,173 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 12:32:25,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 12:32:25,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 12:32:25,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 12:32:25,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 12:32:25,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 12:32:25,176 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 12:32:25,176 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 12:32:25,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 12:32:25,176 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 12:32:25,177 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 12:32:25,177 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 12:32:25,178 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 12:32:25,178 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 12:32:25,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:32:25,179 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 12:32:25,179 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 12:32:25,179 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 12:32:25,179 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 12:32:25,179 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 12:32:25,180 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 12:32:25,180 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 12:32:25,180 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 12:32:25,180 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 12:32:25,181 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 12:32:25,181 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfec19cb420bdcc992ee0af7789c6701a360457d4b79eebd70c54f4e314fbf3f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 12:32:25,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 12:32:25,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 12:32:25,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 12:32:25,452 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 12:32:25,453 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 12:32:25,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-02-20 12:32:26,594 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 12:32:26,769 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 12:32:26,770 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c [2024-02-20 12:32:26,776 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9720ad50/510f8ca5d9e64ce1913cd71db8f521c9/FLAG45518e004 [2024-02-20 12:32:26,787 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9720ad50/510f8ca5d9e64ce1913cd71db8f521c9 [2024-02-20 12:32:26,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 12:32:26,790 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 12:32:26,791 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 12:32:26,791 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 12:32:26,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 12:32:26,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:26,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4725e887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26, skipping insertion in model container [2024-02-20 12:32:26,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:26,813 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 12:32:26,953 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2024-02-20 12:32:26,957 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:32:26,964 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 12:32:26,978 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr-alt.wvr.c[2098,2111] [2024-02-20 12:32:26,979 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 12:32:26,991 INFO L206 MainTranslator]: Completed translation [2024-02-20 12:32:26,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26 WrapperNode [2024-02-20 12:32:26,991 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 12:32:26,992 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 12:32:26,992 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 12:32:26,993 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 12:32:26,998 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,020 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2024-02-20 12:32:27,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 12:32:27,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 12:32:27,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 12:32:27,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 12:32:27,030 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,032 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,042 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-20 12:32:27,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,048 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,049 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,050 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,051 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 12:32:27,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 12:32:27,052 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 12:32:27,052 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 12:32:27,053 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (1/1) ... [2024-02-20 12:32:27,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 12:32:27,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:27,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-02-20 12:32:27,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-02-20 12:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 12:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 12:32:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 12:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 12:32:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 12:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 12:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 12:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 12:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 12:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 12:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 12:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 12:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-20 12:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-20 12:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 12:32:27,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 12:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 12:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 12:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 12:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 12:32:27,143 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 12:32:27,247 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 12:32:27,249 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 12:32:27,383 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 12:32:27,384 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 12:32:27,527 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 12:32:27,528 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-02-20 12:32:27,558 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:32:27 BoogieIcfgContainer [2024-02-20 12:32:27,558 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 12:32:27,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 12:32:27,579 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 12:32:27,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 12:32:27,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 12:32:26" (1/3) ... [2024-02-20 12:32:27,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b24d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:32:27, skipping insertion in model container [2024-02-20 12:32:27,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 12:32:26" (2/3) ... [2024-02-20 12:32:27,583 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53b24d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:32:27, skipping insertion in model container [2024-02-20 12:32:27,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:32:27" (3/3) ... [2024-02-20 12:32:27,584 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr-alt.wvr.c [2024-02-20 12:32:27,615 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 12:32:27,616 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 12:32:27,616 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 12:32:27,642 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-20 12:32:27,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 22 transitions, 58 flow [2024-02-20 12:32:27,718 INFO L124 PetriNetUnfolderBase]: 2/20 cut-off events. [2024-02-20 12:32:27,718 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 12:32:27,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 2/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-02-20 12:32:27,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 22 transitions, 58 flow [2024-02-20 12:32:27,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 50 flow [2024-02-20 12:32:27,745 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 12:32:27,753 INFO L369 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3fd0b18f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 12:32:27,753 INFO L370 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-02-20 12:32:27,772 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 12:32:27,773 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-02-20 12:32:27,773 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-20 12:32:27,773 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:27,774 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:27,774 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:27,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:27,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1131420901, now seen corresponding path program 1 times [2024-02-20 12:32:27,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:27,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131977675] [2024-02-20 12:32:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:27,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131977675] [2024-02-20 12:32:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131977675] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:32:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:32:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:32:28,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370789835] [2024-02-20 12:32:28,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:32:28,123 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:32:28,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:28,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:32:28,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:32:28,174 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-02-20 12:32:28,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:28,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:28,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-02-20 12:32:28,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:28,265 INFO L124 PetriNetUnfolderBase]: 73/147 cut-off events. [2024-02-20 12:32:28,266 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-02-20 12:32:28,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 147 events. 73/147 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 510 event pairs, 32 based on Foata normal form. 10/154 useless extension candidates. Maximal degree in co-relation 235. Up to 97 conditions per place. [2024-02-20 12:32:28,270 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 19 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-02-20 12:32:28,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 26 transitions, 111 flow [2024-02-20 12:32:28,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:32:28,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:32:28,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-02-20 12:32:28,281 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-02-20 12:32:28,285 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 3 predicate places. [2024-02-20 12:32:28,285 INFO L507 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 111 flow [2024-02-20 12:32:28,286 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:28,286 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:28,286 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:28,287 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 12:32:28,287 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:28,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:28,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2123043355, now seen corresponding path program 1 times [2024-02-20 12:32:28,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:28,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468831737] [2024-02-20 12:32:28,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:28,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-20 12:32:28,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:28,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468831737] [2024-02-20 12:32:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468831737] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:32:28,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:32:28,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 12:32:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043969007] [2024-02-20 12:32:28,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:32:28,385 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 12:32:28,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:28,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 12:32:28,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-20 12:32:28,390 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-02-20 12:32:28,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 111 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:28,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:28,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-02-20 12:32:28,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:28,464 INFO L124 PetriNetUnfolderBase]: 92/188 cut-off events. [2024-02-20 12:32:28,464 INFO L125 PetriNetUnfolderBase]: For 68/72 co-relation queries the response was YES. [2024-02-20 12:32:28,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516 conditions, 188 events. 92/188 cut-off events. For 68/72 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 644 event pairs, 27 based on Foata normal form. 13/200 useless extension candidates. Maximal degree in co-relation 443. Up to 123 conditions per place. [2024-02-20 12:32:28,468 INFO L140 encePairwiseOnDemand]: 18/22 looper letters, 29 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2024-02-20 12:32:28,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 224 flow [2024-02-20 12:32:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 12:32:28,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 12:32:28,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-02-20 12:32:28,471 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-02-20 12:32:28,472 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 6 predicate places. [2024-02-20 12:32:28,472 INFO L507 AbstractCegarLoop]: Abstraction has has 30 places, 37 transitions, 224 flow [2024-02-20 12:32:28,473 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:28,473 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:28,473 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:28,474 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 12:32:28,474 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:28,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash -959904887, now seen corresponding path program 1 times [2024-02-20 12:32:28,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61263431] [2024-02-20 12:32:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:28,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:28,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:28,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61263431] [2024-02-20 12:32:28,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61263431] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:28,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235552703] [2024-02-20 12:32:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:28,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:28,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:28,960 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:29,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 12:32:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:29,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:32:29,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:29,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:29,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:29,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235552703] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:29,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:29,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:32:29,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753165802] [2024-02-20 12:32:29,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:29,770 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:32:29,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:29,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:32:29,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:32:29,816 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:29,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 37 transitions, 224 flow. Second operand has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:29,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:29,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:29,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:30,967 INFO L124 PetriNetUnfolderBase]: 414/726 cut-off events. [2024-02-20 12:32:30,967 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-02-20 12:32:30,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2589 conditions, 726 events. 414/726 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3072 event pairs, 24 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 2381. Up to 439 conditions per place. [2024-02-20 12:32:30,973 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 111 selfloop transitions, 70 changer transitions 16/198 dead transitions. [2024-02-20 12:32:30,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 198 transitions, 1505 flow [2024-02-20 12:32:30,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:32:30,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:32:30,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 252 transitions. [2024-02-20 12:32:30,976 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-02-20 12:32:30,977 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 33 predicate places. [2024-02-20 12:32:30,977 INFO L507 AbstractCegarLoop]: Abstraction has has 57 places, 198 transitions, 1505 flow [2024-02-20 12:32:30,977 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.916666666666667) internal successors, (118), 24 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:30,977 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:30,977 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:31,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-20 12:32:31,201 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:31,201 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:31,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:31,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2058927283, now seen corresponding path program 2 times [2024-02-20 12:32:31,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:31,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205084043] [2024-02-20 12:32:31,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:31,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:31,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:31,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205084043] [2024-02-20 12:32:31,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205084043] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:31,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365360853] [2024-02-20 12:32:31,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:32:31,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:31,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:31,441 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:31,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 12:32:31,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:32:31,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:31,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:32:31,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:31,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:31,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:32,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:32,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365360853] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:32,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:32,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:32:32,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452734754] [2024-02-20 12:32:32,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:32,024 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:32:32,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:32,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:32:32,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:32:32,041 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:32,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 198 transitions, 1505 flow. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:32,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:32,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:32,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:33,295 INFO L124 PetriNetUnfolderBase]: 639/1163 cut-off events. [2024-02-20 12:32:33,295 INFO L125 PetriNetUnfolderBase]: For 888/888 co-relation queries the response was YES. [2024-02-20 12:32:33,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5309 conditions, 1163 events. 639/1163 cut-off events. For 888/888 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5798 event pairs, 26 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 4890. Up to 730 conditions per place. [2024-02-20 12:32:33,312 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 202 selfloop transitions, 112 changer transitions 69/384 dead transitions. [2024-02-20 12:32:33,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 384 transitions, 3747 flow [2024-02-20 12:32:33,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-20 12:32:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-20 12:32:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 264 transitions. [2024-02-20 12:32:33,328 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-20 12:32:33,330 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 59 predicate places. [2024-02-20 12:32:33,330 INFO L507 AbstractCegarLoop]: Abstraction has has 83 places, 384 transitions, 3747 flow [2024-02-20 12:32:33,330 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:33,331 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:33,331 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:33,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-02-20 12:32:33,531 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-20 12:32:33,532 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:33,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:33,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1500325235, now seen corresponding path program 3 times [2024-02-20 12:32:33,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:33,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450875242] [2024-02-20 12:32:33,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:33,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:33,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:33,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450875242] [2024-02-20 12:32:33,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450875242] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:33,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489407951] [2024-02-20 12:32:33,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:32:33,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:33,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:33,801 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:33,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 12:32:33,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:32:33,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:33,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:32:33,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:34,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:34,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:34,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:34,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489407951] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:34,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:34,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:32:34,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037279559] [2024-02-20 12:32:34,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:34,483 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:32:34,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:32:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:32:34,494 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:34,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 384 transitions, 3747 flow. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:34,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:34,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:34,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:35,528 INFO L124 PetriNetUnfolderBase]: 707/1306 cut-off events. [2024-02-20 12:32:35,528 INFO L125 PetriNetUnfolderBase]: For 965/965 co-relation queries the response was YES. [2024-02-20 12:32:35,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 1306 events. 707/1306 cut-off events. For 965/965 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6900 event pairs, 20 based on Foata normal form. 2/1308 useless extension candidates. Maximal degree in co-relation 6728. Up to 838 conditions per place. [2024-02-20 12:32:35,537 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 206 selfloop transitions, 131 changer transitions 117/455 dead transitions. [2024-02-20 12:32:35,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 455 transitions, 5370 flow [2024-02-20 12:32:35,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-02-20 12:32:35,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-02-20 12:32:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 298 transitions. [2024-02-20 12:32:35,540 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42329545454545453 [2024-02-20 12:32:35,541 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 90 predicate places. [2024-02-20 12:32:35,541 INFO L507 AbstractCegarLoop]: Abstraction has has 114 places, 455 transitions, 5370 flow [2024-02-20 12:32:35,541 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:35,542 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:35,542 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:35,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:35,754 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:35,757 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:35,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1970331819, now seen corresponding path program 4 times [2024-02-20 12:32:35,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512861497] [2024-02-20 12:32:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:35,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:35,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512861497] [2024-02-20 12:32:35,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512861497] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937102975] [2024-02-20 12:32:35,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:32:35,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:35,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:35,968 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:35,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 12:32:36,022 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:32:36,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:36,023 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 12:32:36,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:36,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:36,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937102975] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:36,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:36,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 23 [2024-02-20 12:32:36,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449458773] [2024-02-20 12:32:36,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:36,628 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:32:36,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:36,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:32:36,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:32:36,652 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:36,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 455 transitions, 5370 flow. Second operand has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:36,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:36,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:36,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:38,504 INFO L124 PetriNetUnfolderBase]: 1084/2008 cut-off events. [2024-02-20 12:32:38,505 INFO L125 PetriNetUnfolderBase]: For 1351/1351 co-relation queries the response was YES. [2024-02-20 12:32:38,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13230 conditions, 2008 events. 1084/2008 cut-off events. For 1351/1351 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11608 event pairs, 12 based on Foata normal form. 4/2012 useless extension candidates. Maximal degree in co-relation 12368. Up to 1386 conditions per place. [2024-02-20 12:32:38,521 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 368 selfloop transitions, 251 changer transitions 193/813 dead transitions. [2024-02-20 12:32:38,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 813 transitions, 11234 flow [2024-02-20 12:32:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-02-20 12:32:38,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2024-02-20 12:32:38,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 383 transitions. [2024-02-20 12:32:38,525 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43522727272727274 [2024-02-20 12:32:38,527 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 129 predicate places. [2024-02-20 12:32:38,527 INFO L507 AbstractCegarLoop]: Abstraction has has 153 places, 813 transitions, 11234 flow [2024-02-20 12:32:38,527 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.791666666666667) internal successors, (115), 24 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:38,527 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:38,528 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:38,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:38,740 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:38,741 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:38,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:38,741 INFO L85 PathProgramCache]: Analyzing trace with hash -937903965, now seen corresponding path program 5 times [2024-02-20 12:32:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:38,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409585241] [2024-02-20 12:32:38,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:38,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:38,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:38,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409585241] [2024-02-20 12:32:38,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409585241] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:38,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358907460] [2024-02-20 12:32:38,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:32:38,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:38,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:38,820 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:38,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 12:32:38,870 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:32:38,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:38,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2024-02-20 12:32:38,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:38,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:38,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:38,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:38,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358907460] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:38,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:38,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-02-20 12:32:38,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786748578] [2024-02-20 12:32:38,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:38,942 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 12:32:38,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 12:32:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-02-20 12:32:38,943 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 22 [2024-02-20 12:32:38,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 813 transitions, 11234 flow. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:38,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:38,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 22 [2024-02-20 12:32:38,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:39,363 INFO L124 PetriNetUnfolderBase]: 1170/2141 cut-off events. [2024-02-20 12:32:39,364 INFO L125 PetriNetUnfolderBase]: For 2070/2070 co-relation queries the response was YES. [2024-02-20 12:32:39,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16044 conditions, 2141 events. 1170/2141 cut-off events. For 2070/2070 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12344 event pairs, 8 based on Foata normal form. 38/2179 useless extension candidates. Maximal degree in co-relation 15130. Up to 1504 conditions per place. [2024-02-20 12:32:39,389 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 538 selfloop transitions, 150 changer transitions 211/946 dead transitions. [2024-02-20 12:32:39,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 946 transitions, 14918 flow [2024-02-20 12:32:39,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 12:32:39,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 12:32:39,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-02-20 12:32:39,391 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5378787878787878 [2024-02-20 12:32:39,392 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 128 predicate places. [2024-02-20 12:32:39,392 INFO L507 AbstractCegarLoop]: Abstraction has has 152 places, 946 transitions, 14918 flow [2024-02-20 12:32:39,392 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 9 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:39,392 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:39,392 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:39,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:39,605 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:39,606 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:39,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:39,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1315000077, now seen corresponding path program 6 times [2024-02-20 12:32:39,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:39,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16604610] [2024-02-20 12:32:39,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:39,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:39,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:39,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16604610] [2024-02-20 12:32:39,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16604610] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:39,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029215819] [2024-02-20 12:32:39,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:32:39,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:39,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:39,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:39,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 12:32:39,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 12:32:39,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:39,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:32:39,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:40,037 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:40,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:40,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:40,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029215819] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:40,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:40,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:32:40,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733428477] [2024-02-20 12:32:40,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:40,468 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:32:40,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:40,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:32:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:32:40,481 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:40,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 946 transitions, 14918 flow. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:40,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:40,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:40,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:41,530 INFO L124 PetriNetUnfolderBase]: 1536/2823 cut-off events. [2024-02-20 12:32:41,531 INFO L125 PetriNetUnfolderBase]: For 2663/2663 co-relation queries the response was YES. [2024-02-20 12:32:41,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23985 conditions, 2823 events. 1536/2823 cut-off events. For 2663/2663 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 17616 event pairs, 12 based on Foata normal form. 3/2826 useless extension candidates. Maximal degree in co-relation 22768. Up to 2005 conditions per place. [2024-02-20 12:32:41,553 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 628 selfloop transitions, 324 changer transitions 314/1267 dead transitions. [2024-02-20 12:32:41,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 1267 transitions, 22491 flow [2024-02-20 12:32:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 12:32:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 12:32:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 195 transitions. [2024-02-20 12:32:41,555 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.42207792207792205 [2024-02-20 12:32:41,555 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 148 predicate places. [2024-02-20 12:32:41,556 INFO L507 AbstractCegarLoop]: Abstraction has has 172 places, 1267 transitions, 22491 flow [2024-02-20 12:32:41,556 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:41,556 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:41,556 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:41,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:41,768 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:41,769 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:41,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:41,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1652436821, now seen corresponding path program 7 times [2024-02-20 12:32:41,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:41,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959364680] [2024-02-20 12:32:41,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:41,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:41,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:41,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959364680] [2024-02-20 12:32:41,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959364680] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:41,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741243871] [2024-02-20 12:32:41,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:32:41,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:41,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:41,920 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:41,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 12:32:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:41,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:32:41,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:42,164 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:42,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741243871] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:42,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:42,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:32:42,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79563279] [2024-02-20 12:32:42,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:42,506 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:32:42,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:42,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:32:42,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:32:42,518 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:42,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 1267 transitions, 22491 flow. Second operand has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:42,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:42,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:42,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:43,883 INFO L124 PetriNetUnfolderBase]: 1653/3030 cut-off events. [2024-02-20 12:32:43,883 INFO L125 PetriNetUnfolderBase]: For 2840/2840 co-relation queries the response was YES. [2024-02-20 12:32:43,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28795 conditions, 3030 events. 1653/3030 cut-off events. For 2840/2840 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19025 event pairs, 12 based on Foata normal form. 2/3032 useless extension candidates. Maximal degree in co-relation 27437. Up to 2155 conditions per place. [2024-02-20 12:32:43,910 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 673 selfloop transitions, 380 changer transitions 364/1418 dead transitions. [2024-02-20 12:32:43,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 1418 transitions, 27975 flow [2024-02-20 12:32:43,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:32:43,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:32:43,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 242 transitions. [2024-02-20 12:32:43,912 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-02-20 12:32:43,913 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 175 predicate places. [2024-02-20 12:32:43,913 INFO L507 AbstractCegarLoop]: Abstraction has has 199 places, 1418 transitions, 27975 flow [2024-02-20 12:32:43,913 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:43,913 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:43,914 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:43,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:44,134 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:44,134 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:44,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:44,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1364567821, now seen corresponding path program 8 times [2024-02-20 12:32:44,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:44,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735166245] [2024-02-20 12:32:44,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:44,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:44,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735166245] [2024-02-20 12:32:44,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735166245] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:44,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416395457] [2024-02-20 12:32:44,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:32:44,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:44,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:44,373 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:44,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 12:32:44,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:32:44,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:44,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:32:44,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:44,622 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:45,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416395457] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:45,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:45,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:32:45,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527391247] [2024-02-20 12:32:45,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:45,049 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:32:45,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:45,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:32:45,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:32:45,062 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:45,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 1418 transitions, 27975 flow. Second operand has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:45,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:45,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:45,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:46,253 INFO L124 PetriNetUnfolderBase]: 1690/3110 cut-off events. [2024-02-20 12:32:46,253 INFO L125 PetriNetUnfolderBase]: For 3074/3074 co-relation queries the response was YES. [2024-02-20 12:32:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32670 conditions, 3110 events. 1690/3110 cut-off events. For 3074/3074 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19683 event pairs, 8 based on Foata normal form. 3/3113 useless extension candidates. Maximal degree in co-relation 31045. Up to 2215 conditions per place. [2024-02-20 12:32:46,273 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 701 selfloop transitions, 360 changer transitions 415/1477 dead transitions. [2024-02-20 12:32:46,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1477 transitions, 32070 flow [2024-02-20 12:32:46,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 12:32:46,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 12:32:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 184 transitions. [2024-02-20 12:32:46,275 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44019138755980863 [2024-02-20 12:32:46,275 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 193 predicate places. [2024-02-20 12:32:46,275 INFO L507 AbstractCegarLoop]: Abstraction has has 217 places, 1477 transitions, 32070 flow [2024-02-20 12:32:46,275 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.958333333333333) internal successors, (119), 24 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:46,276 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:46,276 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:46,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:46,487 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-02-20 12:32:46,488 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:46,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1602869077, now seen corresponding path program 9 times [2024-02-20 12:32:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:46,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727296699] [2024-02-20 12:32:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:46,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:46,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:46,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727296699] [2024-02-20 12:32:46,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727296699] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:46,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396809538] [2024-02-20 12:32:46,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:32:46,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:46,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:46,673 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:46,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 12:32:46,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 12:32:46,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:46,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:32:46,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:46,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:46,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:47,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396809538] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:47,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:47,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2024-02-20 12:32:47,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387450012] [2024-02-20 12:32:47,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:47,336 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-02-20 12:32:47,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:47,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-02-20 12:32:47,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2024-02-20 12:32:47,368 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:47,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 1477 transitions, 32070 flow. Second operand has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:47,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:47,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:47,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:49,090 INFO L124 PetriNetUnfolderBase]: 1749/3235 cut-off events. [2024-02-20 12:32:49,090 INFO L125 PetriNetUnfolderBase]: For 3027/3027 co-relation queries the response was YES. [2024-02-20 12:32:49,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37233 conditions, 3235 events. 1749/3235 cut-off events. For 3027/3027 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 20731 event pairs, 4 based on Foata normal form. 2/3237 useless extension candidates. Maximal degree in co-relation 35412. Up to 2320 conditions per place. [2024-02-20 12:32:49,114 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 711 selfloop transitions, 421 changer transitions 454/1587 dead transitions. [2024-02-20 12:32:49,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 1587 transitions, 37622 flow [2024-02-20 12:32:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 12:32:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 12:32:49,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 300 transitions. [2024-02-20 12:32:49,117 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40106951871657753 [2024-02-20 12:32:49,117 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 226 predicate places. [2024-02-20 12:32:49,117 INFO L507 AbstractCegarLoop]: Abstraction has has 250 places, 1587 transitions, 37622 flow [2024-02-20 12:32:49,118 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.875) internal successors, (117), 24 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:49,118 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:49,118 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:49,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:49,330 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:49,330 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:49,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:49,331 INFO L85 PathProgramCache]: Analyzing trace with hash -353106419, now seen corresponding path program 10 times [2024-02-20 12:32:49,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:49,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979523597] [2024-02-20 12:32:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:49,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:49,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:49,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:49,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979523597] [2024-02-20 12:32:49,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979523597] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:49,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101934603] [2024-02-20 12:32:49,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:32:49,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:49,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:49,497 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:49,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 12:32:49,551 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:32:49,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:49,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:32:49,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:49,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:49,749 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:50,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101934603] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:50,036 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:50,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2024-02-20 12:32:50,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747782083] [2024-02-20 12:32:50,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:50,037 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-02-20 12:32:50,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:50,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-02-20 12:32:50,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=501, Unknown=0, NotChecked=0, Total=650 [2024-02-20 12:32:50,066 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:50,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 1587 transitions, 37622 flow. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:50,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:50,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:50,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:51,439 INFO L124 PetriNetUnfolderBase]: 1784/3307 cut-off events. [2024-02-20 12:32:51,440 INFO L125 PetriNetUnfolderBase]: For 3192/3192 co-relation queries the response was YES. [2024-02-20 12:32:51,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41391 conditions, 3307 events. 1784/3307 cut-off events. For 3192/3192 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 21398 event pairs, 0 based on Foata normal form. 1/3308 useless extension candidates. Maximal degree in co-relation 39408. Up to 2390 conditions per place. [2024-02-20 12:32:51,475 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 682 selfloop transitions, 501 changer transitions 459/1643 dead transitions. [2024-02-20 12:32:51,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 1643 transitions, 42247 flow [2024-02-20 12:32:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-20 12:32:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-20 12:32:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 210 transitions. [2024-02-20 12:32:51,477 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-02-20 12:32:51,477 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 249 predicate places. [2024-02-20 12:32:51,477 INFO L507 AbstractCegarLoop]: Abstraction has has 273 places, 1643 transitions, 42247 flow [2024-02-20 12:32:51,478 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:51,478 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:51,478 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:51,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:51,715 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-20 12:32:51,715 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:51,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:51,715 INFO L85 PathProgramCache]: Analyzing trace with hash -404887773, now seen corresponding path program 11 times [2024-02-20 12:32:51,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:51,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080569886] [2024-02-20 12:32:51,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:51,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:51,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:51,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080569886] [2024-02-20 12:32:51,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080569886] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:51,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082890611] [2024-02-20 12:32:51,968 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:32:51,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:51,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:51,970 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:52,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 12:32:52,081 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:32:52,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:52,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 12:32:52,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:52,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:52,413 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:52,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:52,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082890611] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:52,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:52,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-02-20 12:32:52,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695638854] [2024-02-20 12:32:52,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:52,832 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-02-20 12:32:52,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:52,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-02-20 12:32:52,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2024-02-20 12:32:52,841 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:52,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 1643 transitions, 42247 flow. Second operand has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 36 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:52,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:52,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:52,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:32:56,570 INFO L124 PetriNetUnfolderBase]: 2027/3778 cut-off events. [2024-02-20 12:32:56,570 INFO L125 PetriNetUnfolderBase]: For 3838/3838 co-relation queries the response was YES. [2024-02-20 12:32:56,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51065 conditions, 3778 events. 2027/3778 cut-off events. For 3838/3838 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 24972 event pairs, 0 based on Foata normal form. 4/3782 useless extension candidates. Maximal degree in co-relation 48627. Up to 2761 conditions per place. [2024-02-20 12:32:56,600 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 847 selfloop transitions, 578 changer transitions 550/1976 dead transitions. [2024-02-20 12:32:56,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 1976 transitions, 54762 flow [2024-02-20 12:32:56,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-02-20 12:32:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2024-02-20 12:32:56,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 519 transitions. [2024-02-20 12:32:56,602 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3998459167950693 [2024-02-20 12:32:56,602 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 307 predicate places. [2024-02-20 12:32:56,602 INFO L507 AbstractCegarLoop]: Abstraction has has 331 places, 1976 transitions, 54762 flow [2024-02-20 12:32:56,603 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.694444444444445) internal successors, (169), 36 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:56,603 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:32:56,603 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:32:56,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-20 12:32:56,815 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-02-20 12:32:56,816 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:32:56,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:32:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2014402433, now seen corresponding path program 12 times [2024-02-20 12:32:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:32:56,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825118946] [2024-02-20 12:32:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:32:56,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:32:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:32:57,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:32:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825118946] [2024-02-20 12:32:57,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825118946] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:32:57,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293473840] [2024-02-20 12:32:57,026 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:32:57,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:32:57,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:32:57,028 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:32:57,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 12:32:57,106 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:32:57,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:32:57,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:32:57,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:32:57,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:57,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:32:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:32:57,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293473840] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:32:57,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:32:57,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:32:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510197220] [2024-02-20 12:32:57,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:32:57,877 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:32:57,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:32:57,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:32:57,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:32:57,911 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:32:57,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1976 transitions, 54762 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:32:57,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:32:57,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:32:57,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:33:04,737 INFO L124 PetriNetUnfolderBase]: 3006/5567 cut-off events. [2024-02-20 12:33:04,738 INFO L125 PetriNetUnfolderBase]: For 5569/5569 co-relation queries the response was YES. [2024-02-20 12:33:04,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80761 conditions, 5567 events. 3006/5567 cut-off events. For 5569/5569 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 38227 event pairs, 0 based on Foata normal form. 6/5573 useless extension candidates. Maximal degree in co-relation 77064. Up to 4160 conditions per place. [2024-02-20 12:33:04,790 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 1292 selfloop transitions, 1009 changer transitions 643/2945 dead transitions. [2024-02-20 12:33:04,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 2945 transitions, 87488 flow [2024-02-20 12:33:04,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2024-02-20 12:33:04,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2024-02-20 12:33:04,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 936 transitions. [2024-02-20 12:33:04,792 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37320574162679426 [2024-02-20 12:33:04,793 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 420 predicate places. [2024-02-20 12:33:04,793 INFO L507 AbstractCegarLoop]: Abstraction has has 444 places, 2945 transitions, 87488 flow [2024-02-20 12:33:04,793 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:04,793 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:33:04,794 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:33:04,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 12:33:05,005 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-02-20 12:33:05,006 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:33:05,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:33:05,006 INFO L85 PathProgramCache]: Analyzing trace with hash 539705669, now seen corresponding path program 13 times [2024-02-20 12:33:05,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:33:05,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455723541] [2024-02-20 12:33:05,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:33:05,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:33:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:33:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:05,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:33:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455723541] [2024-02-20 12:33:05,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455723541] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:33:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958116360] [2024-02-20 12:33:05,231 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:33:05,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:05,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:33:05,232 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:33:05,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 12:33:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:33:05,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:33:05,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:33:05,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:05,585 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:33:06,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:06,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958116360] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:33:06,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:33:06,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:33:06,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068383429] [2024-02-20 12:33:06,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:33:06,034 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:33:06,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:33:06,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:33:06,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:33:06,051 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:33:06,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 2945 transitions, 87488 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:06,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:33:06,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:33:06,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:33:12,150 INFO L124 PetriNetUnfolderBase]: 3060/5694 cut-off events. [2024-02-20 12:33:12,150 INFO L125 PetriNetUnfolderBase]: For 5610/5610 co-relation queries the response was YES. [2024-02-20 12:33:12,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88311 conditions, 5694 events. 3060/5694 cut-off events. For 5610/5610 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 39483 event pairs, 0 based on Foata normal form. 5/5699 useless extension candidates. Maximal degree in co-relation 84271. Up to 4258 conditions per place. [2024-02-20 12:33:12,207 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 1364 selfloop transitions, 956 changer transitions 701/3022 dead transitions. [2024-02-20 12:33:12,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 3022 transitions, 95869 flow [2024-02-20 12:33:12,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2024-02-20 12:33:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2024-02-20 12:33:12,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 693 transitions. [2024-02-20 12:33:12,213 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-02-20 12:33:12,213 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 499 predicate places. [2024-02-20 12:33:12,213 INFO L507 AbstractCegarLoop]: Abstraction has has 523 places, 3022 transitions, 95869 flow [2024-02-20 12:33:12,214 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:12,214 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:33:12,214 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:33:12,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-20 12:33:12,426 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-02-20 12:33:12,426 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:33:12,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:33:12,426 INFO L85 PathProgramCache]: Analyzing trace with hash -2122444471, now seen corresponding path program 14 times [2024-02-20 12:33:12,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:33:12,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633639626] [2024-02-20 12:33:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:33:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:33:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:33:12,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:12,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:33:12,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633639626] [2024-02-20 12:33:12,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633639626] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:33:12,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129088413] [2024-02-20 12:33:12,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:33:12,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:12,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:33:12,759 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:33:12,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 12:33:12,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:33:12,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:33:12,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:33:12,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:33:13,156 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:13,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:33:13,800 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:13,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129088413] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:33:13,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:33:13,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:33:13,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285659211] [2024-02-20 12:33:13,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:33:13,802 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:33:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:33:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:33:13,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:33:13,812 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:33:13,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 3022 transitions, 95869 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:13,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:33:13,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:33:13,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:33:19,569 INFO L124 PetriNetUnfolderBase]: 3392/6315 cut-off events. [2024-02-20 12:33:19,569 INFO L125 PetriNetUnfolderBase]: For 6414/6414 co-relation queries the response was YES. [2024-02-20 12:33:19,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104247 conditions, 6315 events. 3392/6315 cut-off events. For 6414/6414 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 44891 event pairs, 0 based on Foata normal form. 4/6319 useless extension candidates. Maximal degree in co-relation 99690. Up to 4751 conditions per place. [2024-02-20 12:33:19,643 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 1511 selfloop transitions, 1123 changer transitions 764/3399 dead transitions. [2024-02-20 12:33:19,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 3399 transitions, 114578 flow [2024-02-20 12:33:19,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-02-20 12:33:19,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2024-02-20 12:33:19,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 770 transitions. [2024-02-20 12:33:19,645 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3804347826086957 [2024-02-20 12:33:19,645 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 589 predicate places. [2024-02-20 12:33:19,645 INFO L507 AbstractCegarLoop]: Abstraction has has 613 places, 3399 transitions, 114578 flow [2024-02-20 12:33:19,646 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:19,646 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:33:19,646 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:33:19,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-20 12:33:19,857 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:19,858 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:33:19,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:33:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1040999717, now seen corresponding path program 15 times [2024-02-20 12:33:19,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:33:19,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9858978] [2024-02-20 12:33:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:33:19,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:33:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:33:20,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:20,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:33:20,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9858978] [2024-02-20 12:33:20,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9858978] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:33:20,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438428764] [2024-02-20 12:33:20,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:33:20,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:20,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:33:20,145 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:33:20,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 12:33:20,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:33:20,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:33:20,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:33:20,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:33:20,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:20,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:33:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:20,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438428764] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:33:20,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:33:20,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:33:20,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878243078] [2024-02-20 12:33:20,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:33:20,984 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:33:20,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:33:20,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:33:20,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:33:21,013 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:33:21,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 3399 transitions, 114578 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:21,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:33:21,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:33:21,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:33:27,521 INFO L124 PetriNetUnfolderBase]: 3723/6969 cut-off events. [2024-02-20 12:33:27,522 INFO L125 PetriNetUnfolderBase]: For 6667/6667 co-relation queries the response was YES. [2024-02-20 12:33:27,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122042 conditions, 6969 events. 3723/6969 cut-off events. For 6667/6667 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 50975 event pairs, 0 based on Foata normal form. 7/6976 useless extension candidates. Maximal degree in co-relation 116862. Up to 5294 conditions per place. [2024-02-20 12:33:27,600 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 1851 selfloop transitions, 1107 changer transitions 821/3780 dead transitions. [2024-02-20 12:33:27,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 3780 transitions, 135000 flow [2024-02-20 12:33:27,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2024-02-20 12:33:27,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2024-02-20 12:33:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 550 transitions. [2024-02-20 12:33:27,603 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36764705882352944 [2024-02-20 12:33:27,603 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 656 predicate places. [2024-02-20 12:33:27,603 INFO L507 AbstractCegarLoop]: Abstraction has has 680 places, 3780 transitions, 135000 flow [2024-02-20 12:33:27,603 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:27,603 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:33:27,604 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:33:27,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-20 12:33:27,815 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-20 12:33:27,815 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:33:27,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:33:27,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1718250591, now seen corresponding path program 16 times [2024-02-20 12:33:27,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:33:27,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849137847] [2024-02-20 12:33:27,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:33:27,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:33:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:33:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:28,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:33:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849137847] [2024-02-20 12:33:28,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849137847] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:33:28,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266835344] [2024-02-20 12:33:28,040 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:33:28,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:28,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:33:28,065 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:33:28,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 12:33:28,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:33:28,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:33:28,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 12:33:28,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:33:28,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:28,440 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:33:28,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:28,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266835344] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:33:28,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:33:28,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 34 [2024-02-20 12:33:28,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771503390] [2024-02-20 12:33:28,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:33:28,777 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-02-20 12:33:28,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:33:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-02-20 12:33:28,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1021, Unknown=0, NotChecked=0, Total=1190 [2024-02-20 12:33:28,793 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:33:28,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 680 places, 3780 transitions, 135000 flow. Second operand has 35 states, 35 states have (on average 4.742857142857143) internal successors, (166), 35 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:28,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:33:28,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:33:28,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:33:38,819 INFO L124 PetriNetUnfolderBase]: 4220/7988 cut-off events. [2024-02-20 12:33:38,819 INFO L125 PetriNetUnfolderBase]: For 7736/7736 co-relation queries the response was YES. [2024-02-20 12:33:38,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147762 conditions, 7988 events. 4220/7988 cut-off events. For 7736/7736 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 60990 event pairs, 0 based on Foata normal form. 6/7994 useless extension candidates. Maximal degree in co-relation 141581. Up to 6117 conditions per place. [2024-02-20 12:33:38,910 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 2043 selfloop transitions, 1438 changer transitions 906/4388 dead transitions. [2024-02-20 12:33:38,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 4388 transitions, 165534 flow [2024-02-20 12:33:38,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-02-20 12:33:38,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2024-02-20 12:33:38,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 755 transitions. [2024-02-20 12:33:38,914 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3730237154150198 [2024-02-20 12:33:38,915 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 747 predicate places. [2024-02-20 12:33:38,915 INFO L507 AbstractCegarLoop]: Abstraction has has 771 places, 4388 transitions, 165534 flow [2024-02-20 12:33:38,915 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.742857142857143) internal successors, (166), 35 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:38,915 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:33:38,915 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:33:38,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-02-20 12:33:39,128 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-20 12:33:39,128 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:33:39,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:33:39,129 INFO L85 PathProgramCache]: Analyzing trace with hash -28934561, now seen corresponding path program 17 times [2024-02-20 12:33:39,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:33:39,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285679472] [2024-02-20 12:33:39,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:33:39,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:33:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:33:39,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:39,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:33:39,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285679472] [2024-02-20 12:33:39,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285679472] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:33:39,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957465885] [2024-02-20 12:33:39,339 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:33:39,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:39,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:33:39,340 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:33:39,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 12:33:39,397 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:33:39,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:33:39,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:33:39,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:33:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:39,651 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:33:40,076 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:40,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957465885] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:33:40,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:33:40,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:33:40,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441766717] [2024-02-20 12:33:40,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:33:40,077 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:33:40,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:33:40,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:33:40,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=953, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:33:40,366 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:33:40,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 771 places, 4388 transitions, 165534 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:40,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:33:40,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:33:40,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:33:52,706 INFO L124 PetriNetUnfolderBase]: 4533/8636 cut-off events. [2024-02-20 12:33:52,707 INFO L125 PetriNetUnfolderBase]: For 8099/8099 co-relation queries the response was YES. [2024-02-20 12:33:52,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168204 conditions, 8636 events. 4533/8636 cut-off events. For 8099/8099 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 67409 event pairs, 0 based on Foata normal form. 5/8641 useless extension candidates. Maximal degree in co-relation 161076. Up to 6620 conditions per place. [2024-02-20 12:33:52,807 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 2374 selfloop transitions, 1411 changer transitions 969/4755 dead transitions. [2024-02-20 12:33:52,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 4755 transitions, 188918 flow [2024-02-20 12:33:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2024-02-20 12:33:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2024-02-20 12:33:52,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 805 transitions. [2024-02-20 12:33:52,818 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.36960514233241504 [2024-02-20 12:33:52,818 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 845 predicate places. [2024-02-20 12:33:52,818 INFO L507 AbstractCegarLoop]: Abstraction has has 869 places, 4755 transitions, 188918 flow [2024-02-20 12:33:52,819 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:52,819 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:33:52,819 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:33:52,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-20 12:33:53,031 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:53,033 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:33:53,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:33:53,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1937810275, now seen corresponding path program 18 times [2024-02-20 12:33:53,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:33:53,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811880483] [2024-02-20 12:33:53,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:33:53,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:33:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:33:53,203 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:53,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:33:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811880483] [2024-02-20 12:33:53,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811880483] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:33:53,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669266213] [2024-02-20 12:33:53,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:33:53,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:33:53,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:33:53,205 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:33:53,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 12:33:53,285 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-02-20 12:33:53,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:33:53,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:33:53,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:33:53,543 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:53,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:33:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:33:53,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669266213] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:33:53,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:33:53,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:33:53,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780224686] [2024-02-20 12:33:53,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:33:53,911 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:33:53,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:33:53,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:33:53,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=936, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:33:53,918 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:33:53,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 869 places, 4755 transitions, 188918 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:33:53,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:33:53,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:33:53,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:34:06,821 INFO L124 PetriNetUnfolderBase]: 4542/8669 cut-off events. [2024-02-20 12:34:06,821 INFO L125 PetriNetUnfolderBase]: For 8195/8195 co-relation queries the response was YES. [2024-02-20 12:34:06,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177526 conditions, 8669 events. 4542/8669 cut-off events. For 8195/8195 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 67824 event pairs, 0 based on Foata normal form. 7/8676 useless extension candidates. Maximal degree in co-relation 170029. Up to 6648 conditions per place. [2024-02-20 12:34:06,951 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 2464 selfloop transitions, 1322 changer transitions 1004/4791 dead transitions. [2024-02-20 12:34:06,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 911 places, 4791 transitions, 199938 flow [2024-02-20 12:34:06,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-02-20 12:34:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2024-02-20 12:34:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 371 transitions. [2024-02-20 12:34:06,953 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.39217758985200846 [2024-02-20 12:34:06,953 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 887 predicate places. [2024-02-20 12:34:06,953 INFO L507 AbstractCegarLoop]: Abstraction has has 911 places, 4791 transitions, 199938 flow [2024-02-20 12:34:06,953 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:34:06,954 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:34:06,954 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:34:06,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-20 12:34:07,169 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:07,170 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:34:07,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:34:07,170 INFO L85 PathProgramCache]: Analyzing trace with hash 835213983, now seen corresponding path program 19 times [2024-02-20 12:34:07,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:34:07,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363453183] [2024-02-20 12:34:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:34:07,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:34:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:34:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:07,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:34:07,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363453183] [2024-02-20 12:34:07,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363453183] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:34:07,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475351389] [2024-02-20 12:34:07,391 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:34:07,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:07,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:34:07,393 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:34:07,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 12:34:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:34:07,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:34:07,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:34:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:07,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:34:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:08,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475351389] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:34:08,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:34:08,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:34:08,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511144129] [2024-02-20 12:34:08,097 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:34:08,097 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:34:08,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:34:08,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:34:08,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:34:08,112 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:34:08,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 4791 transitions, 199938 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:34:08,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:34:08,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:34:08,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:34:26,199 INFO L124 PetriNetUnfolderBase]: 4910/9371 cut-off events. [2024-02-20 12:34:26,199 INFO L125 PetriNetUnfolderBase]: For 8862/8862 co-relation queries the response was YES. [2024-02-20 12:34:26,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201127 conditions, 9371 events. 4910/9371 cut-off events. For 8862/8862 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 74198 event pairs, 0 based on Foata normal form. 14/9385 useless extension candidates. Maximal degree in co-relation 192799. Up to 7191 conditions per place. [2024-02-20 12:34:26,319 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 2572 selfloop transitions, 1493 changer transitions 1103/5169 dead transitions. [2024-02-20 12:34:26,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 5169 transitions, 226085 flow [2024-02-20 12:34:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2024-02-20 12:34:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2024-02-20 12:34:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 749 transitions. [2024-02-20 12:34:26,321 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3782828282828283 [2024-02-20 12:34:26,322 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 966 predicate places. [2024-02-20 12:34:26,322 INFO L507 AbstractCegarLoop]: Abstraction has has 990 places, 5169 transitions, 226085 flow [2024-02-20 12:34:26,322 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:34:26,322 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:34:26,322 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:34:26,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-02-20 12:34:26,534 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:26,535 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:34:26,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:34:26,535 INFO L85 PathProgramCache]: Analyzing trace with hash 688047617, now seen corresponding path program 20 times [2024-02-20 12:34:26,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:34:26,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405211527] [2024-02-20 12:34:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:34:26,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:34:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:34:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:26,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:34:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405211527] [2024-02-20 12:34:26,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405211527] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:34:26,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684914907] [2024-02-20 12:34:26,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:34:26,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:26,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:34:26,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:34:26,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 12:34:26,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:34:26,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:34:26,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:34:26,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:34:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:27,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:34:27,418 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:27,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684914907] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:34:27,418 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:34:27,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:34:27,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062538150] [2024-02-20 12:34:27,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:34:27,419 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:34:27,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:34:27,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:34:27,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=924, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:34:27,434 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:34:27,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 990 places, 5169 transitions, 226085 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:34:27,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:34:27,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:34:27,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:34:45,550 INFO L124 PetriNetUnfolderBase]: 4919/9390 cut-off events. [2024-02-20 12:34:45,551 INFO L125 PetriNetUnfolderBase]: For 8628/8628 co-relation queries the response was YES. [2024-02-20 12:34:45,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210946 conditions, 9390 events. 4919/9390 cut-off events. For 8628/8628 co-relation queries the response was YES. Maximal size of possible extension queue 550. Compared 74359 event pairs, 0 based on Foata normal form. 3/9393 useless extension candidates. Maximal degree in co-relation 202273. Up to 7211 conditions per place. [2024-02-20 12:34:45,680 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 2474 selfloop transitions, 1584 changer transitions 1130/5189 dead transitions. [2024-02-20 12:34:45,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1075 places, 5189 transitions, 237345 flow [2024-02-20 12:34:45,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-02-20 12:34:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-02-20 12:34:45,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 720 transitions. [2024-02-20 12:34:45,682 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3761755485893417 [2024-02-20 12:34:45,683 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1051 predicate places. [2024-02-20 12:34:45,683 INFO L507 AbstractCegarLoop]: Abstraction has has 1075 places, 5189 transitions, 237345 flow [2024-02-20 12:34:45,683 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:34:45,683 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:34:45,683 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:34:45,695 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-02-20 12:34:45,895 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-02-20 12:34:45,895 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:34:45,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:34:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1249186307, now seen corresponding path program 21 times [2024-02-20 12:34:45,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:34:45,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646975118] [2024-02-20 12:34:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:34:45,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:34:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:34:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:46,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:34:46,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646975118] [2024-02-20 12:34:46,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646975118] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:34:46,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307551133] [2024-02-20 12:34:46,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:34:46,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:34:46,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:34:46,083 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:34:46,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-20 12:34:46,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:34:46,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:34:46,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:34:46,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:34:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:46,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:34:46,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:34:46,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307551133] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:34:46,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:34:46,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:34:46,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223619548] [2024-02-20 12:34:46,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:34:46,831 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:34:46,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:34:46,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:34:46,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:34:46,851 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:34:46,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1075 places, 5189 transitions, 237345 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:34:46,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:34:46,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:34:46,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:35:05,197 INFO L124 PetriNetUnfolderBase]: 4976/9496 cut-off events. [2024-02-20 12:35:05,197 INFO L125 PetriNetUnfolderBase]: For 8869/8869 co-relation queries the response was YES. [2024-02-20 12:35:05,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222917 conditions, 9496 events. 4976/9496 cut-off events. For 8869/8869 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 75338 event pairs, 0 based on Foata normal form. 7/9503 useless extension candidates. Maximal degree in co-relation 213926. Up to 7306 conditions per place. [2024-02-20 12:35:05,332 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 2556 selfloop transitions, 1540 changer transitions 1169/5266 dead transitions. [2024-02-20 12:35:05,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1158 places, 5266 transitions, 251408 flow [2024-02-20 12:35:05,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-02-20 12:35:05,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2024-02-20 12:35:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 722 transitions. [2024-02-20 12:35:05,347 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.386096256684492 [2024-02-20 12:35:05,358 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1134 predicate places. [2024-02-20 12:35:05,358 INFO L507 AbstractCegarLoop]: Abstraction has has 1158 places, 5266 transitions, 251408 flow [2024-02-20 12:35:05,359 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:05,359 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:05,359 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:35:05,375 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-02-20 12:35:05,571 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-02-20 12:35:05,571 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:35:05,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:05,571 INFO L85 PathProgramCache]: Analyzing trace with hash 28307687, now seen corresponding path program 22 times [2024-02-20 12:35:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:35:05,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970464833] [2024-02-20 12:35:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:35:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:06,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:06,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:35:06,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970464833] [2024-02-20 12:35:06,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970464833] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:35:06,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290738372] [2024-02-20 12:35:06,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:35:06,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:35:06,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:35:06,004 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:35:06,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-20 12:35:06,084 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:35:06,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:35:06,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:35:06,086 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:06,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:06,293 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:35:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:06,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290738372] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:35:06,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:35:06,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:35:06,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491172687] [2024-02-20 12:35:06,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:35:06,699 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:35:06,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:35:06,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:35:06,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:35:06,711 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:35:06,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1158 places, 5266 transitions, 251408 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:06,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:35:06,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:35:06,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:35:25,955 INFO L124 PetriNetUnfolderBase]: 5450/10392 cut-off events. [2024-02-20 12:35:25,955 INFO L125 PetriNetUnfolderBase]: For 9662/9662 co-relation queries the response was YES. [2024-02-20 12:35:25,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254286 conditions, 10392 events. 5450/10392 cut-off events. For 9662/9662 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 83872 event pairs, 0 based on Foata normal form. 4/10396 useless extension candidates. Maximal degree in co-relation 244409. Up to 8030 conditions per place. [2024-02-20 12:35:26,107 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 3006 selfloop transitions, 1534 changer transitions 1233/5774 dead transitions. [2024-02-20 12:35:26,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1226 places, 5774 transitions, 287202 flow [2024-02-20 12:35:26,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-02-20 12:35:26,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2024-02-20 12:35:26,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 609 transitions. [2024-02-20 12:35:26,109 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.40118577075098816 [2024-02-20 12:35:26,109 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1202 predicate places. [2024-02-20 12:35:26,110 INFO L507 AbstractCegarLoop]: Abstraction has has 1226 places, 5774 transitions, 287202 flow [2024-02-20 12:35:26,110 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:26,110 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:26,110 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:35:26,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-20 12:35:26,322 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:35:26,322 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:35:26,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash -854728921, now seen corresponding path program 23 times [2024-02-20 12:35:26,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:35:26,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571376642] [2024-02-20 12:35:26,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:26,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:35:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:26,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:35:26,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571376642] [2024-02-20 12:35:26,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571376642] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:35:26,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165284207] [2024-02-20 12:35:26,624 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:35:26,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:35:26,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:35:26,625 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:35:26,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-20 12:35:26,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:35:26,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:35:26,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:35:26,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:27,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:27,034 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:35:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165284207] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:35:27,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:35:27,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:35:27,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695150800] [2024-02-20 12:35:27,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:35:27,483 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:35:27,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:35:27,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:35:27,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=921, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:35:27,491 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:35:27,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1226 places, 5774 transitions, 287202 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:27,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:35:27,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:35:27,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:35:52,480 INFO L124 PetriNetUnfolderBase]: 5901/11328 cut-off events. [2024-02-20 12:35:52,480 INFO L125 PetriNetUnfolderBase]: For 10517/10517 co-relation queries the response was YES. [2024-02-20 12:35:52,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288197 conditions, 11328 events. 5901/11328 cut-off events. For 10517/10517 co-relation queries the response was YES. Maximal size of possible extension queue 699. Compared 93749 event pairs, 0 based on Foata normal form. 12/11340 useless extension candidates. Maximal degree in co-relation 276618. Up to 8755 conditions per place. [2024-02-20 12:35:52,652 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 3180 selfloop transitions, 1789 changer transitions 1327/6297 dead transitions. [2024-02-20 12:35:52,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1310 places, 6297 transitions, 325812 flow [2024-02-20 12:35:52,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-02-20 12:35:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2024-02-20 12:35:52,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 737 transitions. [2024-02-20 12:35:52,654 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3941176470588235 [2024-02-20 12:35:52,654 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1286 predicate places. [2024-02-20 12:35:52,654 INFO L507 AbstractCegarLoop]: Abstraction has has 1310 places, 6297 transitions, 325812 flow [2024-02-20 12:35:52,654 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:52,655 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:35:52,655 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:35:52,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-20 12:35:52,866 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:35:52,867 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:35:52,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:35:52,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1720177421, now seen corresponding path program 24 times [2024-02-20 12:35:52,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:35:52,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775373718] [2024-02-20 12:35:52,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:35:52,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:35:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:35:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:53,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:35:53,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775373718] [2024-02-20 12:35:53,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775373718] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:35:53,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883419278] [2024-02-20 12:35:53,111 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:35:53,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:35:53,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:35:53,113 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:35:53,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-20 12:35:53,195 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-02-20 12:35:53,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:35:53,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:35:53,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:35:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:53,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:35:53,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:35:53,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883419278] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:35:53,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:35:53,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:35:53,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400963303] [2024-02-20 12:35:53,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:35:53,912 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:35:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:35:53,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:35:53,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=934, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:35:53,925 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:35:53,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1310 places, 6297 transitions, 325812 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:35:53,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:35:53,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:35:53,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:36:29,484 INFO L124 PetriNetUnfolderBase]: 6424/12372 cut-off events. [2024-02-20 12:36:29,485 INFO L125 PetriNetUnfolderBase]: For 11450/11450 co-relation queries the response was YES. [2024-02-20 12:36:29,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327018 conditions, 12372 events. 6424/12372 cut-off events. For 11450/11450 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 104560 event pairs, 0 based on Foata normal form. 22/12394 useless extension candidates. Maximal degree in co-relation 313996. Up to 9578 conditions per place. [2024-02-20 12:36:29,674 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 3290 selfloop transitions, 2166 changer transitions 1445/6902 dead transitions. [2024-02-20 12:36:29,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1415 places, 6902 transitions, 370866 flow [2024-02-20 12:36:29,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2024-02-20 12:36:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2024-02-20 12:36:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 870 transitions. [2024-02-20 12:36:29,677 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3695836873406967 [2024-02-20 12:36:29,677 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1391 predicate places. [2024-02-20 12:36:29,677 INFO L507 AbstractCegarLoop]: Abstraction has has 1415 places, 6902 transitions, 370866 flow [2024-02-20 12:36:29,677 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:36:29,677 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:36:29,677 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:36:29,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-02-20 12:36:29,890 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-02-20 12:36:29,890 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:36:29,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:36:29,891 INFO L85 PathProgramCache]: Analyzing trace with hash 186847147, now seen corresponding path program 25 times [2024-02-20 12:36:29,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:36:29,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349251372] [2024-02-20 12:36:29,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:36:29,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:36:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:36:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:36:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:36:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349251372] [2024-02-20 12:36:30,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349251372] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:36:30,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838891779] [2024-02-20 12:36:30,092 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:36:30,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:36:30,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:36:30,094 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:36:30,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-02-20 12:36:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:36:30,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:36:30,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:36:30,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:36:30,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:36:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:36:30,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838891779] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:36:30,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:36:30,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:36:30,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109445436] [2024-02-20 12:36:30,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:36:30,978 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:36:30,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:36:30,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:36:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:36:31,014 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:36:31,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1415 places, 6902 transitions, 370866 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:36:31,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:36:31,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:36:31,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:37:13,186 INFO L124 PetriNetUnfolderBase]: 6679/12900 cut-off events. [2024-02-20 12:37:13,186 INFO L125 PetriNetUnfolderBase]: For 11645/11645 co-relation queries the response was YES. [2024-02-20 12:37:13,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 353573 conditions, 12900 events. 6679/12900 cut-off events. For 11645/11645 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 110257 event pairs, 0 based on Foata normal form. 5/12905 useless extension candidates. Maximal degree in co-relation 339268. Up to 9979 conditions per place. [2024-02-20 12:37:13,383 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 3876 selfloop transitions, 1847 changer transitions 1490/7214 dead transitions. [2024-02-20 12:37:13,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1493 places, 7214 transitions, 402053 flow [2024-02-20 12:37:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2024-02-20 12:37:13,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2024-02-20 12:37:13,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 664 transitions. [2024-02-20 12:37:13,385 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38204833141542005 [2024-02-20 12:37:13,386 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1469 predicate places. [2024-02-20 12:37:13,386 INFO L507 AbstractCegarLoop]: Abstraction has has 1493 places, 7214 transitions, 402053 flow [2024-02-20 12:37:13,386 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:37:13,386 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:37:13,386 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:37:13,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-02-20 12:37:13,601 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-20 12:37:13,601 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:37:13,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:37:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1325027217, now seen corresponding path program 26 times [2024-02-20 12:37:13,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:37:13,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396115117] [2024-02-20 12:37:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:37:13,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:37:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:37:13,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:37:13,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:37:13,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396115117] [2024-02-20 12:37:13,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396115117] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:37:13,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368858499] [2024-02-20 12:37:13,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:37:13,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:37:13,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:37:13,821 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:37:13,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-02-20 12:37:13,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:37:13,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:37:13,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:37:13,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:37:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:37:14,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:37:14,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:37:14,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368858499] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:37:14,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:37:14,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:37:14,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865503119] [2024-02-20 12:37:14,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:37:14,762 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:37:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:37:14,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:37:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=941, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:37:14,777 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:37:14,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1493 places, 7214 transitions, 402053 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:37:14,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:37:14,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:37:14,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:37:59,762 INFO L124 PetriNetUnfolderBase]: 6690/12938 cut-off events. [2024-02-20 12:37:59,763 INFO L125 PetriNetUnfolderBase]: For 11732/11732 co-relation queries the response was YES. [2024-02-20 12:37:59,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367533 conditions, 12938 events. 6690/12938 cut-off events. For 11732/11732 co-relation queries the response was YES. Maximal size of possible extension queue 836. Compared 110846 event pairs, 0 based on Foata normal form. 5/12943 useless extension candidates. Maximal degree in co-relation 352699. Up to 10013 conditions per place. [2024-02-20 12:37:59,977 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 3789 selfloop transitions, 1954 changer transitions 1515/7259 dead transitions. [2024-02-20 12:37:59,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1544 places, 7259 transitions, 419083 flow [2024-02-20 12:37:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-02-20 12:37:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2024-02-20 12:37:59,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 439 transitions. [2024-02-20 12:37:59,979 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3765008576329331 [2024-02-20 12:37:59,979 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1520 predicate places. [2024-02-20 12:37:59,979 INFO L507 AbstractCegarLoop]: Abstraction has has 1544 places, 7259 transitions, 419083 flow [2024-02-20 12:37:59,979 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:37:59,980 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:37:59,980 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:38:00,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-02-20 12:38:00,193 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-02-20 12:38:00,193 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:38:00,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:38:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1689366553, now seen corresponding path program 27 times [2024-02-20 12:38:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:38:00,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729595872] [2024-02-20 12:38:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:38:00,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:38:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:38:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:38:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:38:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729595872] [2024-02-20 12:38:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729595872] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:38:00,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278435015] [2024-02-20 12:38:00,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:38:00,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:38:00,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:38:00,384 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:38:00,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-02-20 12:38:00,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:38:00,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:38:00,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:38:00,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:38:00,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:38:00,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:38:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:38:01,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278435015] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:38:01,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:38:01,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:38:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442658716] [2024-02-20 12:38:01,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:38:01,117 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:38:01,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:38:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:38:01,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:38:01,133 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:38:01,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1544 places, 7259 transitions, 419083 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:38:01,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:38:01,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:38:01,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:38:47,209 INFO L124 PetriNetUnfolderBase]: 6710/12996 cut-off events. [2024-02-20 12:38:47,209 INFO L125 PetriNetUnfolderBase]: For 12019/12019 co-relation queries the response was YES. [2024-02-20 12:38:47,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382225 conditions, 12996 events. 6710/12996 cut-off events. For 12019/12019 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 111677 event pairs, 0 based on Foata normal form. 6/13002 useless extension candidates. Maximal degree in co-relation 366829. Up to 10061 conditions per place. [2024-02-20 12:38:47,425 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 3766 selfloop transitions, 1963 changer transitions 1571/7301 dead transitions. [2024-02-20 12:38:47,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1609 places, 7301 transitions, 436137 flow [2024-02-20 12:38:47,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-02-20 12:38:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2024-02-20 12:38:47,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 536 transitions. [2024-02-20 12:38:47,427 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3691460055096419 [2024-02-20 12:38:47,427 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1585 predicate places. [2024-02-20 12:38:47,427 INFO L507 AbstractCegarLoop]: Abstraction has has 1609 places, 7301 transitions, 436137 flow [2024-02-20 12:38:47,428 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:38:47,428 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:38:47,428 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:38:47,440 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-02-20 12:38:47,640 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-02-20 12:38:47,640 INFO L432 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:38:47,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:38:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash -249316061, now seen corresponding path program 28 times [2024-02-20 12:38:47,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:38:47,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435370345] [2024-02-20 12:38:47,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:38:47,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:38:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:38:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:38:47,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:38:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435370345] [2024-02-20 12:38:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435370345] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:38:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929264010] [2024-02-20 12:38:47,790 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:38:47,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:38:47,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:38:47,792 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:38:47,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-02-20 12:38:47,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:38:47,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:38:47,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:38:47,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:38:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:38:48,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:38:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:38:48,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929264010] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:38:48,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:38:48,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:38:48,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118804305] [2024-02-20 12:38:48,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:38:48,482 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:38:48,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:38:48,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:38:48,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:38:48,497 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:38:48,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1609 places, 7301 transitions, 436137 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:38:48,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:38:48,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:38:48,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:39:37,878 INFO L124 PetriNetUnfolderBase]: 7010/13758 cut-off events. [2024-02-20 12:39:37,878 INFO L125 PetriNetUnfolderBase]: For 12699/12699 co-relation queries the response was YES. [2024-02-20 12:39:37,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418751 conditions, 13758 events. 7010/13758 cut-off events. For 12699/12699 co-relation queries the response was YES. Maximal size of possible extension queue 899. Compared 121202 event pairs, 0 based on Foata normal form. 3/13761 useless extension candidates. Maximal degree in co-relation 402277. Up to 10769 conditions per place. [2024-02-20 12:39:38,194 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 3962 selfloop transitions, 2023 changer transitions 1785/7771 dead transitions. [2024-02-20 12:39:38,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1663 places, 7771 transitions, 480126 flow [2024-02-20 12:39:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-02-20 12:39:38,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2024-02-20 12:39:38,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 449 transitions. [2024-02-20 12:39:38,196 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.37107438016528926 [2024-02-20 12:39:38,196 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1639 predicate places. [2024-02-20 12:39:38,196 INFO L507 AbstractCegarLoop]: Abstraction has has 1663 places, 7771 transitions, 480126 flow [2024-02-20 12:39:38,197 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:39:38,197 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:39:38,197 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:39:38,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-02-20 12:39:38,413 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:39:38,414 INFO L432 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:39:38,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:39:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1889727617, now seen corresponding path program 29 times [2024-02-20 12:39:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:39:38,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724232176] [2024-02-20 12:39:38,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:39:38,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:39:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:39:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:39:38,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:39:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724232176] [2024-02-20 12:39:38,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724232176] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:39:38,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473784704] [2024-02-20 12:39:38,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:39:38,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:39:38,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:39:38,608 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:39:38,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-02-20 12:39:38,692 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-02-20 12:39:38,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:39:38,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2024-02-20 12:39:38,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:39:38,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:39:38,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:39:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:39:39,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473784704] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:39:39,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:39:39,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 35 [2024-02-20 12:39:39,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806836030] [2024-02-20 12:39:39,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:39:39,307 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-02-20 12:39:39,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:39:39,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-02-20 12:39:39,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2024-02-20 12:39:39,329 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:39:39,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1663 places, 7771 transitions, 480126 flow. Second operand has 36 states, 36 states have (on average 4.638888888888889) internal successors, (167), 36 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:39:39,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:39:39,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:39:39,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:40:42,993 INFO L124 PetriNetUnfolderBase]: 7819/15305 cut-off events. [2024-02-20 12:40:42,994 INFO L125 PetriNetUnfolderBase]: For 13899/13899 co-relation queries the response was YES. [2024-02-20 12:40:43,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481035 conditions, 15305 events. 7819/15305 cut-off events. For 13899/13899 co-relation queries the response was YES. Maximal size of possible extension queue 1056. Compared 136834 event pairs, 0 based on Foata normal form. 58/15363 useless extension candidates. Maximal degree in co-relation 462556. Up to 11987 conditions per place. [2024-02-20 12:40:43,287 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 4140 selfloop transitions, 2575 changer transitions 2000/8716 dead transitions. [2024-02-20 12:40:43,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1762 places, 8716 transitions, 555889 flow [2024-02-20 12:40:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-02-20 12:40:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2024-02-20 12:40:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 835 transitions. [2024-02-20 12:40:43,306 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3721033868092692 [2024-02-20 12:40:43,306 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1738 predicate places. [2024-02-20 12:40:43,307 INFO L507 AbstractCegarLoop]: Abstraction has has 1762 places, 8716 transitions, 555889 flow [2024-02-20 12:40:43,307 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.638888888888889) internal successors, (167), 36 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:40:43,307 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:40:43,307 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:40:43,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-02-20 12:40:43,508 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:40:43,508 INFO L432 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:40:43,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:40:43,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1537182835, now seen corresponding path program 30 times [2024-02-20 12:40:43,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:40:43,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942152380] [2024-02-20 12:40:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:40:43,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:40:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:40:43,707 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:40:43,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:40:43,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942152380] [2024-02-20 12:40:43,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942152380] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:40:43,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303692924] [2024-02-20 12:40:43,708 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 12:40:43,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:40:43,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:40:43,709 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:40:43,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-02-20 12:40:43,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-02-20 12:40:43,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:40:43,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:40:43,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:40:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:40:44,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:40:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:40:44,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303692924] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:40:44,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:40:44,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:40:44,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707657454] [2024-02-20 12:40:44,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:40:44,712 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:40:44,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:40:44,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:40:44,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:40:44,723 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:40:44,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1762 places, 8716 transitions, 555889 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:40:44,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:40:44,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:40:44,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:41:57,918 INFO L124 PetriNetUnfolderBase]: 7953/15605 cut-off events. [2024-02-20 12:41:57,919 INFO L125 PetriNetUnfolderBase]: For 14008/14008 co-relation queries the response was YES. [2024-02-20 12:41:57,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 506045 conditions, 15605 events. 7953/15605 cut-off events. For 14008/14008 co-relation queries the response was YES. Maximal size of possible extension queue 1070. Compared 140179 event pairs, 0 based on Foata normal form. 10/15615 useless extension candidates. Maximal degree in co-relation 486661. Up to 12239 conditions per place. [2024-02-20 12:41:58,234 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 4594 selfloop transitions, 2268 changer transitions 2050/8913 dead transitions. [2024-02-20 12:41:58,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1828 places, 8913 transitions, 586267 flow [2024-02-20 12:41:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2024-02-20 12:41:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2024-02-20 12:41:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 514 transitions. [2024-02-20 12:41:58,236 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3487109905020353 [2024-02-20 12:41:58,236 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1804 predicate places. [2024-02-20 12:41:58,237 INFO L507 AbstractCegarLoop]: Abstraction has has 1828 places, 8913 transitions, 586267 flow [2024-02-20 12:41:58,237 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:41:58,237 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:41:58,237 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:41:58,249 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-02-20 12:41:58,449 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-02-20 12:41:58,449 INFO L432 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:41:58,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:41:58,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2102725885, now seen corresponding path program 31 times [2024-02-20 12:41:58,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:41:58,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401770581] [2024-02-20 12:41:58,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:41:58,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:41:58,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:41:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:41:58,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:41:58,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401770581] [2024-02-20 12:41:58,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401770581] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:41:58,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731601358] [2024-02-20 12:41:58,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:41:58,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:41:58,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:41:58,614 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:41:58,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-02-20 12:41:58,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:41:58,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:41:58,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:41:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:41:59,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:41:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:41:59,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731601358] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:41:59,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:41:59,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:41:59,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354549231] [2024-02-20 12:41:59,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:41:59,401 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:41:59,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:41:59,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:41:59,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=948, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:41:59,412 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:41:59,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1828 places, 8913 transitions, 586267 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:41:59,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:41:59,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:41:59,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:43:18,428 INFO L124 PetriNetUnfolderBase]: 8042/15798 cut-off events. [2024-02-20 12:43:18,428 INFO L125 PetriNetUnfolderBase]: For 14177/14177 co-relation queries the response was YES. [2024-02-20 12:43:18,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528078 conditions, 15798 events. 8042/15798 cut-off events. For 14177/14177 co-relation queries the response was YES. Maximal size of possible extension queue 1082. Compared 142386 event pairs, 0 based on Foata normal form. 11/15809 useless extension candidates. Maximal degree in co-relation 508049. Up to 12392 conditions per place. [2024-02-20 12:43:18,766 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 4547 selfloop transitions, 2396 changer transitions 2088/9032 dead transitions. [2024-02-20 12:43:18,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1908 places, 9032 transitions, 612108 flow [2024-02-20 12:43:18,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-02-20 12:43:18,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2024-02-20 12:43:18,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 592 transitions. [2024-02-20 12:43:18,768 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33221099887766553 [2024-02-20 12:43:18,769 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1884 predicate places. [2024-02-20 12:43:18,769 INFO L507 AbstractCegarLoop]: Abstraction has has 1908 places, 9032 transitions, 612108 flow [2024-02-20 12:43:18,769 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:43:18,769 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:43:18,769 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:43:18,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-02-20 12:43:18,981 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:43:18,982 INFO L432 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:43:18,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:43:18,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1596379619, now seen corresponding path program 32 times [2024-02-20 12:43:18,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:43:18,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612250189] [2024-02-20 12:43:18,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:43:18,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:43:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:43:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:43:19,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:43:19,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612250189] [2024-02-20 12:43:19,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612250189] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:43:19,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756439823] [2024-02-20 12:43:19,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:43:19,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:43:19,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:43:19,313 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:43:19,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-02-20 12:43:19,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:43:19,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:43:19,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:43:19,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:43:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:43:19,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:43:19,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:43:19,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756439823] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:43:19,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:43:19,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:43:19,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209089543] [2024-02-20 12:43:19,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:43:19,981 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:43:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:43:19,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:43:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=942, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:43:19,997 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:43:19,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1908 places, 9032 transitions, 612108 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:43:19,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:43:19,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:43:19,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:44:34,539 INFO L124 PetriNetUnfolderBase]: 8055/15847 cut-off events. [2024-02-20 12:44:34,540 INFO L125 PetriNetUnfolderBase]: For 14196/14196 co-relation queries the response was YES. [2024-02-20 12:44:34,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545522 conditions, 15847 events. 8055/15847 cut-off events. For 14196/14196 co-relation queries the response was YES. Maximal size of possible extension queue 1093. Compared 143225 event pairs, 0 based on Foata normal form. 5/15852 useless extension candidates. Maximal degree in co-relation 524808. Up to 12434 conditions per place. [2024-02-20 12:44:34,829 INFO L140 encePairwiseOnDemand]: 11/22 looper letters, 4708 selfloop transitions, 2251 changer transitions 2113/9073 dead transitions. [2024-02-20 12:44:34,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1952 places, 9073 transitions, 633040 flow [2024-02-20 12:44:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-02-20 12:44:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-02-20 12:44:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 349 transitions. [2024-02-20 12:44:34,837 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3525252525252525 [2024-02-20 12:44:34,837 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 1928 predicate places. [2024-02-20 12:44:34,837 INFO L507 AbstractCegarLoop]: Abstraction has has 1952 places, 9073 transitions, 633040 flow [2024-02-20 12:44:34,837 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:44:34,837 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:44:34,838 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:44:34,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-02-20 12:44:35,048 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:35,049 INFO L432 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:44:35,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:44:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash -26648741, now seen corresponding path program 33 times [2024-02-20 12:44:35,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:44:35,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585730438] [2024-02-20 12:44:35,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:44:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:44:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:44:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:35,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:44:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585730438] [2024-02-20 12:44:35,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585730438] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:44:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382973141] [2024-02-20 12:44:35,214 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 12:44:35,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:44:35,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:44:35,215 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:44:35,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-02-20 12:44:35,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 12:44:35,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:44:35,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:44:35,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:44:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:35,542 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:44:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:44:35,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382973141] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:44:35,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:44:35,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:44:35,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727221381] [2024-02-20 12:44:35,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:44:35,885 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:44:35,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:44:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:44:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:44:35,902 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:44:35,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1952 places, 9073 transitions, 633040 flow. Second operand has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:44:35,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:44:35,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:44:35,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:45:57,038 INFO L124 PetriNetUnfolderBase]: 8543/16854 cut-off events. [2024-02-20 12:45:57,039 INFO L125 PetriNetUnfolderBase]: For 14951/14951 co-relation queries the response was YES. [2024-02-20 12:45:57,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 596694 conditions, 16854 events. 8543/16854 cut-off events. For 14951/14951 co-relation queries the response was YES. Maximal size of possible extension queue 1167. Compared 154605 event pairs, 0 based on Foata normal form. 13/16867 useless extension candidates. Maximal degree in co-relation 573809. Up to 13219 conditions per place. [2024-02-20 12:45:57,361 INFO L140 encePairwiseOnDemand]: 10/22 looper letters, 4836 selfloop transitions, 2588 changer transitions 2245/9670 dead transitions. [2024-02-20 12:45:57,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 2038 places, 9670 transitions, 693958 flow [2024-02-20 12:45:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2024-02-20 12:45:57,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2024-02-20 12:45:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 714 transitions. [2024-02-20 12:45:57,363 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3730407523510972 [2024-02-20 12:45:57,365 INFO L308 CegarLoopForPetriNet]: 24 programPoint places, 2014 predicate places. [2024-02-20 12:45:57,365 INFO L507 AbstractCegarLoop]: Abstraction has has 2038 places, 9670 transitions, 693958 flow [2024-02-20 12:45:57,365 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 4.794117647058823) internal successors, (163), 34 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:45:57,366 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:45:57,366 INFO L234 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 12:45:57,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2024-02-20 12:45:57,566 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-02-20 12:45:57,567 INFO L432 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-02-20 12:45:57,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:45:57,567 INFO L85 PathProgramCache]: Analyzing trace with hash -221025531, now seen corresponding path program 34 times [2024-02-20 12:45:57,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:45:57,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2778294] [2024-02-20 12:45:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:45:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:45:57,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:45:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:45:57,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:45:57,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2778294] [2024-02-20 12:45:57,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2778294] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:45:57,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443159106] [2024-02-20 12:45:57,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:45:57,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:45:57,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:45:57,718 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-20 12:45:57,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-02-20 12:45:57,798 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:45:57,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:45:57,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2024-02-20 12:45:57,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:45:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:45:58,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:45:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:45:58,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443159106] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:45:58,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:45:58,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 33 [2024-02-20 12:45:58,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60498612] [2024-02-20 12:45:58,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:45:58,386 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 12:45:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:45:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 12:45:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 12:45:58,391 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 22 [2024-02-20 12:45:58,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 2038 places, 9670 transitions, 693958 flow. Second operand has 34 states, 34 states have (on average 4.735294117647059) internal successors, (161), 34 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 12:45:58,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:45:58,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 22 [2024-02-20 12:45:58,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15