./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread/stack_longest-2.i --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/stack_longest-2.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/pthread/stack_longest-2.i ./goblint.2024-05-21_14-57-05.files/mutex-meet/stack_longest-2.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 [2024-06-04 15:59:59,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 15:59:59,953 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 15:59:59,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 15:59:59,959 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 15:59:59,984 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 15:59:59,984 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 15:59:59,985 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 15:59:59,985 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 15:59:59,988 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 15:59:59,988 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 15:59:59,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 15:59:59,989 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 15:59:59,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 15:59:59,990 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 15:59:59,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 15:59:59,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 15:59:59,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 15:59:59,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 15:59:59,992 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 15:59:59,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 15:59:59,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 15:59:59,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 15:59:59,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 15:59:59,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 15:59:59,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 15:59:59,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 15:59:59,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 15:59:59,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 15:59:59,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 15:59:59,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 15:59:59,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 15:59:59,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 15:59:59,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 15:59:59,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 15:59:59,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 15:59:59,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 15:59:59,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 15:59:59,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 15:59:59,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 15:59:59,997 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 15:59:59,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 15:59:59,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 15:59:59,997 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:00:00,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:00:00,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:00:00,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:00:00,231 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:00:00,232 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:00:00,233 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/stack_longest-2.yml/witness.yml [2024-06-04 16:00:00,374 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:00:00,375 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:00:00,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2024-06-04 16:00:01,537 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:00:01,828 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:00:01,828 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2024-06-04 16:00:01,839 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947ead965/b506cca9d2e4409797e9cd770dc312d3/FLAGc902e23f8 [2024-06-04 16:00:01,854 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/947ead965/b506cca9d2e4409797e9cd770dc312d3 [2024-06-04 16:00:01,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:00:01,870 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:00:01,872 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:00:01,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:00:01,877 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:00:01,877 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:00:00" (1/2) ... [2024-06-04 16:00:01,878 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a3aa78 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:01, skipping insertion in model container [2024-06-04 16:00:01,878 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:00:00" (1/2) ... [2024-06-04 16:00:01,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7bde60c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:00:01, skipping insertion in model container [2024-06-04 16:00:01,888 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:00:01" (2/2) ... [2024-06-04 16:00:01,888 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a3aa78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:01, skipping insertion in model container [2024-06-04 16:00:01,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:00:01" (2/2) ... [2024-06-04 16:00:01,894 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:00:01,985 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:00:01,986 INFO L97 edCorrectnessWitness]: Location invariant before [L1023-L1023] ((! multithreaded || (m_locked || flag == (_Bool)0)) && (! multithreaded || (m_locked || ((0LL - (long long )flag) + (long long )top >= 0LL && (long long )flag + (long long )top >= 0LL)))) && (! multithreaded || flag == (_Bool)0) [2024-06-04 16:00:01,986 INFO L97 edCorrectnessWitness]: Location invariant before [L1022-L1022] ((! multithreaded || (m_locked || flag == (_Bool)0)) && (! multithreaded || (m_locked || ((0LL - (long long )flag) + (long long )top >= 0LL && (long long )flag + (long long )top >= 0LL)))) && (! multithreaded || flag == (_Bool)0) [2024-06-04 16:00:01,987 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:00:01,987 INFO L103 edCorrectnessWitness]: ghost_variable m_locked = 0 [2024-06-04 16:00:01,987 INFO L106 edCorrectnessWitness]: ghost_update [L993-L993] m_locked = 1; [2024-06-04 16:00:01,987 INFO L106 edCorrectnessWitness]: ghost_update [L1021-L1021] multithreaded = 1; [2024-06-04 16:00:01,987 INFO L106 edCorrectnessWitness]: ghost_update [L1007-L1007] m_locked = 1; [2024-06-04 16:00:01,988 INFO L106 edCorrectnessWitness]: ghost_update [L1013-L1013] m_locked = 0; [2024-06-04 16:00:01,988 INFO L106 edCorrectnessWitness]: ghost_update [L998-L998] m_locked = 0; [2024-06-04 16:00:02,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:00:02,467 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:00:02,477 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 16:00:02,587 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:00:02,639 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:00:02,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02 WrapperNode [2024-06-04 16:00:02,640 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:00:02,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:00:02,641 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:00:02,641 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:00:02,647 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,711 INFO L138 Inliner]: procedures = 277, calls = 31, calls flagged for inlining = 12, calls inlined = 13, statements flattened = 160 [2024-06-04 16:00:02,711 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:00:02,712 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:00:02,713 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:00:02,713 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:00:02,721 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,736 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,755 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 3, 5]. 50 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 2 writes are split as follows [0, 2, 0]. [2024-06-04 16:00:02,760 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,761 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,772 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,776 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:00:02,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:00:02,777 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:00:02,777 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:00:02,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (1/1) ... [2024-06-04 16:00:02,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:00:02,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:00:02,817 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) [2024-06-04 16:00:02,819 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 [2024-06-04 16:00:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-06-04 16:00:02,847 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-06-04 16:00:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-06-04 16:00:02,848 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-06-04 16:00:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-06-04 16:00:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 16:00:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 16:00:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-06-04 16:00:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 16:00:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 16:00:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-06-04 16:00:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-06-04 16:00:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:00:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:00:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 16:00:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-06-04 16:00:02,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:00:02,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:00:02,854 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:00:03,034 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:00:03,036 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:00:03,247 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:00:03,247 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:00:03,428 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:00:03,428 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-06-04 16:00:03,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:00:03 BoogieIcfgContainer [2024-06-04 16:00:03,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:00:03,430 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:00:03,430 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:00:03,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:00:03,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:00:00" (1/4) ... [2024-06-04 16:00:03,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d04ffd5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:00:03, skipping insertion in model container [2024-06-04 16:00:03,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:00:01" (2/4) ... [2024-06-04 16:00:03,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d04ffd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:00:03, skipping insertion in model container [2024-06-04 16:00:03,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:00:02" (3/4) ... [2024-06-04 16:00:03,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d04ffd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:00:03, skipping insertion in model container [2024-06-04 16:00:03,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:00:03" (4/4) ... [2024-06-04 16:00:03,435 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2024-06-04 16:00:03,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:00:03,449 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 16:00:03,449 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:00:03,486 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-06-04 16:00:03,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 30 transitions, 74 flow [2024-06-04 16:00:03,528 INFO L124 PetriNetUnfolderBase]: 2/28 cut-off events. [2024-06-04 16:00:03,528 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-06-04 16:00:03,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 28 events. 2/28 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 42 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-06-04 16:00:03,534 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 30 transitions, 74 flow [2024-06-04 16:00:03,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 26 transitions, 61 flow [2024-06-04 16:00:03,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:00:03,562 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;@b45e736, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:00:03,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 16:00:03,571 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:00:03,571 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-06-04 16:00:03,572 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:00:03,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:03,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 16:00:03,573 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)] === [2024-06-04 16:00:03,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:03,578 INFO L85 PathProgramCache]: Analyzing trace with hash -28591471, now seen corresponding path program 1 times [2024-06-04 16:00:03,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:03,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470305897] [2024-06-04 16:00:03,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:03,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:04,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:04,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470305897] [2024-06-04 16:00:04,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470305897] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:04,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:04,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 16:00:04,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147933104] [2024-06-04 16:00:04,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:04,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:00:04,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:04,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:00:04,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:00:04,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 16:00:04,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 61 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) [2024-06-04 16:00:04,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:04,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 16:00:04,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:04,343 INFO L124 PetriNetUnfolderBase]: 267/485 cut-off events. [2024-06-04 16:00:04,343 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-06-04 16:00:04,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 973 conditions, 485 events. 267/485 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2027 event pairs, 95 based on Foata normal form. 24/498 useless extension candidates. Maximal degree in co-relation 899. Up to 308 conditions per place. [2024-06-04 16:00:04,348 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 32 selfloop transitions, 2 changer transitions 3/40 dead transitions. [2024-06-04 16:00:04,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 169 flow [2024-06-04 16:00:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:00:04,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:00:04,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2024-06-04 16:00:04,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-04 16:00:04,358 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 61 flow. Second operand 3 states and 54 transitions. [2024-06-04 16:00:04,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 169 flow [2024-06-04 16:00:04,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 16:00:04,362 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 67 flow [2024-06-04 16:00:04,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2024-06-04 16:00:04,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2024-06-04 16:00:04,366 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 67 flow [2024-06-04 16:00:04,367 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) [2024-06-04 16:00:04,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:04,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:04,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:00:04,367 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)] === [2024-06-04 16:00:04,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:04,368 INFO L85 PathProgramCache]: Analyzing trace with hash 685559177, now seen corresponding path program 1 times [2024-06-04 16:00:04,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:04,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914776118] [2024-06-04 16:00:04,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:04,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:04,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:04,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914776118] [2024-06-04 16:00:04,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914776118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:04,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:04,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 16:00:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642566680] [2024-06-04 16:00:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:04,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 16:00:04,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:04,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 16:00:04,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 16:00:04,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 16:00:04,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 67 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) [2024-06-04 16:00:04,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:04,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 16:00:04,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:04,614 INFO L124 PetriNetUnfolderBase]: 304/561 cut-off events. [2024-06-04 16:00:04,614 INFO L125 PetriNetUnfolderBase]: For 57/57 co-relation queries the response was YES. [2024-06-04 16:00:04,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1204 conditions, 561 events. 304/561 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2339 event pairs, 123 based on Foata normal form. 20/576 useless extension candidates. Maximal degree in co-relation 574. Up to 302 conditions per place. [2024-06-04 16:00:04,620 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 35 selfloop transitions, 5 changer transitions 0/43 dead transitions. [2024-06-04 16:00:04,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 188 flow [2024-06-04 16:00:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:00:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:00:04,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-04 16:00:04,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-04 16:00:04,624 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 67 flow. Second operand 4 states and 60 transitions. [2024-06-04 16:00:04,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 188 flow [2024-06-04 16:00:04,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 43 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:00:04,629 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 104 flow [2024-06-04 16:00:04,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-06-04 16:00:04,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-06-04 16:00:04,634 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 104 flow [2024-06-04 16:00:04,635 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) [2024-06-04 16:00:04,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:04,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:04,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:00:04,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 16:00:04,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:04,636 INFO L85 PathProgramCache]: Analyzing trace with hash -222351430, now seen corresponding path program 1 times [2024-06-04 16:00:04,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:04,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621259882] [2024-06-04 16:00:04,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:04,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:04,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:04,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:04,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621259882] [2024-06-04 16:00:04,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621259882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:04,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:04,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 16:00:04,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060365813] [2024-06-04 16:00:04,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:04,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 16:00:04,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:04,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 16:00:04,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-04 16:00:04,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 30 [2024-06-04 16:00:04,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-06-04 16:00:04,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:04,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 30 [2024-06-04 16:00:04,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:04,932 INFO L124 PetriNetUnfolderBase]: 395/716 cut-off events. [2024-06-04 16:00:04,933 INFO L125 PetriNetUnfolderBase]: For 422/422 co-relation queries the response was YES. [2024-06-04 16:00:04,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1835 conditions, 716 events. 395/716 cut-off events. For 422/422 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2971 event pairs, 93 based on Foata normal form. 27/738 useless extension candidates. Maximal degree in co-relation 1354. Up to 297 conditions per place. [2024-06-04 16:00:04,937 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 49 selfloop transitions, 3 changer transitions 3/58 dead transitions. [2024-06-04 16:00:04,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 58 transitions, 310 flow [2024-06-04 16:00:04,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 16:00:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 16:00:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-04 16:00:04,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-06-04 16:00:04,940 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 104 flow. Second operand 4 states and 67 transitions. [2024-06-04 16:00:04,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 58 transitions, 310 flow [2024-06-04 16:00:04,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 58 transitions, 309 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:00:04,942 INFO L231 Difference]: Finished difference. Result has 36 places, 30 transitions, 111 flow [2024-06-04 16:00:04,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=36, PETRI_TRANSITIONS=30} [2024-06-04 16:00:04,943 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 5 predicate places. [2024-06-04 16:00:04,943 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 30 transitions, 111 flow [2024-06-04 16:00:04,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-06-04 16:00:04,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:04,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:04,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 16:00:04,945 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)] === [2024-06-04 16:00:04,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:04,945 INFO L85 PathProgramCache]: Analyzing trace with hash -262782786, now seen corresponding path program 1 times [2024-06-04 16:00:04,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:04,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839548837] [2024-06-04 16:00:04,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:04,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:05,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839548837] [2024-06-04 16:00:05,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839548837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:05,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:05,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 16:00:05,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012077016] [2024-06-04 16:00:05,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:05,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:00:05,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:00:05,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:00:05,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 30 [2024-06-04 16:00:05,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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) [2024-06-04 16:00:05,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:05,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 30 [2024-06-04 16:00:05,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:05,145 INFO L124 PetriNetUnfolderBase]: 228/450 cut-off events. [2024-06-04 16:00:05,145 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-06-04 16:00:05,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1147 conditions, 450 events. 228/450 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1687 event pairs, 87 based on Foata normal form. 24/463 useless extension candidates. Maximal degree in co-relation 588. Up to 206 conditions per place. [2024-06-04 16:00:05,147 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 28 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2024-06-04 16:00:05,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 181 flow [2024-06-04 16:00:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:00:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:00:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-04 16:00:05,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-06-04 16:00:05,149 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 111 flow. Second operand 3 states and 53 transitions. [2024-06-04 16:00:05,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 181 flow [2024-06-04 16:00:05,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 168 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-04 16:00:05,151 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 90 flow [2024-06-04 16:00:05,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2024-06-04 16:00:05,153 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-06-04 16:00:05,153 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 90 flow [2024-06-04 16:00:05,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 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) [2024-06-04 16:00:05,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:00:05,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:00:05,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 16:00:05,154 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)] === [2024-06-04 16:00:05,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:00:05,154 INFO L85 PathProgramCache]: Analyzing trace with hash -435180824, now seen corresponding path program 1 times [2024-06-04 16:00:05,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:00:05,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727909285] [2024-06-04 16:00:05,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:00:05,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:00:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:00:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:00:05,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:00:05,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727909285] [2024-06-04 16:00:05,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727909285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:00:05,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:00:05,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-04 16:00:05,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988448661] [2024-06-04 16:00:05,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:00:05,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-04 16:00:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:00:05,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-04 16:00:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-04 16:00:05,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 30 [2024-06-04 16:00:05,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 90 flow. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2024-06-04 16:00:05,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:00:05,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 30 [2024-06-04 16:00:05,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:00:05,614 INFO L124 PetriNetUnfolderBase]: 397/708 cut-off events. [2024-06-04 16:00:05,617 INFO L125 PetriNetUnfolderBase]: For 571/571 co-relation queries the response was YES. [2024-06-04 16:00:05,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 708 events. 397/708 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2672 event pairs, 99 based on Foata normal form. 18/722 useless extension candidates. Maximal degree in co-relation 1087. Up to 179 conditions per place. [2024-06-04 16:00:05,618 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2024-06-04 16:00:05,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 68 transitions, 344 flow [2024-06-04 16:00:05,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 16:00:05,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 16:00:05,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-04 16:00:05,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-04 16:00:05,623 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 90 flow. Second operand 8 states and 100 transitions. [2024-06-04 16:00:05,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 68 transitions, 344 flow [2024-06-04 16:00:05,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 68 transitions, 308 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-04 16:00:05,626 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-06-04 16:00:05,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-06-04 16:00:05,627 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 6 predicate places. [2024-06-04 16:00:05,628 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-06-04 16:00:05,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2024-06-04 16:00:05,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 16:00:05,630 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 16:00:05,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 16:00:05,631 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 16:00:05,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 16:00:05,631 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-06-04 16:00:05,634 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 16:00:05,634 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 16:00:05,638 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 16:00:05,638 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 16:00:05,641 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 04:00:05 BasicIcfg [2024-06-04 16:00:05,641 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 16:00:05,641 INFO L158 Benchmark]: Toolchain (without parser) took 3772.57ms. Allocated memory was 151.0MB in the beginning and 272.6MB in the end (delta: 121.6MB). Free memory was 71.8MB in the beginning and 211.9MB in the end (delta: -140.1MB). Peak memory consumption was 90.0MB. Max. memory is 16.1GB. [2024-06-04 16:00:05,641 INFO L158 Benchmark]: Witness Parser took 0.17ms. Allocated memory is still 151.0MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:00:05,642 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 120.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:00:05,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 768.65ms. Allocated memory was 151.0MB in the beginning and 218.1MB in the end (delta: 67.1MB). Free memory was 71.6MB in the beginning and 165.4MB in the end (delta: -93.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-06-04 16:00:05,647 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.29ms. Allocated memory is still 218.1MB. Free memory was 165.4MB in the beginning and 162.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 16:00:05,648 INFO L158 Benchmark]: Boogie Preprocessor took 63.90ms. Allocated memory is still 218.1MB. Free memory was 162.2MB in the beginning and 160.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:00:05,648 INFO L158 Benchmark]: RCFGBuilder took 651.89ms. Allocated memory is still 218.1MB. Free memory was 160.1MB in the beginning and 112.9MB in the end (delta: 47.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-04 16:00:05,648 INFO L158 Benchmark]: TraceAbstraction took 2210.45ms. Allocated memory was 218.1MB in the beginning and 272.6MB in the end (delta: 54.5MB). Free memory was 111.9MB in the beginning and 211.9MB in the end (delta: -100.0MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. [2024-06-04 16:00:05,650 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 0.17ms. Allocated memory is still 151.0MB. Free memory is still 102.7MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 151.0MB. Free memory is still 120.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 768.65ms. Allocated memory was 151.0MB in the beginning and 218.1MB in the end (delta: 67.1MB). Free memory was 71.6MB in the beginning and 165.4MB in the end (delta: -93.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.29ms. Allocated memory is still 218.1MB. Free memory was 165.4MB in the beginning and 162.2MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.90ms. Allocated memory is still 218.1MB. Free memory was 162.2MB in the beginning and 160.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 651.89ms. Allocated memory is still 218.1MB. Free memory was 160.1MB in the beginning and 112.9MB in the end (delta: 47.2MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 2210.45ms. Allocated memory was 218.1MB in the beginning and 272.6MB in the end (delta: 54.5MB). Free memory was 111.9MB in the beginning and 211.9MB in the end (delta: -100.0MB). Peak memory consumption was 60.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1022]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 1023]: 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, 45 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: 2.1s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 180 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 169 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 1 mSDtfsCounter, 402 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=3, InterpolantAutomatonStates: 22, 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, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 427 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2024-06-04 16:00:05,689 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