./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.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/popl20-min-max-inc.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 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:42:31,942 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:42:32,025 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:42:32,029 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:42:32,030 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:42:32,058 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:42:32,059 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:42:32,059 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:42:32,060 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:42:32,063 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:42:32,063 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:42:32,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:42:32,064 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:42:32,065 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:42:32,065 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:42:32,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:42:32,065 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:42:32,066 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:42:32,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:42:32,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:42:32,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:42:32,066 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:42:32,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:42:32,067 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:42:32,067 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:42:32,067 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:42:32,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:42:32,068 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:42:32,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:42:32,068 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:42:32,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:42:32,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:42:32,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:42:32,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:42:32,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:42:32,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:42:32,070 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:42:32,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:42:32,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:42:32,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:42:32,071 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:42:32,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:42:32,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:42:32,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55079ed406966de8cb8f01bd4828043af39842b101d9722a0d33cee3b1fc3a52 [2024-01-27 15:42:32,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:42:32,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:42:32,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:42:32,291 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:42:32,292 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:42:32,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2024-01-27 15:42:33,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:42:33,395 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:42:33,396 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c [2024-01-27 15:42:33,401 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5cc98c0e/8fc1ea6be2de4666996325e67d968f2b/FLAGc4891f062 [2024-01-27 15:42:33,412 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5cc98c0e/8fc1ea6be2de4666996325e67d968f2b [2024-01-27 15:42:33,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:42:33,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:42:33,418 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:42:33,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:42:33,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:42:33,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15327f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33, skipping insertion in model container [2024-01-27 15:42:33,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:42:33,590 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[3070,3083] [2024-01-27 15:42:33,596 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:42:33,607 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:42:33,622 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc.wvr.c[3070,3083] [2024-01-27 15:42:33,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:42:33,635 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:42:33,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33 WrapperNode [2024-01-27 15:42:33,636 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:42:33,637 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:42:33,637 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:42:33,637 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:42:33,641 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,663 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 141 [2024-01-27 15:42:33,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:42:33,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:42:33,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:42:33,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:42:33,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,678 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,693 INFO L175 MemorySlicer]: Split 20 memory accesses to 6 slices as follows [2, 2, 10, 2, 2, 2]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 2, 1, 1, 1]. [2024-01-27 15:42:33,693 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,693 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,700 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,702 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,704 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,707 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:42:33,708 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:42:33,708 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:42:33,708 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:42:33,709 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (1/1) ... [2024-01-27 15:42:33,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:42:33,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:42:33,732 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 15:42:33,734 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 15:42:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:42:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:42:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:42:33,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:42:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:42:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 15:42:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:42:33,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:42:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:42:33,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:42:33,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:42:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:42:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:42:33,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:42:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:42:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:42:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:42:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:42:33,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:42:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 15:42:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:42:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:42:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:42:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:42:33,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:42:33,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:42:33,769 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 15:42:33,860 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:42:33,862 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:42:34,068 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:42:34,068 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:42:34,270 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:42:34,270 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 15:42:34,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:42:34 BoogieIcfgContainer [2024-01-27 15:42:34,271 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:42:34,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:42:34,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:42:34,275 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:42:34,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:42:33" (1/3) ... [2024-01-27 15:42:34,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61266a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:42:34, skipping insertion in model container [2024-01-27 15:42:34,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:33" (2/3) ... [2024-01-27 15:42:34,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61266a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:42:34, skipping insertion in model container [2024-01-27 15:42:34,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:42:34" (3/3) ... [2024-01-27 15:42:34,277 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc.wvr.c [2024-01-27 15:42:34,283 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:42:34,290 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:42:34,290 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:42:34,290 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:42:34,352 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-01-27 15:42:34,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 49 transitions, 126 flow [2024-01-27 15:42:34,427 INFO L124 PetriNetUnfolderBase]: 4/45 cut-off events. [2024-01-27 15:42:34,428 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:42:34,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 45 events. 4/45 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 84 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2024-01-27 15:42:34,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 49 transitions, 126 flow [2024-01-27 15:42:34,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 44 transitions, 112 flow [2024-01-27 15:42:34,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:42:34,453 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;@59c8df21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:42:34,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-01-27 15:42:34,471 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:42:34,471 INFO L124 PetriNetUnfolderBase]: 4/43 cut-off events. [2024-01-27 15:42:34,472 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-01-27 15:42:34,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:34,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:34,473 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 15:42:34,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:34,477 INFO L85 PathProgramCache]: Analyzing trace with hash -2110549717, now seen corresponding path program 1 times [2024-01-27 15:42:34,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:34,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079910689] [2024-01-27 15:42:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:34,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:34,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:34,841 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 15:42:34,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:34,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079910689] [2024-01-27 15:42:34,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079910689] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:34,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:34,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:42:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847772048] [2024-01-27 15:42:34,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:34,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:42:34,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:34,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:42:34,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:42:34,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-01-27 15:42:34,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:42:34,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:34,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-01-27 15:42:34,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:35,397 INFO L124 PetriNetUnfolderBase]: 3542/5179 cut-off events. [2024-01-27 15:42:35,399 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-01-27 15:42:35,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 5179 events. 3542/5179 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 30730 event pairs, 1676 based on Foata normal form. 174/5137 useless extension candidates. Maximal degree in co-relation 9131. Up to 3161 conditions per place. [2024-01-27 15:42:35,432 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 47 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-01-27 15:42:35,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 257 flow [2024-01-27 15:42:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:42:35,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:42:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 115 transitions. [2024-01-27 15:42:35,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5867346938775511 [2024-01-27 15:42:35,444 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 112 flow. Second operand 4 states and 115 transitions. [2024-01-27 15:42:35,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 257 flow [2024-01-27 15:42:35,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 235 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:42:35,458 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 110 flow [2024-01-27 15:42:35,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=110, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-01-27 15:42:35,462 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -4 predicate places. [2024-01-27 15:42:35,463 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 110 flow [2024-01-27 15:42:35,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:42:35,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:35,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:35,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:42:35,464 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 15:42:35,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:35,465 INFO L85 PathProgramCache]: Analyzing trace with hash -2060181120, now seen corresponding path program 1 times [2024-01-27 15:42:35,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:35,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175080325] [2024-01-27 15:42:35,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:35,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:35,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175080325] [2024-01-27 15:42:35,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175080325] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:35,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:35,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:42:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816414334] [2024-01-27 15:42:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:35,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:42:35,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:42:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:42:35,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-27 15:42:35,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 15:42:35,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:35,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-27 15:42:35,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:36,096 INFO L124 PetriNetUnfolderBase]: 4551/6666 cut-off events. [2024-01-27 15:42:36,096 INFO L125 PetriNetUnfolderBase]: For 1168/1168 co-relation queries the response was YES. [2024-01-27 15:42:36,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14137 conditions, 6666 events. 4551/6666 cut-off events. For 1168/1168 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 39310 event pairs, 2562 based on Foata normal form. 192/6676 useless extension candidates. Maximal degree in co-relation 2151. Up to 4460 conditions per place. [2024-01-27 15:42:36,130 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 50 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2024-01-27 15:42:36,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 64 transitions, 267 flow [2024-01-27 15:42:36,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:42:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:42:36,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-27 15:42:36,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-27 15:42:36,133 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 110 flow. Second operand 4 states and 112 transitions. [2024-01-27 15:42:36,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 64 transitions, 267 flow [2024-01-27 15:42:36,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:42:36,136 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 120 flow [2024-01-27 15:42:36,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-01-27 15:42:36,137 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -2 predicate places. [2024-01-27 15:42:36,137 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 120 flow [2024-01-27 15:42:36,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 15:42:36,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:36,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:36,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:42:36,138 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 15:42:36,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:36,139 INFO L85 PathProgramCache]: Analyzing trace with hash 649085594, now seen corresponding path program 1 times [2024-01-27 15:42:36,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:36,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37193016] [2024-01-27 15:42:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:36,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:36,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:36,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37193016] [2024-01-27 15:42:36,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37193016] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:36,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:36,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:42:36,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227679682] [2024-01-27 15:42:36,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:36,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:42:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:36,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:42:36,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:42:36,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 49 [2024-01-27 15:42:36,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:42:36,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:36,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 49 [2024-01-27 15:42:36,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:36,709 INFO L124 PetriNetUnfolderBase]: 5176/7548 cut-off events. [2024-01-27 15:42:36,710 INFO L125 PetriNetUnfolderBase]: For 1544/1809 co-relation queries the response was YES. [2024-01-27 15:42:36,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17048 conditions, 7548 events. 5176/7548 cut-off events. For 1544/1809 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 44791 event pairs, 3063 based on Foata normal form. 517/7937 useless extension candidates. Maximal degree in co-relation 4322. Up to 5016 conditions per place. [2024-01-27 15:42:36,751 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 52 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2024-01-27 15:42:36,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 288 flow [2024-01-27 15:42:36,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:42:36,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:42:36,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-01-27 15:42:36,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-01-27 15:42:36,756 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 120 flow. Second operand 4 states and 112 transitions. [2024-01-27 15:42:36,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 288 flow [2024-01-27 15:42:36,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 66 transitions, 283 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:42:36,760 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 130 flow [2024-01-27 15:42:36,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-01-27 15:42:36,761 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 0 predicate places. [2024-01-27 15:42:36,761 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 130 flow [2024-01-27 15:42:36,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:42:36,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:36,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:42:36,762 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 15:42:36,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:36,763 INFO L85 PathProgramCache]: Analyzing trace with hash 625032986, now seen corresponding path program 1 times [2024-01-27 15:42:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:36,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644111828] [2024-01-27 15:42:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:36,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:36,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-01-27 15:42:36,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:36,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644111828] [2024-01-27 15:42:36,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644111828] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:36,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:36,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:42:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956599374] [2024-01-27 15:42:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:36,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:42:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:42:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:42:36,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-01-27 15:42:36,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 15:42:36,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:36,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-01-27 15:42:36,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:37,307 INFO L124 PetriNetUnfolderBase]: 4444/6470 cut-off events. [2024-01-27 15:42:37,308 INFO L125 PetriNetUnfolderBase]: For 1676/2144 co-relation queries the response was YES. [2024-01-27 15:42:37,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15415 conditions, 6470 events. 4444/6470 cut-off events. For 1676/2144 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 38202 event pairs, 3717 based on Foata normal form. 468/6823 useless extension candidates. Maximal degree in co-relation 4297. Up to 6001 conditions per place. [2024-01-27 15:42:37,341 INFO L140 encePairwiseOnDemand]: 46/49 looper letters, 34 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-01-27 15:42:37,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 204 flow [2024-01-27 15:42:37,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:42:37,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:42:37,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-01-27 15:42:37,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578231292517006 [2024-01-27 15:42:37,343 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 130 flow. Second operand 3 states and 82 transitions. [2024-01-27 15:42:37,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 204 flow [2024-01-27 15:42:37,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 48 transitions, 200 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:42:37,347 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 138 flow [2024-01-27 15:42:37,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-01-27 15:42:37,348 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 1 predicate places. [2024-01-27 15:42:37,348 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 138 flow [2024-01-27 15:42:37,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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 15:42:37,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:37,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:37,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:42:37,349 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 15:42:37,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1092804233, now seen corresponding path program 1 times [2024-01-27 15:42:37,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:37,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892030276] [2024-01-27 15:42:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:37,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:37,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892030276] [2024-01-27 15:42:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892030276] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:42:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998392822] [2024-01-27 15:42:37,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:37,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:42:37,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:42:37,785 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 15:42:37,786 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 15:42:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:37,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-27 15:42:37,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:42:37,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-01-27 15:42:38,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-01-27 15:42:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:42:38,231 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:42:38,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:38,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998392822] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:42:38,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:42:38,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 22 [2024-01-27 15:42:38,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400132131] [2024-01-27 15:42:38,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:42:38,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-27 15:42:38,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:38,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-27 15:42:38,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-01-27 15:42:38,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-01-27 15:42:38,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 138 flow. Second operand has 22 states, 22 states have (on average 17.59090909090909) internal successors, (387), 22 states have internal predecessors, (387), 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 15:42:38,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:38,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-01-27 15:42:38,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:44,201 INFO L124 PetriNetUnfolderBase]: 55258/79582 cut-off events. [2024-01-27 15:42:44,202 INFO L125 PetriNetUnfolderBase]: For 25199/25199 co-relation queries the response was YES. [2024-01-27 15:42:44,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188132 conditions, 79582 events. 55258/79582 cut-off events. For 25199/25199 co-relation queries the response was YES. Maximal size of possible extension queue 3052. Compared 580189 event pairs, 739 based on Foata normal form. 8/79583 useless extension candidates. Maximal degree in co-relation 188118. Up to 10159 conditions per place. [2024-01-27 15:42:44,535 INFO L140 encePairwiseOnDemand]: 35/49 looper letters, 320 selfloop transitions, 53 changer transitions 368/750 dead transitions. [2024-01-27 15:42:44,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 750 transitions, 3720 flow [2024-01-27 15:42:44,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-01-27 15:42:44,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-01-27 15:42:44,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1233 transitions. [2024-01-27 15:42:44,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5991253644314869 [2024-01-27 15:42:44,539 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 138 flow. Second operand 42 states and 1233 transitions. [2024-01-27 15:42:44,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 750 transitions, 3720 flow [2024-01-27 15:42:44,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 750 transitions, 3716 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-27 15:42:44,925 INFO L231 Difference]: Finished difference. Result has 124 places, 112 transitions, 655 flow [2024-01-27 15:42:44,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=655, PETRI_PLACES=124, PETRI_TRANSITIONS=112} [2024-01-27 15:42:44,926 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 71 predicate places. [2024-01-27 15:42:44,926 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 112 transitions, 655 flow [2024-01-27 15:42:44,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 17.59090909090909) internal successors, (387), 22 states have internal predecessors, (387), 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 15:42:44,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:44,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:45,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-01-27 15:42:45,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:42:45,138 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 15:42:45,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash 171510171, now seen corresponding path program 2 times [2024-01-27 15:42:45,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:45,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949242900] [2024-01-27 15:42:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:45,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 15:42:45,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:45,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949242900] [2024-01-27 15:42:45,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949242900] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:45,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:45,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:42:45,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497546322] [2024-01-27 15:42:45,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:45,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:42:45,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:42:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:42:45,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-01-27 15:42:45,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 112 transitions, 655 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:42:45,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:45,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-01-27 15:42:45,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:51,039 INFO L124 PetriNetUnfolderBase]: 44377/65349 cut-off events. [2024-01-27 15:42:51,039 INFO L125 PetriNetUnfolderBase]: For 756488/758414 co-relation queries the response was YES. [2024-01-27 15:42:51,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287993 conditions, 65349 events. 44377/65349 cut-off events. For 756488/758414 co-relation queries the response was YES. Maximal size of possible extension queue 2549. Compared 489617 event pairs, 8921 based on Foata normal form. 960/65963 useless extension candidates. Maximal degree in co-relation 287942. Up to 31933 conditions per place. [2024-01-27 15:42:51,739 INFO L140 encePairwiseOnDemand]: 45/49 looper letters, 99 selfloop transitions, 4 changer transitions 120/241 dead transitions. [2024-01-27 15:42:51,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 241 transitions, 1835 flow [2024-01-27 15:42:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:42:51,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:42:51,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-01-27 15:42:51,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-01-27 15:42:51,741 INFO L175 Difference]: Start difference. First operand has 124 places, 112 transitions, 655 flow. Second operand 5 states and 155 transitions. [2024-01-27 15:42:51,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 241 transitions, 1835 flow [2024-01-27 15:42:57,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 241 transitions, 1740 flow, removed 46 selfloop flow, removed 15 redundant places. [2024-01-27 15:42:57,009 INFO L231 Difference]: Finished difference. Result has 96 places, 79 transitions, 430 flow [2024-01-27 15:42:57,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=96, PETRI_TRANSITIONS=79} [2024-01-27 15:42:57,010 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 43 predicate places. [2024-01-27 15:42:57,010 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 79 transitions, 430 flow [2024-01-27 15:42:57,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:42:57,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:57,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:57,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:42:57,011 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 15:42:57,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:57,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1757269001, now seen corresponding path program 3 times [2024-01-27 15:42:57,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:57,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525298914] [2024-01-27 15:42:57,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:57,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:57,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:57,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:57,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525298914] [2024-01-27 15:42:57,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525298914] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:42:57,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880243199] [2024-01-27 15:42:57,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:42:57,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:42:57,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:42:57,228 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 15:42:57,229 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 15:42:57,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-27 15:42:57,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:42:57,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 18 conjunts are in the unsatisfiable core [2024-01-27 15:42:57,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:42:57,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-01-27 15:42:57,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2024-01-27 15:42:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:57,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:42:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880243199] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:42:57,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:42:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 19 [2024-01-27 15:42:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529629297] [2024-01-27 15:42:57,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:42:57,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-27 15:42:57,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:57,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-27 15:42:57,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2024-01-27 15:42:57,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-01-27 15:42:57,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 79 transitions, 430 flow. Second operand has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 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 15:42:57,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:57,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-01-27 15:42:57,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:43:14,272 INFO L124 PetriNetUnfolderBase]: 126678/183088 cut-off events. [2024-01-27 15:43:14,273 INFO L125 PetriNetUnfolderBase]: For 1098838/1099820 co-relation queries the response was YES. [2024-01-27 15:43:15,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716102 conditions, 183088 events. 126678/183088 cut-off events. For 1098838/1099820 co-relation queries the response was YES. Maximal size of possible extension queue 7120. Compared 1486727 event pairs, 9962 based on Foata normal form. 892/183446 useless extension candidates. Maximal degree in co-relation 716062. Up to 28023 conditions per place. [2024-01-27 15:43:15,644 INFO L140 encePairwiseOnDemand]: 36/49 looper letters, 429 selfloop transitions, 158 changer transitions 553/1153 dead transitions. [2024-01-27 15:43:15,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1153 transitions, 9763 flow [2024-01-27 15:43:15,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-01-27 15:43:15,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2024-01-27 15:43:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 1706 transitions. [2024-01-27 15:43:15,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526401036605119 [2024-01-27 15:43:15,658 INFO L175 Difference]: Start difference. First operand has 96 places, 79 transitions, 430 flow. Second operand 63 states and 1706 transitions. [2024-01-27 15:43:15,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 1153 transitions, 9763 flow [2024-01-27 15:43:23,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 1153 transitions, 8253 flow, removed 754 selfloop flow, removed 7 redundant places. [2024-01-27 15:43:23,708 INFO L231 Difference]: Finished difference. Result has 191 places, 250 transitions, 2276 flow [2024-01-27 15:43:23,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=2276, PETRI_PLACES=191, PETRI_TRANSITIONS=250} [2024-01-27 15:43:23,709 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 138 predicate places. [2024-01-27 15:43:23,709 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 250 transitions, 2276 flow [2024-01-27 15:43:23,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 18.526315789473685) internal successors, (352), 19 states have internal predecessors, (352), 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 15:43:23,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:43:23,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:43:23,720 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 15:43:23,920 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,SelfDestructingSolverStorable6 [2024-01-27 15:43:23,921 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 15:43:23,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:43:23,921 INFO L85 PathProgramCache]: Analyzing trace with hash 929477939, now seen corresponding path program 4 times [2024-01-27 15:43:23,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:43:23,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650820247] [2024-01-27 15:43:23,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:43:23,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:43:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:43:24,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-01-27 15:43:24,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:43:24,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650820247] [2024-01-27 15:43:24,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650820247] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:43:24,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:43:24,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:43:24,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911528562] [2024-01-27 15:43:24,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:43:24,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:43:24,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:43:24,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:43:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:43:24,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 49 [2024-01-27 15:43:24,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 250 transitions, 2276 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:43:24,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:43:24,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 49 [2024-01-27 15:43:24,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand