./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-2.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/parallel-ticket-2.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/parallel-ticket-2.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-ticket-2.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 21:00:38,665 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 21:00:38,732 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 21:00:38,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 21:00:38,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 21:00:38,777 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 21:00:38,778 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 21:00:38,778 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 21:00:38,779 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 21:00:38,783 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 21:00:38,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 21:00:38,783 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 21:00:38,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 21:00:38,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 21:00:38,786 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 21:00:38,786 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 21:00:38,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 21:00:38,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 21:00:38,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 21:00:38,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 21:00:38,788 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 21:00:38,788 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 21:00:38,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 21:00:38,789 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 21:00:38,789 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 21:00:38,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 21:00:38,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 21:00:38,790 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 21:00:38,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 21:00:38,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 21:00:38,792 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 21:00:38,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 21:00:38,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:00:38,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 21:00:38,793 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 21:00:38,793 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 21:00:38,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 21:00:38,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 21:00:38,793 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 21:00:38,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 21:00:38,794 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 21:00:38,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 21:00:38,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 21:00:38,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 21:00:39,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 21:00:39,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 21:00:39,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 21:00:39,090 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 21:00:39,091 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 21:00:39,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/parallel-ticket-2.wvr.yml/witness.yml [2024-06-03 21:00:39,211 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 21:00:39,211 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 21:00:39,212 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2024-06-03 21:00:40,379 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 21:00:40,613 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 21:00:40,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-2.wvr.c [2024-06-03 21:00:40,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935e75379/559a202afef5499a8b01d6ad379976e4/FLAG260509285 [2024-06-03 21:00:40,637 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/935e75379/559a202afef5499a8b01d6ad379976e4 [2024-06-03 21:00:40,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 21:00:40,639 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 21:00:40,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 21:00:40,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 21:00:40,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 21:00:40,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:00:39" (1/2) ... [2024-06-03 21:00:40,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fff7a29 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:40, skipping insertion in model container [2024-06-03 21:00:40,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:00:39" (1/2) ... [2024-06-03 21:00:40,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@16459cf7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 09:00:40, skipping insertion in model container [2024-06-03 21:00:40,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:00:40" (2/2) ... [2024-06-03 21:00:40,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fff7a29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:40, skipping insertion in model container [2024-06-03 21:00:40,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 09:00:40" (2/2) ... [2024-06-03 21:00:40,653 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 21:00:40,671 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 21:00:40,673 INFO L97 edCorrectnessWitness]: Location invariant before [L98-L98] ! multithreaded || ((((((((2147483648LL + (long long )b) + (long long )s >= 0LL && (2147483648LL + (long long )b) + (long long )x >= 0LL) && (4294967296LL + (long long )s) + (long long )x >= 0LL) && (2147483649LL - (long long )b) + (long long )s >= 0LL) && (2147483649LL - (long long )b) + (long long )x >= 0LL) && (2147483647LL + (long long )b) - (long long )x >= 0LL) && (4294967295LL + (long long )s) - (long long )x >= 0LL) && (2147483648LL - (long long )b) - (long long )x >= 0LL) [2024-06-03 21:00:40,673 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] ! multithreaded || ((((((((2147483648LL + (long long )b) + (long long )s >= 0LL && (2147483648LL + (long long )b) + (long long )x >= 0LL) && (4294967296LL + (long long )s) + (long long )x >= 0LL) && (2147483649LL - (long long )b) + (long long )s >= 0LL) && (2147483649LL - (long long )b) + (long long )x >= 0LL) && (2147483647LL + (long long )b) - (long long )x >= 0LL) && (4294967295LL + (long long )s) - (long long )x >= 0LL) && (2147483648LL - (long long )b) - (long long )x >= 0LL) [2024-06-03 21:00:40,673 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 21:00:40,673 INFO L106 edCorrectnessWitness]: ghost_update [L96-L96] multithreaded = 1; [2024-06-03 21:00:40,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 21:00:40,908 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:00:40,918 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 21:00:41,004 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 21:00:41,023 INFO L206 MainTranslator]: Completed translation [2024-06-03 21:00:41,024 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41 WrapperNode [2024-06-03 21:00:41,024 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 21:00:41,025 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 21:00:41,025 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 21:00:41,025 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 21:00:41,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,061 INFO L138 Inliner]: procedures = 20, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 119 [2024-06-03 21:00:41,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 21:00:41,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 21:00:41,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 21:00:41,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 21:00:41,077 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,093 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 21:00:41,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,093 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,100 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,101 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,102 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,104 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 21:00:41,105 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 21:00:41,105 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 21:00:41,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 21:00:41,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (1/1) ... [2024-06-03 21:00:41,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 21:00:41,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 21:00:41,133 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 21:00:41,140 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 21:00:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 21:00:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 21:00:41,173 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 21:00:41,173 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 21:00:41,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 21:00:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 21:00:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 21:00:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 21:00:41,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 21:00:41,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 21:00:41,177 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 21:00:41,252 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 21:00:41,254 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 21:00:41,467 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 21:00:41,467 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 21:00:41,631 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 21:00:41,632 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 21:00:41,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:00:41 BoogieIcfgContainer [2024-06-03 21:00:41,632 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 21:00:41,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 21:00:41,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 21:00:41,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 21:00:41,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 09:00:39" (1/4) ... [2024-06-03 21:00:41,638 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd15007 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 09:00:41, skipping insertion in model container [2024-06-03 21:00:41,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 09:00:40" (2/4) ... [2024-06-03 21:00:41,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd15007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:00:41, skipping insertion in model container [2024-06-03 21:00:41,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 09:00:41" (3/4) ... [2024-06-03 21:00:41,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fd15007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 09:00:41, skipping insertion in model container [2024-06-03 21:00:41,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 09:00:41" (4/4) ... [2024-06-03 21:00:41,640 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2024-06-03 21:00:41,658 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 21:00:41,658 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 21:00:41,658 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 21:00:41,709 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-03 21:00:41,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 68 flow [2024-06-03 21:00:41,762 INFO L124 PetriNetUnfolderBase]: 0/25 cut-off events. [2024-06-03 21:00:41,763 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 21:00:41,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 0/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 28 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-06-03 21:00:41,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 68 flow [2024-06-03 21:00:41,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-03 21:00:41,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 21:00:41,786 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;@24f911fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 21:00:41,786 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 21:00:41,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 21:00:41,791 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 21:00:41,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 21:00:41,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:41,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 21:00:41,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:00:41,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:41,806 INFO L85 PathProgramCache]: Analyzing trace with hash -110728884, now seen corresponding path program 1 times [2024-06-03 21:00:41,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:41,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582812472] [2024-06-03 21:00:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:41,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:42,264 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 21:00:42,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582812472] [2024-06-03 21:00:42,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582812472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:42,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:42,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 21:00:42,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877544035] [2024-06-03 21:00:42,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:42,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 21:00:42,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 21:00:42,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 21:00:42,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-06-03 21:00:42,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21:00:42,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:42,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-06-03 21:00:42,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:42,462 INFO L124 PetriNetUnfolderBase]: 113/218 cut-off events. [2024-06-03 21:00:42,463 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-03 21:00:42,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 218 events. 113/218 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 707 event pairs, 47 based on Foata normal form. 9/223 useless extension candidates. Maximal degree in co-relation 434. Up to 163 conditions per place. [2024-06-03 21:00:42,471 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 26 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-03 21:00:42,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 31 transitions, 129 flow [2024-06-03 21:00:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 21:00:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 21:00:42,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2024-06-03 21:00:42,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5679012345679012 [2024-06-03 21:00:42,485 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 46 transitions. [2024-06-03 21:00:42,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 31 transitions, 129 flow [2024-06-03 21:00:42,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 31 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 21:00:42,488 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-03 21:00:42,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-03 21:00:42,493 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-03 21:00:42,494 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-03 21:00:42,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21:00:42,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:42,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:42,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 21:00:42,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:00:42,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:42,498 INFO L85 PathProgramCache]: Analyzing trace with hash 150545817, now seen corresponding path program 1 times [2024-06-03 21:00:42,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:42,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472831722] [2024-06-03 21:00:42,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:42,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:42,675 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 21:00:42,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:42,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472831722] [2024-06-03 21:00:42,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472831722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:42,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:42,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:00:42,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484692930] [2024-06-03 21:00:42,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:42,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:00:42,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:00:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:00:42,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 27 [2024-06-03 21:00:42,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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 21:00:42,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:42,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 27 [2024-06-03 21:00:42,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:42,912 INFO L124 PetriNetUnfolderBase]: 159/309 cut-off events. [2024-06-03 21:00:42,912 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2024-06-03 21:00:42,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 309 events. 159/309 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1063 event pairs, 62 based on Foata normal form. 26/335 useless extension candidates. Maximal degree in co-relation 697. Up to 112 conditions per place. [2024-06-03 21:00:42,919 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 33 selfloop transitions, 8 changer transitions 7/48 dead transitions. [2024-06-03 21:00:42,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 48 transitions, 224 flow [2024-06-03 21:00:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:00:42,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:00:42,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 65 transitions. [2024-06-03 21:00:42,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-03 21:00:42,922 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 5 states and 65 transitions. [2024-06-03 21:00:42,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 48 transitions, 224 flow [2024-06-03 21:00:42,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 48 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 21:00:42,925 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 110 flow [2024-06-03 21:00:42,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=110, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2024-06-03 21:00:42,926 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2024-06-03 21:00:42,927 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 110 flow [2024-06-03 21:00:42,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 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 21:00:42,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:42,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:42,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 21:00:42,928 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:00:42,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:42,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1155729050, now seen corresponding path program 1 times [2024-06-03 21:00:42,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:42,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699805228] [2024-06-03 21:00:42,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:42,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:42,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:43,008 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 21:00:43,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:43,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699805228] [2024-06-03 21:00:43,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699805228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:43,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:43,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 21:00:43,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028100031] [2024-06-03 21:00:43,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:43,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:00:43,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:43,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:00:43,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:00:43,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-06-03 21:00:43,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 110 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:43,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:43,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-06-03 21:00:43,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:43,101 INFO L124 PetriNetUnfolderBase]: 87/214 cut-off events. [2024-06-03 21:00:43,102 INFO L125 PetriNetUnfolderBase]: For 154/160 co-relation queries the response was YES. [2024-06-03 21:00:43,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 587 conditions, 214 events. 87/214 cut-off events. For 154/160 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 814 event pairs, 19 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 568. Up to 119 conditions per place. [2024-06-03 21:00:43,103 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 18 selfloop transitions, 7 changer transitions 7/39 dead transitions. [2024-06-03 21:00:43,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 39 transitions, 210 flow [2024-06-03 21:00:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:00:43,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:00:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-06-03 21:00:43,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-06-03 21:00:43,106 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 110 flow. Second operand 5 states and 70 transitions. [2024-06-03 21:00:43,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 39 transitions, 210 flow [2024-06-03 21:00:43,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 39 transitions, 203 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 21:00:43,109 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 145 flow [2024-06-03 21:00:43,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-03 21:00:43,110 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 11 predicate places. [2024-06-03 21:00:43,110 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 145 flow [2024-06-03 21:00:43,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:43,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:43,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:43,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 21:00:43,111 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:00:43,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2102761442, now seen corresponding path program 2 times [2024-06-03 21:00:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:43,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395113250] [2024-06-03 21:00:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:43,170 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 21:00:43,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:43,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395113250] [2024-06-03 21:00:43,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395113250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:43,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:43,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 21:00:43,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553115046] [2024-06-03 21:00:43,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:43,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:00:43,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:43,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:00:43,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:00:43,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 27 [2024-06-03 21:00:43,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:43,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:43,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 27 [2024-06-03 21:00:43,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:43,240 INFO L124 PetriNetUnfolderBase]: 28/78 cut-off events. [2024-06-03 21:00:43,241 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-06-03 21:00:43,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 78 events. 28/78 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 8 based on Foata normal form. 4/82 useless extension candidates. Maximal degree in co-relation 210. Up to 43 conditions per place. [2024-06-03 21:00:43,242 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 17 selfloop transitions, 5 changer transitions 0/26 dead transitions. [2024-06-03 21:00:43,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 26 transitions, 151 flow [2024-06-03 21:00:43,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:00:43,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:00:43,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-06-03 21:00:43,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-03 21:00:43,244 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 145 flow. Second operand 5 states and 63 transitions. [2024-06-03 21:00:43,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 26 transitions, 151 flow [2024-06-03 21:00:43,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 118 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-03 21:00:43,246 INFO L231 Difference]: Finished difference. Result has 34 places, 22 transitions, 85 flow [2024-06-03 21:00:43,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=22} [2024-06-03 21:00:43,246 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2024-06-03 21:00:43,247 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 22 transitions, 85 flow [2024-06-03 21:00:43,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 21:00:43,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:43,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:43,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 21:00:43,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:00:43,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:43,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1128787482, now seen corresponding path program 1 times [2024-06-03 21:00:43,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:43,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700307911] [2024-06-03 21:00:43,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:43,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:43,418 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 21:00:43,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:43,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700307911] [2024-06-03 21:00:43,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700307911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:43,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:43,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:00:43,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439626308] [2024-06-03 21:00:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:00:43,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:00:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:00:43,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-06-03 21:00:43,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 22 transitions, 85 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 21:00:43,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:43,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-06-03 21:00:43,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:43,482 INFO L124 PetriNetUnfolderBase]: 41/95 cut-off events. [2024-06-03 21:00:43,483 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-06-03 21:00:43,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 95 events. 41/95 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 182 event pairs, 21 based on Foata normal form. 2/97 useless extension candidates. Maximal degree in co-relation 242. Up to 61 conditions per place. [2024-06-03 21:00:43,484 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 19 selfloop transitions, 5 changer transitions 0/25 dead transitions. [2024-06-03 21:00:43,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 25 transitions, 139 flow [2024-06-03 21:00:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:00:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:00:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 44 transitions. [2024-06-03 21:00:43,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2024-06-03 21:00:43,485 INFO L175 Difference]: Start difference. First operand has 34 places, 22 transitions, 85 flow. Second operand 5 states and 44 transitions. [2024-06-03 21:00:43,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 25 transitions, 139 flow [2024-06-03 21:00:43,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 25 transitions, 132 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 21:00:43,487 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 92 flow [2024-06-03 21:00:43,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=5, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2024-06-03 21:00:43,488 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-03 21:00:43,488 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 92 flow [2024-06-03 21:00:43,488 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 21:00:43,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 21:00:43,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 21:00:43,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 21:00:43,489 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 21:00:43,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 21:00:43,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1059504604, now seen corresponding path program 1 times [2024-06-03 21:00:43,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 21:00:43,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544389222] [2024-06-03 21:00:43,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 21:00:43,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 21:00:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 21:00:43,574 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 21:00:43,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 21:00:43,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544389222] [2024-06-03 21:00:43,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544389222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 21:00:43,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 21:00:43,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 21:00:43,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36483453] [2024-06-03 21:00:43,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 21:00:43,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 21:00:43,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 21:00:43,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 21:00:43,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-03 21:00:43,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-06-03 21:00:43,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 21:00:43,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 21:00:43,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-06-03 21:00:43,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 21:00:43,627 INFO L124 PetriNetUnfolderBase]: 34/80 cut-off events. [2024-06-03 21:00:43,627 INFO L125 PetriNetUnfolderBase]: For 79/83 co-relation queries the response was YES. [2024-06-03 21:00:43,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228 conditions, 80 events. 34/80 cut-off events. For 79/83 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 139 event pairs, 10 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 208. Up to 32 conditions per place. [2024-06-03 21:00:43,628 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2024-06-03 21:00:43,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 24 transitions, 136 flow [2024-06-03 21:00:43,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 21:00:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 21:00:43,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 43 transitions. [2024-06-03 21:00:43,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31851851851851853 [2024-06-03 21:00:43,630 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 92 flow. Second operand 5 states and 43 transitions. [2024-06-03 21:00:43,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 24 transitions, 136 flow [2024-06-03 21:00:43,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 24 transitions, 116 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-03 21:00:43,631 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2024-06-03 21:00:43,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2024-06-03 21:00:43,632 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2024-06-03 21:00:43,632 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2024-06-03 21:00:43,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 21:00:43,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 21:00:43,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 21:00:43,635 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 21:00:43,636 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 21:00:43,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 21:00:43,636 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-06-03 21:00:43,639 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 21:00:43,639 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 21:00:43,643 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 21:00:43,643 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 21:00:43,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 09:00:43 BasicIcfg [2024-06-03 21:00:43,644 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 21:00:43,645 INFO L158 Benchmark]: Toolchain (without parser) took 3005.49ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 78.1MB in the beginning and 117.4MB in the end (delta: -39.3MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2024-06-03 21:00:43,645 INFO L158 Benchmark]: Witness Parser took 0.21ms. Allocated memory is still 151.0MB. Free memory is still 105.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:00:43,645 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory was 122.9MB in the beginning and 122.8MB in the end (delta: 140.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:00:43,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.18ms. Allocated memory is still 151.0MB. Free memory was 77.8MB in the beginning and 113.6MB in the end (delta: -35.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-06-03 21:00:43,646 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.46ms. Allocated memory is still 151.0MB. Free memory was 113.6MB in the beginning and 111.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:00:43,647 INFO L158 Benchmark]: Boogie Preprocessor took 42.67ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 109.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 21:00:43,647 INFO L158 Benchmark]: RCFGBuilder took 527.41ms. Allocated memory is still 151.0MB. Free memory was 109.5MB in the beginning and 77.5MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-03 21:00:43,647 INFO L158 Benchmark]: TraceAbstraction took 2009.79ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 76.5MB in the beginning and 117.4MB in the end (delta: -41.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 21:00:43,649 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.21ms. Allocated memory is still 151.0MB. Free memory is still 105.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 151.0MB. Free memory was 122.9MB in the beginning and 122.8MB in the end (delta: 140.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.18ms. Allocated memory is still 151.0MB. Free memory was 77.8MB in the beginning and 113.6MB in the end (delta: -35.8MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.46ms. Allocated memory is still 151.0MB. Free memory was 113.6MB in the beginning and 111.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.67ms. Allocated memory is still 151.0MB. Free memory was 111.6MB in the beginning and 109.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 527.41ms. Allocated memory is still 151.0MB. Free memory was 109.5MB in the beginning and 77.5MB in the end (delta: 32.0MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2009.79ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 76.5MB in the beginning and 117.4MB in the end (delta: -41.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 97]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 98]: 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 5 procedures, 43 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 147 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 16 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 473 IncrementalHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 26 mSDtfsCounter, 473 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=3, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 473 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 21:00:43,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE