./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de 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/chl-collitem-subst.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 e60e484eb5ab810972130a1d83dccbab591b96ac9007b9b56059ed6674807329 --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:33:22,038 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:33:22,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:33:22,107 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:33:22,108 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:33:22,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:33:22,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:33:22,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:33:22,146 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:33:22,151 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:33:22,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:33:22,152 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:33:22,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:33:22,156 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:33:22,156 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:33:22,156 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:33:22,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:33:22,157 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:33:22,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:33:22,157 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:33:22,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:33:22,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:33:22,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:33:22,158 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:33:22,159 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:33:22,159 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:33:22,159 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:33:22,159 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:33:22,160 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:33:22,161 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:33:22,161 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:33:22,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:33:22,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:33:22,162 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:33:22,162 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:33:22,163 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:33:22,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:33:22,163 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:33:22,163 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:33:22,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:33:22,164 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:33:22,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:33:22,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:33:22,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e60e484eb5ab810972130a1d83dccbab591b96ac9007b9b56059ed6674807329 [2024-06-27 16:33:22,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:33:22,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:33:22,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:33:22,420 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:33:22,420 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:33:22,421 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2024-06-27 16:33:23,492 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:33:23,657 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:33:23,657 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2024-06-27 16:33:23,663 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ea96d99/1b5914a3ce414c58985a4e7acc6debb7/FLAG77b41ca22 [2024-06-27 16:33:23,671 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02ea96d99/1b5914a3ce414c58985a4e7acc6debb7 [2024-06-27 16:33:23,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:33:23,674 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:33:23,675 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:33:23,675 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:33:23,684 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:33:23,685 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:23,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c788fb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23, skipping insertion in model container [2024-06-27 16:33:23,686 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:23,710 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:33:23,827 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c[3583,3596] [2024-06-27 16:33:23,834 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:33:23,845 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:33:23,862 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c[3583,3596] [2024-06-27 16:33:23,864 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:33:23,876 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:33:23,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23 WrapperNode [2024-06-27 16:33:23,877 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:33:23,878 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:33:23,879 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:33:23,879 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:33:23,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:23,904 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:23,956 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 349 [2024-06-27 16:33:23,956 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:33:23,957 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:33:23,957 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:33:23,957 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:33:23,968 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:23,969 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:23,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:24,019 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 16:33:24,036 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:24,036 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:24,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:24,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:24,060 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:24,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:24,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:33:24,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:33:24,072 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:33:24,072 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:33:24,073 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (1/1) ... [2024-06-27 16:33:24,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:33:24,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:24,096 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) [2024-06-27 16:33:24,137 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 [2024-06-27 16:33:24,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:33:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:33:24,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:33:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:33:24,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:33:24,167 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:33:24,167 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:33:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:33:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:33:24,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:33:24,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:33:24,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:33:24,171 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 16:33:24,245 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:33:24,246 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:33:24,598 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:33:24,598 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:33:24,943 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:33:24,944 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:33:24,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:33:24 BoogieIcfgContainer [2024-06-27 16:33:24,945 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:33:24,946 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:33:24,947 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:33:24,949 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:33:24,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:33:23" (1/3) ... [2024-06-27 16:33:24,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292e3058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:33:24, skipping insertion in model container [2024-06-27 16:33:24,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:23" (2/3) ... [2024-06-27 16:33:24,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292e3058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:33:24, skipping insertion in model container [2024-06-27 16:33:24,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:33:24" (3/3) ... [2024-06-27 16:33:24,952 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2024-06-27 16:33:24,959 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:33:24,965 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:33:24,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:33:24,966 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:33:25,081 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:33:25,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 71 flow [2024-06-27 16:33:25,145 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-06-27 16:33:25,145 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:33:25,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 22 events. 0/22 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-27 16:33:25,147 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 25 transitions, 71 flow [2024-06-27 16:33:25,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 21 transitions, 60 flow [2024-06-27 16:33:25,161 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:33:25,167 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;@7c8b32c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:33:25,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:33:25,179 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:33:25,180 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-06-27 16:33:25,180 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:33:25,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:25,181 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] [2024-06-27 16:33:25,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:25,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:25,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1313768297, now seen corresponding path program 1 times [2024-06-27 16:33:25,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:25,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167257213] [2024-06-27 16:33:25,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:25,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:33:29,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:29,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167257213] [2024-06-27 16:33:29,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167257213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:29,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:29,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:33:29,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774296925] [2024-06-27 16:33:29,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:29,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:29,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:29,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:29,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:33:29,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:33:29,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 21 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:29,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:29,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:33:29,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:29,485 INFO L124 PetriNetUnfolderBase]: 178/331 cut-off events. [2024-06-27 16:33:29,485 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-06-27 16:33:29,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 331 events. 178/331 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1248 event pairs, 10 based on Foata normal form. 1/331 useless extension candidates. Maximal degree in co-relation 634. Up to 110 conditions per place. [2024-06-27 16:33:29,490 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 34 selfloop transitions, 6 changer transitions 8/52 dead transitions. [2024-06-27 16:33:29,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 248 flow [2024-06-27 16:33:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:29,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-27 16:33:29,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2024-06-27 16:33:29,500 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 60 flow. Second operand 6 states and 91 transitions. [2024-06-27 16:33:29,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 248 flow [2024-06-27 16:33:29,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 216 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 16:33:29,505 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 81 flow [2024-06-27 16:33:29,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2024-06-27 16:33:29,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-06-27 16:33:29,509 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 81 flow [2024-06-27 16:33:29,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:29,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:29,509 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] [2024-06-27 16:33:29,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:33:29,510 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:29,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:29,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1056235487, now seen corresponding path program 2 times [2024-06-27 16:33:29,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:29,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347083395] [2024-06-27 16:33:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:29,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:33:32,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:32,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347083395] [2024-06-27 16:33:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347083395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:32,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:33:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453864165] [2024-06-27 16:33:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:32,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:32,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:32,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:33:32,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:33:32,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:32,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:32,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:33:32,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:32,392 INFO L124 PetriNetUnfolderBase]: 194/366 cut-off events. [2024-06-27 16:33:32,393 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-06-27 16:33:32,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 366 events. 194/366 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1495 event pairs, 28 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 857. Up to 151 conditions per place. [2024-06-27 16:33:32,395 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 33 selfloop transitions, 6 changer transitions 12/55 dead transitions. [2024-06-27 16:33:32,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 55 transitions, 262 flow [2024-06-27 16:33:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:32,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-27 16:33:32,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-27 16:33:32,397 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 81 flow. Second operand 6 states and 93 transitions. [2024-06-27 16:33:32,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 55 transitions, 262 flow [2024-06-27 16:33:32,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 55 transitions, 258 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 16:33:32,398 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 92 flow [2024-06-27 16:33:32,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2024-06-27 16:33:32,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 16:33:32,399 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 92 flow [2024-06-27 16:33:32,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:32,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:32,400 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] [2024-06-27 16:33:32,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:33:32,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:32,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:32,400 INFO L85 PathProgramCache]: Analyzing trace with hash 449849307, now seen corresponding path program 3 times [2024-06-27 16:33:32,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:32,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503336728] [2024-06-27 16:33:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:32,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:33:33,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:33,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503336728] [2024-06-27 16:33:33,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503336728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:33,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:33,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:33:33,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189873269] [2024-06-27 16:33:33,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:33,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:33,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:33,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:33:33,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:33:33,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:33,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:33,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:33:33,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:34,015 INFO L124 PetriNetUnfolderBase]: 189/369 cut-off events. [2024-06-27 16:33:34,015 INFO L125 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2024-06-27 16:33:34,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 369 events. 189/369 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1537 event pairs, 16 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 914. Up to 190 conditions per place. [2024-06-27 16:33:34,017 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 31 selfloop transitions, 5 changer transitions 11/51 dead transitions. [2024-06-27 16:33:34,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 261 flow [2024-06-27 16:33:34,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:34,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:34,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-27 16:33:34,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 16:33:34,019 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 92 flow. Second operand 6 states and 90 transitions. [2024-06-27 16:33:34,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 261 flow [2024-06-27 16:33:34,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 237 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 16:33:34,021 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 92 flow [2024-06-27 16:33:34,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2024-06-27 16:33:34,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-27 16:33:34,022 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 92 flow [2024-06-27 16:33:34,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:34,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:34,022 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] [2024-06-27 16:33:34,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:33:34,022 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:34,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:34,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1403312429, now seen corresponding path program 4 times [2024-06-27 16:33:34,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:34,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200429578] [2024-06-27 16:33:34,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:34,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:35,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:33:35,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:35,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200429578] [2024-06-27 16:33:35,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200429578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:35,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:35,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:33:35,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113860643] [2024-06-27 16:33:35,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:35,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:35,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:35,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:35,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:33:35,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:33:35,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:35,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:35,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:33:35,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:35,722 INFO L124 PetriNetUnfolderBase]: 138/270 cut-off events. [2024-06-27 16:33:35,722 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-06-27 16:33:35,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 270 events. 138/270 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 992 event pairs, 9 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 669. Up to 93 conditions per place. [2024-06-27 16:33:35,724 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 30 selfloop transitions, 5 changer transitions 10/49 dead transitions. [2024-06-27 16:33:35,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 49 transitions, 248 flow [2024-06-27 16:33:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:35,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:35,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-27 16:33:35,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-06-27 16:33:35,749 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 92 flow. Second operand 6 states and 88 transitions. [2024-06-27 16:33:35,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 49 transitions, 248 flow [2024-06-27 16:33:35,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 49 transitions, 233 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 16:33:35,751 INFO L231 Difference]: Finished difference. Result has 42 places, 24 transitions, 96 flow [2024-06-27 16:33:35,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=42, PETRI_TRANSITIONS=24} [2024-06-27 16:33:35,751 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-27 16:33:35,752 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 24 transitions, 96 flow [2024-06-27 16:33:35,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:35,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:35,752 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] [2024-06-27 16:33:35,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:33:35,752 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:35,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:35,753 INFO L85 PathProgramCache]: Analyzing trace with hash -783359727, now seen corresponding path program 5 times [2024-06-27 16:33:35,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:35,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366230961] [2024-06-27 16:33:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:35,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:35,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:37,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:33:37,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:37,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366230961] [2024-06-27 16:33:37,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366230961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:37,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:37,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:33:37,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829593320] [2024-06-27 16:33:37,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:37,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:37,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:37,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:37,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:33:37,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:33:37,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 24 transitions, 96 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:37,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:37,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:33:37,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:38,020 INFO L124 PetriNetUnfolderBase]: 106/213 cut-off events. [2024-06-27 16:33:38,020 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-06-27 16:33:38,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 213 events. 106/213 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 734 event pairs, 20 based on Foata normal form. 1/213 useless extension candidates. Maximal degree in co-relation 562. Up to 109 conditions per place. [2024-06-27 16:33:38,021 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 19 selfloop transitions, 3 changer transitions 16/42 dead transitions. [2024-06-27 16:33:38,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 220 flow [2024-06-27 16:33:38,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 81 transitions. [2024-06-27 16:33:38,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.54 [2024-06-27 16:33:38,037 INFO L175 Difference]: Start difference. First operand has 42 places, 24 transitions, 96 flow. Second operand 6 states and 81 transitions. [2024-06-27 16:33:38,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 220 flow [2024-06-27 16:33:38,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 215 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 16:33:38,038 INFO L231 Difference]: Finished difference. Result has 44 places, 21 transitions, 77 flow [2024-06-27 16:33:38,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=44, PETRI_TRANSITIONS=21} [2024-06-27 16:33:38,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-27 16:33:38,039 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 21 transitions, 77 flow [2024-06-27 16:33:38,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:38,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:38,039 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] [2024-06-27 16:33:38,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:33:38,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 16:33:38,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:38,040 INFO L85 PathProgramCache]: Analyzing trace with hash 742057575, now seen corresponding path program 6 times [2024-06-27 16:33:38,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:38,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381116923] [2024-06-27 16:33:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:38,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:39,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 16:33:39,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:39,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381116923] [2024-06-27 16:33:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381116923] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:39,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:33:39,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145887328] [2024-06-27 16:33:39,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:39,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:39,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:33:39,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:33:39,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 21 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:39,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:39,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:33:39,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:39,966 INFO L124 PetriNetUnfolderBase]: 42/89 cut-off events. [2024-06-27 16:33:39,967 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2024-06-27 16:33:39,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 89 events. 42/89 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 0 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 240. Up to 54 conditions per place. [2024-06-27 16:33:39,968 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-27 16:33:39,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 132 flow [2024-06-27 16:33:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-27 16:33:39,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 16:33:39,969 INFO L175 Difference]: Start difference. First operand has 44 places, 21 transitions, 77 flow. Second operand 6 states and 66 transitions. [2024-06-27 16:33:39,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 132 flow [2024-06-27 16:33:39,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 115 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 16:33:39,972 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-27 16:33:39,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-27 16:33:39,974 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-27 16:33:39,975 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-27 16:33:39,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 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) [2024-06-27 16:33:39,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-06-27 16:33:39,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-06-27 16:33:39,977 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 16:33:39,978 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 16:33:39,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:33:39,978 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-06-27 16:33:39,980 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:33:39,980 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:33:39,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:33:39 BasicIcfg [2024-06-27 16:33:39,988 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:33:39,988 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:33:39,988 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:33:39,988 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:33:39,989 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:33:24" (3/4) ... [2024-06-27 16:33:39,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:33:39,992 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 16:33:39,992 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 16:33:39,993 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-06-27 16:33:39,997 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 103 nodes and edges [2024-06-27 16:33:39,997 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-06-27 16:33:39,998 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-06-27 16:33:39,998 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-06-27 16:33:40,082 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:33:40,083 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:33:40,083 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:33:40,083 INFO L158 Benchmark]: Toolchain (without parser) took 16409.42ms. Allocated memory was 157.3MB in the beginning and 1.0GB in the end (delta: 880.8MB). Free memory was 87.5MB in the beginning and 791.7MB in the end (delta: -704.1MB). Peak memory consumption was 178.7MB. Max. memory is 16.1GB. [2024-06-27 16:33:40,084 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 16:33:40,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 202.48ms. Allocated memory is still 157.3MB. Free memory was 87.2MB in the beginning and 74.5MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-06-27 16:33:40,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.19ms. Allocated memory is still 157.3MB. Free memory was 74.3MB in the beginning and 131.7MB in the end (delta: -57.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2024-06-27 16:33:40,084 INFO L158 Benchmark]: Boogie Preprocessor took 110.70ms. Allocated memory is still 157.3MB. Free memory was 131.7MB in the beginning and 127.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:33:40,085 INFO L158 Benchmark]: RCFGBuilder took 876.94ms. Allocated memory is still 157.3MB. Free memory was 127.5MB in the beginning and 62.3MB in the end (delta: 65.1MB). Peak memory consumption was 89.1MB. Max. memory is 16.1GB. [2024-06-27 16:33:40,085 INFO L158 Benchmark]: TraceAbstraction took 15041.59ms. Allocated memory was 157.3MB in the beginning and 1.0GB in the end (delta: 880.8MB). Free memory was 62.0MB in the beginning and 796.9MB in the end (delta: -734.9MB). Peak memory consumption was 145.9MB. Max. memory is 16.1GB. [2024-06-27 16:33:40,085 INFO L158 Benchmark]: Witness Printer took 94.87ms. Allocated memory is still 1.0GB. Free memory was 796.9MB in the beginning and 791.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-27 16:33:40,086 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 113.2MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 202.48ms. Allocated memory is still 157.3MB. Free memory was 87.2MB in the beginning and 74.5MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.19ms. Allocated memory is still 157.3MB. Free memory was 74.3MB in the beginning and 131.7MB in the end (delta: -57.3MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 110.70ms. Allocated memory is still 157.3MB. Free memory was 131.7MB in the beginning and 127.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 876.94ms. Allocated memory is still 157.3MB. Free memory was 127.5MB in the beginning and 62.3MB in the end (delta: 65.1MB). Peak memory consumption was 89.1MB. Max. memory is 16.1GB. * TraceAbstraction took 15041.59ms. Allocated memory was 157.3MB in the beginning and 1.0GB in the end (delta: 880.8MB). Free memory was 62.0MB in the beginning and 796.9MB in the end (delta: -734.9MB). Peak memory consumption was 145.9MB. Max. memory is 16.1GB. * Witness Printer took 94.87ms. Allocated memory is still 1.0GB. Free memory was 796.9MB in the beginning and 791.7MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 520 IncrementalHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 5184 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 16:33:40,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE