./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.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/chl-chromosome-subst.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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --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 11:44:30,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:44:30,610 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:44:30,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:44:30,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:44:30,637 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:44:30,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:44:30,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:44:30,639 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:44:30,642 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:44:30,642 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:44:30,642 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:44:30,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:44:30,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:44:30,645 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:44:30,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:44:30,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:44:30,645 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:44:30,646 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:44:30,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:44:30,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:44:30,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:44:30,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:44:30,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:44:30,647 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:44:30,647 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:44:30,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:44:30,648 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:44:30,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:44:30,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:44:30,649 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:44:30,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:44:30,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:44:30,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:44:30,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:44:30,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:44:30,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:44:30,651 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:44:30,651 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:44:30,651 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:44:30,651 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:44:30,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:44:30,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:44:30,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:44:30,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:44:30,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:44:30,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:44:30,894 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:44:30,894 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:44:30,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2024-02-20 11:44:31,894 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:44:32,039 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:44:32,039 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-subst.wvr.c [2024-02-20 11:44:32,045 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526cb2611/60b22cb612ff4a30b3a2c64b2f568367/FLAG5ba7e3e4c [2024-02-20 11:44:32,056 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526cb2611/60b22cb612ff4a30b3a2c64b2f568367 [2024-02-20 11:44:32,058 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:44:32,059 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:44:32,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:44:32,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:44:32,064 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:44:32,065 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,066 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a69bce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32, skipping insertion in model container [2024-02-20 11:44:32,066 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:44:32,218 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/chl-chromosome-subst.wvr.c[3097,3110] [2024-02-20 11:44:32,225 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:44:32,231 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:44:32,262 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/chl-chromosome-subst.wvr.c[3097,3110] [2024-02-20 11:44:32,265 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:44:32,286 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:44:32,286 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32 WrapperNode [2024-02-20 11:44:32,286 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:44:32,287 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:44:32,287 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:44:32,287 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:44:32,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,321 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 283 [2024-02-20 11:44:32,321 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:44:32,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:44:32,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:44:32,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:44:32,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,346 INFO L175 MemorySlicer]: Split 17 memory accesses to 5 slices as follows [2, 2, 9, 2, 2]. 53 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 3, 1, 1]. [2024-02-20 11:44:32,347 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,347 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,356 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,360 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:44:32,364 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:44:32,364 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:44:32,364 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:44:32,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (1/1) ... [2024-02-20 11:44:32,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:44:32,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:32,407 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 11:44:32,420 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 11:44:32,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:44:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:44:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:44:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:44:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:44:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:44:32,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-20 11:44:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:44:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:44:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:44:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:44:32,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-20 11:44:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 11:44:32,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 11:44:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 11:44:32,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 11:44:32,452 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 11:44:32,452 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 11:44:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:44:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:44:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:44:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:44:32,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-20 11:44:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-20 11:44:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:44:32,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:44:32,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:44:32,457 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 11:44:32,551 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:44:32,552 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:44:32,879 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:44:32,880 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:44:33,183 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:44:33,184 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-20 11:44:33,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:44:33 BoogieIcfgContainer [2024-02-20 11:44:33,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:44:33,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:44:33,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:44:33,188 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:44:33,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:44:32" (1/3) ... [2024-02-20 11:44:33,189 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46447136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:44:33, skipping insertion in model container [2024-02-20 11:44:33,189 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:44:32" (2/3) ... [2024-02-20 11:44:33,191 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46447136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:44:33, skipping insertion in model container [2024-02-20 11:44:33,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:44:33" (3/3) ... [2024-02-20 11:44:33,192 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2024-02-20 11:44:33,207 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:44:33,207 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:44:33,207 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:44:33,253 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 11:44:33,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 33 transitions, 87 flow [2024-02-20 11:44:33,320 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-02-20 11:44:33,320 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 11:44:33,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 6/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-02-20 11:44:33,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 33 transitions, 87 flow [2024-02-20 11:44:33,326 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 29 transitions, 76 flow [2024-02-20 11:44:33,337 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:44:33,344 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;@11227b0d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:44:33,344 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 11:44:33,358 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:44:33,358 INFO L124 PetriNetUnfolderBase]: 6/28 cut-off events. [2024-02-20 11:44:33,358 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 11:44:33,359 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:33,359 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:33,360 INFO L432 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:33,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:33,364 INFO L85 PathProgramCache]: Analyzing trace with hash 792045727, now seen corresponding path program 1 times [2024-02-20 11:44:33,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:33,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531210591] [2024-02-20 11:44:33,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:33,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:33,751 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 11:44:33,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531210591] [2024-02-20 11:44:33,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531210591] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:33,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:44:33,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-20 11:44:33,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439589508] [2024-02-20 11:44:33,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:33,760 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:44:33,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:33,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:44:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:44:33,785 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:33,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 11:44:33,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:33,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:33,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:33,930 INFO L124 PetriNetUnfolderBase]: 223/335 cut-off events. [2024-02-20 11:44:33,930 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-02-20 11:44:33,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 335 events. 223/335 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 773 event pairs, 138 based on Foata normal form. 0/250 useless extension candidates. Maximal degree in co-relation 534. Up to 332 conditions per place. [2024-02-20 11:44:33,935 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 25 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-02-20 11:44:33,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 144 flow [2024-02-20 11:44:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 11:44:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 11:44:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-02-20 11:44:33,945 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-02-20 11:44:33,948 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2024-02-20 11:44:33,948 INFO L507 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 144 flow [2024-02-20 11:44:33,948 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 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 11:44:33,948 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:33,949 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:33,949 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:44:33,949 INFO L432 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:33,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:33,950 INFO L85 PathProgramCache]: Analyzing trace with hash 176250298, now seen corresponding path program 1 times [2024-02-20 11:44:33,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:33,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691194660] [2024-02-20 11:44:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:33,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:33,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:34,147 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:44:34,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:34,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691194660] [2024-02-20 11:44:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691194660] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:34,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:44:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-20 11:44:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275483347] [2024-02-20 11:44:34,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:34,150 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-20 11:44:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-20 11:44:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-20 11:44:34,152 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:34,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 11:44:34,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:34,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:34,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:34,305 INFO L124 PetriNetUnfolderBase]: 383/572 cut-off events. [2024-02-20 11:44:34,305 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-02-20 11:44:34,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 572 events. 383/572 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1718 event pairs, 138 based on Foata normal form. 1/420 useless extension candidates. Maximal degree in co-relation 1315. Up to 569 conditions per place. [2024-02-20 11:44:34,308 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 41 selfloop transitions, 2 changer transitions 6/50 dead transitions. [2024-02-20 11:44:34,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 329 flow [2024-02-20 11:44:34,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 11:44:34,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 11:44:34,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-02-20 11:44:34,310 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5959595959595959 [2024-02-20 11:44:34,311 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 4 predicate places. [2024-02-20 11:44:34,311 INFO L507 AbstractCegarLoop]: Abstraction has has 37 places, 50 transitions, 329 flow [2024-02-20 11:44:34,311 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 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 11:44:34,311 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:34,311 INFO L234 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:34,312 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:44:34,312 INFO L432 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:34,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:34,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2126942885, now seen corresponding path program 1 times [2024-02-20 11:44:34,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:34,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786008650] [2024-02-20 11:44:34,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:34,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:34,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:44:34,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786008650] [2024-02-20 11:44:34,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786008650] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703693130] [2024-02-20 11:44:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:34,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:34,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:34,451 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 11:44:34,460 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 11:44:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:34,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2024-02-20 11:44:34,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:34,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:44:34,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:44:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-20 11:44:34,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703693130] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:44:34,644 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:44:34,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2024-02-20 11:44:34,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189553293] [2024-02-20 11:44:34,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:44:34,646 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-20 11:44:34,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:34,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-20 11:44:34,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-02-20 11:44:34,648 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:34,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 50 transitions, 329 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 11:44:34,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:34,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:34,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:34,808 INFO L124 PetriNetUnfolderBase]: 383/581 cut-off events. [2024-02-20 11:44:34,809 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2024-02-20 11:44:34,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 581 events. 383/581 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1720 event pairs, 138 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 1740. Up to 578 conditions per place. [2024-02-20 11:44:34,814 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 37 selfloop transitions, 15 changer transitions 6/59 dead transitions. [2024-02-20 11:44:34,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 499 flow [2024-02-20 11:44:34,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:44:34,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:44:34,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2024-02-20 11:44:34,816 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-02-20 11:44:34,817 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-02-20 11:44:34,817 INFO L507 AbstractCegarLoop]: Abstraction has has 42 places, 59 transitions, 499 flow [2024-02-20 11:44:34,817 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 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 11:44:34,817 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:34,818 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:34,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 11:44:35,032 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 11:44:35,033 INFO L432 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:35,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1555990258, now seen corresponding path program 2 times [2024-02-20 11:44:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:35,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526196340] [2024-02-20 11:44:35,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:35,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:35,223 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-20 11:44:35,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:35,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526196340] [2024-02-20 11:44:35,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526196340] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:35,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802408871] [2024-02-20 11:44:35,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:44:35,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:35,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:35,225 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 11:44:35,252 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 11:44:35,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-20 11:44:35,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:35,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-20 11:44:35,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-02-20 11:44:35,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:44:35,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802408871] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:35,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:44:35,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-02-20 11:44:35,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799298845] [2024-02-20 11:44:35,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:35,405 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:44:35,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:35,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:44:35,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:44:35,406 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:35,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 59 transitions, 499 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:44:35,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:35,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:35,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:35,625 INFO L124 PetriNetUnfolderBase]: 773/1157 cut-off events. [2024-02-20 11:44:35,625 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-02-20 11:44:35,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5907 conditions, 1157 events. 773/1157 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4322 event pairs, 138 based on Foata normal form. 1/813 useless extension candidates. Maximal degree in co-relation 4235. Up to 1153 conditions per place. [2024-02-20 11:44:35,632 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 86 selfloop transitions, 10 changer transitions 19/116 dead transitions. [2024-02-20 11:44:35,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 116 transitions, 1227 flow [2024-02-20 11:44:35,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 11:44:35,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 11:44:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-02-20 11:44:35,634 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-02-20 11:44:35,636 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2024-02-20 11:44:35,636 INFO L507 AbstractCegarLoop]: Abstraction has has 45 places, 116 transitions, 1227 flow [2024-02-20 11:44:35,636 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:44:35,637 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:35,637 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:35,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 11:44:35,852 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 11:44:35,852 INFO L432 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:35,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:35,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1405600422, now seen corresponding path program 3 times [2024-02-20 11:44:35,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:35,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702977457] [2024-02-20 11:44:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-20 11:44:35,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702977457] [2024-02-20 11:44:35,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702977457] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:35,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720611404] [2024-02-20 11:44:35,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:44:35,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:35,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:36,013 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 11:44:36,029 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 11:44:36,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-20 11:44:36,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:36,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 9 conjunts are in the unsatisfiable core [2024-02-20 11:44:36,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-02-20 11:44:36,189 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:44:36,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720611404] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:36,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:44:36,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-02-20 11:44:36,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978281698] [2024-02-20 11:44:36,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:36,190 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:44:36,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:36,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:44:36,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:44:36,191 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:36,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 116 transitions, 1227 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:44:36,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:36,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:36,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:36,431 INFO L124 PetriNetUnfolderBase]: 1119/1665 cut-off events. [2024-02-20 11:44:36,432 INFO L125 PetriNetUnfolderBase]: For 225/225 co-relation queries the response was YES. [2024-02-20 11:44:36,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10138 conditions, 1665 events. 1119/1665 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6793 event pairs, 138 based on Foata normal form. 1/1147 useless extension candidates. Maximal degree in co-relation 7170. Up to 1660 conditions per place. [2024-02-20 11:44:36,442 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 122 selfloop transitions, 14 changer transitions 32/169 dead transitions. [2024-02-20 11:44:36,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 169 transitions, 2129 flow [2024-02-20 11:44:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-20 11:44:36,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-20 11:44:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-02-20 11:44:36,443 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.553030303030303 [2024-02-20 11:44:36,444 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2024-02-20 11:44:36,444 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 169 transitions, 2129 flow [2024-02-20 11:44:36,444 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:44:36,444 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:36,444 INFO L234 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:36,458 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 11:44:36,656 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 11:44:36,656 INFO L432 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:36,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:36,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1035685418, now seen corresponding path program 1 times [2024-02-20 11:44:36,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:36,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427076556] [2024-02-20 11:44:36,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:36,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-02-20 11:44:36,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427076556] [2024-02-20 11:44:36,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427076556] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:36,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773384411] [2024-02-20 11:44:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:36,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:36,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:36,804 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 11:44:36,805 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 11:44:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:36,933 INFO L262 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:44:36,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:36,987 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-02-20 11:44:36,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:44:37,036 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-02-20 11:44:37,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773384411] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:44:37,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:44:37,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2024-02-20 11:44:37,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375484334] [2024-02-20 11:44:37,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:44:37,037 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:44:37,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:37,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:44:37,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:44:37,038 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:37,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 169 transitions, 2129 flow. Second operand has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 11:44:37,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:37,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:37,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:37,260 INFO L124 PetriNetUnfolderBase]: 1119/1668 cut-off events. [2024-02-20 11:44:37,260 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-02-20 11:44:37,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11822 conditions, 1668 events. 1119/1668 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6790 event pairs, 138 based on Foata normal form. 0/1149 useless extension candidates. Maximal degree in co-relation 8355. Up to 1663 conditions per place. [2024-02-20 11:44:37,272 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 121 selfloop transitions, 18 changer transitions 32/172 dead transitions. [2024-02-20 11:44:37,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 172 transitions, 2507 flow [2024-02-20 11:44:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:44:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:44:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-02-20 11:44:37,274 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3203463203463203 [2024-02-20 11:44:37,276 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 21 predicate places. [2024-02-20 11:44:37,276 INFO L507 AbstractCegarLoop]: Abstraction has has 54 places, 172 transitions, 2507 flow [2024-02-20 11:44:37,277 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.705882352941177) internal successors, (114), 17 states have internal predecessors, (114), 0 states have call successors, (0), 0 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 11:44:37,277 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:37,277 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:37,302 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 11:44:37,492 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 11:44:37,492 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:37,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:37,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1230888111, now seen corresponding path program 2 times [2024-02-20 11:44:37,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:37,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185221495] [2024-02-20 11:44:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:37,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:37,724 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-20 11:44:37,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185221495] [2024-02-20 11:44:37,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185221495] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:37,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369438328] [2024-02-20 11:44:37,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:44:37,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:37,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:37,725 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 11:44:37,749 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 11:44:37,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:44:37,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:37,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:44:37,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-20 11:44:37,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:44:37,974 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-20 11:44:37,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369438328] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:37,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:44:37,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-02-20 11:44:37,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418130135] [2024-02-20 11:44:37,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:37,975 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:37,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:37,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:37,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:44:37,976 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:37,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 172 transitions, 2507 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:37,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:37,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:37,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:38,273 INFO L124 PetriNetUnfolderBase]: 1189/1770 cut-off events. [2024-02-20 11:44:38,274 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-02-20 11:44:38,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14310 conditions, 1770 events. 1189/1770 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7306 event pairs, 28 based on Foata normal form. 0/1229 useless extension candidates. Maximal degree in co-relation 10100. Up to 1765 conditions per place. [2024-02-20 11:44:38,289 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 169 selfloop transitions, 16 changer transitions 43/229 dead transitions. [2024-02-20 11:44:38,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 229 transitions, 3791 flow [2024-02-20 11:44:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:38,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-02-20 11:44:38,291 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-20 11:44:38,292 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 25 predicate places. [2024-02-20 11:44:38,292 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 229 transitions, 3791 flow [2024-02-20 11:44:38,292 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:38,292 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:38,293 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:38,304 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 11:44:38,504 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 11:44:38,505 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:38,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:38,505 INFO L85 PathProgramCache]: Analyzing trace with hash -676740959, now seen corresponding path program 1 times [2024-02-20 11:44:38,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:38,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026505829] [2024-02-20 11:44:38,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:38,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:38,706 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:38,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:38,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026505829] [2024-02-20 11:44:38,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026505829] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:38,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769584455] [2024-02-20 11:44:38,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:38,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:38,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:38,709 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 11:44:38,728 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 11:44:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:38,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-20 11:44:38,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:38,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:44:39,009 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769584455] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:44:39,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:44:39,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-02-20 11:44:39,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712918164] [2024-02-20 11:44:39,010 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:44:39,010 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-20 11:44:39,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-20 11:44:39,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-02-20 11:44:39,011 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:39,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 229 transitions, 3791 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 11:44:39,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:39,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:39,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:39,682 INFO L124 PetriNetUnfolderBase]: 2701/4005 cut-off events. [2024-02-20 11:44:39,682 INFO L125 PetriNetUnfolderBase]: For 620/620 co-relation queries the response was YES. [2024-02-20 11:44:39,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36412 conditions, 4005 events. 2701/4005 cut-off events. For 620/620 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19289 event pairs, 28 based on Foata normal form. 9/2747 useless extension candidates. Maximal degree in co-relation 26917. Up to 4000 conditions per place. [2024-02-20 11:44:39,714 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 313 selfloop transitions, 40 changer transitions 310/664 dead transitions. [2024-02-20 11:44:39,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 664 transitions, 12320 flow [2024-02-20 11:44:39,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-20 11:44:39,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-20 11:44:39,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-02-20 11:44:39,716 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5791245791245792 [2024-02-20 11:44:39,718 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2024-02-20 11:44:39,718 INFO L507 AbstractCegarLoop]: Abstraction has has 66 places, 664 transitions, 12320 flow [2024-02-20 11:44:39,718 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 11:44:39,718 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:39,718 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:39,734 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 11:44:39,932 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 11:44:39,932 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:39,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash -792538028, now seen corresponding path program 2 times [2024-02-20 11:44:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:39,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547352578] [2024-02-20 11:44:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:39,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-02-20 11:44:40,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547352578] [2024-02-20 11:44:40,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547352578] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:40,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412082219] [2024-02-20 11:44:40,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:44:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:40,308 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 11:44:40,328 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 11:44:40,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:44:40,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:40,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:44:40,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:44:40,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:44:40,530 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:44:40,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412082219] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:40,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:44:40,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 13 [2024-02-20 11:44:40,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596637232] [2024-02-20 11:44:40,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:40,531 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:40,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:40,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:40,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-02-20 11:44:40,532 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:40,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 664 transitions, 12320 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:40,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:40,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:40,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:41,293 INFO L124 PetriNetUnfolderBase]: 2851/4219 cut-off events. [2024-02-20 11:44:41,293 INFO L125 PetriNetUnfolderBase]: For 707/707 co-relation queries the response was YES. [2024-02-20 11:44:41,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42565 conditions, 4219 events. 2851/4219 cut-off events. For 707/707 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 20170 event pairs, 10 based on Foata normal form. 0/2900 useless extension candidates. Maximal degree in co-relation 31632. Up to 4214 conditions per place. [2024-02-20 11:44:41,326 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 401 selfloop transitions, 52 changer transitions 410/864 dead transitions. [2024-02-20 11:44:41,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 864 transitions, 17736 flow [2024-02-20 11:44:41,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:41,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:41,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-02-20 11:44:41,327 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-02-20 11:44:41,327 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 37 predicate places. [2024-02-20 11:44:41,328 INFO L507 AbstractCegarLoop]: Abstraction has has 70 places, 864 transitions, 17736 flow [2024-02-20 11:44:41,328 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:41,328 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:41,328 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:41,342 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 11:44:41,540 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 11:44:41,540 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:41,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:41,541 INFO L85 PathProgramCache]: Analyzing trace with hash 150097700, now seen corresponding path program 3 times [2024-02-20 11:44:41,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:41,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121462754] [2024-02-20 11:44:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:41,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:41,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:41,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121462754] [2024-02-20 11:44:41,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121462754] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:41,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33067153] [2024-02-20 11:44:41,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:44:41,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:41,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:41,821 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 11:44:41,822 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 11:44:41,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:44:41,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:41,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:44:41,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:42,002 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-02-20 11:44:42,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:44:42,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33067153] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:42,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:44:42,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-02-20 11:44:42,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379284735] [2024-02-20 11:44:42,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:42,004 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:42,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:42,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:42,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:44:42,004 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:42,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 864 transitions, 17736 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:42,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:42,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:42,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:42,904 INFO L124 PetriNetUnfolderBase]: 2915/4372 cut-off events. [2024-02-20 11:44:42,904 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-02-20 11:44:42,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48490 conditions, 4372 events. 2915/4372 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21665 event pairs, 10 based on Foata normal form. 0/3033 useless extension candidates. Maximal degree in co-relation 35837. Up to 4367 conditions per place. [2024-02-20 11:44:42,926 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 453 selfloop transitions, 55 changer transitions 595/1104 dead transitions. [2024-02-20 11:44:42,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 1104 transitions, 24871 flow [2024-02-20 11:44:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:42,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-02-20 11:44:42,928 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2024-02-20 11:44:42,928 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2024-02-20 11:44:42,928 INFO L507 AbstractCegarLoop]: Abstraction has has 74 places, 1104 transitions, 24871 flow [2024-02-20 11:44:42,929 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:42,929 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:42,929 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:42,946 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 11:44:43,141 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 11:44:43,142 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:43,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:43,142 INFO L85 PathProgramCache]: Analyzing trace with hash -417410026, now seen corresponding path program 3 times [2024-02-20 11:44:43,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:43,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767387759] [2024-02-20 11:44:43,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:43,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:43,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767387759] [2024-02-20 11:44:43,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767387759] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:43,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692100234] [2024-02-20 11:44:43,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:44:43,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:43,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:43,429 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 11:44:43,433 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 11:44:43,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:44:43,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:43,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:44:43,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:43,610 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-02-20 11:44:43,611 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:44:43,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692100234] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:43,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:44:43,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-02-20 11:44:43,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264914429] [2024-02-20 11:44:43,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:43,612 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:43,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:43,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:43,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:44:43,613 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:43,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 1104 transitions, 24871 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:43,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:43,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:43,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:44,584 INFO L124 PetriNetUnfolderBase]: 2883/4340 cut-off events. [2024-02-20 11:44:44,585 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2024-02-20 11:44:44,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52476 conditions, 4340 events. 2883/4340 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 21603 event pairs, 52 based on Foata normal form. 0/3033 useless extension candidates. Maximal degree in co-relation 38762. Up to 4335 conditions per place. [2024-02-20 11:44:44,613 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 448 selfloop transitions, 55 changer transitions 715/1219 dead transitions. [2024-02-20 11:44:44,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 1219 transitions, 29912 flow [2024-02-20 11:44:44,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:44,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:44,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2024-02-20 11:44:44,615 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-02-20 11:44:44,615 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 45 predicate places. [2024-02-20 11:44:44,615 INFO L507 AbstractCegarLoop]: Abstraction has has 78 places, 1219 transitions, 29912 flow [2024-02-20 11:44:44,615 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:44,615 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:44,615 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:44,642 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 11:44:44,826 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 11:44:44,827 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:44,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash -307055944, now seen corresponding path program 4 times [2024-02-20 11:44:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:44,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044428030] [2024-02-20 11:44:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:44,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:45,110 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:45,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044428030] [2024-02-20 11:44:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044428030] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:45,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671364803] [2024-02-20 11:44:45,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:44:45,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:45,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:45,112 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 11:44:45,149 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 11:44:45,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:44:45,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:45,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:44:45,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-02-20 11:44:45,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:44:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-02-20 11:44:45,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671364803] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:45,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:44:45,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 5] total 14 [2024-02-20 11:44:45,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928591215] [2024-02-20 11:44:45,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:45,370 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:45,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:45,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:45,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:44:45,371 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:45,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 1219 transitions, 29912 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:45,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:45,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:45,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:46,484 INFO L124 PetriNetUnfolderBase]: 3139/4751 cut-off events. [2024-02-20 11:44:46,485 INFO L125 PetriNetUnfolderBase]: For 842/842 co-relation queries the response was YES. [2024-02-20 11:44:46,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62180 conditions, 4751 events. 3139/4751 cut-off events. For 842/842 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 24368 event pairs, 52 based on Foata normal form. 0/3330 useless extension candidates. Maximal degree in co-relation 45837. Up to 4745 conditions per place. [2024-02-20 11:44:46,514 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 500 selfloop transitions, 60 changer transitions 772/1333 dead transitions. [2024-02-20 11:44:46,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 1333 transitions, 35372 flow [2024-02-20 11:44:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-02-20 11:44:46,515 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5575757575757576 [2024-02-20 11:44:46,516 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 49 predicate places. [2024-02-20 11:44:46,516 INFO L507 AbstractCegarLoop]: Abstraction has has 82 places, 1333 transitions, 35372 flow [2024-02-20 11:44:46,516 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:46,516 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:46,516 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:46,530 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 11:44:46,730 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 11:44:46,730 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:46,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:46,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1311637308, now seen corresponding path program 4 times [2024-02-20 11:44:46,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:46,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55056729] [2024-02-20 11:44:46,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:46,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:46,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:46,974 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:46,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:46,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55056729] [2024-02-20 11:44:46,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55056729] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:46,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344392335] [2024-02-20 11:44:46,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:44:46,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:46,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:46,976 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 11:44:47,004 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 11:44:47,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:44:47,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:47,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:44:47,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:47,187 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-02-20 11:44:47,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:44:47,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344392335] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:47,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:44:47,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-02-20 11:44:47,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350750518] [2024-02-20 11:44:47,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:47,188 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:47,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:47,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:47,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:44:47,189 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:47,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 1333 transitions, 35372 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:47,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:47,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:47,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:48,484 INFO L124 PetriNetUnfolderBase]: 3299/4985 cut-off events. [2024-02-20 11:44:48,485 INFO L125 PetriNetUnfolderBase]: For 871/871 co-relation queries the response was YES. [2024-02-20 11:44:48,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70219 conditions, 4985 events. 3299/4985 cut-off events. For 871/871 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 25694 event pairs, 10 based on Foata normal form. 0/3512 useless extension candidates. Maximal degree in co-relation 51910. Up to 4979 conditions per place. [2024-02-20 11:44:48,514 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 526 selfloop transitions, 65 changer transitions 804/1396 dead transitions. [2024-02-20 11:44:48,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 1396 transitions, 39830 flow [2024-02-20 11:44:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-02-20 11:44:48,515 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-02-20 11:44:48,515 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 53 predicate places. [2024-02-20 11:44:48,516 INFO L507 AbstractCegarLoop]: Abstraction has has 86 places, 1396 transitions, 39830 flow [2024-02-20 11:44:48,516 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:48,516 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:48,516 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:48,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-02-20 11:44:48,727 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 11:44:48,727 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:48,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:48,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1758332954, now seen corresponding path program 5 times [2024-02-20 11:44:48,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:48,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37645691] [2024-02-20 11:44:48,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:48,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:48,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:48,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37645691] [2024-02-20 11:44:48,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37645691] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:48,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436701168] [2024-02-20 11:44:48,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:44:48,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:48,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:48,964 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 11:44:48,985 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 11:44:49,213 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-20 11:44:49,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:49,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:44:49,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:49,250 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-02-20 11:44:49,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-20 11:44:49,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436701168] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:49,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-20 11:44:49,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2024-02-20 11:44:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878256536] [2024-02-20 11:44:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:49,250 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:49,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:49,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:49,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:44:49,251 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:49,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 1396 transitions, 39830 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:49,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:49,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:49,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:50,471 INFO L124 PetriNetUnfolderBase]: 3151/4746 cut-off events. [2024-02-20 11:44:50,472 INFO L125 PetriNetUnfolderBase]: For 804/804 co-relation queries the response was YES. [2024-02-20 11:44:50,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71605 conditions, 4746 events. 3151/4746 cut-off events. For 804/804 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 24134 event pairs, 10 based on Foata normal form. 0/3377 useless extension candidates. Maximal degree in co-relation 53241. Up to 4741 conditions per place. [2024-02-20 11:44:50,510 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 482 selfloop transitions, 55 changer transitions 789/1327 dead transitions. [2024-02-20 11:44:50,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 1327 transitions, 40505 flow [2024-02-20 11:44:50,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:50,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:50,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-02-20 11:44:50,512 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-02-20 11:44:50,512 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 57 predicate places. [2024-02-20 11:44:50,512 INFO L507 AbstractCegarLoop]: Abstraction has has 90 places, 1327 transitions, 40505 flow [2024-02-20 11:44:50,512 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:50,512 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:50,512 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:50,530 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 11:44:50,725 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 11:44:50,725 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:50,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:50,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1195711752, now seen corresponding path program 5 times [2024-02-20 11:44:50,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:50,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235573590] [2024-02-20 11:44:50,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:50,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:50,966 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:50,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:50,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235573590] [2024-02-20 11:44:50,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235573590] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:50,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327556564] [2024-02-20 11:44:50,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:44:50,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:50,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:50,967 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 11:44:50,992 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 11:44:51,643 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-20 11:44:51,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:44:51,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:44:51,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:51,739 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:51,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:44:51,832 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:44:51,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327556564] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:44:51,832 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:44:51,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-02-20 11:44:51,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048167052] [2024-02-20 11:44:51,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:44:51,833 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:44:51,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:44:51,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:44:51,834 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:51,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 1327 transitions, 40505 flow. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 11:44:51,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:51,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:51,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:53,466 INFO L124 PetriNetUnfolderBase]: 3739/5630 cut-off events. [2024-02-20 11:44:53,466 INFO L125 PetriNetUnfolderBase]: For 966/966 co-relation queries the response was YES. [2024-02-20 11:44:53,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90578 conditions, 5630 events. 3739/5630 cut-off events. For 966/966 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 29265 event pairs, 10 based on Foata normal form. 3/4002 useless extension candidates. Maximal degree in co-relation 69793. Up to 5625 conditions per place. [2024-02-20 11:44:53,507 INFO L140 encePairwiseOnDemand]: 29/33 looper letters, 527 selfloop transitions, 96 changer transitions 993/1617 dead transitions. [2024-02-20 11:44:53,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 1617 transitions, 52587 flow [2024-02-20 11:44:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-20 11:44:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-20 11:44:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 207 transitions. [2024-02-20 11:44:53,508 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5702479338842975 [2024-02-20 11:44:53,508 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 67 predicate places. [2024-02-20 11:44:53,508 INFO L507 AbstractCegarLoop]: Abstraction has has 100 places, 1617 transitions, 52587 flow [2024-02-20 11:44:53,509 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 12 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 11:44:53,509 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:53,509 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:53,521 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 11:44:53,709 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 11:44:53,709 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:53,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:53,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1705362329, now seen corresponding path program 6 times [2024-02-20 11:44:53,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:53,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731375863] [2024-02-20 11:44:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:53,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:53,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:44:53,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:53,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731375863] [2024-02-20 11:44:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731375863] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:53,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:44:53,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:44:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002315319] [2024-02-20 11:44:53,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:53,960 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:53,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:53,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:53,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:44:53,960 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:53,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 1617 transitions, 52587 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:53,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:53,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:53,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:55,913 INFO L124 PetriNetUnfolderBase]: 3803/5788 cut-off events. [2024-02-20 11:44:55,913 INFO L125 PetriNetUnfolderBase]: For 1029/1029 co-relation queries the response was YES. [2024-02-20 11:44:55,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98916 conditions, 5788 events. 3803/5788 cut-off events. For 1029/1029 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 30934 event pairs, 10 based on Foata normal form. 0/4133 useless extension candidates. Maximal degree in co-relation 76152. Up to 5783 conditions per place. [2024-02-20 11:44:55,954 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 597 selfloop transitions, 72 changer transitions 1259/1929 dead transitions. [2024-02-20 11:44:55,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 1929 transitions, 66607 flow [2024-02-20 11:44:55,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:55,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:55,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2024-02-20 11:44:55,955 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5151515151515151 [2024-02-20 11:44:55,955 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2024-02-20 11:44:55,955 INFO L507 AbstractCegarLoop]: Abstraction has has 104 places, 1929 transitions, 66607 flow [2024-02-20 11:44:55,955 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:55,955 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:55,956 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:55,956 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-02-20 11:44:55,956 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:55,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:55,956 INFO L85 PathProgramCache]: Analyzing trace with hash 2062864897, now seen corresponding path program 6 times [2024-02-20 11:44:55,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:55,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346426061] [2024-02-20 11:44:55,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:55,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:44:56,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:56,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346426061] [2024-02-20 11:44:56,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346426061] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:44:56,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:44:56,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:44:56,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434840242] [2024-02-20 11:44:56,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:56,151 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:56,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:56,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:56,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:44:56,152 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:56,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 1929 transitions, 66607 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:56,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:56,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:56,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:44:58,243 INFO L124 PetriNetUnfolderBase]: 3753/5738 cut-off events. [2024-02-20 11:44:58,243 INFO L125 PetriNetUnfolderBase]: For 1024/1024 co-relation queries the response was YES. [2024-02-20 11:44:58,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103802 conditions, 5738 events. 3753/5738 cut-off events. For 1024/1024 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30854 event pairs, 10 based on Foata normal form. 0/4133 useless extension candidates. Maximal degree in co-relation 80037. Up to 5733 conditions per place. [2024-02-20 11:44:58,285 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 567 selfloop transitions, 72 changer transitions 1279/1919 dead transitions. [2024-02-20 11:44:58,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 1919 transitions, 70103 flow [2024-02-20 11:44:58,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:44:58,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:44:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-02-20 11:44:58,286 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.509090909090909 [2024-02-20 11:44:58,286 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2024-02-20 11:44:58,286 INFO L507 AbstractCegarLoop]: Abstraction has has 108 places, 1919 transitions, 70103 flow [2024-02-20 11:44:58,286 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:58,287 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:44:58,287 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:44:58,287 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-02-20 11:44:58,287 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:44:58,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:44:58,287 INFO L85 PathProgramCache]: Analyzing trace with hash -151793061, now seen corresponding path program 7 times [2024-02-20 11:44:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:44:58,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857105551] [2024-02-20 11:44:58,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:44:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:44:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:44:58,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:44:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857105551] [2024-02-20 11:44:58,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857105551] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:58,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887118802] [2024-02-20 11:44:58,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:44:58,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:44:58,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:44:58,509 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 11:44:58,510 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 11:44:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:44:58,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:44:58,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:44:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:44:58,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:44:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:44:58,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887118802] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:44:58,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:44:58,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-02-20 11:44:58,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685042332] [2024-02-20 11:44:58,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:44:58,855 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:44:58,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:44:58,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:44:58,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:44:58,856 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:44:58,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 1919 transitions, 70103 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:44:58,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:44:58,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:44:58,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:45:01,292 INFO L124 PetriNetUnfolderBase]: 3665/5650 cut-off events. [2024-02-20 11:45:01,292 INFO L125 PetriNetUnfolderBase]: For 1012/1012 co-relation queries the response was YES. [2024-02-20 11:45:01,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107866 conditions, 5650 events. 3665/5650 cut-off events. For 1012/1012 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30745 event pairs, 10 based on Foata normal form. 0/4133 useless extension candidates. Maximal degree in co-relation 83250. Up to 5645 conditions per place. [2024-02-20 11:45:01,340 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 561 selfloop transitions, 72 changer transitions 1275/1909 dead transitions. [2024-02-20 11:45:01,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 1909 transitions, 73559 flow [2024-02-20 11:45:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:45:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:45:01,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-02-20 11:45:01,341 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5393939393939394 [2024-02-20 11:45:01,342 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 79 predicate places. [2024-02-20 11:45:01,342 INFO L507 AbstractCegarLoop]: Abstraction has has 112 places, 1909 transitions, 73559 flow [2024-02-20 11:45:01,342 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:45:01,342 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:45:01,342 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:45:01,354 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 11:45:01,542 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:45:01,543 INFO L432 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:45:01,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:45:01,543 INFO L85 PathProgramCache]: Analyzing trace with hash -278850943, now seen corresponding path program 7 times [2024-02-20 11:45:01,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:45:01,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836208479] [2024-02-20 11:45:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:45:01,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:45:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:45:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:45:01,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:45:01,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836208479] [2024-02-20 11:45:01,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836208479] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:45:01,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403623361] [2024-02-20 11:45:01,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:45:01,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:45:01,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:45:01,728 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 11:45:01,751 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 11:45:01,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:45:01,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 7 conjunts are in the unsatisfiable core [2024-02-20 11:45:01,941 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:45:01,963 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:45:01,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:45:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:45:02,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403623361] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:45:02,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:45:02,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2024-02-20 11:45:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594655928] [2024-02-20 11:45:02,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:45:02,004 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:45:02,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:45:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:45:02,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-20 11:45:02,005 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:45:02,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 1909 transitions, 73559 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:45:02,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:45:02,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:45:02,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:45:04,458 INFO L124 PetriNetUnfolderBase]: 3641/5594 cut-off events. [2024-02-20 11:45:04,458 INFO L125 PetriNetUnfolderBase]: For 992/992 co-relation queries the response was YES. [2024-02-20 11:45:04,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112395 conditions, 5594 events. 3641/5594 cut-off events. For 992/992 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30216 event pairs, 10 based on Foata normal form. 0/4165 useless extension candidates. Maximal degree in co-relation 87615. Up to 5590 conditions per place. [2024-02-20 11:45:04,505 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 555 selfloop transitions, 74 changer transitions 1260/1890 dead transitions. [2024-02-20 11:45:04,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 1890 transitions, 76579 flow [2024-02-20 11:45:04,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:45:04,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:45:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-02-20 11:45:04,506 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695 [2024-02-20 11:45:04,506 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 83 predicate places. [2024-02-20 11:45:04,506 INFO L507 AbstractCegarLoop]: Abstraction has has 116 places, 1890 transitions, 76579 flow [2024-02-20 11:45:04,506 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:45:04,506 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:45:04,507 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:45:04,518 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 11:45:04,715 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:45:04,715 INFO L432 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:45:04,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:45:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash -389205025, now seen corresponding path program 8 times [2024-02-20 11:45:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:45:04,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412739025] [2024-02-20 11:45:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:45:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:45:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:45:04,870 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-02-20 11:45:04,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:45:04,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412739025] [2024-02-20 11:45:04,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412739025] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:45:04,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:45:04,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-20 11:45:04,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530572696] [2024-02-20 11:45:04,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:45:04,872 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-20 11:45:04,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:45:04,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-20 11:45:04,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-20 11:45:04,872 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:45:04,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 1890 transitions, 76579 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:45:04,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:45:04,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:45:04,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:45:07,299 INFO L124 PetriNetUnfolderBase]: 3501/5358 cut-off events. [2024-02-20 11:45:07,299 INFO L125 PetriNetUnfolderBase]: For 948/948 co-relation queries the response was YES. [2024-02-20 11:45:07,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113028 conditions, 5358 events. 3501/5358 cut-off events. For 948/948 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 28595 event pairs, 10 based on Foata normal form. 0/4029 useless extension candidates. Maximal degree in co-relation 88148. Up to 5355 conditions per place. [2024-02-20 11:45:07,347 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 503 selfloop transitions, 66 changer transitions 1236/1806 dead transitions. [2024-02-20 11:45:07,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 1806 transitions, 76775 flow [2024-02-20 11:45:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-20 11:45:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-20 11:45:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-02-20 11:45:07,348 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5212121212121212 [2024-02-20 11:45:07,348 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 87 predicate places. [2024-02-20 11:45:07,348 INFO L507 AbstractCegarLoop]: Abstraction has has 120 places, 1806 transitions, 76775 flow [2024-02-20 11:45:07,348 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:45:07,348 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:45:07,349 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:45:07,349 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-02-20 11:45:07,349 INFO L432 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:45:07,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:45:07,349 INFO L85 PathProgramCache]: Analyzing trace with hash 390875321, now seen corresponding path program 1 times [2024-02-20 11:45:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:45:07,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923261751] [2024-02-20 11:45:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:45:07,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:45:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:45:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:45:08,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:45:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923261751] [2024-02-20 11:45:08,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923261751] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:45:08,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144308443] [2024-02-20 11:45:08,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:45:08,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:45:08,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:45:08,744 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 11:45:08,746 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 11:45:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:45:08,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-20 11:45:08,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:45:09,182 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-02-20 11:45:09,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 36 [2024-02-20 11:45:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:45:09,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:45:22,302 INFO L349 Elim1Store]: treesize reduction 28, result has 84.8 percent of original size [2024-02-20 11:45:22,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 187 [2024-02-20 11:45:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:45:23,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144308443] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:45:23,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:45:23,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 31 [2024-02-20 11:45:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110487695] [2024-02-20 11:45:23,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:45:23,486 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-02-20 11:45:23,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:45:23,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-02-20 11:45:23,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=817, Unknown=3, NotChecked=0, Total=930 [2024-02-20 11:45:23,487 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:45:23,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 1806 transitions, 76775 flow. Second operand has 31 states, 31 states have (on average 6.548387096774194) internal successors, (203), 31 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 11:45:23,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:45:23,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:45:23,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:45:31,014 INFO L124 PetriNetUnfolderBase]: 6845/10478 cut-off events. [2024-02-20 11:45:31,015 INFO L125 PetriNetUnfolderBase]: For 1812/1812 co-relation queries the response was YES. [2024-02-20 11:45:31,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231464 conditions, 10478 events. 6845/10478 cut-off events. For 1812/1812 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 62846 event pairs, 0 based on Foata normal form. 3/7736 useless extension candidates. Maximal degree in co-relation 212666. Up to 10473 conditions per place. [2024-02-20 11:45:31,106 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 1026 selfloop transitions, 247 changer transitions 2624/3898 dead transitions. [2024-02-20 11:45:31,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 3898 transitions, 173480 flow [2024-02-20 11:45:31,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-02-20 11:45:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-02-20 11:45:31,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 431 transitions. [2024-02-20 11:45:31,110 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3841354723707665 [2024-02-20 11:45:31,110 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 120 predicate places. [2024-02-20 11:45:31,110 INFO L507 AbstractCegarLoop]: Abstraction has has 153 places, 3898 transitions, 173480 flow [2024-02-20 11:45:31,111 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.548387096774194) internal successors, (203), 31 states have internal predecessors, (203), 0 states have call successors, (0), 0 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 11:45:31,111 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:45:31,111 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:45:31,122 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 11:45:31,311 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:45:31,311 INFO L432 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:45:31,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:45:31,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1815767935, now seen corresponding path program 2 times [2024-02-20 11:45:31,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:45:31,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460914352] [2024-02-20 11:45:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:45:31,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:45:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:45:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-02-20 11:45:33,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:45:33,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460914352] [2024-02-20 11:45:33,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460914352] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:45:33,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487634905] [2024-02-20 11:45:33,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:45:33,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:45:33,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:45:33,991 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 11:45:33,992 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 11:45:34,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:45:34,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:45:34,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 48 conjunts are in the unsatisfiable core [2024-02-20 11:45:34,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:45:34,608 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-02-20 11:45:34,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 26 [2024-02-20 11:45:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:45:34,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:45:35,831 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-20 11:45:35,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 184 [2024-02-20 11:45:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:45:36,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487634905] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:45:36,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:45:36,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 11] total 39 [2024-02-20 11:45:36,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660833009] [2024-02-20 11:45:36,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:45:36,799 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-02-20 11:45:36,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:45:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-02-20 11:45:36,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1326, Unknown=0, NotChecked=0, Total=1482 [2024-02-20 11:45:36,801 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:45:36,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 3898 transitions, 173480 flow. Second operand has 39 states, 39 states have (on average 6.128205128205129) internal successors, (239), 39 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 11:45:36,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:45:36,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:45:36,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:45:48,692 INFO L124 PetriNetUnfolderBase]: 7525/11486 cut-off events. [2024-02-20 11:45:48,692 INFO L125 PetriNetUnfolderBase]: For 1978/1978 co-relation queries the response was YES. [2024-02-20 11:45:48,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265196 conditions, 11486 events. 7525/11486 cut-off events. For 1978/1978 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 69283 event pairs, 0 based on Foata normal form. 2/8415 useless extension candidates. Maximal degree in co-relation 178617. Up to 11481 conditions per place. [2024-02-20 11:45:48,784 INFO L140 encePairwiseOnDemand]: 15/33 looper letters, 1217 selfloop transitions, 202 changer transitions 2870/4290 dead transitions. [2024-02-20 11:45:48,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 4290 transitions, 199474 flow [2024-02-20 11:45:48,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-02-20 11:45:48,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-02-20 11:45:48,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 389 transitions. [2024-02-20 11:45:48,786 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.310207336523126 [2024-02-20 11:45:48,786 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 157 predicate places. [2024-02-20 11:45:48,786 INFO L507 AbstractCegarLoop]: Abstraction has has 190 places, 4290 transitions, 199474 flow [2024-02-20 11:45:48,786 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.128205128205129) internal successors, (239), 39 states have internal predecessors, (239), 0 states have call successors, (0), 0 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 11:45:48,787 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:45:48,787 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:45:48,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-02-20 11:45:48,988 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:45:48,992 INFO L432 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:45:48,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:45:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1291665845, now seen corresponding path program 3 times [2024-02-20 11:45:48,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:45:48,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119724574] [2024-02-20 11:45:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:45:48,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:45:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:45:50,772 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 19 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-02-20 11:45:50,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:45:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119724574] [2024-02-20 11:45:50,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119724574] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:45:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512011637] [2024-02-20 11:45:50,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:45:50,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:45:50,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:45:50,774 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 11:45:50,776 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 11:45:51,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-02-20 11:45:51,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:45:51,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 46 conjunts are in the unsatisfiable core [2024-02-20 11:45:51,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:45:51,286 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-02-20 11:45:51,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 30 [2024-02-20 11:45:51,370 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:45:51,371 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:45:52,625 INFO L349 Elim1Store]: treesize reduction 28, result has 88.8 percent of original size [2024-02-20 11:45:52,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 254 [2024-02-20 11:45:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:45:53,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512011637] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:45:53,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:45:53,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 11] total 34 [2024-02-20 11:45:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589425404] [2024-02-20 11:45:53,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:45:53,606 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-02-20 11:45:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:45:53,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-02-20 11:45:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2024-02-20 11:45:53,607 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:45:53,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 4290 transitions, 199474 flow. Second operand has 34 states, 34 states have (on average 6.235294117647059) internal successors, (212), 34 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 11:45:53,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:45:53,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:45:53,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:46:07,807 INFO L124 PetriNetUnfolderBase]: 7589/11610 cut-off events. [2024-02-20 11:46:07,807 INFO L125 PetriNetUnfolderBase]: For 1988/1988 co-relation queries the response was YES. [2024-02-20 11:46:07,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279672 conditions, 11610 events. 7589/11610 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 70548 event pairs, 0 based on Foata normal form. 1/8498 useless extension candidates. Maximal degree in co-relation 188292. Up to 11605 conditions per place. [2024-02-20 11:46:07,907 INFO L140 encePairwiseOnDemand]: 16/33 looper letters, 1262 selfloop transitions, 168 changer transitions 2931/4362 dead transitions. [2024-02-20 11:46:07,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 4362 transitions, 211556 flow [2024-02-20 11:46:07,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-20 11:46:07,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-20 11:46:07,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 306 transitions. [2024-02-20 11:46:07,909 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-02-20 11:46:07,909 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 183 predicate places. [2024-02-20 11:46:07,909 INFO L507 AbstractCegarLoop]: Abstraction has has 216 places, 4362 transitions, 211556 flow [2024-02-20 11:46:07,909 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.235294117647059) internal successors, (212), 34 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 11:46:07,909 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:46:07,909 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:46:07,923 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-02-20 11:46:08,110 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:46:08,110 INFO L432 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:46:08,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:46:08,112 INFO L85 PathProgramCache]: Analyzing trace with hash 24491459, now seen corresponding path program 4 times [2024-02-20 11:46:08,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:46:08,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286872541] [2024-02-20 11:46:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:46:08,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:46:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:46:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 49 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-02-20 11:46:10,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:46:10,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286872541] [2024-02-20 11:46:10,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286872541] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:46:10,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233279520] [2024-02-20 11:46:10,906 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:46:10,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:46:10,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:46:10,906 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 11:46:10,909 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 11:46:11,157 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:46:11,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:46:11,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 48 conjunts are in the unsatisfiable core [2024-02-20 11:46:11,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:46:11,450 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-02-20 11:46:11,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2024-02-20 11:46:11,560 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:46:11,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:46:12,799 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-20 11:46:12,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 184 [2024-02-20 11:46:13,579 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:46:13,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233279520] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:46:13,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:46:13,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 14, 11] total 44 [2024-02-20 11:46:13,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630187783] [2024-02-20 11:46:13,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:46:13,580 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-02-20 11:46:13,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:46:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-02-20 11:46:13,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1699, Unknown=0, NotChecked=0, Total=1892 [2024-02-20 11:46:13,581 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:46:13,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 4362 transitions, 211556 flow. Second operand has 44 states, 44 states have (on average 5.886363636363637) internal successors, (259), 44 states have internal predecessors, (259), 0 states have call successors, (0), 0 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 11:46:13,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:46:13,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:46:13,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:46:33,257 INFO L124 PetriNetUnfolderBase]: 8666/13339 cut-off events. [2024-02-20 11:46:33,258 INFO L125 PetriNetUnfolderBase]: For 2388/2388 co-relation queries the response was YES. [2024-02-20 11:46:33,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334597 conditions, 13339 events. 8666/13339 cut-off events. For 2388/2388 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 82911 event pairs, 6 based on Foata normal form. 4/9633 useless extension candidates. Maximal degree in co-relation 222327. Up to 13329 conditions per place. [2024-02-20 11:46:33,373 INFO L140 encePairwiseOnDemand]: 15/33 looper letters, 1418 selfloop transitions, 260 changer transitions 3364/5043 dead transitions. [2024-02-20 11:46:33,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 5043 transitions, 254712 flow [2024-02-20 11:46:33,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-02-20 11:46:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-02-20 11:46:33,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 453 transitions. [2024-02-20 11:46:33,375 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3268398268398268 [2024-02-20 11:46:33,376 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 224 predicate places. [2024-02-20 11:46:33,376 INFO L507 AbstractCegarLoop]: Abstraction has has 257 places, 5043 transitions, 254712 flow [2024-02-20 11:46:33,376 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.886363636363637) internal successors, (259), 44 states have internal predecessors, (259), 0 states have call successors, (0), 0 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 11:46:33,376 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:46:33,376 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:46:33,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-20 11:46:33,584 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:46:33,584 INFO L432 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:46:33,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:46:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1554381529, now seen corresponding path program 5 times [2024-02-20 11:46:33,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:46:33,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212130497] [2024-02-20 11:46:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:46:33,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:46:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:46:35,040 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:46:35,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:46:35,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212130497] [2024-02-20 11:46:35,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212130497] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:46:35,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928894474] [2024-02-20 11:46:35,041 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:46:35,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:46:35,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:46:35,042 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 11:46:35,043 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 11:46:35,709 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-02-20 11:46:35,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:46:35,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 45 conjunts are in the unsatisfiable core [2024-02-20 11:46:35,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:46:36,077 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2024-02-20 11:46:36,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 38 [2024-02-20 11:46:36,137 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-02-20 11:46:36,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:46:37,124 INFO L349 Elim1Store]: treesize reduction 28, result has 88.8 percent of original size [2024-02-20 11:46:37,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 254 [2024-02-20 11:46:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-02-20 11:46:37,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928894474] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:46:37,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:46:37,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 35 [2024-02-20 11:46:37,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859070582] [2024-02-20 11:46:37,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:46:37,293 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-02-20 11:46:37,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:46:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-02-20 11:46:37,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1052, Unknown=0, NotChecked=0, Total=1190 [2024-02-20 11:46:37,295 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:46:37,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 5043 transitions, 254712 flow. Second operand has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 35 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 11:46:37,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:46:37,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:46:37,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:47:06,324 INFO L124 PetriNetUnfolderBase]: 12738/19495 cut-off events. [2024-02-20 11:47:06,325 INFO L125 PetriNetUnfolderBase]: For 3278/3278 co-relation queries the response was YES. [2024-02-20 11:47:06,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508297 conditions, 19495 events. 12738/19495 cut-off events. For 3278/3278 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 128341 event pairs, 2 based on Foata normal form. 2/13955 useless extension candidates. Maximal degree in co-relation 335002. Up to 19479 conditions per place. [2024-02-20 11:47:06,524 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 2098 selfloop transitions, 401 changer transitions 4830/7330 dead transitions. [2024-02-20 11:47:06,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 7330 transitions, 384812 flow [2024-02-20 11:47:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-02-20 11:47:06,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-02-20 11:47:06,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 367 transitions. [2024-02-20 11:47:06,525 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3707070707070707 [2024-02-20 11:47:06,526 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 253 predicate places. [2024-02-20 11:47:06,526 INFO L507 AbstractCegarLoop]: Abstraction has has 286 places, 7330 transitions, 384812 flow [2024-02-20 11:47:06,526 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.542857142857143) internal successors, (229), 35 states have internal predecessors, (229), 0 states have call successors, (0), 0 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 11:47:06,526 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:47:06,526 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:47:06,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-20 11:47:06,726 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,SelfDestructingSolverStorable24 [2024-02-20 11:47:06,727 INFO L432 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:47:06,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:47:06,727 INFO L85 PathProgramCache]: Analyzing trace with hash -651786697, now seen corresponding path program 6 times [2024-02-20 11:47:06,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:47:06,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204084793] [2024-02-20 11:47:06,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:47:06,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:47:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:47:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 37 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-02-20 11:47:08,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:47:08,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204084793] [2024-02-20 11:47:08,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204084793] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:47:08,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013378569] [2024-02-20 11:47:08,638 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:47:08,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:47:08,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:47:08,639 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 11:47:08,640 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 11:47:08,922 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-02-20 11:47:08,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:47:08,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 51 conjunts are in the unsatisfiable core [2024-02-20 11:47:08,926 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:47:09,209 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-02-20 11:47:09,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 30 [2024-02-20 11:47:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-02-20 11:47:09,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:47:10,525 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-20 11:47:10,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 184 [2024-02-20 11:47:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-02-20 11:47:11,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013378569] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:47:11,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:47:11,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 15, 11] total 40 [2024-02-20 11:47:11,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683969661] [2024-02-20 11:47:11,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:47:11,271 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-02-20 11:47:11,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:47:11,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-02-20 11:47:11,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1397, Unknown=0, NotChecked=0, Total=1560 [2024-02-20 11:47:11,272 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:47:11,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 7330 transitions, 384812 flow. Second operand has 40 states, 40 states have (on average 6.1) internal successors, (244), 40 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 11:47:11,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:47:11,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:47:11,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:48:04,288 INFO L124 PetriNetUnfolderBase]: 13786/21177 cut-off events. [2024-02-20 11:48:04,288 INFO L125 PetriNetUnfolderBase]: For 3588/3588 co-relation queries the response was YES. [2024-02-20 11:48:04,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573273 conditions, 21177 events. 13786/21177 cut-off events. For 3588/3588 co-relation queries the response was YES. Maximal size of possible extension queue 1021. Compared 141766 event pairs, 0 based on Foata normal form. 4/15055 useless extension candidates. Maximal degree in co-relation 376173. Up to 21154 conditions per place. [2024-02-20 11:48:04,497 INFO L140 encePairwiseOnDemand]: 14/33 looper letters, 2417 selfloop transitions, 327 changer transitions 5290/8035 dead transitions. [2024-02-20 11:48:04,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 8035 transitions, 437936 flow [2024-02-20 11:48:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-02-20 11:48:04,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-02-20 11:48:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 458 transitions. [2024-02-20 11:48:04,498 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.33044733044733043 [2024-02-20 11:48:04,499 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 294 predicate places. [2024-02-20 11:48:04,499 INFO L507 AbstractCegarLoop]: Abstraction has has 327 places, 8035 transitions, 437936 flow [2024-02-20 11:48:04,499 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.1) internal successors, (244), 40 states have internal predecessors, (244), 0 states have call successors, (0), 0 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 11:48:04,499 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:48:04,499 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:48:04,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-20 11:48:04,700 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,SelfDestructingSolverStorable25 [2024-02-20 11:48:04,700 INFO L432 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:48:04,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:48:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2138961319, now seen corresponding path program 7 times [2024-02-20 11:48:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:48:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635269264] [2024-02-20 11:48:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:48:04,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:48:04,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:48:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:48:06,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:48:06,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635269264] [2024-02-20 11:48:06,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635269264] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:48:06,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597730339] [2024-02-20 11:48:06,175 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:48:06,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:48:06,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:48:06,176 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 11:48:06,177 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 11:48:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:48:06,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 34 conjunts are in the unsatisfiable core [2024-02-20 11:48:06,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:48:06,609 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2024-02-20 11:48:06,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 38 [2024-02-20 11:48:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:48:06,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:48:35,857 INFO L349 Elim1Store]: treesize reduction 28, result has 84.8 percent of original size [2024-02-20 11:48:35,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 112 treesize of output 187 [2024-02-20 11:48:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:48:37,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597730339] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:48:37,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:48:37,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 32 [2024-02-20 11:48:37,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150037515] [2024-02-20 11:48:37,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:48:37,157 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-02-20 11:48:37,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:48:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-02-20 11:48:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=860, Unknown=7, NotChecked=0, Total=992 [2024-02-20 11:48:37,158 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:48:37,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 8035 transitions, 437936 flow. Second operand has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 11:48:37,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:48:37,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:48:37,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:49:39,278 INFO L124 PetriNetUnfolderBase]: 14618/22533 cut-off events. [2024-02-20 11:49:39,278 INFO L125 PetriNetUnfolderBase]: For 3896/3896 co-relation queries the response was YES. [2024-02-20 11:49:39,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632486 conditions, 22533 events. 14618/22533 cut-off events. For 3896/3896 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 152770 event pairs, 0 based on Foata normal form. 4/15955 useless extension candidates. Maximal degree in co-relation 413168. Up to 22508 conditions per place. [2024-02-20 11:49:39,644 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 2626 selfloop transitions, 269 changer transitions 5667/8563 dead transitions. [2024-02-20 11:49:39,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 8563 transitions, 483896 flow [2024-02-20 11:49:39,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-02-20 11:49:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-02-20 11:49:39,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 370 transitions. [2024-02-20 11:49:39,646 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.38662486938349006 [2024-02-20 11:49:39,646 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 322 predicate places. [2024-02-20 11:49:39,646 INFO L507 AbstractCegarLoop]: Abstraction has has 355 places, 8563 transitions, 483896 flow [2024-02-20 11:49:39,646 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.5) internal successors, (208), 32 states have internal predecessors, (208), 0 states have call successors, (0), 0 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 11:49:39,646 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:49:39,646 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:49:39,658 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 11:49:39,846 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-02-20 11:49:39,847 INFO L432 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:49:39,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:49:39,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1669184967, now seen corresponding path program 8 times [2024-02-20 11:49:39,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:49:39,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64496390] [2024-02-20 11:49:39,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:49:39,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:49:39,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:49:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 50 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-02-20 11:49:42,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:49:42,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64496390] [2024-02-20 11:49:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64496390] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:49:42,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819953706] [2024-02-20 11:49:42,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:49:42,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:49:42,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:49:42,710 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 11:49:42,711 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 11:49:42,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:49:42,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:49:42,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 48 conjunts are in the unsatisfiable core [2024-02-20 11:49:42,945 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:49:43,506 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2024-02-20 11:49:43,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 22 [2024-02-20 11:49:43,586 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:49:43,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:49:44,505 INFO L349 Elim1Store]: treesize reduction 28, result has 84.5 percent of original size [2024-02-20 11:49:44,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 94 treesize of output 182 [2024-02-20 11:49:45,376 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-02-20 11:49:45,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819953706] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:49:45,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:49:45,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 14, 11] total 46 [2024-02-20 11:49:45,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733759764] [2024-02-20 11:49:45,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:49:45,378 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-02-20 11:49:45,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:49:45,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-02-20 11:49:45,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1880, Unknown=0, NotChecked=0, Total=2070 [2024-02-20 11:49:45,381 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:49:45,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 8563 transitions, 483896 flow. Second operand has 46 states, 46 states have (on average 6.065217391304348) internal successors, (279), 46 states have internal predecessors, (279), 0 states have call successors, (0), 0 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 11:49:45,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:49:45,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:49:45,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:49:53,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-02-20 11:52:04,939 INFO L124 PetriNetUnfolderBase]: 26347/40878 cut-off events. [2024-02-20 11:52:04,940 INFO L125 PetriNetUnfolderBase]: For 6892/6892 co-relation queries the response was YES. [2024-02-20 11:52:04,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188207 conditions, 40878 events. 26347/40878 cut-off events. For 6892/6892 co-relation queries the response was YES. Maximal size of possible extension queue 1965. Compared 307192 event pairs, 2 based on Foata normal form. 3/28987 useless extension candidates. Maximal degree in co-relation 762130. Up to 40831 conditions per place. [2024-02-20 11:52:05,436 INFO L140 encePairwiseOnDemand]: 14/33 looper letters, 4260 selfloop transitions, 960 changer transitions 9964/15185 dead transitions. [2024-02-20 11:52:05,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 15185 transitions, 888888 flow [2024-02-20 11:52:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-02-20 11:52:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2024-02-20 11:52:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 732 transitions. [2024-02-20 11:52:05,440 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.3214756258234519 [2024-02-20 11:52:05,440 INFO L308 CegarLoopForPetriNet]: 33 programPoint places, 390 predicate places. [2024-02-20 11:52:05,440 INFO L507 AbstractCegarLoop]: Abstraction has has 423 places, 15185 transitions, 888888 flow [2024-02-20 11:52:05,441 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.065217391304348) internal successors, (279), 46 states have internal predecessors, (279), 0 states have call successors, (0), 0 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 11:52:05,441 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:52:05,441 INFO L234 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-20 11:52:05,455 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 11:52:05,655 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:52:05,655 INFO L432 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:52:05,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:52:05,656 INFO L85 PathProgramCache]: Analyzing trace with hash 609556301, now seen corresponding path program 9 times [2024-02-20 11:52:05,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:52:05,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235272814] [2024-02-20 11:52:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:52:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:52:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:52:06,978 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-02-20 11:52:06,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:52:06,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235272814] [2024-02-20 11:52:06,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235272814] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:52:06,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833603479] [2024-02-20 11:52:06,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:52:06,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:52:06,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:52:06,981 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 11:52:06,981 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 11:52:07,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-02-20 11:52:07,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:52:07,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 46 conjunts are in the unsatisfiable core [2024-02-20 11:52:07,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:52:07,576 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-02-20 11:52:07,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 30 [2024-02-20 11:52:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-02-20 11:52:07,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:52:08,696 INFO L349 Elim1Store]: treesize reduction 28, result has 88.8 percent of original size [2024-02-20 11:52:08,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 114 treesize of output 254 [2024-02-20 11:52:09,154 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-02-20 11:52:09,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833603479] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:52:09,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:52:09,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 11] total 32 [2024-02-20 11:52:09,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877211981] [2024-02-20 11:52:09,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:52:09,155 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-02-20 11:52:09,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:52:09,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-02-20 11:52:09,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=871, Unknown=0, NotChecked=0, Total=992 [2024-02-20 11:52:09,156 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-02-20 11:52:09,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 15185 transitions, 888888 flow. Second operand has 32 states, 32 states have (on average 6.59375) internal successors, (211), 32 states have internal predecessors, (211), 0 states have call successors, (0), 0 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 11:52:09,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:52:09,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-02-20 11:52:09,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15