./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 14:23:19,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 14:23:19,786 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 14:23:19,791 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 14:23:19,792 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 14:23:19,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 14:23:19,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 14:23:19,809 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 14:23:19,809 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 14:23:19,810 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 14:23:19,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 14:23:19,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 14:23:19,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 14:23:19,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 14:23:19,811 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 14:23:19,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 14:23:19,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 14:23:19,812 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 14:23:19,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 14:23:19,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 14:23:19,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 14:23:19,815 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 14:23:19,815 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 14:23:19,815 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 14:23:19,816 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 14:23:19,816 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 14:23:19,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 14:23:19,816 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 14:23:19,816 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 14:23:19,816 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 14:23:19,817 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 14:23:19,817 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 14:23:19,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:23:19,817 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 14:23:19,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 14:23:19,817 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 14:23:19,818 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 14:23:19,818 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 14:23:19,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 14:23:19,819 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 14:23:19,820 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 14:23:19,820 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 14:23:19,820 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a10f98c1a89e2ac521234c9e4f0eca565cc5bc1484e9c7d67d861e216c6f9ba [2024-10-11 14:23:20,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 14:23:20,065 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 14:23:20,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 14:23:20,068 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 14:23:20,068 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 14:23:20,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-10-11 14:23:21,318 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 14:23:21,504 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 14:23:21,505 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i [2024-10-11 14:23:21,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8b78dfe1e/001cdfc96d3e46c28d7a1dae7e571be9/FLAG29f562c7b [2024-10-11 14:23:21,548 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/8b78dfe1e/001cdfc96d3e46c28d7a1dae7e571be9 [2024-10-11 14:23:21,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 14:23:21,552 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 14:23:21,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 14:23:21,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 14:23:21,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 14:23:21,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:21" (1/1) ... [2024-10-11 14:23:21,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e39f2d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:21, skipping insertion in model container [2024-10-11 14:23:21,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:21" (1/1) ... [2024-10-11 14:23:21,595 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 14:23:21,925 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2024-10-11 14:23:21,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:23:21,957 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 14:23:21,984 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_70-funloop_racefree.i[41323,41336] [2024-10-11 14:23:21,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 14:23:22,039 INFO L204 MainTranslator]: Completed translation [2024-10-11 14:23:22,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22 WrapperNode [2024-10-11 14:23:22,040 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 14:23:22,041 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 14:23:22,041 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 14:23:22,041 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 14:23:22,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,094 INFO L138 Inliner]: procedures = 272, calls = 35, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 218 [2024-10-11 14:23:22,097 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 14:23:22,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 14:23:22,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 14:23:22,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 14:23:22,106 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,111 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,129 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 5, 11, 2]. 55 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0]. The 6 writes are split as follows [0, 0, 5, 1]. [2024-10-11 14:23:22,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,151 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,160 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 14:23:22,161 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 14:23:22,161 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 14:23:22,161 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 14:23:22,162 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (1/1) ... [2024-10-11 14:23:22,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 14:23:22,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:23:22,193 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 14:23:22,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 14:23:22,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 14:23:22,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 14:23:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-11 14:23:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 14:23:22,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 14:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 14:23:22,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 14:23:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 14:23:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 14:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 14:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 14:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-11 14:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 14:23:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-10-11 14:23:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-10-11 14:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 14:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 14:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 14:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 14:23:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 14:23:22,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 14:23:22,283 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-11 14:23:22,421 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 14:23:22,423 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 14:23:22,658 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-11 14:23:22,659 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 14:23:22,795 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 14:23:22,795 INFO L314 CfgBuilder]: Removed 25 assume(true) statements. [2024-10-11 14:23:22,796 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:22 BoogieIcfgContainer [2024-10-11 14:23:22,796 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 14:23:22,797 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 14:23:22,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 14:23:22,801 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 14:23:22,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:21" (1/3) ... [2024-10-11 14:23:22,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59575090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:22, skipping insertion in model container [2024-10-11 14:23:22,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:22" (2/3) ... [2024-10-11 14:23:22,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59575090 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:22, skipping insertion in model container [2024-10-11 14:23:22,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:22" (3/3) ... [2024-10-11 14:23:22,804 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_70-funloop_racefree.i [2024-10-11 14:23:22,816 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 14:23:22,816 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-11 14:23:22,816 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-11 14:23:22,850 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-10-11 14:23:22,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 97 transitions, 201 flow [2024-10-11 14:23:22,927 INFO L124 PetriNetUnfolderBase]: 41/143 cut-off events. [2024-10-11 14:23:22,927 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-11 14:23:22,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 41/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 539 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 90. Up to 8 conditions per place. [2024-10-11 14:23:22,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 97 transitions, 201 flow [2024-10-11 14:23:22,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 95 transitions, 194 flow [2024-10-11 14:23:22,946 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:23:22,951 INFO L333 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, 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;@18496c34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:23:22,951 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-11 14:23:22,955 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:23:22,955 INFO L124 PetriNetUnfolderBase]: 1/19 cut-off events. [2024-10-11 14:23:22,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:23:22,956 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:22,956 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-10-11 14:23:22,957 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-11 14:23:22,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:22,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1661654838, now seen corresponding path program 1 times [2024-10-11 14:23:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:22,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532843170] [2024-10-11 14:23:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:23,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:23,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:23:23,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:23:23,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532843170] [2024-10-11 14:23:23,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532843170] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:23:23,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:23:23,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:23:23,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195105553] [2024-10-11 14:23:23,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:23:23,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:23:23,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:23:23,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:23:23,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:23:23,219 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-10-11 14:23:23,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:23:23,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:23:23,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-10-11 14:23:23,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:23:23,492 INFO L124 PetriNetUnfolderBase]: 483/1328 cut-off events. [2024-10-11 14:23:23,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:23:23,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1328 events. 483/1328 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8498 event pairs, 396 based on Foata normal form. 297/1456 useless extension candidates. Maximal degree in co-relation 2168. Up to 909 conditions per place. [2024-10-11 14:23:23,502 INFO L140 encePairwiseOnDemand]: 72/97 looper letters, 45 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2024-10-11 14:23:23,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 74 transitions, 246 flow [2024-10-11 14:23:23,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:23:23,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:23:23,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 151 transitions. [2024-10-11 14:23:23,513 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5189003436426117 [2024-10-11 14:23:23,514 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 194 flow. Second operand 3 states and 151 transitions. [2024-10-11 14:23:23,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 74 transitions, 246 flow [2024-10-11 14:23:23,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 74 transitions, 246 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:23:23,521 INFO L231 Difference]: Finished difference. Result has 74 places, 74 transitions, 162 flow [2024-10-11 14:23:23,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=74, PETRI_TRANSITIONS=74} [2024-10-11 14:23:23,526 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 3 predicate places. [2024-10-11 14:23:23,527 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 74 transitions, 162 flow [2024-10-11 14:23:23,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 14:23:23,527 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:23,527 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-11 14:23:23,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 14:23:23,528 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-11 14:23:23,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1744152463, now seen corresponding path program 1 times [2024-10-11 14:23:23,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:23,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562254493] [2024-10-11 14:23:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:23,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:23:23,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:23:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562254493] [2024-10-11 14:23:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562254493] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:23:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711401228] [2024-10-11 14:23:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:23,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:23:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:23:23,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:23:23,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 14:23:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:23,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 14:23:23,713 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:23:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:23:23,738 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:23:23,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:23:23,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711401228] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:23:23,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:23:23,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-11 14:23:23,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087931759] [2024-10-11 14:23:23,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:23:23,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:23:23,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:23:23,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:23:23,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:23:23,760 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-10-11 14:23:23,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 74 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2024-10-11 14:23:23,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:23:23,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-10-11 14:23:23,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:23:23,982 INFO L124 PetriNetUnfolderBase]: 483/1331 cut-off events. [2024-10-11 14:23:23,982 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-11 14:23:23,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2258 conditions, 1331 events. 483/1331 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8498 event pairs, 396 based on Foata normal form. 0/1162 useless extension candidates. Maximal degree in co-relation 2246. Up to 909 conditions per place. [2024-10-11 14:23:23,988 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-10-11 14:23:23,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 77 transitions, 274 flow [2024-10-11 14:23:23,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:23:23,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:23:23,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 215 transitions. [2024-10-11 14:23:23,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3694158075601375 [2024-10-11 14:23:23,992 INFO L175 Difference]: Start difference. First operand has 74 places, 74 transitions, 162 flow. Second operand 6 states and 215 transitions. [2024-10-11 14:23:23,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 77 transitions, 274 flow [2024-10-11 14:23:23,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 77 transitions, 270 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:23:23,994 INFO L231 Difference]: Finished difference. Result has 81 places, 77 transitions, 194 flow [2024-10-11 14:23:23,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=194, PETRI_PLACES=81, PETRI_TRANSITIONS=77} [2024-10-11 14:23:23,996 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 10 predicate places. [2024-10-11 14:23:23,996 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 77 transitions, 194 flow [2024-10-11 14:23:23,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 28.571428571428573) internal successors, (200), 7 states have internal predecessors, (200), 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) [2024-10-11 14:23:23,999 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:23,999 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2024-10-11 14:23:24,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 14:23:24,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:23:24,204 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-11 14:23:24,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1352096394, now seen corresponding path program 2 times [2024-10-11 14:23:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222216253] [2024-10-11 14:23:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:24,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:24,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:23:24,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:23:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222216253] [2024-10-11 14:23:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222216253] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:23:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629946010] [2024-10-11 14:23:24,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:23:24,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:23:24,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:23:24,334 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:23:24,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 14:23:24,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:23:24,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:23:24,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:23:24,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:23:24,434 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:23:24,434 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:23:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 14:23:24,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629946010] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:23:24,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:23:24,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-11 14:23:24,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290862352] [2024-10-11 14:23:24,489 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:23:24,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:23:24,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:23:24,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:23:24,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:23:24,490 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 97 [2024-10-11 14:23:24,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 77 transitions, 194 flow. Second operand has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 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) [2024-10-11 14:23:24,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:23:24,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 97 [2024-10-11 14:23:24,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:23:24,697 INFO L124 PetriNetUnfolderBase]: 483/1337 cut-off events. [2024-10-11 14:23:24,698 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-11 14:23:24,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 1337 events. 483/1337 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8496 event pairs, 396 based on Foata normal form. 6/1175 useless extension candidates. Maximal degree in co-relation 2237. Up to 909 conditions per place. [2024-10-11 14:23:24,702 INFO L140 encePairwiseOnDemand]: 94/97 looper letters, 45 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2024-10-11 14:23:24,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 83 transitions, 342 flow [2024-10-11 14:23:24,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:23:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:23:24,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 386 transitions. [2024-10-11 14:23:24,704 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3316151202749141 [2024-10-11 14:23:24,705 INFO L175 Difference]: Start difference. First operand has 81 places, 77 transitions, 194 flow. Second operand 12 states and 386 transitions. [2024-10-11 14:23:24,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 83 transitions, 342 flow [2024-10-11 14:23:24,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 328 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 14:23:24,707 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 264 flow [2024-10-11 14:23:24,707 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=97, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=264, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-10-11 14:23:24,708 INFO L277 CegarLoopForPetriNet]: 71 programPoint places, 26 predicate places. [2024-10-11 14:23:24,708 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 264 flow [2024-10-11 14:23:24,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 28.307692307692307) internal successors, (368), 13 states have internal predecessors, (368), 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) [2024-10-11 14:23:24,708 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:24,709 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2024-10-11 14:23:24,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 14:23:24,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:23:24,911 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-10-11 14:23:24,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:24,912 INFO L85 PathProgramCache]: Analyzing trace with hash -60670250, now seen corresponding path program 3 times [2024-10-11 14:23:24,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:24,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912123454] [2024-10-11 14:23:24,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:24,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 14:23:24,944 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 14:23:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 14:23:24,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 14:23:24,979 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 14:23:24,980 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-11 14:23:24,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-10-11 14:23:24,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-10-11 14:23:24,981 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-10-11 14:23:24,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 14:23:24,982 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-11 14:23:24,983 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 14:23:24,983 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-11 14:23:25,015 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-11 14:23:25,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 142 transitions, 300 flow [2024-10-11 14:23:25,036 INFO L124 PetriNetUnfolderBase]: 69/241 cut-off events. [2024-10-11 14:23:25,036 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-11 14:23:25,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 241 events. 69/241 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1106 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 145. Up to 12 conditions per place. [2024-10-11 14:23:25,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 142 transitions, 300 flow [2024-10-11 14:23:25,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 142 transitions, 300 flow [2024-10-11 14:23:25,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:23:25,042 INFO L333 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, 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;@18496c34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:23:25,043 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-11 14:23:25,047 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:23:25,048 INFO L124 PetriNetUnfolderBase]: 7/53 cut-off events. [2024-10-11 14:23:25,048 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-11 14:23:25,048 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:25,048 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1] [2024-10-11 14:23:25,048 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-11 14:23:25,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1023765236, now seen corresponding path program 1 times [2024-10-11 14:23:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470639562] [2024-10-11 14:23:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:25,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:23:25,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:23:25,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470639562] [2024-10-11 14:23:25,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470639562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:23:25,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:23:25,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:23:25,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511115056] [2024-10-11 14:23:25,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:23:25,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:23:25,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:23:25,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:23:25,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:23:25,089 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-10-11 14:23:25,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 142 transitions, 300 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) [2024-10-11 14:23:25,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:23:25,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-10-11 14:23:25,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:23:27,392 INFO L124 PetriNetUnfolderBase]: 18464/36000 cut-off events. [2024-10-11 14:23:27,393 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-10-11 14:23:27,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62627 conditions, 36000 events. 18464/36000 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 336560 event pairs, 15876 based on Foata normal form. 8816/40294 useless extension candidates. Maximal degree in co-relation 50794. Up to 26524 conditions per place. [2024-10-11 14:23:27,552 INFO L140 encePairwiseOnDemand]: 106/142 looper letters, 68 selfloop transitions, 2 changer transitions 0/110 dead transitions. [2024-10-11 14:23:27,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 110 transitions, 376 flow [2024-10-11 14:23:27,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 14:23:27,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-11 14:23:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 224 transitions. [2024-10-11 14:23:27,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5258215962441315 [2024-10-11 14:23:27,555 INFO L175 Difference]: Start difference. First operand has 105 places, 142 transitions, 300 flow. Second operand 3 states and 224 transitions. [2024-10-11 14:23:27,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 110 transitions, 376 flow [2024-10-11 14:23:27,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 376 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-11 14:23:27,558 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 246 flow [2024-10-11 14:23:27,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=246, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2024-10-11 14:23:27,558 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 3 predicate places. [2024-10-11 14:23:27,558 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 246 flow [2024-10-11 14:23:27,559 INFO L472 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) [2024-10-11 14:23:27,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:27,559 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-10-11 14:23:27,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 14:23:27,559 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-11 14:23:27,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:27,560 INFO L85 PathProgramCache]: Analyzing trace with hash 225195785, now seen corresponding path program 1 times [2024-10-11 14:23:27,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:27,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437940640] [2024-10-11 14:23:27,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:27,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:23:27,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:23:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437940640] [2024-10-11 14:23:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437940640] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:23:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818522179] [2024-10-11 14:23:27,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:27,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:23:27,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:23:27,591 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:23:27,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 14:23:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:27,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-11 14:23:27,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:23:27,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:23:27,672 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:23:27,685 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:23:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [818522179] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:23:27,685 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:23:27,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-10-11 14:23:27,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521474818] [2024-10-11 14:23:27,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:23:27,686 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 14:23:27,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:23:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 14:23:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-11 14:23:27,687 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-10-11 14:23:27,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 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) [2024-10-11 14:23:27,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:23:27,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-10-11 14:23:27,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:23:29,766 INFO L124 PetriNetUnfolderBase]: 18464/36003 cut-off events. [2024-10-11 14:23:29,766 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-10-11 14:23:29,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62643 conditions, 36003 events. 18464/36003 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 336477 event pairs, 15876 based on Foata normal form. 0/31481 useless extension candidates. Maximal degree in co-relation 62630. Up to 26524 conditions per place. [2024-10-11 14:23:29,894 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 68 selfloop transitions, 5 changer transitions 0/113 dead transitions. [2024-10-11 14:23:29,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 113 transitions, 404 flow [2024-10-11 14:23:29,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 14:23:29,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-11 14:23:29,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 316 transitions. [2024-10-11 14:23:29,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37089201877934275 [2024-10-11 14:23:29,896 INFO L175 Difference]: Start difference. First operand has 108 places, 110 transitions, 246 flow. Second operand 6 states and 316 transitions. [2024-10-11 14:23:29,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 113 transitions, 404 flow [2024-10-11 14:23:29,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 113 transitions, 400 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-11 14:23:29,899 INFO L231 Difference]: Finished difference. Result has 115 places, 113 transitions, 278 flow [2024-10-11 14:23:29,899 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=115, PETRI_TRANSITIONS=113} [2024-10-11 14:23:29,900 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2024-10-11 14:23:29,900 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 113 transitions, 278 flow [2024-10-11 14:23:29,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 41.714285714285715) internal successors, (292), 7 states have internal predecessors, (292), 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) [2024-10-11 14:23:29,900 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:29,900 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 14:23:29,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 14:23:30,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:23:30,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-11 14:23:30,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:30,102 INFO L85 PathProgramCache]: Analyzing trace with hash -2040379340, now seen corresponding path program 2 times [2024-10-11 14:23:30,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:30,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48416752] [2024-10-11 14:23:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:30,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:23:30,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:23:30,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48416752] [2024-10-11 14:23:30,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48416752] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 14:23:30,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533822283] [2024-10-11 14:23:30,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 14:23:30,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 14:23:30,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 14:23:30,167 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 14:23:30,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 14:23:30,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 14:23:30,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 14:23:30,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-11 14:23:30,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 14:23:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:23:30,256 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 14:23:30,304 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-11 14:23:30,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533822283] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 14:23:30,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 14:23:30,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-10-11 14:23:30,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973874140] [2024-10-11 14:23:30,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 14:23:30,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 14:23:30,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:23:30,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 14:23:30,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-11 14:23:30,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 142 [2024-10-11 14:23:30,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 113 transitions, 278 flow. Second operand has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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) [2024-10-11 14:23:30,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:23:30,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 142 [2024-10-11 14:23:30,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-11 14:23:32,841 INFO L124 PetriNetUnfolderBase]: 18464/36009 cut-off events. [2024-10-11 14:23:32,841 INFO L125 PetriNetUnfolderBase]: For 181/181 co-relation queries the response was YES. [2024-10-11 14:23:32,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62680 conditions, 36009 events. 18464/36009 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 336444 event pairs, 15876 based on Foata normal form. 6/31494 useless extension candidates. Maximal degree in co-relation 62621. Up to 26524 conditions per place. [2024-10-11 14:23:32,969 INFO L140 encePairwiseOnDemand]: 139/142 looper letters, 68 selfloop transitions, 11 changer transitions 0/119 dead transitions. [2024-10-11 14:23:32,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 119 transitions, 472 flow [2024-10-11 14:23:32,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-11 14:23:32,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-11 14:23:32,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 565 transitions. [2024-10-11 14:23:32,973 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3315727699530516 [2024-10-11 14:23:32,973 INFO L175 Difference]: Start difference. First operand has 115 places, 113 transitions, 278 flow. Second operand 12 states and 565 transitions. [2024-10-11 14:23:32,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 119 transitions, 472 flow [2024-10-11 14:23:32,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 119 transitions, 458 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-10-11 14:23:32,978 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 348 flow [2024-10-11 14:23:32,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=348, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-10-11 14:23:32,981 INFO L277 CegarLoopForPetriNet]: 105 programPoint places, 26 predicate places. [2024-10-11 14:23:32,981 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 348 flow [2024-10-11 14:23:32,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 41.38461538461539) internal successors, (538), 13 states have internal predecessors, (538), 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) [2024-10-11 14:23:32,981 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:32,981 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 1, 1, 1, 1, 1] [2024-10-11 14:23:32,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 14:23:33,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 14:23:33,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-10-11 14:23:33,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:33,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2123065364, now seen corresponding path program 3 times [2024-10-11 14:23:33,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:33,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964884901] [2024-10-11 14:23:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:33,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 14:23:33,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-11 14:23:33,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-11 14:23:33,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-11 14:23:33,224 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-11 14:23:33,224 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-11 14:23:33,224 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-10-11 14:23:33,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-10-11 14:23:33,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-10-11 14:23:33,225 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-10-11 14:23:33,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 14:23:33,225 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1] [2024-10-11 14:23:33,226 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-11 14:23:33,226 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-11 14:23:33,255 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-11 14:23:33,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 187 transitions, 401 flow [2024-10-11 14:23:33,276 INFO L124 PetriNetUnfolderBase]: 100/350 cut-off events. [2024-10-11 14:23:33,276 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-10-11 14:23:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 350 events. 100/350 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1814 event pairs, 1 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 250. Up to 16 conditions per place. [2024-10-11 14:23:33,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 187 transitions, 401 flow [2024-10-11 14:23:33,280 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 187 transitions, 401 flow [2024-10-11 14:23:33,281 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 14:23:33,282 INFO L333 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, 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;@18496c34, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 14:23:33,282 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-11 14:23:33,287 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-11 14:23:33,287 INFO L124 PetriNetUnfolderBase]: 17/104 cut-off events. [2024-10-11 14:23:33,287 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-10-11 14:23:33,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-11 14:23:33,287 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 14:23:33,287 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-10-11 14:23:33,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 14:23:33,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1250725882, now seen corresponding path program 1 times [2024-10-11 14:23:33,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 14:23:33,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674227491] [2024-10-11 14:23:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 14:23:33,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 14:23:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 14:23:33,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 14:23:33,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 14:23:33,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674227491] [2024-10-11 14:23:33,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674227491] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 14:23:33,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 14:23:33,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 14:23:33,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605195248] [2024-10-11 14:23:33,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 14:23:33,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 14:23:33,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 14:23:33,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 14:23:33,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 14:23:33,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 187 [2024-10-11 14:23:33,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 187 transitions, 401 flow. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 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) [2024-10-11 14:23:33,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-11 14:23:33,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 187 [2024-10-11 14:23:33,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand