./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.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-dec.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 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:42:26,031 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:42:26,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:42:26,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:42:26,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:42:26,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:42:26,127 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:42:26,127 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:42:26,127 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:42:26,130 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:42:26,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:42:26,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:42:26,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:42:26,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:42:26,133 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:42:26,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:42:26,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:42:26,133 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:42:26,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:42:26,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:42:26,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:42:26,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:42:26,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:42:26,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:42:26,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:42:26,135 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:42:26,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:42:26,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:42:26,136 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:42:26,136 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:42:26,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:42:26,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:42:26,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:42:26,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:42:26,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:42:26,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:42:26,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:42:26,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:42:26,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:42:26,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:42:26,139 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:42:26,140 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:42:26,140 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:42:26,140 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47fde0ba5912e0415b0c299af0f3ae7b3e6a5b956bf726bb77299079d74126b4 [2024-01-27 15:42:26,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:42:26,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:42:26,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:42:26,365 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:42:26,366 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:42:26,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2024-01-27 15:42:27,306 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:42:27,473 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:42:27,473 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2024-01-27 15:42:27,479 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a961d15b/42f89aaf9d7d462db388f003dec3d6cb/FLAG91aef904e [2024-01-27 15:42:27,488 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a961d15b/42f89aaf9d7d462db388f003dec3d6cb [2024-01-27 15:42:27,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:42:27,491 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:42:27,495 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:42:27,495 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:42:27,500 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:42:27,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fbf5280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27, skipping insertion in model container [2024-01-27 15:42:27,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,522 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:42:27,686 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-dec.wvr.c[3336,3349] [2024-01-27 15:42:27,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:42:27,699 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:42:27,716 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-dec.wvr.c[3336,3349] [2024-01-27 15:42:27,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:42:27,730 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:42:27,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27 WrapperNode [2024-01-27 15:42:27,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:42:27,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:42:27,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:42:27,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:42:27,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,772 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 180 [2024-01-27 15:42:27,774 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:42:27,775 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:42:27,775 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:42:27,775 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:42:27,783 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,787 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,801 INFO L175 MemorySlicer]: Split 25 memory accesses to 7 slices as follows [2, 2, 2, 2, 13, 2, 2]. 52 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 8 writes are split as follows [0, 1, 1, 1, 3, 1, 1]. [2024-01-27 15:42:27,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,822 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,825 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,827 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,828 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:42:27,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:42:27,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:42:27,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:42:27,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (1/1) ... [2024-01-27 15:42:27,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:42:27,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:42:27,861 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 15:42:27,884 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 15:42:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:42:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:42:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:42:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:42:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:42:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:42:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:42:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 15:42:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-27 15:42:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:42:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:42:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:42:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:42:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:42:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 15:42:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-27 15:42:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:42:27,909 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:42:27,909 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:42:27,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:42:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:42:27,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:42:27,910 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:42:27,910 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:42:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:42:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:42:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:42:27,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:42:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:42:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 15:42:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-27 15:42:27,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-27 15:42:27,913 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-27 15:42:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:42:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:42:27,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:42:27,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:42:27,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:42:27,915 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 15:42:28,054 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:42:28,056 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:42:28,304 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:42:28,304 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:42:28,487 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:42:28,487 INFO L320 CfgBuilder]: Removed 5 assume(true) statements. [2024-01-27 15:42:28,487 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:42:28 BoogieIcfgContainer [2024-01-27 15:42:28,487 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:42:28,489 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:42:28,489 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:42:28,491 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:42:28,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:42:27" (1/3) ... [2024-01-27 15:42:28,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5658fe8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:42:28, skipping insertion in model container [2024-01-27 15:42:28,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:42:27" (2/3) ... [2024-01-27 15:42:28,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5658fe8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:42:28, skipping insertion in model container [2024-01-27 15:42:28,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:42:28" (3/3) ... [2024-01-27 15:42:28,496 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2024-01-27 15:42:28,503 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:42:28,511 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:42:28,512 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:42:28,512 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:42:28,633 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2024-01-27 15:42:28,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 59 transitions, 153 flow [2024-01-27 15:42:28,714 INFO L124 PetriNetUnfolderBase]: 5/54 cut-off events. [2024-01-27 15:42:28,715 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-27 15:42:28,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 54 events. 5/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 0 based on Foata normal form. 0/48 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2024-01-27 15:42:28,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 59 transitions, 153 flow [2024-01-27 15:42:28,722 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 53 transitions, 136 flow [2024-01-27 15:42:28,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:42:28,742 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;@6004e117, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:42:28,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-01-27 15:42:28,763 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:42:28,763 INFO L124 PetriNetUnfolderBase]: 5/52 cut-off events. [2024-01-27 15:42:28,763 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-01-27 15:42:28,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:28,764 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 15:42:28,765 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 3 more)] === [2024-01-27 15:42:28,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:28,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2128190068, now seen corresponding path program 1 times [2024-01-27 15:42:28,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:28,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963491277] [2024-01-27 15:42:28,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:28,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:28,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:29,127 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 15:42:29,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:29,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963491277] [2024-01-27 15:42:29,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963491277] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:29,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:29,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:42:29,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877689374] [2024-01-27 15:42:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:29,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:42:29,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:29,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:42:29,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:42:29,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-01-27 15:42:29,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 53 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 15:42:29,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:29,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-01-27 15:42:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:31,221 INFO L124 PetriNetUnfolderBase]: 19022/25535 cut-off events. [2024-01-27 15:42:31,222 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2024-01-27 15:42:31,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50980 conditions, 25535 events. 19022/25535 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 156168 event pairs, 9036 based on Foata normal form. 746/25689 useless extension candidates. Maximal degree in co-relation 45287. Up to 15793 conditions per place. [2024-01-27 15:42:31,413 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 61 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2024-01-27 15:42:31,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 77 transitions, 324 flow [2024-01-27 15:42:31,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:42:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:42:31,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-27 15:42:31,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805084745762712 [2024-01-27 15:42:31,426 INFO L175 Difference]: Start difference. First operand has 64 places, 53 transitions, 136 flow. Second operand 4 states and 137 transitions. [2024-01-27 15:42:31,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 77 transitions, 324 flow [2024-01-27 15:42:31,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 77 transitions, 296 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-01-27 15:42:31,486 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 130 flow [2024-01-27 15:42:31,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2024-01-27 15:42:31,490 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -6 predicate places. [2024-01-27 15:42:31,491 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 130 flow [2024-01-27 15:42:31,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 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 15:42:31,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:31,492 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 15:42:31,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:42:31,492 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 3 more)] === [2024-01-27 15:42:31,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash -276973944, now seen corresponding path program 1 times [2024-01-27 15:42:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:31,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640303152] [2024-01-27 15:42:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:31,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:31,656 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 15:42:31,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640303152] [2024-01-27 15:42:31,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640303152] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:31,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:31,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:42:31,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858987654] [2024-01-27 15:42:31,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:31,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:42:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:31,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:42:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:42:31,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-01-27 15:42:31,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 130 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 15:42:31,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:31,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-01-27 15:42:31,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:33,663 INFO L124 PetriNetUnfolderBase]: 24711/33202 cut-off events. [2024-01-27 15:42:33,666 INFO L125 PetriNetUnfolderBase]: For 5476/5476 co-relation queries the response was YES. [2024-01-27 15:42:33,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70181 conditions, 33202 events. 24711/33202 cut-off events. For 5476/5476 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 201262 event pairs, 13878 based on Foata normal form. 792/33320 useless extension candidates. Maximal degree in co-relation 9315. Up to 22788 conditions per place. [2024-01-27 15:42:33,839 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 64 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2024-01-27 15:42:33,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 328 flow [2024-01-27 15:42:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:42:33,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:42:33,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-01-27 15:42:33,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2024-01-27 15:42:33,845 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 130 flow. Second operand 4 states and 134 transitions. [2024-01-27 15:42:33,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 328 flow [2024-01-27 15:42:33,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 79 transitions, 322 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:42:33,859 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 140 flow [2024-01-27 15:42:33,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-01-27 15:42:33,860 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -4 predicate places. [2024-01-27 15:42:33,860 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 140 flow [2024-01-27 15:42:33,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 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 15:42:33,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:33,861 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, 1, 1] [2024-01-27 15:42:33,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:42:33,861 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 3 more)] === [2024-01-27 15:42:33,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:33,862 INFO L85 PathProgramCache]: Analyzing trace with hash 708818271, now seen corresponding path program 1 times [2024-01-27 15:42:33,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:33,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132885326] [2024-01-27 15:42:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:33,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:33,949 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 15:42:33,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132885326] [2024-01-27 15:42:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132885326] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:33,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:33,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:42:33,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578901614] [2024-01-27 15:42:33,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:33,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:42:33,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:33,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:42:33,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:42:33,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 59 [2024-01-27 15:42:33,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 15:42:33,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:33,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 59 [2024-01-27 15:42:33,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:36,254 INFO L124 PetriNetUnfolderBase]: 28504/38008 cut-off events. [2024-01-27 15:42:36,255 INFO L125 PetriNetUnfolderBase]: For 7412/8517 co-relation queries the response was YES. [2024-01-27 15:42:36,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84580 conditions, 38008 events. 28504/38008 cut-off events. For 7412/8517 co-relation queries the response was YES. Maximal size of possible extension queue 1333. Compared 226838 event pairs, 16499 based on Foata normal form. 2149/39399 useless extension candidates. Maximal degree in co-relation 22074. Up to 25792 conditions per place. [2024-01-27 15:42:36,467 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 66 selfloop transitions, 3 changer transitions 0/81 dead transitions. [2024-01-27 15:42:36,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 81 transitions, 349 flow [2024-01-27 15:42:36,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:42:36,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:42:36,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-01-27 15:42:36,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5677966101694916 [2024-01-27 15:42:36,469 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 140 flow. Second operand 4 states and 134 transitions. [2024-01-27 15:42:36,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 81 transitions, 349 flow [2024-01-27 15:42:36,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 81 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:42:36,474 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 150 flow [2024-01-27 15:42:36,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2024-01-27 15:42:36,475 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2024-01-27 15:42:36,475 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 150 flow [2024-01-27 15:42:36,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 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 15:42:36,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:36,476 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, 1, 1, 1, 1, 1] [2024-01-27 15:42:36,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:42:36,476 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 3 more)] === [2024-01-27 15:42:36,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash 939392660, now seen corresponding path program 1 times [2024-01-27 15:42:36,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:36,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101619203] [2024-01-27 15:42:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:36,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:42:36,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:36,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101619203] [2024-01-27 15:42:36,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101619203] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:36,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:36,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:42:36,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151102581] [2024-01-27 15:42:36,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:36,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:42:36,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:36,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:42:36,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:42:36,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-01-27 15:42:36,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 15:42:36,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:36,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-01-27 15:42:36,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:39,341 INFO L124 PetriNetUnfolderBase]: 35980/48134 cut-off events. [2024-01-27 15:42:39,341 INFO L125 PetriNetUnfolderBase]: For 13160/16052 co-relation queries the response was YES. [2024-01-27 15:42:39,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111398 conditions, 48134 events. 35980/48134 cut-off events. For 13160/16052 co-relation queries the response was YES. Maximal size of possible extension queue 1752. Compared 307896 event pairs, 19961 based on Foata normal form. 4360/51869 useless extension candidates. Maximal degree in co-relation 31637. Up to 30868 conditions per place. [2024-01-27 15:42:39,563 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 67 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2024-01-27 15:42:39,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 83 transitions, 369 flow [2024-01-27 15:42:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:42:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:42:39,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-01-27 15:42:39,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805084745762712 [2024-01-27 15:42:39,565 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 150 flow. Second operand 4 states and 137 transitions. [2024-01-27 15:42:39,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 83 transitions, 369 flow [2024-01-27 15:42:39,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 364 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:42:39,572 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 160 flow [2024-01-27 15:42:39,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-01-27 15:42:39,573 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 0 predicate places. [2024-01-27 15:42:39,574 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 160 flow [2024-01-27 15:42:39,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 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 15:42:39,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:39,574 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:39,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:42:39,574 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 3 more)] === [2024-01-27 15:42:39,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1875594045, now seen corresponding path program 1 times [2024-01-27 15:42:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:39,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429550137] [2024-01-27 15:42:39,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:39,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:39,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:39,738 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 15:42:39,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:39,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429550137] [2024-01-27 15:42:39,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429550137] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:42:39,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:42:39,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-27 15:42:39,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127942918] [2024-01-27 15:42:39,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:42:39,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:42:39,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:39,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:42:39,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:42:39,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 59 [2024-01-27 15:42:39,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 15:42:39,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:39,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 59 [2024-01-27 15:42:39,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:42:42,573 INFO L124 PetriNetUnfolderBase]: 35980/47774 cut-off events. [2024-01-27 15:42:42,573 INFO L125 PetriNetUnfolderBase]: For 19669/22561 co-relation queries the response was YES. [2024-01-27 15:42:42,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116856 conditions, 47774 events. 35980/47774 cut-off events. For 19669/22561 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 296904 event pairs, 30069 based on Foata normal form. 2892/50116 useless extension candidates. Maximal degree in co-relation 34009. Up to 45313 conditions per place. [2024-01-27 15:42:42,785 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 43 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-01-27 15:42:42,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 252 flow [2024-01-27 15:42:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:42:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:42:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-01-27 15:42:42,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5423728813559322 [2024-01-27 15:42:42,787 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 160 flow. Second operand 3 states and 96 transitions. [2024-01-27 15:42:42,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 252 flow [2024-01-27 15:42:42,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:42:42,805 INFO L231 Difference]: Finished difference. Result has 65 places, 58 transitions, 168 flow [2024-01-27 15:42:42,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=65, PETRI_TRANSITIONS=58} [2024-01-27 15:42:42,806 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 1 predicate places. [2024-01-27 15:42:42,806 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 58 transitions, 168 flow [2024-01-27 15:42:42,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 15:42:42,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:42:42,806 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:42:42,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:42:42,807 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 3 more)] === [2024-01-27 15:42:42,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:42:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1478200091, now seen corresponding path program 1 times [2024-01-27 15:42:42,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:42:42,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921087933] [2024-01-27 15:42:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:42,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:42:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:43,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:43,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:42:43,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921087933] [2024-01-27 15:42:43,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921087933] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:42:43,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156366306] [2024-01-27 15:42:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:42:43,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:42:43,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:42:43,411 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 15:42:43,412 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 15:42:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:42:43,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 28 conjunts are in the unsatisfiable core [2024-01-27 15:42:43,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:42:43,621 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 15:42:43,759 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 15:42:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:42:43,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:42:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:42:44,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156366306] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:42:44,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:42:44,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 8] total 22 [2024-01-27 15:42:44,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124967018] [2024-01-27 15:42:44,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:42:44,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-01-27 15:42:44,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:42:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-01-27 15:42:44,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2024-01-27 15:42:44,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 59 [2024-01-27 15:42:44,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 58 transitions, 168 flow. Second operand has 22 states, 22 states have (on average 20.681818181818183) internal successors, (455), 22 states have internal predecessors, (455), 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 15:42:44,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:42:44,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 59 [2024-01-27 15:42:44,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand