./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/time_var_mutex.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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-atomic/time_var_mutex.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/time_var_mutex.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-dev-958ec4d-m [2024-02-07 14:21:55,105 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:21:55,163 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:21:55,169 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:21:55,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:21:55,195 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:21:55,195 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:21:55,196 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:21:55,196 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:21:55,200 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:21:55,200 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:21:55,200 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:21:55,201 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:21:55,202 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:21:55,202 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:21:55,203 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:21:55,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:21:55,203 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:21:55,203 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:21:55,203 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:21:55,204 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:21:55,204 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:21:55,204 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:21:55,204 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:21:55,205 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:21:55,205 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:21:55,205 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:21:55,205 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:21:55,206 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:21:55,206 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:21:55,207 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:21:55,207 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:21:55,207 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:21:55,207 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:21:55,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:21:55,208 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:21:55,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:21:55,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:21:55,208 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:21:55,208 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:21:55,208 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:21:55,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:21:55,209 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:21:55,209 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:21:55,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:21:55,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:21:55,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:21:55,449 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:21:55,450 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:21:55,451 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/time_var_mutex.yml/witness.yml [2024-02-07 14:21:55,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:21:55,525 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:21:55,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2024-02-07 14:21:56,574 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:21:56,875 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:21:56,875 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i [2024-02-07 14:21:56,889 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643dc0da5/2b9b5bb06a7c43c79c721afc2e9d9993/FLAGd3d4f88cc [2024-02-07 14:21:56,899 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/643dc0da5/2b9b5bb06a7c43c79c721afc2e9d9993 [2024-02-07 14:21:56,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:21:56,901 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:21:56,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:21:56,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:21:56,908 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:21:56,909 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:55" (1/2) ... [2024-02-07 14:21:56,909 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333671d0 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:56, skipping insertion in model container [2024-02-07 14:21:56,910 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:55" (1/2) ... [2024-02-07 14:21:56,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@75a2b79d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:21:56, skipping insertion in model container [2024-02-07 14:21:56,911 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:21:56" (2/2) ... [2024-02-07 14:21:56,911 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333671d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:56, skipping insertion in model container [2024-02-07 14:21:56,912 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:21:56" (2/2) ... [2024-02-07 14:21:56,912 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:21:56,963 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:21:56,964 INFO L76 edCorrectnessWitness]: Location invariant before [L699-L699] inode == 0 [2024-02-07 14:21:56,965 INFO L76 edCorrectnessWitness]: Location invariant before [L717-L717] (busy == 0) && (inode == 0) [2024-02-07 14:21:56,965 INFO L76 edCorrectnessWitness]: Location invariant before [L701-L701] inode == 1 [2024-02-07 14:21:56,965 INFO L76 edCorrectnessWitness]: Location invariant before [L695-L695] ((0 <= inode) && (inode <= 1)) && (inode == 0 || inode == 1) [2024-02-07 14:21:56,965 INFO L76 edCorrectnessWitness]: Location invariant before [L710-L710] (((0 <= block) && (block <= 1)) && (busy == 0)) && (block == 0 || block == 1) [2024-02-07 14:21:56,965 INFO L76 edCorrectnessWitness]: Location invariant before [L698-L698] busy == 1 [2024-02-07 14:21:56,965 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] (((((0 <= block) && (0 <= busy)) && (block <= 1)) && (busy <= 1)) && (block == 0 || block == 1)) && (busy == 0 || busy == 1) [2024-02-07 14:21:56,965 INFO L76 edCorrectnessWitness]: Location invariant before [L702-L702] ((0 <= block) && (block <= 1)) && (block == 0 || block == 1) [2024-02-07 14:21:57,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:21:57,247 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] [2024-02-07 14:21:57,251 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] [2024-02-07 14:21:57,258 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:21:57,276 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 14:21:57,339 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30247,30260] Start Parsing Local Start Parsing Local [2024-02-07 14:21:57,349 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/time_var_mutex.i[30452,30465] Start Parsing Local [2024-02-07 14:21:57,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:21:57,388 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:21:57,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57 WrapperNode [2024-02-07 14:21:57,388 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:21:57,389 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:21:57,389 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:21:57,389 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:21:57,394 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,416 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,435 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-02-07 14:21:57,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:21:57,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:21:57,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:21:57,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:21:57,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,456 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,472 INFO L175 MemorySlicer]: Split 16 memory accesses to 5 slices as follows [2, 5, 5, 2, 2]. 31 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0]. The 2 writes are split as follows [0, 0, 0, 1, 1]. [2024-02-07 14:21:57,473 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,483 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,492 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,494 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:21:57,497 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:21:57,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:21:57,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:21:57,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (1/1) ... [2024-02-07 14:21:57,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:21:57,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:21:57,521 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) [2024-02-07 14:21:57,536 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 [2024-02-07 14:21:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure allocator [2024-02-07 14:21:57,559 INFO L138 BoogieDeclarations]: Found implementation of procedure allocator [2024-02-07 14:21:57,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:21:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:21:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:21:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 14:21:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-07 14:21:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure de_allocator [2024-02-07 14:21:57,560 INFO L138 BoogieDeclarations]: Found implementation of procedure de_allocator [2024-02-07 14:21:57,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 14:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-07 14:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 14:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:21:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 14:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-07 14:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 14:21:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:21:57,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:21:57,563 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-07 14:21:57,679 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:21:57,680 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:21:57,821 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:21:57,821 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:21:57,947 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:21:57,947 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:21:57,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:21:57 BoogieIcfgContainer [2024-02-07 14:21:57,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:21:57,951 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:21:57,951 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:21:57,953 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:21:57,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:21:55" (1/4) ... [2024-02-07 14:21:57,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500a05b3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:21:57, skipping insertion in model container [2024-02-07 14:21:57,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:21:56" (2/4) ... [2024-02-07 14:21:57,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500a05b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:21:57, skipping insertion in model container [2024-02-07 14:21:57,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:21:57" (3/4) ... [2024-02-07 14:21:57,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@500a05b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:21:57, skipping insertion in model container [2024-02-07 14:21:57,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:21:57" (4/4) ... [2024-02-07 14:21:57,961 INFO L112 eAbstractionObserver]: Analyzing ICFG time_var_mutex.i [2024-02-07 14:21:57,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:21:57,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-02-07 14:21:57,975 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:21:58,034 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:21:58,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 53 transitions, 120 flow [2024-02-07 14:21:58,109 INFO L124 PetriNetUnfolderBase]: 4/51 cut-off events. [2024-02-07 14:21:58,109 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 14:21:58,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 51 events. 4/51 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 113 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 45. Up to 3 conditions per place. [2024-02-07 14:21:58,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 53 transitions, 120 flow [2024-02-07 14:21:58,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 49 transitions, 107 flow [2024-02-07 14:21:58,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:21:58,137 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;@7588775e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:21:58,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-02-07 14:21:58,140 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:21:58,141 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2024-02-07 14:21:58,141 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:21:58,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:58,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-02-07 14:21:58,142 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:58,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 8805, now seen corresponding path program 1 times [2024-02-07 14:21:58,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:58,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699142347] [2024-02-07 14:21:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:58,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:58,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:58,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699142347] [2024-02-07 14:21:58,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699142347] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:58,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:58,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:21:58,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714574177] [2024-02-07 14:21:58,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:58,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:58,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:58,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:58,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 53 [2024-02-07 14:21:58,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-02-07 14:21:58,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:58,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 53 [2024-02-07 14:21:58,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:58,568 INFO L124 PetriNetUnfolderBase]: 204/468 cut-off events. [2024-02-07 14:21:58,569 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2024-02-07 14:21:58,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 468 events. 204/468 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2403 event pairs, 82 based on Foata normal form. 53/445 useless extension candidates. Maximal degree in co-relation 802. Up to 295 conditions per place. [2024-02-07 14:21:58,576 INFO L140 encePairwiseOnDemand]: 45/53 looper letters, 28 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2024-02-07 14:21:58,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 51 transitions, 174 flow [2024-02-07 14:21:58,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:58,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-02-07 14:21:58,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-02-07 14:21:58,589 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 107 flow. Second operand 3 states and 106 transitions. [2024-02-07 14:21:58,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 51 transitions, 174 flow [2024-02-07 14:21:58,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 14:21:58,595 INFO L231 Difference]: Finished difference. Result has 50 places, 44 transitions, 100 flow [2024-02-07 14:21:58,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=44} [2024-02-07 14:21:58,600 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-02-07 14:21:58,600 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 44 transitions, 100 flow [2024-02-07 14:21:58,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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) [2024-02-07 14:21:58,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:58,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:58,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:21:58,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting de_allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:58,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:58,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1848077912, now seen corresponding path program 1 times [2024-02-07 14:21:58,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:58,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61605819] [2024-02-07 14:21:58,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:58,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:58,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:58,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:58,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61605819] [2024-02-07 14:21:58,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61605819] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:58,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:58,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:21:58,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324348428] [2024-02-07 14:21:58,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:58,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:58,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:58,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:58,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:58,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2024-02-07 14:21:58,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-02-07 14:21:58,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:58,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2024-02-07 14:21:58,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:58,898 INFO L124 PetriNetUnfolderBase]: 348/785 cut-off events. [2024-02-07 14:21:58,898 INFO L125 PetriNetUnfolderBase]: For 34/40 co-relation queries the response was YES. [2024-02-07 14:21:58,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1503 conditions, 785 events. 348/785 cut-off events. For 34/40 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4485 event pairs, 169 based on Foata normal form. 71/839 useless extension candidates. Maximal degree in co-relation 1251. Up to 456 conditions per place. [2024-02-07 14:21:58,906 INFO L140 encePairwiseOnDemand]: 43/53 looper letters, 33 selfloop transitions, 4 changer transitions 4/58 dead transitions. [2024-02-07 14:21:58,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 58 transitions, 213 flow [2024-02-07 14:21:58,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:58,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-02-07 14:21:58,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.710691823899371 [2024-02-07 14:21:58,909 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 100 flow. Second operand 3 states and 113 transitions. [2024-02-07 14:21:58,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 58 transitions, 213 flow [2024-02-07 14:21:58,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 209 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:58,911 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 132 flow [2024-02-07 14:21:58,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2024-02-07 14:21:58,911 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-02-07 14:21:58,911 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 132 flow [2024-02-07 14:21:58,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2024-02-07 14:21:58,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:58,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:58,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:21:58,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting allocatorErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:58,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:58,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1667331971, now seen corresponding path program 1 times [2024-02-07 14:21:58,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:58,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425962246] [2024-02-07 14:21:58,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:58,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:58,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:58,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:58,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425962246] [2024-02-07 14:21:58,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425962246] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:58,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:58,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:58,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074605443] [2024-02-07 14:21:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:58,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:58,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:58,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:58,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:58,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-02-07 14:21:58,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-02-07 14:21:58,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:58,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-02-07 14:21:58,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:59,040 INFO L124 PetriNetUnfolderBase]: 185/496 cut-off events. [2024-02-07 14:21:59,041 INFO L125 PetriNetUnfolderBase]: For 108/124 co-relation queries the response was YES. [2024-02-07 14:21:59,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 496 events. 185/496 cut-off events. For 108/124 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2758 event pairs, 93 based on Foata normal form. 51/524 useless extension candidates. Maximal degree in co-relation 737. Up to 242 conditions per place. [2024-02-07 14:21:59,044 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 27 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2024-02-07 14:21:59,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 188 flow [2024-02-07 14:21:59,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:59,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-02-07 14:21:59,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6855345911949685 [2024-02-07 14:21:59,047 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 132 flow. Second operand 3 states and 109 transitions. [2024-02-07 14:21:59,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 188 flow [2024-02-07 14:21:59,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:59,049 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 119 flow [2024-02-07 14:21:59,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2024-02-07 14:21:59,050 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-02-07 14:21:59,051 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 119 flow [2024-02-07 14:21:59,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-02-07 14:21:59,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:59,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:59,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:21:59,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting allocatorErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:59,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash 190292677, now seen corresponding path program 1 times [2024-02-07 14:21:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:59,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508483974] [2024-02-07 14:21:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:59,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:59,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:59,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:59,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508483974] [2024-02-07 14:21:59,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508483974] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:59,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:59,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:21:59,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555066124] [2024-02-07 14:21:59,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:59,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:59,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:59,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:59,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:59,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-02-07 14:21:59,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-02-07 14:21:59,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:59,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-02-07 14:21:59,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:59,184 INFO L124 PetriNetUnfolderBase]: 177/487 cut-off events. [2024-02-07 14:21:59,184 INFO L125 PetriNetUnfolderBase]: For 61/63 co-relation queries the response was YES. [2024-02-07 14:21:59,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 487 events. 177/487 cut-off events. For 61/63 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2708 event pairs, 97 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 730. Up to 159 conditions per place. [2024-02-07 14:21:59,186 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 25 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2024-02-07 14:21:59,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 185 flow [2024-02-07 14:21:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:59,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-02-07 14:21:59,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6477987421383647 [2024-02-07 14:21:59,188 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 119 flow. Second operand 3 states and 103 transitions. [2024-02-07 14:21:59,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 185 flow [2024-02-07 14:21:59,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:21:59,189 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 120 flow [2024-02-07 14:21:59,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-02-07 14:21:59,190 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2024-02-07 14:21:59,190 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 120 flow [2024-02-07 14:21:59,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-02-07 14:21:59,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:59,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:59,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:21:59,191 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:59,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:59,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1604106008, now seen corresponding path program 1 times [2024-02-07 14:21:59,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:59,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487408157] [2024-02-07 14:21:59,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:59,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:59,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:59,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:59,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487408157] [2024-02-07 14:21:59,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487408157] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:59,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:59,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:59,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699131799] [2024-02-07 14:21:59,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:59,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:59,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:59,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:59,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:59,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2024-02-07 14:21:59,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-02-07 14:21:59,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:59,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2024-02-07 14:21:59,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:59,278 INFO L124 PetriNetUnfolderBase]: 177/473 cut-off events. [2024-02-07 14:21:59,278 INFO L125 PetriNetUnfolderBase]: For 42/44 co-relation queries the response was YES. [2024-02-07 14:21:59,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 473 events. 177/473 cut-off events. For 42/44 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2568 event pairs, 97 based on Foata normal form. 14/462 useless extension candidates. Maximal degree in co-relation 730. Up to 160 conditions per place. [2024-02-07 14:21:59,280 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 26 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2024-02-07 14:21:59,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 47 transitions, 186 flow [2024-02-07 14:21:59,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:59,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:59,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-02-07 14:21:59,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-02-07 14:21:59,282 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 120 flow. Second operand 3 states and 106 transitions. [2024-02-07 14:21:59,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 47 transitions, 186 flow [2024-02-07 14:21:59,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:59,283 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 116 flow [2024-02-07 14:21:59,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-02-07 14:21:59,284 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-02-07 14:21:59,284 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 116 flow [2024-02-07 14:21:59,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2024-02-07 14:21:59,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:59,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:59,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:21:59,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting de_allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:59,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:59,285 INFO L85 PathProgramCache]: Analyzing trace with hash -366701257, now seen corresponding path program 1 times [2024-02-07 14:21:59,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:59,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115587758] [2024-02-07 14:21:59,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:59,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:59,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:59,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115587758] [2024-02-07 14:21:59,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115587758] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:59,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:59,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:21:59,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620395999] [2024-02-07 14:21:59,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:59,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:59,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:59,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 53 [2024-02-07 14:21:59,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-02-07 14:21:59,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:59,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 53 [2024-02-07 14:21:59,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:59,401 INFO L124 PetriNetUnfolderBase]: 111/348 cut-off events. [2024-02-07 14:21:59,401 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-02-07 14:21:59,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 703 conditions, 348 events. 111/348 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1729 event pairs, 64 based on Foata normal form. 8/343 useless extension candidates. Maximal degree in co-relation 457. Up to 147 conditions per place. [2024-02-07 14:21:59,402 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 26 selfloop transitions, 5 changer transitions 1/50 dead transitions. [2024-02-07 14:21:59,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 201 flow [2024-02-07 14:21:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:59,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2024-02-07 14:21:59,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7610062893081762 [2024-02-07 14:21:59,404 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 116 flow. Second operand 3 states and 121 transitions. [2024-02-07 14:21:59,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 201 flow [2024-02-07 14:21:59,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 194 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:59,405 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 119 flow [2024-02-07 14:21:59,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2024-02-07 14:21:59,406 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-02-07 14:21:59,406 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 119 flow [2024-02-07 14:21:59,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2024-02-07 14:21:59,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:59,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:59,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:21:59,407 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:59,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:59,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1812320984, now seen corresponding path program 1 times [2024-02-07 14:21:59,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:59,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867059222] [2024-02-07 14:21:59,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:59,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:59,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:59,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867059222] [2024-02-07 14:21:59,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867059222] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:59,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:59,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:59,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038869832] [2024-02-07 14:21:59,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:59,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:21:59,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:59,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:21:59,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:21:59,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2024-02-07 14:21:59,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-02-07 14:21:59,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:59,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2024-02-07 14:21:59,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:59,501 INFO L124 PetriNetUnfolderBase]: 121/310 cut-off events. [2024-02-07 14:21:59,501 INFO L125 PetriNetUnfolderBase]: For 115/115 co-relation queries the response was YES. [2024-02-07 14:21:59,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 310 events. 121/310 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1334 event pairs, 63 based on Foata normal form. 24/321 useless extension candidates. Maximal degree in co-relation 433. Up to 126 conditions per place. [2024-02-07 14:21:59,502 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 22 selfloop transitions, 1 changer transitions 7/42 dead transitions. [2024-02-07 14:21:59,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 42 transitions, 189 flow [2024-02-07 14:21:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:21:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:21:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-02-07 14:21:59,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.660377358490566 [2024-02-07 14:21:59,503 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 119 flow. Second operand 3 states and 105 transitions. [2024-02-07 14:21:59,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 42 transitions, 189 flow [2024-02-07 14:21:59,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 182 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:21:59,507 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 94 flow [2024-02-07 14:21:59,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2024-02-07 14:21:59,508 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-02-07 14:21:59,508 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 94 flow [2024-02-07 14:21:59,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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) [2024-02-07 14:21:59,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:59,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:59,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:21:59,509 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting de_allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:59,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1127313590, now seen corresponding path program 1 times [2024-02-07 14:21:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541265432] [2024-02-07 14:21:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:59,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:59,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:59,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541265432] [2024-02-07 14:21:59,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541265432] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:59,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:59,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:21:59,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597327494] [2024-02-07 14:21:59,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:59,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:21:59,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:59,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:21:59,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:21:59,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-02-07 14:21:59,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-02-07 14:21:59,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:59,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-02-07 14:21:59,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:59,655 INFO L124 PetriNetUnfolderBase]: 70/197 cut-off events. [2024-02-07 14:21:59,655 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2024-02-07 14:21:59,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 197 events. 70/197 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 722 event pairs, 28 based on Foata normal form. 4/195 useless extension candidates. Maximal degree in co-relation 291. Up to 95 conditions per place. [2024-02-07 14:21:59,656 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 25 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2024-02-07 14:21:59,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 176 flow [2024-02-07 14:21:59,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:21:59,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:21:59,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2024-02-07 14:21:59,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5330188679245284 [2024-02-07 14:21:59,657 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 94 flow. Second operand 4 states and 113 transitions. [2024-02-07 14:21:59,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 176 flow [2024-02-07 14:21:59,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 171 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 14:21:59,658 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 99 flow [2024-02-07 14:21:59,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2024-02-07 14:21:59,659 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -7 predicate places. [2024-02-07 14:21:59,659 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 99 flow [2024-02-07 14:21:59,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2024-02-07 14:21:59,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:21:59,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:59,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 14:21:59,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting de_allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT, allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 14:21:59,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:21:59,660 INFO L85 PathProgramCache]: Analyzing trace with hash -763782312, now seen corresponding path program 1 times [2024-02-07 14:21:59,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:21:59,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713577285] [2024-02-07 14:21:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:21:59,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:21:59,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:21:59,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 14:21:59,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:21:59,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713577285] [2024-02-07 14:21:59,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713577285] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:21:59,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:21:59,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 14:21:59,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158686983] [2024-02-07 14:21:59,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:21:59,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 14:21:59,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:21:59,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 14:21:59,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 14:21:59,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2024-02-07 14:21:59,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-02-07 14:21:59,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:21:59,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2024-02-07 14:21:59,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:21:59,778 INFO L124 PetriNetUnfolderBase]: 52/163 cut-off events. [2024-02-07 14:21:59,778 INFO L125 PetriNetUnfolderBase]: For 76/76 co-relation queries the response was YES. [2024-02-07 14:21:59,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 163 events. 52/163 cut-off events. For 76/76 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 550 event pairs, 16 based on Foata normal form. 16/173 useless extension candidates. Maximal degree in co-relation 209. Up to 60 conditions per place. [2024-02-07 14:21:59,779 INFO L140 encePairwiseOnDemand]: 50/53 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2024-02-07 14:21:59,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 173 flow [2024-02-07 14:21:59,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 14:21:59,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 14:21:59,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 112 transitions. [2024-02-07 14:21:59,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5283018867924528 [2024-02-07 14:21:59,780 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 99 flow. Second operand 4 states and 112 transitions. [2024-02-07 14:21:59,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 173 flow [2024-02-07 14:21:59,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 161 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-02-07 14:21:59,781 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2024-02-07 14:21:59,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2024-02-07 14:21:59,781 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -10 predicate places. [2024-02-07 14:21:59,782 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2024-02-07 14:21:59,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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) [2024-02-07 14:21:59,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 21 remaining) [2024-02-07 14:21:59,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 21 remaining) [2024-02-07 14:21:59,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 21 remaining) [2024-02-07 14:21:59,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr1ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 21 remaining) [2024-02-07 14:21:59,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr5ASSERT_VIOLATIONERROR_FUNCTION (16 of 21 remaining) [2024-02-07 14:21:59,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr2ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 21 remaining) [2024-02-07 14:21:59,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 21 remaining) [2024-02-07 14:21:59,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr1ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 21 remaining) [2024-02-07 14:21:59,785 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr2ASSERT_VIOLATIONERROR_FUNCTION (12 of 21 remaining) [2024-02-07 14:21:59,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 21 remaining) [2024-02-07 14:21:59,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 21 remaining) [2024-02-07 14:21:59,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 21 remaining) [2024-02-07 14:21:59,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 21 remaining) [2024-02-07 14:21:59,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr3ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 21 remaining) [2024-02-07 14:21:59,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 21 remaining) [2024-02-07 14:21:59,786 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr1ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 21 remaining) [2024-02-07 14:21:59,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 21 remaining) [2024-02-07 14:21:59,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location allocatorErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 21 remaining) [2024-02-07 14:21:59,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr0ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 21 remaining) [2024-02-07 14:21:59,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr1ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 21 remaining) [2024-02-07 14:21:59,787 INFO L805 garLoopResultBuilder]: Registering result SAFE for location de_allocatorErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 21 remaining) [2024-02-07 14:21:59,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 14:21:59,788 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:21:59,791 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:21:59,791 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:21:59,794 INFO L503 ceAbstractionStarter]: Automizer considered 8 witness invariants [2024-02-07 14:21:59,794 INFO L504 ceAbstractionStarter]: WitnessConsidered=8 [2024-02-07 14:21:59,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:21:59 BasicIcfg [2024-02-07 14:21:59,795 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:21:59,795 INFO L158 Benchmark]: Toolchain (without parser) took 2894.44ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 109.8MB in the beginning and 144.9MB in the end (delta: -35.2MB). Peak memory consumption was 100.7MB. Max. memory is 16.1GB. [2024-02-07 14:21:59,795 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 142.6MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:21:59,795 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 112.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:21:59,796 INFO L158 Benchmark]: CACSL2BoogieTranslator took 486.94ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 83.6MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-02-07 14:21:59,796 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.86ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:21:59,796 INFO L158 Benchmark]: Boogie Preprocessor took 60.33ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 78.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:21:59,796 INFO L158 Benchmark]: RCFGBuilder took 450.85ms. Allocated memory is still 142.6MB. Free memory was 78.9MB in the beginning and 110.0MB in the end (delta: -31.0MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2024-02-07 14:21:59,797 INFO L158 Benchmark]: TraceAbstraction took 1844.06ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 109.1MB in the beginning and 144.9MB in the end (delta: -35.8MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. [2024-02-07 14:21:59,798 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 0.15ms. Allocated memory is still 142.6MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory is still 112.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 486.94ms. Allocated memory is still 142.6MB. Free memory was 109.8MB in the beginning and 83.6MB in the end (delta: 26.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.86ms. Allocated memory is still 142.6MB. Free memory was 83.6MB in the beginning and 81.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.33ms. Allocated memory is still 142.6MB. Free memory was 81.6MB in the beginning and 78.9MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 450.85ms. Allocated memory is still 142.6MB. Free memory was 78.9MB in the beginning and 110.0MB in the end (delta: -31.0MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1844.06ms. Allocated memory was 142.6MB in the beginning and 190.8MB in the end (delta: 48.2MB). Free memory was 109.1MB in the beginning and 144.9MB in the end (delta: -35.8MB). Peak memory consumption was 98.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 695]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 701]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 698]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 702]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 699]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 708]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 710]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 717]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 90 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.7s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 316 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 180 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 532 IncrementalHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 37 mSDtfsCounter, 532 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=2, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 291 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-02-07 14:21:59,817 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