./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-collitem-trans.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-trans.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 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 16:33:53,052 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 16:33:53,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 16:33:53,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 16:33:53,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 16:33:53,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 16:33:53,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 16:33:53,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 16:33:53,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 16:33:53,163 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 16:33:53,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 16:33:53,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 16:33:53,165 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 16:33:53,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 16:33:53,166 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 16:33:53,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 16:33:53,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 16:33:53,166 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 16:33:53,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 16:33:53,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 16:33:53,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 16:33:53,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 16:33:53,168 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 16:33:53,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 16:33:53,168 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 16:33:53,168 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 16:33:53,168 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 16:33:53,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 16:33:53,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 16:33:53,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 16:33:53,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 16:33:53,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 16:33:53,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:33:53,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 16:33:53,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 16:33:53,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 16:33:53,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 16:33:53,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 16:33:53,172 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 16:33:53,172 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 16:33:53,172 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 16:33:53,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 16:33:53,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 16:33:53,173 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e310cbbcaa6ee1bb3c2e05a2a5fb7cb2ddde366fa4283fb7922170dd08986ab [2024-06-27 16:33:53,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 16:33:53,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 16:33:53,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 16:33:53,380 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 16:33:53,380 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 16:33:53,381 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2024-06-27 16:33:54,400 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 16:33:54,549 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 16:33:54,550 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-trans.wvr.c [2024-06-27 16:33:54,559 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76145590/3b46281c05b6459e86b55b1dc76fafd1/FLAG969f6ba57 [2024-06-27 16:33:54,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76145590/3b46281c05b6459e86b55b1dc76fafd1 [2024-06-27 16:33:54,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 16:33:54,574 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-06-27 16:33:54,576 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 16:33:54,576 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 16:33:54,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 16:33:54,582 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,583 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed38bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54, skipping insertion in model container [2024-06-27 16:33:54,583 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,603 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 16:33:54,789 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-trans.wvr.c[3520,3533] [2024-06-27 16:33:54,794 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:33:54,801 INFO L202 MainTranslator]: Completed pre-run [2024-06-27 16:33:54,817 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-trans.wvr.c[3520,3533] [2024-06-27 16:33:54,819 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 16:33:54,830 INFO L206 MainTranslator]: Completed translation [2024-06-27 16:33:54,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54 WrapperNode [2024-06-27 16:33:54,831 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 16:33:54,832 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 16:33:54,832 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 16:33:54,832 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 16:33:54,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,870 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 17, calls inlined = 39, statements flattened = 345 [2024-06-27 16:33:54,872 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 16:33:54,872 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 16:33:54,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 16:33:54,873 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 16:33:54,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,886 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,897 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 16:33:54,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,907 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,908 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,910 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 16:33:54,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 16:33:54,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 16:33:54,911 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 16:33:54,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (1/1) ... [2024-06-27 16:33:54,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 16:33:54,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 16:33:54,935 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 16:33:54,965 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 16:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 16:33:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-27 16:33:55,017 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-27 16:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-27 16:33:55,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-27 16:33:55,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-27 16:33:55,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-27 16:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 16:33:55,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 16:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 16:33:55,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 16:33:55,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 16:33:55,022 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 16:33:55,124 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 16:33:55,126 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 16:33:55,753 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 16:33:55,753 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 16:33:56,275 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 16:33:56,275 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 16:33:56,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:33:56 BoogieIcfgContainer [2024-06-27 16:33:56,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 16:33:56,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 16:33:56,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 16:33:56,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 16:33:56,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 04:33:54" (1/3) ... [2024-06-27 16:33:56,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5c9141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:33:56, skipping insertion in model container [2024-06-27 16:33:56,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 04:33:54" (2/3) ... [2024-06-27 16:33:56,283 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e5c9141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 04:33:56, skipping insertion in model container [2024-06-27 16:33:56,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:33:56" (3/3) ... [2024-06-27 16:33:56,284 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-trans.wvr.c [2024-06-27 16:33:56,290 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-06-27 16:33:56,297 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 16:33:56,297 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-06-27 16:33:56,297 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 16:33:56,361 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-27 16:33:56,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 71 flow [2024-06-27 16:33:56,419 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-06-27 16:33:56,419 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:33:56,421 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 16:33:56,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 25 transitions, 71 flow [2024-06-27 16:33:56,423 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 21 transitions, 60 flow [2024-06-27 16:33:56,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 16:33:56,442 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;@cbf20d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 16:33:56,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 16:33:56,454 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 16:33:56,454 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-06-27 16:33:56,454 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-27 16:33:56,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:56,455 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 16:33:56,455 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 16:33:56,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:56,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1240816726, now seen corresponding path program 1 times [2024-06-27 16:33:56,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:56,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111772922] [2024-06-27 16:33:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:56,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:33:58,922 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 16:33:58,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:33:58,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111772922] [2024-06-27 16:33:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111772922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:33:58,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:33:58,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:33:58,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776792022] [2024-06-27 16:33:58,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:33:58,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:33:58,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:33:58,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:33:58,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:33:58,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:33:58,959 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 16:33:58,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:33:58,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:33:58,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:33:59,311 INFO L124 PetriNetUnfolderBase]: 178/331 cut-off events. [2024-06-27 16:33:59,311 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-06-27 16:33:59,315 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 1253 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 16:33:59,318 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 34 selfloop transitions, 6 changer transitions 8/52 dead transitions. [2024-06-27 16:33:59,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 52 transitions, 248 flow [2024-06-27 16:33:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:33:59,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:33:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 91 transitions. [2024-06-27 16:33:59,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6066666666666667 [2024-06-27 16:33:59,330 INFO L175 Difference]: Start difference. First operand has 31 places, 21 transitions, 60 flow. Second operand 6 states and 91 transitions. [2024-06-27 16:33:59,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 52 transitions, 248 flow [2024-06-27 16:33:59,333 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 16:33:59,335 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 81 flow [2024-06-27 16:33:59,336 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 16:33:59,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 2 predicate places. [2024-06-27 16:33:59,339 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 81 flow [2024-06-27 16:33:59,340 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 16:33:59,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:33:59,340 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 16:33:59,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 16:33:59,341 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 16:33:59,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:33:59,341 INFO L85 PathProgramCache]: Analyzing trace with hash 983283916, now seen corresponding path program 2 times [2024-06-27 16:33:59,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:33:59,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88278116] [2024-06-27 16:33:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:33:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:33:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:00,709 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 16:34:00,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:00,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88278116] [2024-06-27 16:34:00,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88278116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:00,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:00,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:34:00,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332202349] [2024-06-27 16:34:00,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:00,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:34:00,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:00,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:34:00,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:34:00,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:34:00,716 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 16:34:00,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:00,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:34:00,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:01,053 INFO L124 PetriNetUnfolderBase]: 194/366 cut-off events. [2024-06-27 16:34:01,053 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-06-27 16:34:01,055 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 1501 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 16:34:01,056 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 33 selfloop transitions, 6 changer transitions 12/55 dead transitions. [2024-06-27 16:34:01,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 55 transitions, 262 flow [2024-06-27 16:34:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:34:01,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:34:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 93 transitions. [2024-06-27 16:34:01,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-27 16:34:01,058 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 81 flow. Second operand 6 states and 93 transitions. [2024-06-27 16:34:01,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 55 transitions, 262 flow [2024-06-27 16:34:01,059 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 16:34:01,059 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 92 flow [2024-06-27 16:34:01,060 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 16:34:01,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 16:34:01,060 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 92 flow [2024-06-27 16:34:01,061 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 16:34:01,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:01,061 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 16:34:01,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 16:34:01,061 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 16:34:01,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:01,062 INFO L85 PathProgramCache]: Analyzing trace with hash 376897736, now seen corresponding path program 3 times [2024-06-27 16:34:01,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:01,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620662993] [2024-06-27 16:34:01,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:01,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:02,768 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 16:34:02,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:02,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620662993] [2024-06-27 16:34:02,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620662993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:02,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:02,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:34:02,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727939606] [2024-06-27 16:34:02,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:02,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:34:02,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:02,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:34:02,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:34:02,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:34:02,777 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 16:34:02,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:02,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:34:02,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:03,004 INFO L124 PetriNetUnfolderBase]: 189/370 cut-off events. [2024-06-27 16:34:03,004 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2024-06-27 16:34:03,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 370 events. 189/370 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1573 event pairs, 26 based on Foata normal form. 1/368 useless extension candidates. Maximal degree in co-relation 915. Up to 190 conditions per place. [2024-06-27 16:34:03,008 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 27 selfloop transitions, 6 changer transitions 9/46 dead transitions. [2024-06-27 16:34:03,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 246 flow [2024-06-27 16:34:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 16:34:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 16:34:03,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 76 transitions. [2024-06-27 16:34:03,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.608 [2024-06-27 16:34:03,012 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 92 flow. Second operand 5 states and 76 transitions. [2024-06-27 16:34:03,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 246 flow [2024-06-27 16:34:03,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 46 transitions, 218 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 16:34:03,015 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 101 flow [2024-06-27 16:34:03,016 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=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=101, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2024-06-27 16:34:03,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 16:34:03,017 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 101 flow [2024-06-27 16:34:03,017 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 16:34:03,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:03,017 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 16:34:03,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 16:34:03,017 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 16:34:03,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:03,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1172443060, now seen corresponding path program 4 times [2024-06-27 16:34:03,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:03,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740731318] [2024-06-27 16:34:03,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:03,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:04,298 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 16:34:04,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:04,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740731318] [2024-06-27 16:34:04,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740731318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:04,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:04,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:34:04,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744677205] [2024-06-27 16:34:04,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:04,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:34:04,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:04,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:34:04,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:34:04,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:34:04,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 101 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 16:34:04,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:04,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:34:04,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:04,591 INFO L124 PetriNetUnfolderBase]: 138/270 cut-off events. [2024-06-27 16:34:04,592 INFO L125 PetriNetUnfolderBase]: For 176/176 co-relation queries the response was YES. [2024-06-27 16:34:04,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 695 conditions, 270 events. 138/270 cut-off events. For 176/176 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 987 event pairs, 9 based on Foata normal form. 1/270 useless extension candidates. Maximal degree in co-relation 199. Up to 93 conditions per place. [2024-06-27 16:34:04,593 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 30 selfloop transitions, 5 changer transitions 11/50 dead transitions. [2024-06-27 16:34:04,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 259 flow [2024-06-27 16:34:04,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:34:04,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:34:04,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 88 transitions. [2024-06-27 16:34:04,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-06-27 16:34:04,594 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 101 flow. Second operand 6 states and 88 transitions. [2024-06-27 16:34:04,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 259 flow [2024-06-27 16:34:04,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 250 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 16:34:04,596 INFO L231 Difference]: Finished difference. Result has 43 places, 24 transitions, 105 flow [2024-06-27 16:34:04,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=105, PETRI_PLACES=43, PETRI_TRANSITIONS=24} [2024-06-27 16:34:04,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 12 predicate places. [2024-06-27 16:34:04,597 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 105 flow [2024-06-27 16:34:04,597 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 16:34:04,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:04,598 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 16:34:04,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 16:34:04,598 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 16:34:04,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:04,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1069722780, now seen corresponding path program 5 times [2024-06-27 16:34:04,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:04,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887209622] [2024-06-27 16:34:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:04,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:04,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:05,606 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 16:34:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:05,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887209622] [2024-06-27 16:34:05,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887209622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:05,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:05,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:34:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098928815] [2024-06-27 16:34:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:05,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:34:05,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:34:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:34:05,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:34:05,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 105 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 16:34:05,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:05,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:34:05,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:05,813 INFO L124 PetriNetUnfolderBase]: 85/173 cut-off events. [2024-06-27 16:34:05,813 INFO L125 PetriNetUnfolderBase]: For 218/218 co-relation queries the response was YES. [2024-06-27 16:34:05,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 173 events. 85/173 cut-off events. For 218/218 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 538 event pairs, 5 based on Foata normal form. 1/173 useless extension candidates. Maximal degree in co-relation 471. Up to 69 conditions per place. [2024-06-27 16:34:05,814 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 19 selfloop transitions, 3 changer transitions 15/41 dead transitions. [2024-06-27 16:34:05,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 218 flow [2024-06-27 16:34:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:34:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:34:05,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-06-27 16:34:05,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-27 16:34:05,815 INFO L175 Difference]: Start difference. First operand has 43 places, 24 transitions, 105 flow. Second operand 6 states and 80 transitions. [2024-06-27 16:34:05,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 218 flow [2024-06-27 16:34:05,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 41 transitions, 196 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 16:34:05,817 INFO L231 Difference]: Finished difference. Result has 42 places, 21 transitions, 73 flow [2024-06-27 16:34:05,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=36, 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=73, PETRI_PLACES=42, PETRI_TRANSITIONS=21} [2024-06-27 16:34:05,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-27 16:34:05,818 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 21 transitions, 73 flow [2024-06-27 16:34:05,818 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 16:34:05,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 16:34:05,818 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 16:34:05,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 16:34:05,819 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 16:34:05,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 16:34:05,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1522683396, now seen corresponding path program 6 times [2024-06-27 16:34:05,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 16:34:05,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415633422] [2024-06-27 16:34:05,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 16:34:05,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 16:34:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 16:34:06,835 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 16:34:06,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 16:34:06,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415633422] [2024-06-27 16:34:06,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415633422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 16:34:06,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 16:34:06,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 16:34:06,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93257958] [2024-06-27 16:34:06,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 16:34:06,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 16:34:06,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 16:34:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 16:34:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 16:34:06,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 25 [2024-06-27 16:34:06,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 21 transitions, 73 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 16:34:06,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 16:34:06,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 25 [2024-06-27 16:34:06,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 16:34:07,044 INFO L124 PetriNetUnfolderBase]: 42/89 cut-off events. [2024-06-27 16:34:07,044 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2024-06-27 16:34:07,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 89 events. 42/89 cut-off events. For 90/90 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 238. Up to 54 conditions per place. [2024-06-27 16:34:07,045 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-27 16:34:07,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 26 transitions, 128 flow [2024-06-27 16:34:07,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 16:34:07,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 16:34:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 66 transitions. [2024-06-27 16:34:07,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2024-06-27 16:34:07,046 INFO L175 Difference]: Start difference. First operand has 42 places, 21 transitions, 73 flow. Second operand 6 states and 66 transitions. [2024-06-27 16:34:07,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 26 transitions, 128 flow [2024-06-27 16:34:07,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 114 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 16:34:07,047 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-27 16:34:07,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=53, 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 16:34:07,048 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-27 16:34:07,048 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-27 16:34:07,048 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 16:34:07,050 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-06-27 16:34:07,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-06-27 16:34:07,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 16:34:07,051 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 16:34:07,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 16:34:07,052 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-06-27 16:34:07,054 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 16:34:07,054 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 16:34:07,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 04:34:07 BasicIcfg [2024-06-27 16:34:07,059 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 16:34:07,059 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-06-27 16:34:07,059 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-06-27 16:34:07,059 INFO L274 PluginConnector]: Witness Printer initialized [2024-06-27 16:34:07,060 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 04:33:56" (3/4) ... [2024-06-27 16:34:07,061 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-06-27 16:34:07,064 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-06-27 16:34:07,064 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-06-27 16:34:07,065 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-06-27 16:34:07,069 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 96 nodes and edges [2024-06-27 16:34:07,069 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-06-27 16:34:07,069 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-06-27 16:34:07,070 INFO L896 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-06-27 16:34:07,156 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-06-27 16:34:07,156 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-06-27 16:34:07,156 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-06-27 16:34:07,157 INFO L158 Benchmark]: Toolchain (without parser) took 12583.39ms. Allocated memory was 134.2MB in the beginning and 654.3MB in the end (delta: 520.1MB). Free memory was 62.7MB in the beginning and 369.3MB in the end (delta: -306.5MB). Peak memory consumption was 214.8MB. Max. memory is 16.1GB. [2024-06-27 16:34:07,157 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory was 94.8MB in the beginning and 94.6MB in the end (delta: 155.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:34:07,157 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.79ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 62.5MB in the beginning and 147.3MB in the end (delta: -84.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-06-27 16:34:07,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.28ms. Allocated memory is still 182.5MB. Free memory was 147.3MB in the beginning and 144.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:34:07,158 INFO L158 Benchmark]: Boogie Preprocessor took 38.04ms. Allocated memory is still 182.5MB. Free memory was 144.2MB in the beginning and 141.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 16:34:07,158 INFO L158 Benchmark]: RCFGBuilder took 1365.69ms. Allocated memory is still 182.5MB. Free memory was 141.1MB in the beginning and 91.8MB in the end (delta: 49.2MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. [2024-06-27 16:34:07,158 INFO L158 Benchmark]: TraceAbstraction took 10781.01ms. Allocated memory was 182.5MB in the beginning and 654.3MB in the end (delta: 471.9MB). Free memory was 90.8MB in the beginning and 374.5MB in the end (delta: -283.7MB). Peak memory consumption was 191.3MB. Max. memory is 16.1GB. [2024-06-27 16:34:07,159 INFO L158 Benchmark]: Witness Printer took 97.32ms. Allocated memory is still 654.3MB. Free memory was 374.5MB in the beginning and 369.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 16:34:07,160 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 134.2MB. Free memory was 94.8MB in the beginning and 94.6MB in the end (delta: 155.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.79ms. Allocated memory was 134.2MB in the beginning and 182.5MB in the end (delta: 48.2MB). Free memory was 62.5MB in the beginning and 147.3MB in the end (delta: -84.8MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.28ms. Allocated memory is still 182.5MB. Free memory was 147.3MB in the beginning and 144.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.04ms. Allocated memory is still 182.5MB. Free memory was 144.2MB in the beginning and 141.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1365.69ms. Allocated memory is still 182.5MB. Free memory was 141.1MB in the beginning and 91.8MB in the end (delta: 49.2MB). Peak memory consumption was 98.6MB. Max. memory is 16.1GB. * TraceAbstraction took 10781.01ms. Allocated memory was 182.5MB in the beginning and 654.3MB in the end (delta: 471.9MB). Free memory was 90.8MB in the beginning and 374.5MB in the end (delta: -283.7MB). Peak memory consumption was 191.3MB. Max. memory is 16.1GB. * Witness Printer took 97.32ms. Allocated memory is still 654.3MB. Free memory was 374.5MB in the beginning and 369.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: 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: 10.7s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 209 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 209 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 476 IncrementalHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 0 mSDtfsCounter, 476 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=4, InterpolantAutomatonStates: 35, 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, 0.4s SatisfiabilityAnalysisTime, 8.2s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 4128 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 16:34:07,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE