./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp2x4.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 f64e270e7d8e8fe7bf3b7cd641a237e1a4059fd56c14ffbabdcef7751fd05704 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:14:10,633 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:14:10,722 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:14:10,733 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:14:10,734 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:14:10,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:14:10,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:14:10,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:14:10,762 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:14:10,765 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:14:10,765 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:14:10,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:14:10,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:14:10,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:14:10,767 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:14:10,768 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:14:10,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:14:10,768 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:14:10,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:14:10,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:14:10,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:14:10,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:14:10,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:14:10,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:14:10,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:14:10,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:14:10,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:14:10,771 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:14:10,771 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:14:10,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:14:10,772 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:14:10,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:14:10,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:14:10,773 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:14:10,773 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:14:10,773 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:14:10,773 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:14:10,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:14:10,774 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:14:10,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:14:10,774 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:14:10,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:14:10,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:14:10,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f64e270e7d8e8fe7bf3b7cd641a237e1a4059fd56c14ffbabdcef7751fd05704 [2024-01-27 15:14:10,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:14:11,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:14:11,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:14:11,011 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:14:11,011 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:14:11,012 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c [2024-01-27 15:14:12,064 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:14:12,250 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:14:12,250 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp2x4.wvr.c [2024-01-27 15:14:12,256 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac312e83/eff520960117446e9991fc41c1c70814/FLAG1b98f56a0 [2024-01-27 15:14:12,276 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bac312e83/eff520960117446e9991fc41c1c70814 [2024-01-27 15:14:12,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:14:12,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:14:12,282 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:14:12,282 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:14:12,285 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:14:12,286 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,286 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278e6dca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12, skipping insertion in model container [2024-01-27 15:14:12,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,306 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:14:12,469 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/bench-exp2x4.wvr.c[2361,2374] [2024-01-27 15:14:12,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:14:12,484 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:14:12,518 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/bench-exp2x4.wvr.c[2361,2374] [2024-01-27 15:14:12,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:14:12,531 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:14:12,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12 WrapperNode [2024-01-27 15:14:12,532 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:14:12,533 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:14:12,533 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:14:12,534 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:14:12,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,552 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,575 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2024-01-27 15:14:12,576 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:14:12,576 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:14:12,576 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:14:12,577 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:14:12,585 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,595 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,616 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-01-27 15:14:12,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,627 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,635 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,636 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:14:12,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:14:12,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:14:12,642 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:14:12,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (1/1) ... [2024-01-27 15:14:12,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:14:12,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:14:12,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:14:12,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:14:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:14:12,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:14:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:14:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:14:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:14:12,717 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:14:12,717 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:14:12,718 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:14:12,719 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:14:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:14:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:14:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:14:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:14:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:14:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:14:12,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:14:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:14:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:14:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:14:12,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:14:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:14:12,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:14:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:14:12,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:14:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:14:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:14:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:14:12,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:14:12,724 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:14:12,835 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:14:12,836 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:14:12,997 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:14:12,997 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:14:13,126 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:14:13,127 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 15:14:13,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:14:13 BoogieIcfgContainer [2024-01-27 15:14:13,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:14:13,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:14:13,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:14:13,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:14:13,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:14:12" (1/3) ... [2024-01-27 15:14:13,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c9822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:14:13, skipping insertion in model container [2024-01-27 15:14:13,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:14:12" (2/3) ... [2024-01-27 15:14:13,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c9822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:14:13, skipping insertion in model container [2024-01-27 15:14:13,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:14:13" (3/3) ... [2024-01-27 15:14:13,134 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x4.wvr.c [2024-01-27 15:14:13,140 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:14:13,147 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:14:13,147 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:14:13,147 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:14:13,196 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:14:13,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 35 transitions, 98 flow [2024-01-27 15:14:13,263 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-01-27 15:14:13,263 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:14:13,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 31 events. 4/31 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 25. Up to 2 conditions per place. [2024-01-27 15:14:13,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 35 transitions, 98 flow [2024-01-27 15:14:13,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 30 transitions, 84 flow [2024-01-27 15:14:13,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:14:13,288 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5d6a77ae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:14:13,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:14:13,325 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:14:13,325 INFO L124 PetriNetUnfolderBase]: 4/29 cut-off events. [2024-01-27 15:14:13,325 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:14:13,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:13,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:13,327 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:13,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash 253207303, now seen corresponding path program 1 times [2024-01-27 15:14:13,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:13,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259526491] [2024-01-27 15:14:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:13,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:13,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259526491] [2024-01-27 15:14:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259526491] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:14:13,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:14:13,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:14:13,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250235658] [2024-01-27 15:14:13,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:14:13,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:14:13,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:13,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:14:13,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:14:13,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:13,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 30 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:13,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:13,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:13,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:14,084 INFO L124 PetriNetUnfolderBase]: 1537/1955 cut-off events. [2024-01-27 15:14:14,085 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-01-27 15:14:14,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 1955 events. 1537/1955 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 6342 event pairs, 141 based on Foata normal form. 1/1135 useless extension candidates. Maximal degree in co-relation 3091. Up to 1733 conditions per place. [2024-01-27 15:14:14,098 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 41 selfloop transitions, 5 changer transitions 1/52 dead transitions. [2024-01-27 15:14:14,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 52 transitions, 243 flow [2024-01-27 15:14:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:14:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:14:14,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-01-27 15:14:14,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-01-27 15:14:14,109 INFO L175 Difference]: Start difference. First operand has 39 places, 30 transitions, 84 flow. Second operand 3 states and 75 transitions. [2024-01-27 15:14:14,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 52 transitions, 243 flow [2024-01-27 15:14:14,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 52 transitions, 213 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:14:14,117 INFO L231 Difference]: Finished difference. Result has 34 places, 34 transitions, 101 flow [2024-01-27 15:14:14,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=34, PETRI_TRANSITIONS=34} [2024-01-27 15:14:14,121 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2024-01-27 15:14:14,121 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 34 transitions, 101 flow [2024-01-27 15:14:14,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:14,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:14,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:14,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:14:14,122 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:14,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:14,123 INFO L85 PathProgramCache]: Analyzing trace with hash -805030782, now seen corresponding path program 1 times [2024-01-27 15:14:14,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:14,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187693505] [2024-01-27 15:14:14,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:14,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:14,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:14,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187693505] [2024-01-27 15:14:14,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187693505] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:14:14,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:14:14,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:14:14,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792167818] [2024-01-27 15:14:14,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:14:14,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:14:14,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:14,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:14:14,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:14:14,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:14,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 34 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:14,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:14,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:14,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:14,524 INFO L124 PetriNetUnfolderBase]: 1843/2368 cut-off events. [2024-01-27 15:14:14,524 INFO L125 PetriNetUnfolderBase]: For 579/579 co-relation queries the response was YES. [2024-01-27 15:14:14,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5874 conditions, 2368 events. 1843/2368 cut-off events. For 579/579 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8344 event pairs, 139 based on Foata normal form. 34/2396 useless extension candidates. Maximal degree in co-relation 1448. Up to 967 conditions per place. [2024-01-27 15:14:14,537 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 72 selfloop transitions, 10 changer transitions 0/87 dead transitions. [2024-01-27 15:14:14,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 87 transitions, 415 flow [2024-01-27 15:14:14,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:14:14,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:14:14,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-01-27 15:14:14,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6914285714285714 [2024-01-27 15:14:14,542 INFO L175 Difference]: Start difference. First operand has 34 places, 34 transitions, 101 flow. Second operand 5 states and 121 transitions. [2024-01-27 15:14:14,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 87 transitions, 415 flow [2024-01-27 15:14:14,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 87 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-27 15:14:14,548 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 161 flow [2024-01-27 15:14:14,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2024-01-27 15:14:14,549 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 0 predicate places. [2024-01-27 15:14:14,549 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 161 flow [2024-01-27 15:14:14,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:14,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:14,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:14,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:14:14,550 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:14,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:14,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1237410086, now seen corresponding path program 1 times [2024-01-27 15:14:14,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:14,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796938808] [2024-01-27 15:14:14,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:14,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:14,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:14,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796938808] [2024-01-27 15:14:14,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796938808] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:14:14,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:14:14,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:14:14,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300027744] [2024-01-27 15:14:14,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:14:14,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:14:14,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:14:14,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:14:14,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:14,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:14,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:14,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:14,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:14,902 INFO L124 PetriNetUnfolderBase]: 2211/2949 cut-off events. [2024-01-27 15:14:14,902 INFO L125 PetriNetUnfolderBase]: For 3599/3599 co-relation queries the response was YES. [2024-01-27 15:14:14,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8999 conditions, 2949 events. 2211/2949 cut-off events. For 3599/3599 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11935 event pairs, 330 based on Foata normal form. 80/3005 useless extension candidates. Maximal degree in co-relation 3490. Up to 1265 conditions per place. [2024-01-27 15:14:14,918 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 90 selfloop transitions, 8 changer transitions 0/103 dead transitions. [2024-01-27 15:14:14,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 103 transitions, 615 flow [2024-01-27 15:14:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:14:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:14:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-01-27 15:14:14,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.68 [2024-01-27 15:14:14,922 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 161 flow. Second operand 5 states and 119 transitions. [2024-01-27 15:14:14,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 103 transitions, 615 flow [2024-01-27 15:14:14,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 103 transitions, 615 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:14:14,927 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 216 flow [2024-01-27 15:14:14,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2024-01-27 15:14:14,928 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2024-01-27 15:14:14,928 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 216 flow [2024-01-27 15:14:14,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:14,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:14,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:14,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:14:14,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:14,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:14,930 INFO L85 PathProgramCache]: Analyzing trace with hash -898924580, now seen corresponding path program 2 times [2024-01-27 15:14:14,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:14,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663020830] [2024-01-27 15:14:14,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:14,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:15,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:15,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:15,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663020830] [2024-01-27 15:14:15,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663020830] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:14:15,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:14:15,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:14:15,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505709306] [2024-01-27 15:14:15,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:14:15,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:14:15,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:15,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:14:15,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:14:15,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:15,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:15,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:15,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:15,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:15,260 INFO L124 PetriNetUnfolderBase]: 2111/2831 cut-off events. [2024-01-27 15:14:15,260 INFO L125 PetriNetUnfolderBase]: For 4771/4771 co-relation queries the response was YES. [2024-01-27 15:14:15,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 2831 events. 2111/2831 cut-off events. For 4771/4771 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 11740 event pairs, 435 based on Foata normal form. 104/2925 useless extension candidates. Maximal degree in co-relation 5299. Up to 1605 conditions per place. [2024-01-27 15:14:15,276 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 90 selfloop transitions, 10 changer transitions 0/105 dead transitions. [2024-01-27 15:14:15,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 105 transitions, 677 flow [2024-01-27 15:14:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:14:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:14:15,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 121 transitions. [2024-01-27 15:14:15,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6914285714285714 [2024-01-27 15:14:15,278 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 216 flow. Second operand 5 states and 121 transitions. [2024-01-27 15:14:15,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 105 transitions, 677 flow [2024-01-27 15:14:15,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 105 transitions, 677 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-27 15:14:15,288 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 270 flow [2024-01-27 15:14:15,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=270, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-01-27 15:14:15,289 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 13 predicate places. [2024-01-27 15:14:15,289 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 270 flow [2024-01-27 15:14:15,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:15,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:15,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:15,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:14:15,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:15,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:15,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1209120303, now seen corresponding path program 1 times [2024-01-27 15:14:15,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:15,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760722464] [2024-01-27 15:14:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:15,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:15,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:15,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:15,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760722464] [2024-01-27 15:14:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760722464] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:14:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:14:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:14:15,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87062926] [2024-01-27 15:14:15,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:14:15,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:14:15,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:15,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:14:15,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:14:15,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:15,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:15,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:15,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:15,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:15,596 INFO L124 PetriNetUnfolderBase]: 2045/2752 cut-off events. [2024-01-27 15:14:15,596 INFO L125 PetriNetUnfolderBase]: For 7525/7525 co-relation queries the response was YES. [2024-01-27 15:14:15,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11166 conditions, 2752 events. 2045/2752 cut-off events. For 7525/7525 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11568 event pairs, 165 based on Foata normal form. 66/2814 useless extension candidates. Maximal degree in co-relation 5677. Up to 1169 conditions per place. [2024-01-27 15:14:15,614 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 91 selfloop transitions, 8 changer transitions 0/104 dead transitions. [2024-01-27 15:14:15,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 104 transitions, 701 flow [2024-01-27 15:14:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:14:15,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:14:15,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-01-27 15:14:15,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2024-01-27 15:14:15,616 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 270 flow. Second operand 5 states and 120 transitions. [2024-01-27 15:14:15,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 104 transitions, 701 flow [2024-01-27 15:14:15,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 104 transitions, 692 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-01-27 15:14:15,626 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 275 flow [2024-01-27 15:14:15,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=275, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-01-27 15:14:15,627 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2024-01-27 15:14:15,627 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 275 flow [2024-01-27 15:14:15,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:15,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:15,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:15,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:14:15,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:15,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1647566839, now seen corresponding path program 1 times [2024-01-27 15:14:15,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:15,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210776795] [2024-01-27 15:14:15,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:15,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:15,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210776795] [2024-01-27 15:14:15,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210776795] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:14:15,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:14:15,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:14:15,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362412230] [2024-01-27 15:14:15,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:14:15,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:14:15,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:15,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:14:15,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:14:15,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:15,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:15,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:15,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:15,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:15,915 INFO L124 PetriNetUnfolderBase]: 2003/2728 cut-off events. [2024-01-27 15:14:15,915 INFO L125 PetriNetUnfolderBase]: For 8519/8519 co-relation queries the response was YES. [2024-01-27 15:14:15,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11350 conditions, 2728 events. 2003/2728 cut-off events. For 8519/8519 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 11096 event pairs, 75 based on Foata normal form. 42/2748 useless extension candidates. Maximal degree in co-relation 5727. Up to 1137 conditions per place. [2024-01-27 15:14:15,931 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 104 selfloop transitions, 10 changer transitions 0/119 dead transitions. [2024-01-27 15:14:15,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 119 transitions, 937 flow [2024-01-27 15:14:15,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:14:15,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:14:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-01-27 15:14:15,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6685714285714286 [2024-01-27 15:14:15,933 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 275 flow. Second operand 5 states and 117 transitions. [2024-01-27 15:14:15,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 119 transitions, 937 flow [2024-01-27 15:14:15,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 119 transitions, 912 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-27 15:14:15,941 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 329 flow [2024-01-27 15:14:15,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2024-01-27 15:14:15,942 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 21 predicate places. [2024-01-27 15:14:15,942 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 329 flow [2024-01-27 15:14:15,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:15,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:15,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:15,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:14:15,943 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:15,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:15,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1546592094, now seen corresponding path program 2 times [2024-01-27 15:14:15,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:15,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122133570] [2024-01-27 15:14:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:15,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:15,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:15,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:15,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122133570] [2024-01-27 15:14:15,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122133570] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:14:15,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:14:15,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:14:15,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631537830] [2024-01-27 15:14:15,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:14:16,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:14:16,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:16,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:14:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:14:16,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:16,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 329 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:16,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:16,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:16,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:16,207 INFO L124 PetriNetUnfolderBase]: 1801/2440 cut-off events. [2024-01-27 15:14:16,207 INFO L125 PetriNetUnfolderBase]: For 7823/7823 co-relation queries the response was YES. [2024-01-27 15:14:16,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10810 conditions, 2440 events. 1801/2440 cut-off events. For 7823/7823 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9479 event pairs, 99 based on Foata normal form. 38/2456 useless extension candidates. Maximal degree in co-relation 6696. Up to 987 conditions per place. [2024-01-27 15:14:16,225 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 98 selfloop transitions, 9 changer transitions 4/116 dead transitions. [2024-01-27 15:14:16,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 116 transitions, 917 flow [2024-01-27 15:14:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:14:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:14:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-01-27 15:14:16,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6628571428571428 [2024-01-27 15:14:16,227 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 329 flow. Second operand 5 states and 116 transitions. [2024-01-27 15:14:16,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 116 transitions, 917 flow [2024-01-27 15:14:16,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 116 transitions, 904 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-27 15:14:16,236 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 329 flow [2024-01-27 15:14:16,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=329, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-01-27 15:14:16,237 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-01-27 15:14:16,237 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 329 flow [2024-01-27 15:14:16,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:16,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:16,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:16,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:14:16,238 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:16,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:16,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1456034979, now seen corresponding path program 2 times [2024-01-27 15:14:16,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:16,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723083688] [2024-01-27 15:14:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:16,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:16,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723083688] [2024-01-27 15:14:16,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723083688] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:14:16,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859500203] [2024-01-27 15:14:16,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:14:16,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:14:16,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:14:16,326 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) [2024-01-27 15:14:16,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:14:16,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:14:16,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:14:16,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:14:16,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:14:16,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:16,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:14:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:16,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859500203] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:14:16,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:14:16,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-27 15:14:16,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127167032] [2024-01-27 15:14:16,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:14:16,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:14:16,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:16,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:14:16,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:14:16,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:16,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 329 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:16,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:16,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:16,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:16,938 INFO L124 PetriNetUnfolderBase]: 1725/2376 cut-off events. [2024-01-27 15:14:16,938 INFO L125 PetriNetUnfolderBase]: For 8106/8106 co-relation queries the response was YES. [2024-01-27 15:14:16,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10854 conditions, 2376 events. 1725/2376 cut-off events. For 8106/8106 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 9845 event pairs, 293 based on Foata normal form. 76/2430 useless extension candidates. Maximal degree in co-relation 6831. Up to 1307 conditions per place. [2024-01-27 15:14:16,953 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 101 selfloop transitions, 8 changer transitions 0/114 dead transitions. [2024-01-27 15:14:16,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 114 transitions, 929 flow [2024-01-27 15:14:16,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:14:16,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:14:16,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-01-27 15:14:16,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6457142857142857 [2024-01-27 15:14:16,954 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 329 flow. Second operand 5 states and 113 transitions. [2024-01-27 15:14:16,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 114 transitions, 929 flow [2024-01-27 15:14:16,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 114 transitions, 920 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:14:16,960 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 370 flow [2024-01-27 15:14:16,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-01-27 15:14:16,961 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 30 predicate places. [2024-01-27 15:14:16,961 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 370 flow [2024-01-27 15:14:16,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:16,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:16,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:16,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 15:14:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:14:17,173 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:17,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash -310563479, now seen corresponding path program 2 times [2024-01-27 15:14:17,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:17,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438582159] [2024-01-27 15:14:17,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:17,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:17,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:17,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438582159] [2024-01-27 15:14:17,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438582159] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:14:17,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589434336] [2024-01-27 15:14:17,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:14:17,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:14:17,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:14:17,244 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) [2024-01-27 15:14:17,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:14:17,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:14:17,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:14:17,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 3 conjunts are in the unsatisfiable core [2024-01-27 15:14:17,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:14:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:17,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:14:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:17,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589434336] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:14:17,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:14:17,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-01-27 15:14:17,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032799743] [2024-01-27 15:14:17,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:14:17,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:14:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:17,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:14:17,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:14:17,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:17,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:17,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:17,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:17,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:17,710 INFO L124 PetriNetUnfolderBase]: 1657/2291 cut-off events. [2024-01-27 15:14:17,710 INFO L125 PetriNetUnfolderBase]: For 8385/8385 co-relation queries the response was YES. [2024-01-27 15:14:17,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11190 conditions, 2291 events. 1657/2291 cut-off events. For 8385/8385 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9681 event pairs, 481 based on Foata normal form. 68/2349 useless extension candidates. Maximal degree in co-relation 9804. Up to 1331 conditions per place. [2024-01-27 15:14:17,726 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 117 selfloop transitions, 8 changer transitions 0/130 dead transitions. [2024-01-27 15:14:17,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 130 transitions, 1118 flow [2024-01-27 15:14:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:14:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:14:17,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 117 transitions. [2024-01-27 15:14:17,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6685714285714286 [2024-01-27 15:14:17,728 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 370 flow. Second operand 5 states and 117 transitions. [2024-01-27 15:14:17,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 130 transitions, 1118 flow [2024-01-27 15:14:17,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 130 transitions, 1060 flow, removed 20 selfloop flow, removed 2 redundant places. [2024-01-27 15:14:17,737 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 407 flow [2024-01-27 15:14:17,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=407, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2024-01-27 15:14:17,737 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 34 predicate places. [2024-01-27 15:14:17,738 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 407 flow [2024-01-27 15:14:17,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:17,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:17,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:17,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:14:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-01-27 15:14:17,953 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:17,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -912891806, now seen corresponding path program 1 times [2024-01-27 15:14:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132415974] [2024-01-27 15:14:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:17,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:18,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132415974] [2024-01-27 15:14:18,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132415974] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:14:18,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080327224] [2024-01-27 15:14:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:18,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:14:18,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:14:18,376 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) [2024-01-27 15:14:18,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:14:18,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:18,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 15:14:18,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:14:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:24,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:14:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:25,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080327224] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:14:25,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:14:25,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-01-27 15:14:25,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888955733] [2024-01-27 15:14:25,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:14:25,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-27 15:14:25,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:25,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-27 15:14:25,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=168, Unknown=1, NotChecked=0, Total=240 [2024-01-27 15:14:25,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:25,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 58 transitions, 407 flow. Second operand has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:25,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:25,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:25,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:30,717 INFO L124 PetriNetUnfolderBase]: 3569/4973 cut-off events. [2024-01-27 15:14:30,718 INFO L125 PetriNetUnfolderBase]: For 16678/16678 co-relation queries the response was YES. [2024-01-27 15:14:30,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25058 conditions, 4973 events. 3569/4973 cut-off events. For 16678/16678 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 23983 event pairs, 195 based on Foata normal form. 25/4988 useless extension candidates. Maximal degree in co-relation 23018. Up to 2619 conditions per place. [2024-01-27 15:14:30,749 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 242 selfloop transitions, 100 changer transitions 18/365 dead transitions. [2024-01-27 15:14:30,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 365 transitions, 2900 flow [2024-01-27 15:14:30,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-27 15:14:30,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-27 15:14:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 406 transitions. [2024-01-27 15:14:30,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.725 [2024-01-27 15:14:30,752 INFO L175 Difference]: Start difference. First operand has 73 places, 58 transitions, 407 flow. Second operand 16 states and 406 transitions. [2024-01-27 15:14:30,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 365 transitions, 2900 flow [2024-01-27 15:14:30,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 365 transitions, 2879 flow, removed 8 selfloop flow, removed 1 redundant places. [2024-01-27 15:14:30,770 INFO L231 Difference]: Finished difference. Result has 97 places, 156 transitions, 1624 flow [2024-01-27 15:14:30,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1624, PETRI_PLACES=97, PETRI_TRANSITIONS=156} [2024-01-27 15:14:30,770 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 58 predicate places. [2024-01-27 15:14:30,770 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 156 transitions, 1624 flow [2024-01-27 15:14:30,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.8125) internal successors, (205), 16 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:30,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:30,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:30,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:14:30,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:14:30,982 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:30,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:30,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1167549176, now seen corresponding path program 1 times [2024-01-27 15:14:30,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:30,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104472572] [2024-01-27 15:14:30,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:30,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:31,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104472572] [2024-01-27 15:14:31,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104472572] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:14:31,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757755652] [2024-01-27 15:14:31,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:31,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:14:31,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:14:31,342 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) [2024-01-27 15:14:31,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:14:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:31,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2024-01-27 15:14:31,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:14:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:32,557 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:14:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:37,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757755652] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:14:37,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:14:37,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-01-27 15:14:37,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750354823] [2024-01-27 15:14:37,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:14:37,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-01-27 15:14:37,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:14:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-01-27 15:14:37,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=136, Unknown=1, NotChecked=0, Total=182 [2024-01-27 15:14:37,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:14:37,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 156 transitions, 1624 flow. Second operand has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:37,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:14:37,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:14:37,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:14:41,133 INFO L124 PetriNetUnfolderBase]: 4283/5981 cut-off events. [2024-01-27 15:14:41,133 INFO L125 PetriNetUnfolderBase]: For 31459/31459 co-relation queries the response was YES. [2024-01-27 15:14:41,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34341 conditions, 5981 events. 4283/5981 cut-off events. For 31459/31459 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 29894 event pairs, 495 based on Foata normal form. 2/5973 useless extension candidates. Maximal degree in co-relation 31966. Up to 4940 conditions per place. [2024-01-27 15:14:41,172 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 244 selfloop transitions, 31 changer transitions 5/285 dead transitions. [2024-01-27 15:14:41,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 285 transitions, 2900 flow [2024-01-27 15:14:41,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:14:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:14:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 222 transitions. [2024-01-27 15:14:41,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7047619047619048 [2024-01-27 15:14:41,174 INFO L175 Difference]: Start difference. First operand has 97 places, 156 transitions, 1624 flow. Second operand 9 states and 222 transitions. [2024-01-27 15:14:41,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 285 transitions, 2900 flow [2024-01-27 15:14:41,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 285 transitions, 2643 flow, removed 126 selfloop flow, removed 1 redundant places. [2024-01-27 15:14:41,249 INFO L231 Difference]: Finished difference. Result has 109 places, 182 transitions, 1747 flow [2024-01-27 15:14:41,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1747, PETRI_PLACES=109, PETRI_TRANSITIONS=182} [2024-01-27 15:14:41,250 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 70 predicate places. [2024-01-27 15:14:41,250 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 182 transitions, 1747 flow [2024-01-27 15:14:41,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.642857142857142) internal successors, (191), 14 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:14:41,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:14:41,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:14:41,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 15:14:41,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:14:41,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:14:41,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:14:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash -789521586, now seen corresponding path program 2 times [2024-01-27 15:14:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:14:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166963448] [2024-01-27 15:14:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:14:41,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:14:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:14:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:14:41,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:14:41,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166963448] [2024-01-27 15:14:41,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166963448] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:14:41,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709684160] [2024-01-27 15:14:41,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:14:41,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:14:41,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:14:41,828 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) [2024-01-27 15:14:41,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 15:14:41,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:14:41,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:14:41,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 15:14:41,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:15:37,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:15:37,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:15:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:15:39,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709684160] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:15:39,091 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:15:39,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2024-01-27 15:15:39,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458556917] [2024-01-27 15:15:39,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:15:39,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-27 15:15:39,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:15:39,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-27 15:15:39,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=158, Unknown=3, NotChecked=0, Total=240 [2024-01-27 15:15:39,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:15:39,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 182 transitions, 1747 flow. Second operand has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:15:39,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:15:39,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:15:39,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:15:44,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:15:54,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:15:58,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:00,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:04,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:12,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:14,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:16,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:23,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:27,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:31,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:37,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:43,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:48,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:52,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:16:56,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 15:17:01,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:17:01,857 INFO L124 PetriNetUnfolderBase]: 5486/7645 cut-off events. [2024-01-27 15:17:01,857 INFO L125 PetriNetUnfolderBase]: For 39506/39506 co-relation queries the response was YES. [2024-01-27 15:17:01,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43036 conditions, 7645 events. 5486/7645 cut-off events. For 39506/39506 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 39320 event pairs, 515 based on Foata normal form. 39/7674 useless extension candidates. Maximal degree in co-relation 41919. Up to 5880 conditions per place. [2024-01-27 15:17:01,917 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 313 selfloop transitions, 107 changer transitions 35/460 dead transitions. [2024-01-27 15:17:01,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 460 transitions, 4664 flow [2024-01-27 15:17:01,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-27 15:17:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-27 15:17:01,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 375 transitions. [2024-01-27 15:17:01,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6696428571428571 [2024-01-27 15:17:01,919 INFO L175 Difference]: Start difference. First operand has 109 places, 182 transitions, 1747 flow. Second operand 16 states and 375 transitions. [2024-01-27 15:17:01,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 460 transitions, 4664 flow [2024-01-27 15:17:02,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 460 transitions, 4587 flow, removed 36 selfloop flow, removed 1 redundant places. [2024-01-27 15:17:02,012 INFO L231 Difference]: Finished difference. Result has 132 places, 279 transitions, 3176 flow [2024-01-27 15:17:02,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1674, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3176, PETRI_PLACES=132, PETRI_TRANSITIONS=279} [2024-01-27 15:17:02,013 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2024-01-27 15:17:02,013 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 279 transitions, 3176 flow [2024-01-27 15:17:02,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.0625) internal successors, (209), 16 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:17:02,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:17:02,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:17:02,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-27 15:17:02,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-01-27 15:17:02,225 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:17:02,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:17:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash 857164, now seen corresponding path program 2 times [2024-01-27 15:17:02,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:17:02,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972914004] [2024-01-27 15:17:02,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:17:02,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:17:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:17:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:17:02,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:17:02,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972914004] [2024-01-27 15:17:02,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972914004] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:17:02,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805379585] [2024-01-27 15:17:02,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:17:02,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:17:02,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:17:02,615 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) [2024-01-27 15:17:02,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-27 15:17:02,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:17:02,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:17:02,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2024-01-27 15:17:02,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:17:45,092 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:18:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:18:58,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:19:03,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:19:03,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805379585] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:19:03,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:19:03,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 16 [2024-01-27 15:19:03,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636908929] [2024-01-27 15:19:03,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:19:03,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-27 15:19:03,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:19:03,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-27 15:19:03,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=192, Unknown=6, NotChecked=0, Total=272 [2024-01-27 15:19:03,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-01-27 15:19:03,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 279 transitions, 3176 flow. Second operand has 17 states, 17 states have (on average 12.588235294117647) internal successors, (214), 17 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:19:03,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:19:03,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-01-27 15:19:03,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:19:09,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:19:50,662 WARN L293 SmtUtils]: Spent 27.99s on a formula simplification. DAG size of input: 60 DAG size of output: 48 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-27 15:20:01,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:05,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:08,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:13,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:17,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:21,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:26,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:30,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:34,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:35,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:39,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:43,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:48,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-27 15:20:50,294 INFO L124 PetriNetUnfolderBase]: 8812/12461 cut-off events. [2024-01-27 15:20:50,294 INFO L125 PetriNetUnfolderBase]: For 90838/90838 co-relation queries the response was YES. [2024-01-27 15:20:50,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76463 conditions, 12461 events. 8812/12461 cut-off events. For 90838/90838 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 70887 event pairs, 233 based on Foata normal form. 17/12474 useless extension candidates. Maximal degree in co-relation 75463. Up to 6264 conditions per place. [2024-01-27 15:20:50,429 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 475 selfloop transitions, 225 changer transitions 22/727 dead transitions. [2024-01-27 15:20:50,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 727 transitions, 8436 flow [2024-01-27 15:20:50,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-27 15:20:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-27 15:20:50,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 460 transitions. [2024-01-27 15:20:50,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7301587301587301 [2024-01-27 15:20:50,436 INFO L175 Difference]: Start difference. First operand has 132 places, 279 transitions, 3176 flow. Second operand 18 states and 460 transitions. [2024-01-27 15:20:50,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 727 transitions, 8436 flow [2024-01-27 15:20:50,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 727 transitions, 7771 flow, removed 329 selfloop flow, removed 1 redundant places. [2024-01-27 15:20:50,848 INFO L231 Difference]: Finished difference. Result has 156 places, 452 transitions, 5730 flow [2024-01-27 15:20:50,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2743, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5730, PETRI_PLACES=156, PETRI_TRANSITIONS=452} [2024-01-27 15:20:50,848 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 117 predicate places. [2024-01-27 15:20:50,849 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 452 transitions, 5730 flow [2024-01-27 15:20:50,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.588235294117647) internal successors, (214), 17 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:20:50,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:20:50,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:20:50,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-27 15:20:51,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:20:51,061 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-01-27 15:20:51,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:20:51,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1899816796, now seen corresponding path program 3 times [2024-01-27 15:20:51,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:20:51,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764842613] [2024-01-27 15:20:51,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:20:51,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:20:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:20:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:20:51,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:20:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764842613] [2024-01-27 15:20:51,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764842613] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:20:51,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038937074] [2024-01-27 15:20:51,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:20:51,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:20:51,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:20:51,237 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) [2024-01-27 15:20:51,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15