./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/mutex-meet/pthread-demo-datarace-1.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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-C-DAC/pthread-demo-datarace-1.i ./goblint.2024-05-07_14-17-48.files/mutex-meet/pthread-demo-datarace-1.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 --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 10:48:48,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 10:48:48,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 10:48:48,769 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 10:48:48,775 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 10:48:48,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 10:48:48,798 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 10:48:48,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 10:48:48,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 10:48:48,800 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 10:48:48,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 10:48:48,801 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 10:48:48,802 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 10:48:48,803 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 10:48:48,803 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 10:48:48,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 10:48:48,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 10:48:48,806 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 10:48:48,807 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 10:48:48,807 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 10:48:48,807 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 10:48:48,807 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 10:48:48,808 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 10:48:48,808 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 10:48:48,808 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 10:48:48,808 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 10:48:48,808 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 10:48:48,809 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 10:48:48,809 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 10:48:48,809 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 10:48:48,810 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 10:48:48,810 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 10:48:48,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:48:48,811 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 10:48:48,811 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 10:48:48,811 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 10:48:48,811 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 10:48:48,811 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 10:48:48,812 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 10:48:48,812 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 10:48:48,812 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 10:48:48,812 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 10:48:48,812 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 10:48:48,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 10:48:49,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 10:48:49,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 10:48:49,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 10:48:49,061 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 10:48:49,062 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 10:48:49,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/mutex-meet/pthread-demo-datarace-1.yml/witness.yml [2024-05-12 10:48:49,202 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 10:48:49,203 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 10:48:49,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2024-05-12 10:48:50,226 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 10:48:50,489 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 10:48:50,490 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2024-05-12 10:48:50,507 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ee256e2/975a1c7f0b48451d87be85ea0321da19/FLAG6be30694d [2024-05-12 10:48:50,523 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52ee256e2/975a1c7f0b48451d87be85ea0321da19 [2024-05-12 10:48:50,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 10:48:50,526 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 10:48:50,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 10:48:50,530 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 10:48:50,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 10:48:50,535 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:48:49" (1/2) ... [2024-05-12 10:48:50,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddee471 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:48:50, skipping insertion in model container [2024-05-12 10:48:50,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:48:49" (1/2) ... [2024-05-12 10:48:50,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10b7d05e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 10:48:50, skipping insertion in model container [2024-05-12 10:48:50,537 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:48:50" (2/2) ... [2024-05-12 10:48:50,538 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ddee471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:50, skipping insertion in model container [2024-05-12 10:48:50,538 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 10:48:50" (2/2) ... [2024-05-12 10:48:50,538 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 10:48:50,569 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 10:48:50,571 INFO L97 edCorrectnessWitness]: Location invariant before [L1343-L1346] (! multithreaded || 0 <= myglobal) && (! multithreaded || (mymutex_locked || ((0 <= myglobal && 1 <= myglobal) && myglobal != 0))) [2024-05-12 10:48:50,571 INFO L103 edCorrectnessWitness]: ghost_variable mymutex_locked = 0 [2024-05-12 10:48:50,571 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 10:48:50,571 INFO L106 edCorrectnessWitness]: ghost_update [L1330-L1330] mymutex_locked = 0; [2024-05-12 10:48:50,571 INFO L106 edCorrectnessWitness]: ghost_update [L1349-L1349] mymutex_locked = 1; [2024-05-12 10:48:50,571 INFO L106 edCorrectnessWitness]: ghost_update [L1343-L1343] multithreaded = 1; [2024-05-12 10:48:50,572 INFO L106 edCorrectnessWitness]: ghost_update [L1351-L1351] mymutex_locked = 0; [2024-05-12 10:48:50,572 INFO L106 edCorrectnessWitness]: ghost_update [L1325-L1325] mymutex_locked = 1; [2024-05-12 10:48:50,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 10:48:50,788 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] [2024-05-12 10:48:51,039 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:48:51,047 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local [2024-05-12 10:48:51,085 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i[820,833] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 10:48:51,143 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 10:48:51,203 INFO L206 MainTranslator]: Completed translation [2024-05-12 10:48:51,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51 WrapperNode [2024-05-12 10:48:51,205 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 10:48:51,206 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 10:48:51,206 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 10:48:51,207 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 10:48:51,211 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,224 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,238 INFO L138 Inliner]: procedures = 365, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-05-12 10:48:51,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 10:48:51,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 10:48:51,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 10:48:51,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 10:48:51,246 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,250 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,259 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-05-12 10:48:51,259 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,259 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,263 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,265 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,267 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,269 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 10:48:51,269 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 10:48:51,270 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 10:48:51,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 10:48:51,270 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (1/1) ... [2024-05-12 10:48:51,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 10:48:51,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:48:51,306 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) [2024-05-12 10:48:51,312 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 [2024-05-12 10:48:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 10:48:51,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 10:48:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-05-12 10:48:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-05-12 10:48:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-05-12 10:48:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-05-12 10:48:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 10:48:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 10:48:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 10:48:51,334 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-05-12 10:48:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 10:48:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2024-05-12 10:48:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2024-05-12 10:48:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 10:48:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 10:48:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 10:48:51,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 10:48:51,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 10:48:51,336 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 10:48:51,430 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 10:48:51,432 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 10:48:51,579 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 10:48:51,580 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 10:48:51,687 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 10:48:51,687 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-05-12 10:48:51,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:48:51 BoogieIcfgContainer [2024-05-12 10:48:51,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 10:48:51,689 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 10:48:51,689 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 10:48:51,692 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 10:48:51,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 10:48:49" (1/4) ... [2024-05-12 10:48:51,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503f8e14 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 10:48:51, skipping insertion in model container [2024-05-12 10:48:51,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 10:48:50" (2/4) ... [2024-05-12 10:48:51,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503f8e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:48:51, skipping insertion in model container [2024-05-12 10:48:51,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 10:48:51" (3/4) ... [2024-05-12 10:48:51,693 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@503f8e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 10:48:51, skipping insertion in model container [2024-05-12 10:48:51,693 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 10:48:51" (4/4) ... [2024-05-12 10:48:51,694 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2024-05-12 10:48:51,707 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 10:48:51,707 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-05-12 10:48:51,707 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 10:48:51,730 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-05-12 10:48:51,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 63 flow [2024-05-12 10:48:51,790 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2024-05-12 10:48:51,791 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-05-12 10:48:51,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 27 events. 3/27 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 32 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-05-12 10:48:51,805 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 63 flow [2024-05-12 10:48:51,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 24 transitions, 54 flow [2024-05-12 10:48:51,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 10:48:51,832 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;@30b36e44, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 10:48:51,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-05-12 10:48:51,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 10:48:51,848 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-05-12 10:48:51,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 10:48:51,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:51,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-05-12 10:48:51,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:51,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:51,856 INFO L85 PathProgramCache]: Analyzing trace with hash 8789, now seen corresponding path program 1 times [2024-05-12 10:48:51,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:51,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808236324] [2024-05-12 10:48:51,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:51,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:52,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:52,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808236324] [2024-05-12 10:48:52,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808236324] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:52,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:52,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 10:48:52,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757362943] [2024-05-12 10:48:52,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:52,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:48:52,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:48:52,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:48:52,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:48:52,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:52,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:52,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:48:52,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:52,234 INFO L124 PetriNetUnfolderBase]: 37/85 cut-off events. [2024-05-12 10:48:52,235 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-05-12 10:48:52,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 85 events. 37/85 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 231 event pairs, 25 based on Foata normal form. 1/84 useless extension candidates. Maximal degree in co-relation 148. Up to 78 conditions per place. [2024-05-12 10:48:52,238 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 16 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2024-05-12 10:48:52,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 88 flow [2024-05-12 10:48:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:48:52,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:48:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2024-05-12 10:48:52,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-05-12 10:48:52,253 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 54 flow. Second operand 3 states and 40 transitions. [2024-05-12 10:48:52,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 88 flow [2024-05-12 10:48:52,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 84 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:48:52,256 INFO L231 Difference]: Finished difference. Result has 25 places, 23 transitions, 52 flow [2024-05-12 10:48:52,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=25, PETRI_TRANSITIONS=23} [2024-05-12 10:48:52,261 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2024-05-12 10:48:52,261 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 23 transitions, 52 flow [2024-05-12 10:48:52,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:52,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:52,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 10:48:52,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:52,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:52,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1474243634, now seen corresponding path program 1 times [2024-05-12 10:48:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:52,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981254650] [2024-05-12 10:48:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:52,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:52,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:52,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:52,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981254650] [2024-05-12 10:48:52,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981254650] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:52,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:52,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:48:52,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110599465] [2024-05-12 10:48:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:48:52,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:48:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:48:52,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-05-12 10:48:52,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:52,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:52,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-05-12 10:48:52,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:52,471 INFO L124 PetriNetUnfolderBase]: 61/137 cut-off events. [2024-05-12 10:48:52,471 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-05-12 10:48:52,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 137 events. 61/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 405 event pairs, 27 based on Foata normal form. 6/142 useless extension candidates. Maximal degree in co-relation 259. Up to 79 conditions per place. [2024-05-12 10:48:52,473 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 26 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-05-12 10:48:52,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 33 transitions, 128 flow [2024-05-12 10:48:52,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:48:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:48:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-05-12 10:48:52,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-05-12 10:48:52,474 INFO L175 Difference]: Start difference. First operand has 25 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-05-12 10:48:52,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 33 transitions, 128 flow [2024-05-12 10:48:52,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 33 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 10:48:52,476 INFO L231 Difference]: Finished difference. Result has 26 places, 24 transitions, 60 flow [2024-05-12 10:48:52,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=26, PETRI_TRANSITIONS=24} [2024-05-12 10:48:52,477 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2024-05-12 10:48:52,477 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 24 transitions, 60 flow [2024-05-12 10:48:52,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 10:48:52,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:52,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:52,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 10:48:52,478 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:52,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:52,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1263122102, now seen corresponding path program 1 times [2024-05-12 10:48:52,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:52,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645371468] [2024-05-12 10:48:52,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:52,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:52,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:52,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645371468] [2024-05-12 10:48:52,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645371468] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:52,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:52,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:48:52,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109235231] [2024-05-12 10:48:52,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:52,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:48:52,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:52,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:48:52,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:48:52,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-05-12 10:48:52,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 24 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-05-12 10:48:52,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:52,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-05-12 10:48:52,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:52,666 INFO L124 PetriNetUnfolderBase]: 101/226 cut-off events. [2024-05-12 10:48:52,666 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-05-12 10:48:52,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 226 events. 101/226 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 833 event pairs, 45 based on Foata normal form. 10/235 useless extension candidates. Maximal degree in co-relation 116. Up to 127 conditions per place. [2024-05-12 10:48:52,668 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 28 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2024-05-12 10:48:52,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 35 transitions, 152 flow [2024-05-12 10:48:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:48:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:48:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-05-12 10:48:52,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2024-05-12 10:48:52,670 INFO L175 Difference]: Start difference. First operand has 26 places, 24 transitions, 60 flow. Second operand 3 states and 53 transitions. [2024-05-12 10:48:52,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 35 transitions, 152 flow [2024-05-12 10:48:52,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:48:52,673 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 70 flow [2024-05-12 10:48:52,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2024-05-12 10:48:52,674 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2024-05-12 10:48:52,674 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 70 flow [2024-05-12 10:48:52,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2024-05-12 10:48:52,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:52,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:52,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 10:48:52,676 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:52,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:52,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2103248351, now seen corresponding path program 1 times [2024-05-12 10:48:52,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:52,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018920142] [2024-05-12 10:48:52,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:52,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:52,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:52,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018920142] [2024-05-12 10:48:52,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018920142] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:48:52,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052508564] [2024-05-12 10:48:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:52,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:52,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:48:52,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:48:52,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-05-12 10:48:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:52,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2024-05-12 10:48:52,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:48:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:52,939 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:48:52,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:52,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052508564] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:48:52,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:48:52,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-05-12 10:48:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143698246] [2024-05-12 10:48:52,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:48:52,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 10:48:52,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 10:48:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-05-12 10:48:52,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:48:52,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2024-05-12 10:48:52,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:52,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:48:52,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:53,083 INFO L124 PetriNetUnfolderBase]: 231/472 cut-off events. [2024-05-12 10:48:53,083 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2024-05-12 10:48:53,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1106 conditions, 472 events. 231/472 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1717 event pairs, 18 based on Foata normal form. 30/502 useless extension candidates. Maximal degree in co-relation 351. Up to 110 conditions per place. [2024-05-12 10:48:53,086 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 58 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2024-05-12 10:48:53,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 68 transitions, 320 flow [2024-05-12 10:48:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 10:48:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 10:48:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-05-12 10:48:53,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2024-05-12 10:48:53,088 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 70 flow. Second operand 6 states and 104 transitions. [2024-05-12 10:48:53,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 68 transitions, 320 flow [2024-05-12 10:48:53,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 68 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:48:53,090 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 108 flow [2024-05-12 10:48:53,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2024-05-12 10:48:53,091 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2024-05-12 10:48:53,091 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 108 flow [2024-05-12 10:48:53,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 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) [2024-05-12 10:48:53,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:53,091 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:53,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-05-12 10:48:53,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:53,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:53,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:53,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1855103256, now seen corresponding path program 2 times [2024-05-12 10:48:53,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:53,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036746755] [2024-05-12 10:48:53,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:53,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-05-12 10:48:53,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:53,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036746755] [2024-05-12 10:48:53,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036746755] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:48:53,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 10:48:53,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-05-12 10:48:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008396153] [2024-05-12 10:48:53,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:48:53,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 10:48:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:53,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 10:48:53,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 10:48:53,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 28 [2024-05-12 10:48:53,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-05-12 10:48:53,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:53,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 28 [2024-05-12 10:48:53,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:53,507 INFO L124 PetriNetUnfolderBase]: 123/313 cut-off events. [2024-05-12 10:48:53,507 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2024-05-12 10:48:53,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 313 events. 123/313 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1044 event pairs, 50 based on Foata normal form. 32/344 useless extension candidates. Maximal degree in co-relation 530. Up to 148 conditions per place. [2024-05-12 10:48:53,510 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 28 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2024-05-12 10:48:53,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 38 transitions, 236 flow [2024-05-12 10:48:53,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 10:48:53,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 10:48:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-05-12 10:48:53,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-05-12 10:48:53,512 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 108 flow. Second operand 3 states and 50 transitions. [2024-05-12 10:48:53,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 38 transitions, 236 flow [2024-05-12 10:48:53,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 220 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-05-12 10:48:53,517 INFO L231 Difference]: Finished difference. Result has 37 places, 28 transitions, 108 flow [2024-05-12 10:48:53,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=37, PETRI_TRANSITIONS=28} [2024-05-12 10:48:53,519 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2024-05-12 10:48:53,519 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 28 transitions, 108 flow [2024-05-12 10:48:53,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-05-12 10:48:53,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:53,520 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:53,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 10:48:53,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:53,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash 742970558, now seen corresponding path program 3 times [2024-05-12 10:48:53,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:53,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275490270] [2024-05-12 10:48:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:53,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-05-12 10:48:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275490270] [2024-05-12 10:48:53,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275490270] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:48:53,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181084693] [2024-05-12 10:48:53,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 10:48:53,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:53,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:48:53,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:48:53,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-05-12 10:48:53,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-05-12 10:48:53,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:48:53,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 6 conjunts are in the unsatisfiable core [2024-05-12 10:48:53,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:48:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:53,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:48:53,820 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 1 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:48:53,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181084693] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:48:53,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:48:53,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-05-12 10:48:53,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817755943] [2024-05-12 10:48:53,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:48:53,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-05-12 10:48:53,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:53,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-05-12 10:48:53,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-05-12 10:48:53,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:48:53,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 28 transitions, 108 flow. Second operand has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 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) [2024-05-12 10:48:53,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:53,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:48:53,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:54,279 INFO L124 PetriNetUnfolderBase]: 503/1145 cut-off events. [2024-05-12 10:48:54,279 INFO L125 PetriNetUnfolderBase]: For 1141/1141 co-relation queries the response was YES. [2024-05-12 10:48:54,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3524 conditions, 1145 events. 503/1145 cut-off events. For 1141/1141 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4648 event pairs, 8 based on Foata normal form. 137/1282 useless extension candidates. Maximal degree in co-relation 984. Up to 213 conditions per place. [2024-05-12 10:48:54,285 INFO L140 encePairwiseOnDemand]: 21/28 looper letters, 250 selfloop transitions, 69 changer transitions 0/323 dead transitions. [2024-05-12 10:48:54,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 323 transitions, 1912 flow [2024-05-12 10:48:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-05-12 10:48:54,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-05-12 10:48:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 586 transitions. [2024-05-12 10:48:54,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.615546218487395 [2024-05-12 10:48:54,288 INFO L175 Difference]: Start difference. First operand has 37 places, 28 transitions, 108 flow. Second operand 34 states and 586 transitions. [2024-05-12 10:48:54,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 323 transitions, 1912 flow [2024-05-12 10:48:54,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 323 transitions, 1786 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 10:48:54,293 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 744 flow [2024-05-12 10:48:54,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=744, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2024-05-12 10:48:54,293 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 68 predicate places. [2024-05-12 10:48:54,294 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 744 flow [2024-05-12 10:48:54,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.714285714285714) internal successors, (178), 14 states have internal predecessors, (178), 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) [2024-05-12 10:48:54,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:54,294 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:54,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-05-12 10:48:54,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-05-12 10:48:54,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:54,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1476593582, now seen corresponding path program 4 times [2024-05-12 10:48:54,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:54,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628490791] [2024-05-12 10:48:54,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:54,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-05-12 10:48:54,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:54,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628490791] [2024-05-12 10:48:54,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628490791] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:48:54,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946737314] [2024-05-12 10:48:54,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-05-12 10:48:54,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:54,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:48:54,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:48:54,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-05-12 10:48:54,733 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-05-12 10:48:54,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:48:54,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 4 conjunts are in the unsatisfiable core [2024-05-12 10:48:54,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:48:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-05-12 10:48:54,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:48:54,889 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-05-12 10:48:54,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946737314] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:48:54,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:48:54,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-05-12 10:48:54,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881831718] [2024-05-12 10:48:54,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:48:54,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 10:48:54,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:54,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 10:48:54,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-05-12 10:48:54,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:48:54,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 744 flow. Second operand has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2024-05-12 10:48:54,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:54,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:48:54,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:55,234 INFO L124 PetriNetUnfolderBase]: 954/2277 cut-off events. [2024-05-12 10:48:55,234 INFO L125 PetriNetUnfolderBase]: For 32588/32603 co-relation queries the response was YES. [2024-05-12 10:48:55,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10697 conditions, 2277 events. 954/2277 cut-off events. For 32588/32603 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 11678 event pairs, 184 based on Foata normal form. 193/2432 useless extension candidates. Maximal degree in co-relation 9276. Up to 363 conditions per place. [2024-05-12 10:48:55,251 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 136 selfloop transitions, 38 changer transitions 0/182 dead transitions. [2024-05-12 10:48:55,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 182 transitions, 1954 flow [2024-05-12 10:48:55,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 10:48:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 10:48:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-05-12 10:48:55,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6294642857142857 [2024-05-12 10:48:55,253 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 744 flow. Second operand 8 states and 141 transitions. [2024-05-12 10:48:55,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 182 transitions, 1954 flow [2024-05-12 10:48:55,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 182 transitions, 1868 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 10:48:55,286 INFO L231 Difference]: Finished difference. Result has 102 places, 94 transitions, 880 flow [2024-05-12 10:48:55,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=880, PETRI_PLACES=102, PETRI_TRANSITIONS=94} [2024-05-12 10:48:55,287 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 76 predicate places. [2024-05-12 10:48:55,287 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 94 transitions, 880 flow [2024-05-12 10:48:55,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.222222222222221) internal successors, (110), 9 states have internal predecessors, (110), 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) [2024-05-12 10:48:55,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:55,287 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:55,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-05-12 10:48:55,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:55,500 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:55,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1443553620, now seen corresponding path program 5 times [2024-05-12 10:48:55,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:55,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096500702] [2024-05-12 10:48:55,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:55,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:55,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 115 proven. 81 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-05-12 10:48:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:55,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096500702] [2024-05-12 10:48:55,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096500702] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:48:55,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019080952] [2024-05-12 10:48:55,691 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-05-12 10:48:55,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:55,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:48:55,692 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:48:55,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-05-12 10:48:55,861 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2024-05-12 10:48:55,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:48:55,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 8 conjunts are in the unsatisfiable core [2024-05-12 10:48:55,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:48:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 115 proven. 81 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-05-12 10:48:55,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:48:56,051 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 115 proven. 81 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2024-05-12 10:48:56,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019080952] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:48:56,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:48:56,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-05-12 10:48:56,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068589652] [2024-05-12 10:48:56,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:48:56,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-05-12 10:48:56,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:56,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-05-12 10:48:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-05-12 10:48:56,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:48:56,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 94 transitions, 880 flow. Second operand has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 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) [2024-05-12 10:48:56,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:56,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:48:56,058 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:56,893 INFO L124 PetriNetUnfolderBase]: 2065/4836 cut-off events. [2024-05-12 10:48:56,893 INFO L125 PetriNetUnfolderBase]: For 91413/91424 co-relation queries the response was YES. [2024-05-12 10:48:56,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25888 conditions, 4836 events. 2065/4836 cut-off events. For 91413/91424 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 27511 event pairs, 232 based on Foata normal form. 403/5153 useless extension candidates. Maximal degree in co-relation 22781. Up to 803 conditions per place. [2024-05-12 10:48:56,928 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 288 selfloop transitions, 46 changer transitions 0/342 dead transitions. [2024-05-12 10:48:56,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 342 transitions, 3868 flow [2024-05-12 10:48:56,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-05-12 10:48:56,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-05-12 10:48:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 289 transitions. [2024-05-12 10:48:56,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6450892857142857 [2024-05-12 10:48:56,930 INFO L175 Difference]: Start difference. First operand has 102 places, 94 transitions, 880 flow. Second operand 16 states and 289 transitions. [2024-05-12 10:48:56,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 342 transitions, 3868 flow [2024-05-12 10:48:56,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 342 transitions, 3704 flow, removed 60 selfloop flow, removed 2 redundant places. [2024-05-12 10:48:56,986 INFO L231 Difference]: Finished difference. Result has 124 places, 103 transitions, 1102 flow [2024-05-12 10:48:56,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1102, PETRI_PLACES=124, PETRI_TRANSITIONS=103} [2024-05-12 10:48:56,987 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 98 predicate places. [2024-05-12 10:48:56,987 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 103 transitions, 1102 flow [2024-05-12 10:48:56,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 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) [2024-05-12 10:48:56,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:56,988 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 14, 14, 14, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:57,003 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-05-12 10:48:57,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:57,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:57,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash 886747490, now seen corresponding path program 6 times [2024-05-12 10:48:57,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:57,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886817186] [2024-05-12 10:48:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:57,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:48:57,657 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-05-12 10:48:57,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:48:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886817186] [2024-05-12 10:48:57,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886817186] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:48:57,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425672188] [2024-05-12 10:48:57,659 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-05-12 10:48:57,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:57,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:48:57,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:48:57,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-05-12 10:48:57,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2024-05-12 10:48:57,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:48:57,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 16 conjunts are in the unsatisfiable core [2024-05-12 10:48:57,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:48:58,060 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-05-12 10:48:58,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:48:58,318 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 469 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-05-12 10:48:58,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425672188] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:48:58,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:48:58,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 23 [2024-05-12 10:48:58,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717572004] [2024-05-12 10:48:58,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:48:58,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-12 10:48:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:48:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-12 10:48:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-05-12 10:48:58,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:48:58,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 103 transitions, 1102 flow. Second operand has 23 states, 23 states have (on average 12.347826086956522) internal successors, (284), 23 states have internal predecessors, (284), 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) [2024-05-12 10:48:58,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:48:58,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:48:58,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:48:59,464 INFO L124 PetriNetUnfolderBase]: 2899/6756 cut-off events. [2024-05-12 10:48:59,465 INFO L125 PetriNetUnfolderBase]: For 136582/136599 co-relation queries the response was YES. [2024-05-12 10:48:59,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35183 conditions, 6756 events. 2899/6756 cut-off events. For 136582/136599 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 39217 event pairs, 268 based on Foata normal form. 311/6945 useless extension candidates. Maximal degree in co-relation 30902. Up to 1133 conditions per place. [2024-05-12 10:48:59,511 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 402 selfloop transitions, 52 changer transitions 0/462 dead transitions. [2024-05-12 10:48:59,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 462 transitions, 5250 flow [2024-05-12 10:48:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-05-12 10:48:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-05-12 10:48:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 395 transitions. [2024-05-12 10:48:59,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6412337662337663 [2024-05-12 10:48:59,513 INFO L175 Difference]: Start difference. First operand has 124 places, 103 transitions, 1102 flow. Second operand 22 states and 395 transitions. [2024-05-12 10:48:59,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 462 transitions, 5250 flow [2024-05-12 10:48:59,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 462 transitions, 5190 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-05-12 10:48:59,631 INFO L231 Difference]: Finished difference. Result has 147 places, 110 transitions, 1340 flow [2024-05-12 10:48:59,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1340, PETRI_PLACES=147, PETRI_TRANSITIONS=110} [2024-05-12 10:48:59,631 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 121 predicate places. [2024-05-12 10:48:59,631 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 110 transitions, 1340 flow [2024-05-12 10:48:59,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.347826086956522) internal successors, (284), 23 states have internal predecessors, (284), 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) [2024-05-12 10:48:59,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:48:59,632 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:48:59,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-05-12 10:48:59,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:48:59,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:48:59,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:48:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2035232030, now seen corresponding path program 7 times [2024-05-12 10:48:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:48:59,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154109243] [2024-05-12 10:48:59,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:48:59,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:48:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:00,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 20 proven. 235 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-05-12 10:49:00,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:00,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154109243] [2024-05-12 10:49:00,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154109243] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:49:00,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653357926] [2024-05-12 10:49:00,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-05-12 10:49:00,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:49:00,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:49:00,200 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:49:00,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-05-12 10:49:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:00,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 12 conjunts are in the unsatisfiable core [2024-05-12 10:49:00,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:49:00,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 20 proven. 235 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-05-12 10:49:00,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:49:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 20 proven. 235 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2024-05-12 10:49:00,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653357926] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:49:00,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:49:00,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 23 [2024-05-12 10:49:00,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214694848] [2024-05-12 10:49:00,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:49:00,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-12 10:49:00,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:00,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-12 10:49:00,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2024-05-12 10:49:00,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:49:00,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 110 transitions, 1340 flow. Second operand has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 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) [2024-05-12 10:49:00,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:00,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:49:00,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:03,156 INFO L124 PetriNetUnfolderBase]: 5249/12257 cut-off events. [2024-05-12 10:49:03,157 INFO L125 PetriNetUnfolderBase]: For 386101/386101 co-relation queries the response was YES. [2024-05-12 10:49:03,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68224 conditions, 12257 events. 5249/12257 cut-off events. For 386101/386101 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 81891 event pairs, 140 based on Foata normal form. 830/13086 useless extension candidates. Maximal degree in co-relation 64299. Up to 2517 conditions per place. [2024-05-12 10:49:03,241 INFO L140 encePairwiseOnDemand]: 24/28 looper letters, 662 selfloop transitions, 66 changer transitions 0/735 dead transitions. [2024-05-12 10:49:03,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 735 transitions, 15060 flow [2024-05-12 10:49:03,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-05-12 10:49:03,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-05-12 10:49:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 399 transitions. [2024-05-12 10:49:03,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6477272727272727 [2024-05-12 10:49:03,245 INFO L175 Difference]: Start difference. First operand has 147 places, 110 transitions, 1340 flow. Second operand 22 states and 399 transitions. [2024-05-12 10:49:03,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 735 transitions, 15060 flow [2024-05-12 10:49:03,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 735 transitions, 14464 flow, removed 0 selfloop flow, removed 13 redundant places. [2024-05-12 10:49:03,452 INFO L231 Difference]: Finished difference. Result has 166 places, 143 transitions, 1824 flow [2024-05-12 10:49:03,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1264, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1824, PETRI_PLACES=166, PETRI_TRANSITIONS=143} [2024-05-12 10:49:03,453 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 140 predicate places. [2024-05-12 10:49:03,454 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 143 transitions, 1824 flow [2024-05-12 10:49:03,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.08695652173913) internal successors, (278), 23 states have internal predecessors, (278), 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) [2024-05-12 10:49:03,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:03,454 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:03,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-05-12 10:49:03,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:49:03,668 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:03,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1259561250, now seen corresponding path program 8 times [2024-05-12 10:49:03,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:03,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869862576] [2024-05-12 10:49:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:03,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:06,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:06,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869862576] [2024-05-12 10:49:06,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869862576] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:49:06,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362445369] [2024-05-12 10:49:06,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-05-12 10:49:06,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:49:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:49:06,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:49:06,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-05-12 10:49:06,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-05-12 10:49:06,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:49:06,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 125 conjunts are in the unsatisfiable core [2024-05-12 10:49:06,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:49:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:06,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-05-12 10:49:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1940 backedges. 0 proven. 1940 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 10:49:06,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362445369] provided 0 perfect and 2 imperfect interpolant sequences [2024-05-12 10:49:06,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-05-12 10:49:06,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 44 [2024-05-12 10:49:06,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677479919] [2024-05-12 10:49:06,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-05-12 10:49:06,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-05-12 10:49:06,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:06,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-05-12 10:49:06,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1892, Unknown=0, NotChecked=0, Total=1980 [2024-05-12 10:49:07,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 28 [2024-05-12 10:49:07,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 143 transitions, 1824 flow. Second operand has 45 states, 45 states have (on average 8.844444444444445) internal successors, (398), 45 states have internal predecessors, (398), 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) [2024-05-12 10:49:07,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:07,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 28 [2024-05-12 10:49:07,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:18,746 INFO L124 PetriNetUnfolderBase]: 9480/24176 cut-off events. [2024-05-12 10:49:18,747 INFO L125 PetriNetUnfolderBase]: For 1251386/1251386 co-relation queries the response was YES. [2024-05-12 10:49:18,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187038 conditions, 24176 events. 9480/24176 cut-off events. For 1251386/1251386 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 191451 event pairs, 1193 based on Foata normal form. 1/24176 useless extension candidates. Maximal degree in co-relation 145556. Up to 5769 conditions per place. [2024-05-12 10:49:19,011 INFO L140 encePairwiseOnDemand]: 23/28 looper letters, 1788 selfloop transitions, 83 changer transitions 2/1887 dead transitions. [2024-05-12 10:49:19,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1887 transitions, 32542 flow [2024-05-12 10:49:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-05-12 10:49:19,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-05-12 10:49:19,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 690 transitions. [2024-05-12 10:49:19,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.560064935064935 [2024-05-12 10:49:19,013 INFO L175 Difference]: Start difference. First operand has 166 places, 143 transitions, 1824 flow. Second operand 44 states and 690 transitions. [2024-05-12 10:49:19,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1887 transitions, 32542 flow [2024-05-12 10:49:21,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 1887 transitions, 31813 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-05-12 10:49:21,186 INFO L231 Difference]: Finished difference. Result has 202 places, 225 transitions, 2112 flow [2024-05-12 10:49:21,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2112, PETRI_PLACES=202, PETRI_TRANSITIONS=225} [2024-05-12 10:49:21,187 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 176 predicate places. [2024-05-12 10:49:21,187 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 225 transitions, 2112 flow [2024-05-12 10:49:21,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 8.844444444444445) internal successors, (398), 45 states have internal predecessors, (398), 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) [2024-05-12 10:49:21,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:21,188 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:21,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-05-12 10:49:21,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:49:21,391 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:21,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:21,391 INFO L85 PathProgramCache]: Analyzing trace with hash -616973687, now seen corresponding path program 9 times [2024-05-12 10:49:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:21,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889136541] [2024-05-12 10:49:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:21,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:22,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-05-12 10:49:22,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889136541] [2024-05-12 10:49:22,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889136541] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:49:22,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491136472] [2024-05-12 10:49:22,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-05-12 10:49:22,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:49:22,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:49:22,264 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:49:22,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-05-12 10:49:22,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2024-05-12 10:49:22,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:49:22,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 22 conjunts are in the unsatisfiable core [2024-05-12 10:49:22,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:49:23,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-05-12 10:49:23,004 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 10:49:23,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491136472] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:23,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 10:49:23,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-05-12 10:49:23,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799294359] [2024-05-12 10:49:23,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:23,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-12 10:49:23,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-12 10:49:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-05-12 10:49:23,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:49:23,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 225 transitions, 2112 flow. Second operand has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 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) [2024-05-12 10:49:23,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:23,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:49:23,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:28,016 INFO L124 PetriNetUnfolderBase]: 9149/21005 cut-off events. [2024-05-12 10:49:28,016 INFO L125 PetriNetUnfolderBase]: For 875713/875713 co-relation queries the response was YES. [2024-05-12 10:49:28,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150712 conditions, 21005 events. 9149/21005 cut-off events. For 875713/875713 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 158273 event pairs, 56 based on Foata normal form. 89/21093 useless extension candidates. Maximal degree in co-relation 150640. Up to 5220 conditions per place. [2024-05-12 10:49:28,365 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 2009 selfloop transitions, 63 changer transitions 0/2079 dead transitions. [2024-05-12 10:49:28,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 2079 transitions, 23348 flow [2024-05-12 10:49:28,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-05-12 10:49:28,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-05-12 10:49:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 402 transitions. [2024-05-12 10:49:28,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6242236024844721 [2024-05-12 10:49:28,368 INFO L175 Difference]: Start difference. First operand has 202 places, 225 transitions, 2112 flow. Second operand 23 states and 402 transitions. [2024-05-12 10:49:28,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 2079 transitions, 23348 flow [2024-05-12 10:49:29,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 2079 transitions, 23340 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-05-12 10:49:29,410 INFO L231 Difference]: Finished difference. Result has 221 places, 222 transitions, 2188 flow [2024-05-12 10:49:29,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2062, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2188, PETRI_PLACES=221, PETRI_TRANSITIONS=222} [2024-05-12 10:49:29,411 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 195 predicate places. [2024-05-12 10:49:29,411 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 222 transitions, 2188 flow [2024-05-12 10:49:29,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 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) [2024-05-12 10:49:29,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 10:49:29,411 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 10:49:29,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-05-12 10:49:29,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-05-12 10:49:29,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-05-12 10:49:29,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 10:49:29,625 INFO L85 PathProgramCache]: Analyzing trace with hash 754772410, now seen corresponding path program 10 times [2024-05-12 10:49:29,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 10:49:29,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555827535] [2024-05-12 10:49:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 10:49:29,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 10:49:29,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 10:49:30,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 975 proven. 96 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-05-12 10:49:30,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 10:49:30,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555827535] [2024-05-12 10:49:30,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555827535] provided 0 perfect and 1 imperfect interpolant sequences [2024-05-12 10:49:30,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359216956] [2024-05-12 10:49:30,272 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-05-12 10:49:30,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-05-12 10:49:30,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 10:49:30,288 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-05-12 10:49:30,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-05-12 10:49:30,601 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-05-12 10:49:30,602 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-05-12 10:49:30,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 1085 conjuncts, 22 conjunts are in the unsatisfiable core [2024-05-12 10:49:30,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-05-12 10:49:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2041 backedges. 1071 proven. 0 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2024-05-12 10:49:30,710 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-05-12 10:49:30,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359216956] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 10:49:30,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-05-12 10:49:30,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2024-05-12 10:49:30,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453820701] [2024-05-12 10:49:30,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 10:49:30,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-05-12 10:49:30,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 10:49:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-05-12 10:49:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2024-05-12 10:49:30,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 28 [2024-05-12 10:49:30,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 222 transitions, 2188 flow. Second operand has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 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) [2024-05-12 10:49:30,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 10:49:30,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 28 [2024-05-12 10:49:30,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 10:49:33,433 INFO L124 PetriNetUnfolderBase]: 5308/12495 cut-off events. [2024-05-12 10:49:33,433 INFO L125 PetriNetUnfolderBase]: For 218679/218869 co-relation queries the response was YES. [2024-05-12 10:49:33,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72818 conditions, 12495 events. 5308/12495 cut-off events. For 218679/218869 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 83033 event pairs, 265 based on Foata normal form. 273/12633 useless extension candidates. Maximal degree in co-relation 72356. Up to 2163 conditions per place. [2024-05-12 10:49:33,500 INFO L140 encePairwiseOnDemand]: 25/28 looper letters, 0 selfloop transitions, 0 changer transitions 1531/1531 dead transitions. [2024-05-12 10:49:33,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 1531 transitions, 15519 flow [2024-05-12 10:49:33,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-05-12 10:49:33,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-05-12 10:49:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 401 transitions. [2024-05-12 10:49:33,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6226708074534162 [2024-05-12 10:49:33,502 INFO L175 Difference]: Start difference. First operand has 221 places, 222 transitions, 2188 flow. Second operand 23 states and 401 transitions. [2024-05-12 10:49:33,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 1531 transitions, 15519 flow [2024-05-12 10:49:33,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 1531 transitions, 14601 flow, removed 0 selfloop flow, removed 24 redundant places. [2024-05-12 10:49:33,762 INFO L231 Difference]: Finished difference. Result has 216 places, 0 transitions, 0 flow [2024-05-12 10:49:33,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=28, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=0, PETRI_PLACES=216, PETRI_TRANSITIONS=0} [2024-05-12 10:49:33,763 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 190 predicate places. [2024-05-12 10:49:33,763 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 0 transitions, 0 flow [2024-05-12 10:49:33,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.173913043478262) internal successors, (280), 23 states have internal predecessors, (280), 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) [2024-05-12 10:49:33,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 3 remaining) [2024-05-12 10:49:33,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-05-12 10:49:33,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-05-12 10:49:33,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-05-12 10:49:33,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-05-12 10:49:34,000 INFO L445 BasicCegarLoop]: Path program histogram: [10, 1, 1, 1] [2024-05-12 10:49:34,003 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-05-12 10:49:34,003 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-05-12 10:49:34,006 INFO L507 ceAbstractionStarter]: Automizer considered 1 witness invariants [2024-05-12 10:49:34,006 INFO L508 ceAbstractionStarter]: WitnessConsidered=1 [2024-05-12 10:49:34,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.05 10:49:34 BasicIcfg [2024-05-12 10:49:34,007 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-05-12 10:49:34,008 INFO L158 Benchmark]: Toolchain (without parser) took 43481.54ms. Allocated memory was 155.2MB in the beginning and 8.3GB in the end (delta: 8.2GB). Free memory was 82.6MB in the beginning and 6.9GB in the end (delta: -6.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-05-12 10:49:34,008 INFO L158 Benchmark]: Witness Parser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:49:34,008 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory was 129.8MB in the beginning and 129.7MB in the end (delta: 103.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-05-12 10:49:34,008 INFO L158 Benchmark]: CACSL2BoogieTranslator took 675.64ms. Allocated memory is still 155.2MB. Free memory was 82.4MB in the beginning and 88.7MB in the end (delta: -6.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-05-12 10:49:34,008 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.15ms. Allocated memory is still 155.2MB. Free memory was 88.7MB in the beginning and 86.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:49:34,009 INFO L158 Benchmark]: Boogie Preprocessor took 30.41ms. Allocated memory is still 155.2MB. Free memory was 86.2MB in the beginning and 83.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-05-12 10:49:34,009 INFO L158 Benchmark]: RCFGBuilder took 418.37ms. Allocated memory is still 155.2MB. Free memory was 83.6MB in the beginning and 116.6MB in the end (delta: -33.0MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2024-05-12 10:49:34,009 INFO L158 Benchmark]: TraceAbstraction took 42318.27ms. Allocated memory was 155.2MB in the beginning and 8.3GB in the end (delta: 8.2GB). Free memory was 115.9MB in the beginning and 6.9GB in the end (delta: -6.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2024-05-12 10:49:34,010 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 0.14ms. Allocated memory is still 98.6MB. Free memory is still 65.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 155.2MB. Free memory was 129.8MB in the beginning and 129.7MB in the end (delta: 103.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 675.64ms. Allocated memory is still 155.2MB. Free memory was 82.4MB in the beginning and 88.7MB in the end (delta: -6.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.15ms. Allocated memory is still 155.2MB. Free memory was 88.7MB in the beginning and 86.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.41ms. Allocated memory is still 155.2MB. Free memory was 86.2MB in the beginning and 83.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 418.37ms. Allocated memory is still 155.2MB. Free memory was 83.6MB in the beginning and 116.6MB in the end (delta: -33.0MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * TraceAbstraction took 42318.27ms. Allocated memory was 155.2MB in the beginning and 8.3GB in the end (delta: 8.2GB). Free memory was 115.9MB in the beginning and 6.9GB in the end (delta: -6.8GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1343]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 34 locations, 3 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: 42.2s, OverallIterations: 13, TraceHistogramMax: 21, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1840 SdHoareTripleChecker+Valid, 7.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1823 mSDsluCounter, 313 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24449 IncrementalHoareTripleChecker+Invalid, 24503 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 8 mSDtfsCounter, 24449 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2084 GetRequests, 1878 SyntacticMatches, 13 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2188occurred in iteration=12, InterpolantAutomatonStates: 210, 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: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 2415 NumberOfCodeBlocks, 2395 NumberOfCodeBlocksAsserted, 69 NumberOfCheckSat, 3122 ConstructedInterpolants, 0 QuantifiedInterpolants, 7639 SizeOfPredicates, 22 NumberOfNonLiveVariables, 5891 ConjunctsInSsa, 218 ConjunctsInUnsatCore, 29 InterpolantComputations, 6 PerfectInterpolantSequences, 13068/21532 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! [2024-05-12 10:49:34,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE