./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/mutex-meet/chl-sre-trans.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/chl-sre-trans.wvr.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 20:58:21,896 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 20:58:21,975 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 20:58:21,980 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 20:58:21,981 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 20:58:22,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 20:58:22,103 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 20:58:22,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 20:58:22,104 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 20:58:22,107 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 20:58:22,108 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 20:58:22,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 20:58:22,109 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 20:58:22,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 20:58:22,110 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 20:58:22,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 20:58:22,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 20:58:22,111 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 20:58:22,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 20:58:22,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 20:58:22,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 20:58:22,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 20:58:22,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 20:58:22,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 20:58:22,114 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 20:58:22,114 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 20:58:22,114 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 20:58:22,115 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 20:58:22,115 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 20:58:22,115 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 20:58:22,115 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 20:58:22,116 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 20:58:22,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:58:22,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 20:58:22,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 20:58:22,117 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 20:58:22,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 20:58:22,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 20:58:22,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 20:58:22,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 20:58:22,118 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 20:58:22,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 20:58:22,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 20:58:22,119 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 20:58:22,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 20:58:22,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 20:58:22,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 20:58:22,372 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 20:58:22,373 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 20:58:22,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2024-06-03 20:58:23,569 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 20:58:23,746 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 20:58:23,747 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2024-06-03 20:58:23,754 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403f74ec9/c5e8c68c850b48f19f10f5653afcaa7b/FLAG450531f95 [2024-06-03 20:58:23,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/403f74ec9/c5e8c68c850b48f19f10f5653afcaa7b [2024-06-03 20:58:23,768 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 20:58:23,770 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 20:58:23,770 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/chl-sre-trans.wvr.yml/witness.yml [2024-06-03 20:58:23,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 20:58:23,861 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 20:58:23,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 20:58:23,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 20:58:23,867 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 20:58:23,867 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:58:23" (1/2) ... [2024-06-03 20:58:23,873 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9f6779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:58:23, skipping insertion in model container [2024-06-03 20:58:23,873 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 08:58:23" (1/2) ... [2024-06-03 20:58:23,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4d5194e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 08:58:23, skipping insertion in model container [2024-06-03 20:58:23,875 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:58:23" (2/2) ... [2024-06-03 20:58:23,875 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c9f6779 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:23, skipping insertion in model container [2024-06-03 20:58:23,875 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:58:23" (2/2) ... [2024-06-03 20:58:23,875 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 20:58:23,891 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 20:58:23,892 INFO L97 edCorrectnessWitness]: Location invariant before [L71-L71] ((! multithreaded || ((((-128 <= result_5 && -1 <= result_5) && result_5 <= 1) && result_5 <= 127) && ((result_5 == -1 || result_5 == 0) || result_5 == 1))) && (! multithreaded || ((((-128 <= result_4 && -1 <= result_4) && result_4 <= 1) && result_4 <= 127) && ((result_4 == -1 || result_4 == 0) || result_4 == 1)))) && (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) [2024-06-03 20:58:23,892 INFO L97 edCorrectnessWitness]: Location invariant before [L69-L69] ((! multithreaded || ((((-128 <= result_5 && -1 <= result_5) && result_5 <= 1) && result_5 <= 127) && ((result_5 == -1 || result_5 == 0) || result_5 == 1))) && (! multithreaded || ((((-128 <= result_4 && -1 <= result_4) && result_4 <= 1) && result_4 <= 127) && ((result_4 == -1 || result_4 == 0) || result_4 == 1)))) && (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) [2024-06-03 20:58:23,892 INFO L97 edCorrectnessWitness]: Location invariant before [L70-L70] ((! multithreaded || ((((-128 <= result_5 && -1 <= result_5) && result_5 <= 1) && result_5 <= 127) && ((result_5 == -1 || result_5 == 0) || result_5 == 1))) && (! multithreaded || ((((-128 <= result_4 && -1 <= result_4) && result_4 <= 1) && result_4 <= 127) && ((result_4 == -1 || result_4 == 0) || result_4 == 1)))) && (! multithreaded || ((((-128 <= result_3 && -1 <= result_3) && result_3 <= 1) && result_3 <= 127) && ((result_3 == -1 || result_3 == 0) || result_3 == 1))) [2024-06-03 20:58:23,893 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 20:58:23,893 INFO L106 edCorrectnessWitness]: ghost_update [L68-L68] multithreaded = 1; [2024-06-03 20:58:23,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 20:58:24,069 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:58:24,084 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 20:58:24,171 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 20:58:24,192 INFO L206 MainTranslator]: Completed translation [2024-06-03 20:58:24,193 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24 WrapperNode [2024-06-03 20:58:24,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 20:58:24,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 20:58:24,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 20:58:24,197 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 20:58:24,203 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,210 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,231 INFO L138 Inliner]: procedures = 21, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2024-06-03 20:58:24,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 20:58:24,233 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 20:58:24,233 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 20:58:24,233 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 20:58:24,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,254 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]. [2024-06-03 20:58:24,254 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,254 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,267 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 20:58:24,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 20:58:24,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 20:58:24,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 20:58:24,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (1/1) ... [2024-06-03 20:58:24,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 20:58:24,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 20:58:24,294 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) [2024-06-03 20:58:24,297 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 [2024-06-03 20:58:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 20:58:24,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 20:58:24,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 20:58:24,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 20:58:24,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 20:58:24,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 20:58:24,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 20:58:24,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 20:58:24,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 20:58:24,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 20:58:24,329 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 20:58:24,403 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 20:58:24,405 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 20:58:24,613 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 20:58:24,613 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 20:58:24,710 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 20:58:24,710 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 20:58:24,711 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:58:24 BoogieIcfgContainer [2024-06-03 20:58:24,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 20:58:24,713 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 20:58:24,713 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 20:58:24,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 20:58:24,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 08:58:23" (1/4) ... [2024-06-03 20:58:24,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de766e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 08:58:24, skipping insertion in model container [2024-06-03 20:58:24,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 08:58:23" (2/4) ... [2024-06-03 20:58:24,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de766e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:58:24, skipping insertion in model container [2024-06-03 20:58:24,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 08:58:24" (3/4) ... [2024-06-03 20:58:24,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3de766e3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 08:58:24, skipping insertion in model container [2024-06-03 20:58:24,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 08:58:24" (4/4) ... [2024-06-03 20:58:24,720 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2024-06-03 20:58:24,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 20:58:24,736 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-03 20:58:24,736 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 20:58:24,775 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-03 20:58:24,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 25 transitions, 71 flow [2024-06-03 20:58:24,831 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-06-03 20:58:24,832 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 20:58:24,833 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 10 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-03 20:58:24,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 25 transitions, 71 flow [2024-06-03 20:58:24,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 27 places, 17 transitions, 43 flow [2024-06-03 20:58:24,844 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 20:58:24,850 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=false, 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;@46871894, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 20:58:24,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-03 20:58:24,854 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 20:58:24,857 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-03 20:58:24,857 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 20:58:24,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:24,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 20:58:24,858 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:24,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:24,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1559409213, now seen corresponding path program 1 times [2024-06-03 20:58:24,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:24,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221089324] [2024-06-03 20:58:24,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:24,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:25,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:25,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221089324] [2024-06-03 20:58:25,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221089324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:25,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:25,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 20:58:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090410141] [2024-06-03 20:58:25,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:25,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 20:58:25,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:25,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 20:58:25,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 20:58:25,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:25,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-06-03 20:58:25,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:25,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:25,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:25,436 INFO L124 PetriNetUnfolderBase]: 43/91 cut-off events. [2024-06-03 20:58:25,436 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-03 20:58:25,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 91 events. 43/91 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 219 event pairs, 8 based on Foata normal form. 1/88 useless extension candidates. Maximal degree in co-relation 186. Up to 81 conditions per place. [2024-06-03 20:58:25,439 INFO L140 encePairwiseOnDemand]: 18/25 looper letters, 23 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2024-06-03 20:58:25,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 27 transitions, 123 flow [2024-06-03 20:58:25,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:58:25,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:58:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-06-03 20:58:25,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-03 20:58:25,451 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 42 transitions. [2024-06-03 20:58:25,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 27 transitions, 123 flow [2024-06-03 20:58:25,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 27 transitions, 118 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 20:58:25,456 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 70 flow [2024-06-03 20:58:25,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2024-06-03 20:58:25,460 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2024-06-03 20:58:25,460 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 70 flow [2024-06-03 20:58:25,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2024-06-03 20:58:25,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:25,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:25,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 20:58:25,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:25,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:25,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1097045940, now seen corresponding path program 1 times [2024-06-03 20:58:25,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:25,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501433969] [2024-06-03 20:58:25,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:25,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:25,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:25,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501433969] [2024-06-03 20:58:25,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501433969] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:25,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:25,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:58:25,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725549470] [2024-06-03 20:58:25,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:25,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:58:25,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:58:25,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:58:25,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:25,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-06-03 20:58:25,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:25,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:25,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:25,789 INFO L124 PetriNetUnfolderBase]: 40/85 cut-off events. [2024-06-03 20:58:25,790 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-06-03 20:58:25,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 85 events. 40/85 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 189 event pairs, 9 based on Foata normal form. 3/88 useless extension candidates. Maximal degree in co-relation 244. Up to 60 conditions per place. [2024-06-03 20:58:25,793 INFO L140 encePairwiseOnDemand]: 19/25 looper letters, 20 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2024-06-03 20:58:25,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 134 flow [2024-06-03 20:58:25,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:58:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:58:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2024-06-03 20:58:25,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-03 20:58:25,797 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 70 flow. Second operand 3 states and 38 transitions. [2024-06-03 20:58:25,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 134 flow [2024-06-03 20:58:25,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:58:25,800 INFO L231 Difference]: Finished difference. Result has 28 places, 21 transitions, 93 flow [2024-06-03 20:58:25,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=28, PETRI_TRANSITIONS=21} [2024-06-03 20:58:25,801 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2024-06-03 20:58:25,801 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 21 transitions, 93 flow [2024-06-03 20:58:25,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2024-06-03 20:58:25,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:25,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:25,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 20:58:25,803 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:25,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1678131144, now seen corresponding path program 1 times [2024-06-03 20:58:25,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:25,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528073244] [2024-06-03 20:58:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:25,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:26,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:26,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528073244] [2024-06-03 20:58:26,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528073244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:26,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:26,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:58:26,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457549874] [2024-06-03 20:58:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:26,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:58:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:58:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:58:26,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:26,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-06-03 20:58:26,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:26,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:26,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:26,206 INFO L124 PetriNetUnfolderBase]: 37/80 cut-off events. [2024-06-03 20:58:26,206 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-06-03 20:58:26,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 80 events. 37/80 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 173 event pairs, 5 based on Foata normal form. 2/82 useless extension candidates. Maximal degree in co-relation 259. Up to 61 conditions per place. [2024-06-03 20:58:26,208 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 25 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2024-06-03 20:58:26,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 30 transitions, 181 flow [2024-06-03 20:58:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:58:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:58:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-06-03 20:58:26,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-03 20:58:26,210 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 93 flow. Second operand 3 states and 40 transitions. [2024-06-03 20:58:26,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 30 transitions, 181 flow [2024-06-03 20:58:26,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:58:26,213 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 121 flow [2024-06-03 20:58:26,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2024-06-03 20:58:26,215 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2024-06-03 20:58:26,215 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 121 flow [2024-06-03 20:58:26,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 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) [2024-06-03 20:58:26,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:26,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:26,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 20:58:26,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:26,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:26,216 INFO L85 PathProgramCache]: Analyzing trace with hash 482457215, now seen corresponding path program 1 times [2024-06-03 20:58:26,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:26,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714965572] [2024-06-03 20:58:26,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:26,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:26,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:26,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714965572] [2024-06-03 20:58:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714965572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:26,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:26,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:58:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512935797] [2024-06-03 20:58:26,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:26,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:58:26,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:26,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:58:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:58:26,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:26,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 121 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-06-03 20:58:26,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:26,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:26,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:26,550 INFO L124 PetriNetUnfolderBase]: 36/77 cut-off events. [2024-06-03 20:58:26,550 INFO L125 PetriNetUnfolderBase]: For 97/97 co-relation queries the response was YES. [2024-06-03 20:58:26,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 77 events. 36/77 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 147 event pairs, 15 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 279. Up to 49 conditions per place. [2024-06-03 20:58:26,553 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 18 selfloop transitions, 5 changer transitions 0/23 dead transitions. [2024-06-03 20:58:26,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 23 transitions, 161 flow [2024-06-03 20:58:26,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:58:26,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:58:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2024-06-03 20:58:26,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266666666666667 [2024-06-03 20:58:26,556 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 121 flow. Second operand 3 states and 32 transitions. [2024-06-03 20:58:26,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 23 transitions, 161 flow [2024-06-03 20:58:26,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 23 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:58:26,559 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 125 flow [2024-06-03 20:58:26,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2024-06-03 20:58:26,561 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 4 predicate places. [2024-06-03 20:58:26,561 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 125 flow [2024-06-03 20:58:26,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2024-06-03 20:58:26,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:26,561 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:26,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 20:58:26,562 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:26,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:26,563 INFO L85 PathProgramCache]: Analyzing trace with hash -215801447, now seen corresponding path program 1 times [2024-06-03 20:58:26,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:26,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638714589] [2024-06-03 20:58:26,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:26,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:26,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:26,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:26,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638714589] [2024-06-03 20:58:26,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638714589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:26,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:26,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 20:58:26,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842363523] [2024-06-03 20:58:26,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:26,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 20:58:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:26,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 20:58:26,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-03 20:58:26,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:26,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-06-03 20:58:26,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:26,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:26,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:26,762 INFO L124 PetriNetUnfolderBase]: 34/74 cut-off events. [2024-06-03 20:58:26,762 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2024-06-03 20:58:26,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 74 events. 34/74 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 158 event pairs, 1 based on Foata normal form. 1/75 useless extension candidates. Maximal degree in co-relation 268. Up to 61 conditions per place. [2024-06-03 20:58:26,764 INFO L140 encePairwiseOnDemand]: 21/25 looper letters, 26 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2024-06-03 20:58:26,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 217 flow [2024-06-03 20:58:26,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:58:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:58:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2024-06-03 20:58:26,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667 [2024-06-03 20:58:26,766 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 125 flow. Second operand 3 states and 38 transitions. [2024-06-03 20:58:26,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 217 flow [2024-06-03 20:58:26,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 207 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:58:26,771 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 148 flow [2024-06-03 20:58:26,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2024-06-03 20:58:26,776 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2024-06-03 20:58:26,776 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 148 flow [2024-06-03 20:58:26,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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) [2024-06-03 20:58:26,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:26,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:26,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 20:58:26,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:26,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:26,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1900088648, now seen corresponding path program 1 times [2024-06-03 20:58:26,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:26,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332106242] [2024-06-03 20:58:26,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:26,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:27,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:27,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332106242] [2024-06-03 20:58:27,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332106242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:27,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:27,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:58:27,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208576038] [2024-06-03 20:58:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:27,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:58:27,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:58:27,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:58:27,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:27,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-06-03 20:58:27,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:27,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:27,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:27,123 INFO L124 PetriNetUnfolderBase]: 33/72 cut-off events. [2024-06-03 20:58:27,123 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2024-06-03 20:58:27,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 72 events. 33/72 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 9 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 291. Up to 43 conditions per place. [2024-06-03 20:58:27,124 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 23 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2024-06-03 20:58:27,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 214 flow [2024-06-03 20:58:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:58:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:58:27,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 34 transitions. [2024-06-03 20:58:27,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4533333333333333 [2024-06-03 20:58:27,126 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 148 flow. Second operand 3 states and 34 transitions. [2024-06-03 20:58:27,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 214 flow [2024-06-03 20:58:27,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 209 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 20:58:27,128 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 160 flow [2024-06-03 20:58:27,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2024-06-03 20:58:27,128 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-06-03 20:58:27,129 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 160 flow [2024-06-03 20:58:27,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-06-03 20:58:27,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:27,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:27,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 20:58:27,130 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:27,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:27,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1900089609, now seen corresponding path program 1 times [2024-06-03 20:58:27,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:27,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190659610] [2024-06-03 20:58:27,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:27,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:27,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:27,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:27,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190659610] [2024-06-03 20:58:27,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190659610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:27,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:27,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:58:27,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963006676] [2024-06-03 20:58:27,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:27,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:58:27,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:58:27,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:58:27,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:27,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-06-03 20:58:27,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:27,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:27,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:27,631 INFO L124 PetriNetUnfolderBase]: 34/75 cut-off events. [2024-06-03 20:58:27,631 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-06-03 20:58:27,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 75 events. 34/75 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 174 event pairs, 2 based on Foata normal form. 1/76 useless extension candidates. Maximal degree in co-relation 316. Up to 46 conditions per place. [2024-06-03 20:58:27,632 INFO L140 encePairwiseOnDemand]: 20/25 looper letters, 28 selfloop transitions, 9 changer transitions 0/37 dead transitions. [2024-06-03 20:58:27,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 284 flow [2024-06-03 20:58:27,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:58:27,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:58:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 48 transitions. [2024-06-03 20:58:27,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48 [2024-06-03 20:58:27,634 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 160 flow. Second operand 4 states and 48 transitions. [2024-06-03 20:58:27,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 284 flow [2024-06-03 20:58:27,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 20:58:27,636 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 185 flow [2024-06-03 20:58:27,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2024-06-03 20:58:27,637 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 9 predicate places. [2024-06-03 20:58:27,637 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 185 flow [2024-06-03 20:58:27,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-06-03 20:58:27,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:27,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:27,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 20:58:27,638 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:27,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1900436499, now seen corresponding path program 2 times [2024-06-03 20:58:27,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:27,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223766940] [2024-06-03 20:58:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:27,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:27,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:27,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223766940] [2024-06-03 20:58:27,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223766940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:27,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:27,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 20:58:27,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49186644] [2024-06-03 20:58:27,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:27,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:58:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:58:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:58:27,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:27,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 185 flow. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-06-03 20:58:27,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:27,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:27,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:27,864 INFO L124 PetriNetUnfolderBase]: 33/73 cut-off events. [2024-06-03 20:58:27,864 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2024-06-03 20:58:27,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 73 events. 33/73 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 7 based on Foata normal form. 1/74 useless extension candidates. Maximal degree in co-relation 337. Up to 45 conditions per place. [2024-06-03 20:58:27,866 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 26 selfloop transitions, 6 changer transitions 0/32 dead transitions. [2024-06-03 20:58:27,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 267 flow [2024-06-03 20:58:27,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 20:58:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 20:58:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-06-03 20:58:27,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-06-03 20:58:27,868 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 185 flow. Second operand 3 states and 37 transitions. [2024-06-03 20:58:27,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 267 flow [2024-06-03 20:58:27,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 32 transitions, 251 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-03 20:58:27,870 INFO L231 Difference]: Finished difference. Result has 38 places, 25 transitions, 189 flow [2024-06-03 20:58:27,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=35, 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=3, PETRI_FLOW=189, PETRI_PLACES=38, PETRI_TRANSITIONS=25} [2024-06-03 20:58:27,872 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2024-06-03 20:58:27,872 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 25 transitions, 189 flow [2024-06-03 20:58:27,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 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) [2024-06-03 20:58:27,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 20:58:27,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:27,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 20:58:27,873 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 20:58:27,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 20:58:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1226794182, now seen corresponding path program 1 times [2024-06-03 20:58:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 20:58:27,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667664888] [2024-06-03 20:58:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 20:58:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 20:58:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 20:58:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 20:58:28,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 20:58:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667664888] [2024-06-03 20:58:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667664888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 20:58:28,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 20:58:28,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 20:58:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102612813] [2024-06-03 20:58:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 20:58:28,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 20:58:28,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 20:58:28,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 20:58:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 20:58:28,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 25 [2024-06-03 20:58:28,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 25 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-06-03 20:58:28,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 20:58:28,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 25 [2024-06-03 20:58:28,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 20:58:28,398 INFO L124 PetriNetUnfolderBase]: 33/72 cut-off events. [2024-06-03 20:58:28,398 INFO L125 PetriNetUnfolderBase]: For 276/276 co-relation queries the response was YES. [2024-06-03 20:58:28,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 72 events. 33/72 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 154 event pairs, 7 based on Foata normal form. 1/73 useless extension candidates. Maximal degree in co-relation 334. Up to 43 conditions per place. [2024-06-03 20:58:28,399 INFO L140 encePairwiseOnDemand]: 22/25 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-03 20:58:28,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 31 transitions, 251 flow [2024-06-03 20:58:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 20:58:28,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 20:58:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2024-06-03 20:58:28,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-03 20:58:28,400 INFO L175 Difference]: Start difference. First operand has 38 places, 25 transitions, 189 flow. Second operand 4 states and 40 transitions. [2024-06-03 20:58:28,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 31 transitions, 251 flow [2024-06-03 20:58:28,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 31 transitions, 216 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-03 20:58:28,402 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-06-03 20:58:28,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=25, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2024-06-03 20:58:28,403 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2024-06-03 20:58:28,403 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-06-03 20:58:28,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 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) [2024-06-03 20:58:28,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-03 20:58:28,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-03 20:58:28,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-03 20:58:28,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-03 20:58:28,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-03 20:58:28,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-03 20:58:28,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 20:58:28,410 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 20:58:28,413 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 20:58:28,414 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 20:58:28,419 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-03 20:58:28,419 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-03 20:58:28,420 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 08:58:28 BasicIcfg [2024-06-03 20:58:28,420 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 20:58:28,421 INFO L158 Benchmark]: Toolchain (without parser) took 4559.61ms. Allocated memory was 123.7MB in the beginning and 220.2MB in the end (delta: 96.5MB). Free memory was 94.6MB in the beginning and 91.7MB in the end (delta: 2.8MB). Peak memory consumption was 98.4MB. Max. memory is 16.1GB. [2024-06-03 20:58:28,421 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:58:28,421 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 123.7MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:58:28,422 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.06ms. Allocated memory was 123.7MB in the beginning and 178.3MB in the end (delta: 54.5MB). Free memory was 94.4MB in the beginning and 137.9MB in the end (delta: -43.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-03 20:58:28,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.52ms. Allocated memory is still 178.3MB. Free memory was 137.9MB in the beginning and 135.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 20:58:28,422 INFO L158 Benchmark]: Boogie Preprocessor took 34.23ms. Allocated memory is still 178.3MB. Free memory was 135.9MB in the beginning and 134.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 20:58:28,423 INFO L158 Benchmark]: RCFGBuilder took 443.77ms. Allocated memory is still 178.3MB. Free memory was 133.8MB in the beginning and 107.3MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-03 20:58:28,424 INFO L158 Benchmark]: TraceAbstraction took 3706.96ms. Allocated memory was 178.3MB in the beginning and 220.2MB in the end (delta: 41.9MB). Free memory was 106.6MB in the beginning and 91.7MB in the end (delta: 14.8MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2024-06-03 20:58:28,426 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory was 73.1MB in the beginning and 73.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 123.7MB. Free memory is still 52.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.06ms. Allocated memory was 123.7MB in the beginning and 178.3MB in the end (delta: 54.5MB). Free memory was 94.4MB in the beginning and 137.9MB in the end (delta: -43.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.52ms. Allocated memory is still 178.3MB. Free memory was 137.9MB in the beginning and 135.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.23ms. Allocated memory is still 178.3MB. Free memory was 135.9MB in the beginning and 134.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 443.77ms. Allocated memory is still 178.3MB. Free memory was 133.8MB in the beginning and 107.3MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3706.96ms. Allocated memory was 178.3MB in the beginning and 220.2MB in the end (delta: 41.9MB). Free memory was 106.6MB in the beginning and 91.7MB in the end (delta: 14.8MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 69]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 70]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 71]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 35 locations, 6 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: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 249 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 36 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 355 IncrementalHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 36 mSolverCounterUnsat, 5 mSDtfsCounter, 355 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=189occurred in iteration=8, InterpolantAutomatonStates: 29, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 694 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 20:58:28,450 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