./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.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/01b_inc-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7c74aec 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-ext/01b_inc-pthread.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/01b_inc-pthread.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.fix-undeclared-acsl-variable-e7c74ae-m [2024-02-07 19:00:43,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:00:43,144 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:00:43,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:00:43,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:00:43,176 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:00:43,177 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:00:43,177 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:00:43,178 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:00:43,181 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:00:43,182 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:00:43,182 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:00:43,183 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:00:43,184 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:00:43,184 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:00:43,184 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:00:43,185 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:00:43,185 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:00:43,185 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:00:43,185 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:00:43,185 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:00:43,186 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:00:43,186 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:00:43,186 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:00:43,187 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:00:43,187 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:00:43,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:00:43,187 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:00:43,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:00:43,188 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:00:43,189 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:00:43,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:00:43,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:00:43,189 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:00:43,190 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:00:43,190 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:00:43,190 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:00:43,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:00:43,190 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:00:43,191 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:00:43,191 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:00:43,191 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:00:43,191 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:00:43,191 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:00:43,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:00:43,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:00:43,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:00:43,482 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:00:43,482 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:00:43,484 INFO L431 ainManager$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/01b_inc-pthread.yml/witness.yml [2024-02-07 19:00:43,611 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:00:43,611 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:00:43,613 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2024-02-07 19:00:44,848 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:00:45,278 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:00:45,279 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/01b_inc-pthread.i [2024-02-07 19:00:45,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0acaf3f7/00bb9e823dd04723a70d0c2b7aab5835/FLAG7eb25dbf4 [2024-02-07 19:00:45,470 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0acaf3f7/00bb9e823dd04723a70d0c2b7aab5835 [2024-02-07 19:00:45,471 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:00:45,472 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:00:45,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:00:45,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:00:45,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:00:45,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:00:43" (1/2) ... [2024-02-07 19:00:45,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cb2b7d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:00:45, skipping insertion in model container [2024-02-07 19:00:45,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:00:43" (1/2) ... [2024-02-07 19:00:45,482 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@133d0b59 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:00:45, skipping insertion in model container [2024-02-07 19:00:45,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:00:45" (2/2) ... [2024-02-07 19:00:45,483 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cb2b7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45, skipping insertion in model container [2024-02-07 19:00:45,483 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:00:45" (2/2) ... [2024-02-07 19:00:45,483 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:00:45,515 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:00:45,516 INFO L76 edCorrectnessWitness]: Location invariant before [L694-L694] 0U == v [2024-02-07 19:00:45,516 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] (1U <= (unsigned int )value) && ((unsigned int )value != 0U) [2024-02-07 19:00:45,516 INFO L76 edCorrectnessWitness]: Location invariant before [L700-L700] (v <= 4294967294U) && (v != 4294967295U) [2024-02-07 19:00:45,517 INFO L76 edCorrectnessWitness]: Location invariant before [L696-L696] (((unsigned int )value <= 4294967294U) && (0U == v)) && ((unsigned int )value != 4294967295U) [2024-02-07 19:00:45,517 INFO L76 edCorrectnessWitness]: Location invariant before [L693-L693] 0U == v [2024-02-07 19:00:45,517 INFO L76 edCorrectnessWitness]: Location invariant before [L692-L692] 0U == v [2024-02-07 19:00:45,517 INFO L76 edCorrectnessWitness]: Location invariant after [L697-L697] (1U <= (unsigned int )value) && ((unsigned int )value != 0U) [2024-02-07 19:00:45,517 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] (v <= 4294967294U) && (v != 4294967295U) [2024-02-07 19:00:45,517 INFO L76 edCorrectnessWitness]: Location invariant after [L697-L697] (v <= 4294967294U) && (v != 4294967295U) [2024-02-07 19:00:45,518 INFO L76 edCorrectnessWitness]: Location invariant before [L697-L697] (v <= 4294967294U) && (v != 4294967295U) [2024-02-07 19:00:45,518 INFO L76 edCorrectnessWitness]: Location invariant before [L691-L691] (0U == v) && (v == 0U) [2024-02-07 19:00:45,544 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:00:45,821 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-ext/01b_inc-pthread.i[30747,30760] [2024-02-07 19:00:45,831 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:00:45,849 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:00:45,943 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-ext/01b_inc-pthread.i[30747,30760] [2024-02-07 19:00:45,945 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:00:45,974 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:00:45,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45 WrapperNode [2024-02-07 19:00:45,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:00:45,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:00:45,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:00:45,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:00:45,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:45,998 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,019 INFO L138 Inliner]: procedures = 164, calls = 23, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-02-07 19:00:46,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:00:46,020 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:00:46,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:00:46,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:00:46,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,043 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2024-02-07 19:00:46,043 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,048 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,052 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,052 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,054 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:00:46,055 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:00:46,055 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:00:46,055 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:00:46,056 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (1/1) ... [2024-02-07 19:00:46,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:00:46,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:00:46,111 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 19:00:46,133 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 19:00:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-07 19:00:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-07 19:00:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:00:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:00:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:00:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:00:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:00:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:00:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:00:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:00:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:00:46,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:00:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:00:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:00:46,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:00:46,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:00:46,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:00:46,198 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 19:00:46,446 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:00:46,448 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:00:46,634 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:00:46,634 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:00:46,744 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:00:46,744 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-02-07 19:00:46,744 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:00:46 BoogieIcfgContainer [2024-02-07 19:00:46,745 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:00:46,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:00:46,746 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:00:46,749 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:00:46,749 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:00:43" (1/4) ... [2024-02-07 19:00:46,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2993aced and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:00:46, skipping insertion in model container [2024-02-07 19:00:46,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:00:45" (2/4) ... [2024-02-07 19:00:46,750 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2993aced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:00:46, skipping insertion in model container [2024-02-07 19:00:46,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:00:45" (3/4) ... [2024-02-07 19:00:46,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2993aced and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:00:46, skipping insertion in model container [2024-02-07 19:00:46,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:00:46" (4/4) ... [2024-02-07 19:00:46,752 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc-pthread.i [2024-02-07 19:00:46,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:00:46,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2024-02-07 19:00:46,767 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:00:46,818 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:00:46,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 35 transitions, 74 flow [2024-02-07 19:00:46,893 INFO L124 PetriNetUnfolderBase]: 1/37 cut-off events. [2024-02-07 19:00:46,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:00:46,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 1/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-02-07 19:00:46,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 35 transitions, 74 flow [2024-02-07 19:00:46,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 35 transitions, 74 flow [2024-02-07 19:00:46,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:00:46,921 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;@79a111bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:00:46,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-02-07 19:00:46,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:00:46,928 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-02-07 19:00:46,928 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:00:46,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:46,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:00:46,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 19:00:46,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:46,934 INFO L85 PathProgramCache]: Analyzing trace with hash 192062604, now seen corresponding path program 1 times [2024-02-07 19:00:46,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:46,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877801609] [2024-02-07 19:00:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:46,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:47,249 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 19:00:47,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:47,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877801609] [2024-02-07 19:00:47,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877801609] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:47,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:47,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:47,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72065121] [2024-02-07 19:00:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:47,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:47,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:47,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:47,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:47,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-02-07 19:00:47,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 19:00:47,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:47,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-02-07 19:00:47,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:47,424 INFO L124 PetriNetUnfolderBase]: 24/105 cut-off events. [2024-02-07 19:00:47,424 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:00:47,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 105 events. 24/105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 328 event pairs, 16 based on Foata normal form. 9/102 useless extension candidates. Maximal degree in co-relation 163. Up to 46 conditions per place. [2024-02-07 19:00:47,430 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 16 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-02-07 19:00:47,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 102 flow [2024-02-07 19:00:47,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:47,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-02-07 19:00:47,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-02-07 19:00:47,442 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 74 flow. Second operand 3 states and 64 transitions. [2024-02-07 19:00:47,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 102 flow [2024-02-07 19:00:47,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:00:47,446 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 66 flow [2024-02-07 19:00:47,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-02-07 19:00:47,451 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2024-02-07 19:00:47,451 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 66 flow [2024-02-07 19:00:47,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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 19:00:47,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:47,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-02-07 19:00:47,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:00:47,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 18 more)] === [2024-02-07 19:00:47,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:47,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1658971592, now seen corresponding path program 1 times [2024-02-07 19:00:47,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:47,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359821890] [2024-02-07 19:00:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:47,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:00:47,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:00:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:00:47,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:00:47,493 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:00:47,495 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-02-07 19:00:47,496 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 21 remaining) [2024-02-07 19:00:47,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 21 remaining) [2024-02-07 19:00:47,497 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 21 remaining) [2024-02-07 19:00:47,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 21 remaining) [2024-02-07 19:00:47,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 21 remaining) [2024-02-07 19:00:47,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 21 remaining) [2024-02-07 19:00:47,498 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 21 remaining) [2024-02-07 19:00:47,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 21 remaining) [2024-02-07 19:00:47,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 21 remaining) [2024-02-07 19:00:47,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (10 of 21 remaining) [2024-02-07 19:00:47,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 21 remaining) [2024-02-07 19:00:47,499 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 21 remaining) [2024-02-07 19:00:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 21 remaining) [2024-02-07 19:00:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 21 remaining) [2024-02-07 19:00:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 21 remaining) [2024-02-07 19:00:47,500 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 21 remaining) [2024-02-07 19:00:47,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 21 remaining) [2024-02-07 19:00:47,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 21 remaining) [2024-02-07 19:00:47,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 21 remaining) [2024-02-07 19:00:47,501 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (0 of 21 remaining) [2024-02-07 19:00:47,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:00:47,502 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 19:00:47,504 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:00:47,504 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:00:47,532 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:00:47,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 65 transitions, 140 flow [2024-02-07 19:00:47,544 INFO L124 PetriNetUnfolderBase]: 2/70 cut-off events. [2024-02-07 19:00:47,545 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 19:00:47,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 70 events. 2/70 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 204 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 61. Up to 3 conditions per place. [2024-02-07 19:00:47,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 65 transitions, 140 flow [2024-02-07 19:00:47,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 65 transitions, 140 flow [2024-02-07 19:00:47,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:00:47,549 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;@79a111bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:00:47,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2024-02-07 19:00:47,551 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:00:47,551 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-02-07 19:00:47,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:00:47,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:47,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:00:47,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-02-07 19:00:47,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash 254121226, now seen corresponding path program 1 times [2024-02-07 19:00:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791094513] [2024-02-07 19:00:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:47,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:47,608 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 19:00:47,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:47,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791094513] [2024-02-07 19:00:47,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791094513] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:47,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:47,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:47,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933083220] [2024-02-07 19:00:47,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:47,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:47,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:47,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:47,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:47,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 65 [2024-02-07 19:00:47,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 19:00:47,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:47,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 65 [2024-02-07 19:00:47,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:47,891 INFO L124 PetriNetUnfolderBase]: 781/1789 cut-off events. [2024-02-07 19:00:47,892 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-02-07 19:00:47,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 1789 events. 781/1789 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 12622 event pairs, 541 based on Foata normal form. 114/1563 useless extension candidates. Maximal degree in co-relation 2561. Up to 856 conditions per place. [2024-02-07 19:00:47,910 INFO L140 encePairwiseOnDemand]: 56/65 looper letters, 40 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-02-07 19:00:47,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 243 flow [2024-02-07 19:00:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:47,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:47,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-02-07 19:00:47,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7230769230769231 [2024-02-07 19:00:47,914 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 140 flow. Second operand 3 states and 141 transitions. [2024-02-07 19:00:47,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 243 flow [2024-02-07 19:00:47,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 243 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:00:47,918 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 130 flow [2024-02-07 19:00:47,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2024-02-07 19:00:47,919 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-02-07 19:00:47,919 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 130 flow [2024-02-07 19:00:47,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 19:00:47,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:47,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:47,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:00:47,921 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-02-07 19:00:47,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:47,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1531209397, now seen corresponding path program 1 times [2024-02-07 19:00:47,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:47,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835882519] [2024-02-07 19:00:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:47,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:00:48,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:48,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835882519] [2024-02-07 19:00:48,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835882519] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:48,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:48,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764663357] [2024-02-07 19:00:48,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:48,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:48,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:48,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:48,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:48,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 65 [2024-02-07 19:00:48,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 19:00:48,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:48,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 65 [2024-02-07 19:00:48,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:48,313 INFO L124 PetriNetUnfolderBase]: 739/1787 cut-off events. [2024-02-07 19:00:48,314 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2024-02-07 19:00:48,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3159 conditions, 1787 events. 739/1787 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 13266 event pairs, 511 based on Foata normal form. 108/1601 useless extension candidates. Maximal degree in co-relation 1688. Up to 874 conditions per place. [2024-02-07 19:00:48,329 INFO L140 encePairwiseOnDemand]: 59/65 looper letters, 39 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2024-02-07 19:00:48,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 67 transitions, 234 flow [2024-02-07 19:00:48,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:48,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2024-02-07 19:00:48,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2024-02-07 19:00:48,331 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 130 flow. Second operand 3 states and 135 transitions. [2024-02-07 19:00:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 67 transitions, 234 flow [2024-02-07 19:00:48,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 67 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:00:48,334 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 122 flow [2024-02-07 19:00:48,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=65, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2024-02-07 19:00:48,335 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2024-02-07 19:00:48,336 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 122 flow [2024-02-07 19:00:48,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 19:00:48,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:48,336 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-02-07 19:00:48,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:00:48,337 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 28 more)] === [2024-02-07 19:00:48,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash -222852793, now seen corresponding path program 1 times [2024-02-07 19:00:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677872873] [2024-02-07 19:00:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:48,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:00:48,352 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:00:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:00:48,364 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:00:48,365 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:00:48,365 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2024-02-07 19:00:48,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 31 remaining) [2024-02-07 19:00:48,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 31 remaining) [2024-02-07 19:00:48,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 31 remaining) [2024-02-07 19:00:48,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 31 remaining) [2024-02-07 19:00:48,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 31 remaining) [2024-02-07 19:00:48,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 31 remaining) [2024-02-07 19:00:48,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 31 remaining) [2024-02-07 19:00:48,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 31 remaining) [2024-02-07 19:00:48,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 31 remaining) [2024-02-07 19:00:48,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (20 of 31 remaining) [2024-02-07 19:00:48,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 31 remaining) [2024-02-07 19:00:48,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 31 remaining) [2024-02-07 19:00:48,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 31 remaining) [2024-02-07 19:00:48,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 31 remaining) [2024-02-07 19:00:48,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 31 remaining) [2024-02-07 19:00:48,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 31 remaining) [2024-02-07 19:00:48,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 31 remaining) [2024-02-07 19:00:48,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 31 remaining) [2024-02-07 19:00:48,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 31 remaining) [2024-02-07 19:00:48,369 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (10 of 31 remaining) [2024-02-07 19:00:48,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 31 remaining) [2024-02-07 19:00:48,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 31 remaining) [2024-02-07 19:00:48,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 31 remaining) [2024-02-07 19:00:48,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 31 remaining) [2024-02-07 19:00:48,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 31 remaining) [2024-02-07 19:00:48,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 31 remaining) [2024-02-07 19:00:48,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 31 remaining) [2024-02-07 19:00:48,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 31 remaining) [2024-02-07 19:00:48,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 31 remaining) [2024-02-07 19:00:48,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (0 of 31 remaining) [2024-02-07 19:00:48,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:00:48,372 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-07 19:00:48,373 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:00:48,373 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:00:48,410 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:00:48,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 95 transitions, 208 flow [2024-02-07 19:00:48,425 INFO L124 PetriNetUnfolderBase]: 3/103 cut-off events. [2024-02-07 19:00:48,425 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-07 19:00:48,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 103 events. 3/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 385 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2024-02-07 19:00:48,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 95 transitions, 208 flow [2024-02-07 19:00:48,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 95 transitions, 208 flow [2024-02-07 19:00:48,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:00:48,430 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;@79a111bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:00:48,430 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-02-07 19:00:48,432 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:00:48,432 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-07 19:00:48,432 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:00:48,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:48,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:00:48,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:00:48,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash 344808070, now seen corresponding path program 1 times [2024-02-07 19:00:48,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:48,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118569610] [2024-02-07 19:00:48,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:48,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:48,465 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 19:00:48,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:48,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118569610] [2024-02-07 19:00:48,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118569610] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:48,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:48,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:48,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283441708] [2024-02-07 19:00:48,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:48,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:48,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:48,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:48,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:48,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 95 [2024-02-07 19:00:48,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 95 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 19:00:48,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:48,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 95 [2024-02-07 19:00:48,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:50,848 INFO L124 PetriNetUnfolderBase]: 15325/26029 cut-off events. [2024-02-07 19:00:50,848 INFO L125 PetriNetUnfolderBase]: For 1018/1018 co-relation queries the response was YES. [2024-02-07 19:00:50,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47330 conditions, 26029 events. 15325/26029 cut-off events. For 1018/1018 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 223780 event pairs, 11416 based on Foata normal form. 1398/21884 useless extension candidates. Maximal degree in co-relation 32601. Up to 14140 conditions per place. [2024-02-07 19:00:51,107 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 64 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2024-02-07 19:00:51,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 113 transitions, 388 flow [2024-02-07 19:00:51,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:51,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:51,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 218 transitions. [2024-02-07 19:00:51,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7649122807017544 [2024-02-07 19:00:51,110 INFO L175 Difference]: Start difference. First operand has 99 places, 95 transitions, 208 flow. Second operand 3 states and 218 transitions. [2024-02-07 19:00:51,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 113 transitions, 388 flow [2024-02-07 19:00:51,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 113 transitions, 384 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-02-07 19:00:51,115 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 194 flow [2024-02-07 19:00:51,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2024-02-07 19:00:51,116 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -6 predicate places. [2024-02-07 19:00:51,116 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 194 flow [2024-02-07 19:00:51,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 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 19:00:51,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:51,117 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:51,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:00:51,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:00:51,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:51,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1413744917, now seen corresponding path program 1 times [2024-02-07 19:00:51,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:51,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558567687] [2024-02-07 19:00:51,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:51,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:51,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-07 19:00:51,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:51,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558567687] [2024-02-07 19:00:51,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558567687] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:51,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:51,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:51,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111422688] [2024-02-07 19:00:51,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:51,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:51,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:51,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:51,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:51,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 95 [2024-02-07 19:00:51,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 194 flow. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 19:00:51,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:51,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 95 [2024-02-07 19:00:51,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:53,415 INFO L124 PetriNetUnfolderBase]: 14971/26815 cut-off events. [2024-02-07 19:00:53,416 INFO L125 PetriNetUnfolderBase]: For 1578/1578 co-relation queries the response was YES. [2024-02-07 19:00:53,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48972 conditions, 26815 events. 14971/26815 cut-off events. For 1578/1578 co-relation queries the response was YES. Maximal size of possible extension queue 1236. Compared 246750 event pairs, 10345 based on Foata normal form. 1374/22680 useless extension candidates. Maximal degree in co-relation 27584. Up to 14158 conditions per place. [2024-02-07 19:00:53,636 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 63 selfloop transitions, 2 changer transitions 0/108 dead transitions. [2024-02-07 19:00:53,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 108 transitions, 375 flow [2024-02-07 19:00:53,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:00:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:00:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2024-02-07 19:00:53,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2024-02-07 19:00:53,638 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 194 flow. Second operand 3 states and 210 transitions. [2024-02-07 19:00:53,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 108 transitions, 375 flow [2024-02-07 19:00:53,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 108 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:00:53,642 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 186 flow [2024-02-07 19:00:53,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-02-07 19:00:53,642 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -10 predicate places. [2024-02-07 19:00:53,643 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 186 flow [2024-02-07 19:00:53,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 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 19:00:53,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:53,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:53,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:00:53,643 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:00:53,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:53,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1263605331, now seen corresponding path program 1 times [2024-02-07 19:00:53,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:53,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178109069] [2024-02-07 19:00:53,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:53,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:53,697 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 19:00:53,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178109069] [2024-02-07 19:00:53,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178109069] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:53,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:53,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:00:53,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356402834] [2024-02-07 19:00:53,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:53,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:00:53,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:53,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:00:53,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:00:53,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 95 [2024-02-07 19:00:53,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 19:00:53,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:53,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 95 [2024-02-07 19:00:53,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:00:57,783 INFO L124 PetriNetUnfolderBase]: 35080/59986 cut-off events. [2024-02-07 19:00:57,784 INFO L125 PetriNetUnfolderBase]: For 2752/2752 co-relation queries the response was YES. [2024-02-07 19:00:57,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111975 conditions, 59986 events. 35080/59986 cut-off events. For 2752/2752 co-relation queries the response was YES. Maximal size of possible extension queue 2382. Compared 557190 event pairs, 18670 based on Foata normal form. 0/47322 useless extension candidates. Maximal degree in co-relation 110485. Up to 19480 conditions per place. [2024-02-07 19:00:58,228 INFO L140 encePairwiseOnDemand]: 80/95 looper letters, 104 selfloop transitions, 12 changer transitions 0/149 dead transitions. [2024-02-07 19:00:58,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 149 transitions, 578 flow [2024-02-07 19:00:58,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:00:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:00:58,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 268 transitions. [2024-02-07 19:00:58,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7052631578947368 [2024-02-07 19:00:58,231 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 186 flow. Second operand 4 states and 268 transitions. [2024-02-07 19:00:58,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 149 transitions, 578 flow [2024-02-07 19:00:58,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 149 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:00:58,341 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 273 flow [2024-02-07 19:00:58,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=273, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2024-02-07 19:00:58,342 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -7 predicate places. [2024-02-07 19:00:58,343 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 273 flow [2024-02-07 19:00:58,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.25) internal successors, (157), 4 states have internal predecessors, (157), 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 19:00:58,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:00:58,343 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2024-02-07 19:00:58,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:00:58,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:00:58,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:00:58,344 INFO L85 PathProgramCache]: Analyzing trace with hash -482350969, now seen corresponding path program 1 times [2024-02-07 19:00:58,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:00:58,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981370167] [2024-02-07 19:00:58,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:00:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:00:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:00:58,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-02-07 19:00:58,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:00:58,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981370167] [2024-02-07 19:00:58,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981370167] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:00:58,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:00:58,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:00:58,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831420662] [2024-02-07 19:00:58,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:00:58,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:00:58,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:00:58,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:00:58,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:00:58,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 95 [2024-02-07 19:00:58,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 19:00:58,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:00:58,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 95 [2024-02-07 19:00:58,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:01,522 INFO L124 PetriNetUnfolderBase]: 22343/41409 cut-off events. [2024-02-07 19:01:01,526 INFO L125 PetriNetUnfolderBase]: For 11090/11762 co-relation queries the response was YES. [2024-02-07 19:01:01,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84860 conditions, 41409 events. 22343/41409 cut-off events. For 11090/11762 co-relation queries the response was YES. Maximal size of possible extension queue 1872. Compared 415784 event pairs, 14628 based on Foata normal form. 1878/38469 useless extension candidates. Maximal degree in co-relation 36851. Up to 22026 conditions per place. [2024-02-07 19:01:01,891 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 72 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2024-02-07 19:01:01,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 117 transitions, 498 flow [2024-02-07 19:01:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:01:01,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:01:01,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2024-02-07 19:01:01,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2024-02-07 19:01:01,893 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 273 flow. Second operand 3 states and 209 transitions. [2024-02-07 19:01:01,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 117 transitions, 498 flow [2024-02-07 19:01:01,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 117 transitions, 492 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:01:01,900 INFO L231 Difference]: Finished difference. Result has 89 places, 89 transitions, 268 flow [2024-02-07 19:01:01,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=89, PETRI_TRANSITIONS=89} [2024-02-07 19:01:01,901 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -10 predicate places. [2024-02-07 19:01:01,901 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 89 transitions, 268 flow [2024-02-07 19:01:01,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 19:01:01,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:01,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:01:01,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:01:01,902 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:01:01,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:01,903 INFO L85 PathProgramCache]: Analyzing trace with hash 517060012, now seen corresponding path program 1 times [2024-02-07 19:01:01,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:01,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017314587] [2024-02-07 19:01:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:01,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:01,952 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 19:01:01,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:01,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017314587] [2024-02-07 19:01:01,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017314587] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:01,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:01,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:01,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928082389] [2024-02-07 19:01:01,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:01,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:01:01,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:01,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:01:01,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:01:01,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 95 [2024-02-07 19:01:01,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 89 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 19:01:01,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:01,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 95 [2024-02-07 19:01:01,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:01:05,007 INFO L124 PetriNetUnfolderBase]: 21932/38928 cut-off events. [2024-02-07 19:01:05,008 INFO L125 PetriNetUnfolderBase]: For 11016/11566 co-relation queries the response was YES. [2024-02-07 19:01:05,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81287 conditions, 38928 events. 21932/38928 cut-off events. For 11016/11566 co-relation queries the response was YES. Maximal size of possible extension queue 1872. Compared 367195 event pairs, 7786 based on Foata normal form. 924/35456 useless extension candidates. Maximal degree in co-relation 81116. Up to 18540 conditions per place. [2024-02-07 19:01:05,435 INFO L140 encePairwiseOnDemand]: 83/95 looper letters, 105 selfloop transitions, 12 changer transitions 0/156 dead transitions. [2024-02-07 19:01:05,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 156 transitions, 727 flow [2024-02-07 19:01:05,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:01:05,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:01:05,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 336 transitions. [2024-02-07 19:01:05,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7073684210526315 [2024-02-07 19:01:05,450 INFO L175 Difference]: Start difference. First operand has 89 places, 89 transitions, 268 flow. Second operand 5 states and 336 transitions. [2024-02-07 19:01:05,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 156 transitions, 727 flow [2024-02-07 19:01:05,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 156 transitions, 707 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:01:05,468 INFO L231 Difference]: Finished difference. Result has 94 places, 98 transitions, 378 flow [2024-02-07 19:01:05,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=94, PETRI_TRANSITIONS=98} [2024-02-07 19:01:05,473 INFO L281 CegarLoopForPetriNet]: 99 programPoint places, -5 predicate places. [2024-02-07 19:01:05,475 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 98 transitions, 378 flow [2024-02-07 19:01:05,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 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 19:01:05,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:05,476 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-02-07 19:01:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:01:05,492 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-02-07 19:01:05,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2067979769, now seen corresponding path program 1 times [2024-02-07 19:01:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:05,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983065453] [2024-02-07 19:01:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:05,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:05,505 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:01:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:01:05,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:01:05,534 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:01:05,534 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-02-07 19:01:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 41 remaining) [2024-02-07 19:01:05,534 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 41 remaining) [2024-02-07 19:01:05,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 41 remaining) [2024-02-07 19:01:05,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 41 remaining) [2024-02-07 19:01:05,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 41 remaining) [2024-02-07 19:01:05,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 41 remaining) [2024-02-07 19:01:05,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 41 remaining) [2024-02-07 19:01:05,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 41 remaining) [2024-02-07 19:01:05,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 41 remaining) [2024-02-07 19:01:05,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (30 of 41 remaining) [2024-02-07 19:01:05,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 41 remaining) [2024-02-07 19:01:05,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 41 remaining) [2024-02-07 19:01:05,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 41 remaining) [2024-02-07 19:01:05,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 41 remaining) [2024-02-07 19:01:05,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 41 remaining) [2024-02-07 19:01:05,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 41 remaining) [2024-02-07 19:01:05,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 41 remaining) [2024-02-07 19:01:05,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 41 remaining) [2024-02-07 19:01:05,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 41 remaining) [2024-02-07 19:01:05,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (20 of 41 remaining) [2024-02-07 19:01:05,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 41 remaining) [2024-02-07 19:01:05,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 41 remaining) [2024-02-07 19:01:05,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 41 remaining) [2024-02-07 19:01:05,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 41 remaining) [2024-02-07 19:01:05,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 41 remaining) [2024-02-07 19:01:05,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 41 remaining) [2024-02-07 19:01:05,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 41 remaining) [2024-02-07 19:01:05,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 41 remaining) [2024-02-07 19:01:05,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 41 remaining) [2024-02-07 19:01:05,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (10 of 41 remaining) [2024-02-07 19:01:05,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 41 remaining) [2024-02-07 19:01:05,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 41 remaining) [2024-02-07 19:01:05,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 41 remaining) [2024-02-07 19:01:05,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 41 remaining) [2024-02-07 19:01:05,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 41 remaining) [2024-02-07 19:01:05,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 41 remaining) [2024-02-07 19:01:05,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 41 remaining) [2024-02-07 19:01:05,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 41 remaining) [2024-02-07 19:01:05,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 41 remaining) [2024-02-07 19:01:05,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONERROR_FUNCTION (0 of 41 remaining) [2024-02-07 19:01:05,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 19:01:05,560 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-02-07 19:01:05,560 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:01:05,561 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-02-07 19:01:05,660 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:01:05,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 125 transitions, 278 flow [2024-02-07 19:01:05,699 INFO L124 PetriNetUnfolderBase]: 4/136 cut-off events. [2024-02-07 19:01:05,700 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-02-07 19:01:05,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 136 events. 4/136 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 579 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 119. Up to 5 conditions per place. [2024-02-07 19:01:05,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 125 transitions, 278 flow [2024-02-07 19:01:05,706 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 125 transitions, 278 flow [2024-02-07 19:01:05,708 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:01:05,708 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;@79a111bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:01:05,709 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2024-02-07 19:01:05,710 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:01:05,714 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2024-02-07 19:01:05,714 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:01:05,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:01:05,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:01:05,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 48 more)] === [2024-02-07 19:01:05,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:01:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash 464124992, now seen corresponding path program 1 times [2024-02-07 19:01:05,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:01:05,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200670319] [2024-02-07 19:01:05,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:01:05,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:01:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:01:05,782 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 19:01:05,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:01:05,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200670319] [2024-02-07 19:01:05,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200670319] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:01:05,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:01:05,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:01:05,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720797258] [2024-02-07 19:01:05,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:01:05,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:01:05,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:01:05,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:01:05,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:01:05,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 125 [2024-02-07 19:01:05,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 125 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 65.66666666666667) internal successors, (197), 3 states have internal predecessors, (197), 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 19:01:05,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:01:05,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 125 [2024-02-07 19:01:05,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand