./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-barrier.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/parallel-barrier.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 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:30:54,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:30:54,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:30:54,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:30:54,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:30:54,943 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:30:54,943 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:30:54,944 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:30:54,944 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:30:54,944 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:30:54,945 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:30:54,945 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:30:54,946 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:30:54,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:30:54,946 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:30:54,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:30:54,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:30:54,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:30:54,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:30:54,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:30:54,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:30:54,949 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:30:54,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:30:54,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:30:54,950 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:30:54,950 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:30:54,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:30:54,951 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:30:54,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:30:54,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:30:54,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:30:54,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:30:54,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:30:54,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:30:54,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:30:54,953 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:30:54,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:30:54,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:30:54,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:30:54,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:30:54,955 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:30:54,956 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:30:54,957 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:30:54,957 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 504de2e820c504d0b98f5b71c19407f1b43c0dd9338639fad4f2fe6ea2f6854f [2024-01-27 15:30:55,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:30:55,257 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:30:55,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:30:55,260 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:30:55,261 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:30:55,262 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-01-27 15:30:56,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:30:56,636 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:30:56,648 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-barrier.wvr.c [2024-01-27 15:30:56,657 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e6f61c2a/86cd6b98437440a888b23c26328a9f4b/FLAGb87a2e4e6 [2024-01-27 15:30:56,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e6f61c2a/86cd6b98437440a888b23c26328a9f4b [2024-01-27 15:30:56,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:30:56,677 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:30:56,678 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:30:56,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:30:56,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:30:56,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:30:56" (1/1) ... [2024-01-27 15:30:56,687 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5528e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:56, skipping insertion in model container [2024-01-27 15:30:56,687 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:30:56" (1/1) ... [2024-01-27 15:30:56,722 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:30:56,934 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/parallel-barrier.wvr.c[4800,4813] [2024-01-27 15:30:56,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:30:56,953 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:30:56,991 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/parallel-barrier.wvr.c[4800,4813] [2024-01-27 15:30:56,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:30:57,015 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:30:57,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57 WrapperNode [2024-01-27 15:30:57,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:30:57,017 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:30:57,017 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:30:57,017 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:30:57,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,039 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,069 INFO L138 Inliner]: procedures = 25, calls = 98, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 270 [2024-01-27 15:30:57,074 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:30:57,075 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:30:57,075 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:30:57,075 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:30:57,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,118 INFO L175 MemorySlicer]: Split 14 memory accesses to 7 slices as follows [2, 2, 2, 2, 2, 2, 2]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 6 writes are split as follows [0, 1, 1, 1, 1, 1, 1]. [2024-01-27 15:30:57,118 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,124 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,131 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,144 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,166 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,169 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:30:57,170 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:30:57,170 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:30:57,170 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:30:57,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (1/1) ... [2024-01-27 15:30:57,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:30:57,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:57,209 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 15:30:57,232 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 15:30:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:30:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:30:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:30:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:30:57,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:30:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:30:57,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-01-27 15:30:57,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-01-27 15:30:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-01-27 15:30:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:30:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:30:57,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:30:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:30:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-01-27 15:30:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-01-27 15:30:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-01-27 15:30:57,264 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:30:57,264 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:30:57,265 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:30:57,265 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:30:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:30:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:30:57,266 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-01-27 15:30:57,266 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-01-27 15:30:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:30:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:30:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:30:57,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:30:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-01-27 15:30:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-01-27 15:30:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-01-27 15:30:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2024-01-27 15:30:57,268 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2024-01-27 15:30:57,268 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2024-01-27 15:30:57,269 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2024-01-27 15:30:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:30:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:30:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:30:57,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:30:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:30:57,271 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 15:30:57,436 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:30:57,438 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:30:57,727 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:30:57,727 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:30:57,977 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:30:57,979 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:30:57,980 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:30:57 BoogieIcfgContainer [2024-01-27 15:30:57,980 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:30:57,982 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:30:57,985 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:30:57,989 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:30:57,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:30:56" (1/3) ... [2024-01-27 15:30:57,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d2f861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:30:57, skipping insertion in model container [2024-01-27 15:30:57,997 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:30:57" (2/3) ... [2024-01-27 15:30:57,997 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d2f861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:30:57, skipping insertion in model container [2024-01-27 15:30:57,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:30:57" (3/3) ... [2024-01-27 15:30:58,003 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-barrier.wvr.c [2024-01-27 15:30:58,011 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:30:58,019 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:30:58,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:30:58,020 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:30:58,140 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2024-01-27 15:30:58,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 79 transitions, 224 flow [2024-01-27 15:30:58,239 INFO L124 PetriNetUnfolderBase]: 4/65 cut-off events. [2024-01-27 15:30:58,239 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:30:58,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 65 events. 4/65 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 150 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 75. Up to 3 conditions per place. [2024-01-27 15:30:58,244 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 79 transitions, 224 flow [2024-01-27 15:30:58,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 64 transitions, 176 flow [2024-01-27 15:30:58,261 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:30:58,266 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;@53f40ac5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:30:58,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2024-01-27 15:30:58,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:30:58,299 INFO L124 PetriNetUnfolderBase]: 4/63 cut-off events. [2024-01-27 15:30:58,299 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-01-27 15:30:58,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:58,300 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:58,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:30:58,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:58,305 INFO L85 PathProgramCache]: Analyzing trace with hash 240787083, now seen corresponding path program 1 times [2024-01-27 15:30:58,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:58,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473188420] [2024-01-27 15:30:58,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:58,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:58,776 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 15:30:58,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:58,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473188420] [2024-01-27 15:30:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473188420] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:58,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:58,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:30:58,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385825435] [2024-01-27 15:30:58,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:58,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:30:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:58,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:30:58,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:30:58,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-01-27 15:30:58,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 64 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:30:58,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:58,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-01-27 15:30:58,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:00,448 INFO L124 PetriNetUnfolderBase]: 8227/12717 cut-off events. [2024-01-27 15:31:00,449 INFO L125 PetriNetUnfolderBase]: For 1709/1709 co-relation queries the response was YES. [2024-01-27 15:31:00,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26300 conditions, 12717 events. 8227/12717 cut-off events. For 1709/1709 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 88392 event pairs, 5835 based on Foata normal form. 70/11383 useless extension candidates. Maximal degree in co-relation 25768. Up to 9819 conditions per place. [2024-01-27 15:31:00,551 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 59 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2024-01-27 15:31:00,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 364 flow [2024-01-27 15:31:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-01-27 15:31:00,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104417670682731 [2024-01-27 15:31:00,565 INFO L175 Difference]: Start difference. First operand has 79 places, 64 transitions, 176 flow. Second operand 3 states and 152 transitions. [2024-01-27 15:31:00,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 364 flow [2024-01-27 15:31:00,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 85 transitions, 316 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-27 15:31:00,621 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 152 flow [2024-01-27 15:31:00,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-01-27 15:31:00,625 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -9 predicate places. [2024-01-27 15:31:00,626 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 152 flow [2024-01-27 15:31:00,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:31:00,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:00,626 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:00,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:31:00,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:31:00,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:00,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1691575991, now seen corresponding path program 2 times [2024-01-27 15:31:00,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:00,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915851698] [2024-01-27 15:31:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:00,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:00,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:00,918 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 15:31:00,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:00,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915851698] [2024-01-27 15:31:00,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915851698] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:00,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:00,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:00,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170180200] [2024-01-27 15:31:00,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:00,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:31:00,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:00,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:31:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:31:00,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-01-27 15:31:00,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:31:00,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:00,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-01-27 15:31:00,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:01,866 INFO L124 PetriNetUnfolderBase]: 6859/10669 cut-off events. [2024-01-27 15:31:01,867 INFO L125 PetriNetUnfolderBase]: For 1090/1090 co-relation queries the response was YES. [2024-01-27 15:31:01,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20886 conditions, 10669 events. 6859/10669 cut-off events. For 1090/1090 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 71816 event pairs, 4935 based on Foata normal form. 70/9663 useless extension candidates. Maximal degree in co-relation 5289. Up to 8031 conditions per place. [2024-01-27 15:31:02,036 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-01-27 15:31:02,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 320 flow [2024-01-27 15:31:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:02,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-01-27 15:31:02,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2024-01-27 15:31:02,046 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 152 flow. Second operand 3 states and 150 transitions. [2024-01-27 15:31:02,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 320 flow [2024-01-27 15:31:02,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 83 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:31:02,050 INFO L231 Difference]: Finished difference. Result has 71 places, 64 transitions, 156 flow [2024-01-27 15:31:02,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=71, PETRI_TRANSITIONS=64} [2024-01-27 15:31:02,051 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -8 predicate places. [2024-01-27 15:31:02,051 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 64 transitions, 156 flow [2024-01-27 15:31:02,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:31:02,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:02,052 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:02,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:31:02,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:31:02,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1698695916, now seen corresponding path program 1 times [2024-01-27 15:31:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:02,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454520050] [2024-01-27 15:31:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:02,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:02,268 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 15:31:02,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:02,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454520050] [2024-01-27 15:31:02,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454520050] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:02,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:02,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899516901] [2024-01-27 15:31:02,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:02,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:31:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:02,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:31:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:31:02,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-01-27 15:31:02,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 64 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:31:02,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:02,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-01-27 15:31:02,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:03,098 INFO L124 PetriNetUnfolderBase]: 6011/9333 cut-off events. [2024-01-27 15:31:03,098 INFO L125 PetriNetUnfolderBase]: For 1414/1414 co-relation queries the response was YES. [2024-01-27 15:31:03,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18719 conditions, 9333 events. 6011/9333 cut-off events. For 1414/1414 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 59312 event pairs, 4291 based on Foata normal form. 62/8573 useless extension candidates. Maximal degree in co-relation 7506. Up to 7059 conditions per place. [2024-01-27 15:31:03,150 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 57 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2024-01-27 15:31:03,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 324 flow [2024-01-27 15:31:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:03,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2024-01-27 15:31:03,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2024-01-27 15:31:03,153 INFO L175 Difference]: Start difference. First operand has 71 places, 64 transitions, 156 flow. Second operand 3 states and 150 transitions. [2024-01-27 15:31:03,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 324 flow [2024-01-27 15:31:03,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 83 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:31:03,156 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 160 flow [2024-01-27 15:31:03,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2024-01-27 15:31:03,158 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, -7 predicate places. [2024-01-27 15:31:03,158 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 160 flow [2024-01-27 15:31:03,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:31:03,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:03,159 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:03,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:31:03,159 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:31:03,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:03,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1596957376, now seen corresponding path program 2 times [2024-01-27 15:31:03,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:03,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155259217] [2024-01-27 15:31:03,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:03,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:31:04,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:04,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155259217] [2024-01-27 15:31:04,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155259217] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:04,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:04,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-01-27 15:31:04,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905839995] [2024-01-27 15:31:04,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:04,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-27 15:31:04,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:04,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-27 15:31:04,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2024-01-27 15:31:04,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-01-27 15:31:04,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 160 flow. Second operand has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 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 15:31:04,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:04,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-01-27 15:31:04,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:13,100 INFO L124 PetriNetUnfolderBase]: 86153/112232 cut-off events. [2024-01-27 15:31:13,101 INFO L125 PetriNetUnfolderBase]: For 11822/11822 co-relation queries the response was YES. [2024-01-27 15:31:13,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235480 conditions, 112232 events. 86153/112232 cut-off events. For 11822/11822 co-relation queries the response was YES. Maximal size of possible extension queue 1675. Compared 605892 event pairs, 24138 based on Foata normal form. 1/108645 useless extension candidates. Maximal degree in co-relation 103935. Up to 82527 conditions per place. [2024-01-27 15:31:13,725 INFO L140 encePairwiseOnDemand]: 63/83 looper letters, 368 selfloop transitions, 91 changer transitions 22/490 dead transitions. [2024-01-27 15:31:13,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 490 transitions, 2113 flow [2024-01-27 15:31:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-01-27 15:31:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-01-27 15:31:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 962 transitions. [2024-01-27 15:31:13,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3621987951807229 [2024-01-27 15:31:13,730 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 160 flow. Second operand 32 states and 962 transitions. [2024-01-27 15:31:13,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 490 transitions, 2113 flow [2024-01-27 15:31:13,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 490 transitions, 2099 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-01-27 15:31:13,783 INFO L231 Difference]: Finished difference. Result has 118 places, 155 transitions, 661 flow [2024-01-27 15:31:13,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=661, PETRI_PLACES=118, PETRI_TRANSITIONS=155} [2024-01-27 15:31:13,783 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 39 predicate places. [2024-01-27 15:31:13,784 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 155 transitions, 661 flow [2024-01-27 15:31:13,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 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 15:31:13,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:13,784 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:13,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:31:13,785 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:31:13,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:13,785 INFO L85 PathProgramCache]: Analyzing trace with hash -601172390, now seen corresponding path program 3 times [2024-01-27 15:31:13,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:13,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717378620] [2024-01-27 15:31:13,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:13,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:14,547 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 15:31:14,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:14,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717378620] [2024-01-27 15:31:14,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717378620] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:14,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:14,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-01-27 15:31:14,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544180474] [2024-01-27 15:31:14,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:14,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-27 15:31:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:14,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-27 15:31:14,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2024-01-27 15:31:14,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-01-27 15:31:14,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 155 transitions, 661 flow. Second operand has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 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 15:31:14,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:14,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-01-27 15:31:14,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:28,128 INFO L124 PetriNetUnfolderBase]: 112617/146915 cut-off events. [2024-01-27 15:31:28,128 INFO L125 PetriNetUnfolderBase]: For 127031/127067 co-relation queries the response was YES. [2024-01-27 15:31:28,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 393300 conditions, 146915 events. 112617/146915 cut-off events. For 127031/127067 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 820282 event pairs, 35559 based on Foata normal form. 25/141966 useless extension candidates. Maximal degree in co-relation 378181. Up to 110125 conditions per place. [2024-01-27 15:31:29,624 INFO L140 encePairwiseOnDemand]: 65/83 looper letters, 574 selfloop transitions, 151 changer transitions 38/772 dead transitions. [2024-01-27 15:31:29,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 772 transitions, 4207 flow [2024-01-27 15:31:29,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-01-27 15:31:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-01-27 15:31:29,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 1274 transitions. [2024-01-27 15:31:29,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3654618473895582 [2024-01-27 15:31:29,629 INFO L175 Difference]: Start difference. First operand has 118 places, 155 transitions, 661 flow. Second operand 42 states and 1274 transitions. [2024-01-27 15:31:29,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 772 transitions, 4207 flow [2024-01-27 15:31:30,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 772 transitions, 4197 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-01-27 15:31:30,594 INFO L231 Difference]: Finished difference. Result has 170 places, 305 transitions, 1914 flow [2024-01-27 15:31:30,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1914, PETRI_PLACES=170, PETRI_TRANSITIONS=305} [2024-01-27 15:31:30,595 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 91 predicate places. [2024-01-27 15:31:30,595 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 305 transitions, 1914 flow [2024-01-27 15:31:30,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 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 15:31:30,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:30,596 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:30,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:31:30,596 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:31:30,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:30,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1274472890, now seen corresponding path program 4 times [2024-01-27 15:31:30,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:30,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118644472] [2024-01-27 15:31:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:30,680 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 15:31:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:30,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118644472] [2024-01-27 15:31:30,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118644472] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:30,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:30,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:31:30,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913294884] [2024-01-27 15:31:30,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:30,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:31:30,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:30,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:31:30,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:31:30,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 83 [2024-01-27 15:31:30,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 305 transitions, 1914 flow. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:31:30,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:30,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 83 [2024-01-27 15:31:30,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:36,711 INFO L124 PetriNetUnfolderBase]: 41989/61447 cut-off events. [2024-01-27 15:31:36,711 INFO L125 PetriNetUnfolderBase]: For 46840/47728 co-relation queries the response was YES. [2024-01-27 15:31:37,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156099 conditions, 61447 events. 41989/61447 cut-off events. For 46840/47728 co-relation queries the response was YES. Maximal size of possible extension queue 1796. Compared 433028 event pairs, 28047 based on Foata normal form. 538/54467 useless extension candidates. Maximal degree in co-relation 156051. Up to 41771 conditions per place. [2024-01-27 15:31:37,555 INFO L140 encePairwiseOnDemand]: 80/83 looper letters, 60 selfloop transitions, 3 changer transitions 0/317 dead transitions. [2024-01-27 15:31:37,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 317 transitions, 2050 flow [2024-01-27 15:31:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:31:37,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:31:37,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 152 transitions. [2024-01-27 15:31:37,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6104417670682731 [2024-01-27 15:31:37,556 INFO L175 Difference]: Start difference. First operand has 170 places, 305 transitions, 1914 flow. Second operand 3 states and 152 transitions. [2024-01-27 15:31:37,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 317 transitions, 2050 flow [2024-01-27 15:31:39,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 317 transitions, 1757 flow, removed 137 selfloop flow, removed 2 redundant places. [2024-01-27 15:31:39,387 INFO L231 Difference]: Finished difference. Result has 168 places, 296 transitions, 1584 flow [2024-01-27 15:31:39,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1584, PETRI_PLACES=168, PETRI_TRANSITIONS=296} [2024-01-27 15:31:39,388 INFO L281 CegarLoopForPetriNet]: 79 programPoint places, 89 predicate places. [2024-01-27 15:31:39,388 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 296 transitions, 1584 flow [2024-01-27 15:31:39,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 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 15:31:39,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:39,389 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, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:39,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:31:39,389 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2024-01-27 15:31:39,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:39,390 INFO L85 PathProgramCache]: Analyzing trace with hash 960916950, now seen corresponding path program 5 times [2024-01-27 15:31:39,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:39,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368668502] [2024-01-27 15:31:39,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:39,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:40,124 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 15:31:40,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:40,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368668502] [2024-01-27 15:31:40,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368668502] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:31:40,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:31:40,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-01-27 15:31:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040597297] [2024-01-27 15:31:40,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:31:40,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-01-27 15:31:40,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:40,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-01-27 15:31:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-01-27 15:31:40,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 83 [2024-01-27 15:31:40,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 296 transitions, 1584 flow. Second operand has 19 states, 19 states have (on average 17.68421052631579) internal successors, (336), 19 states have internal predecessors, (336), 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 15:31:40,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:40,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 83 [2024-01-27 15:31:40,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand