./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/03_incdec-pthread.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/03_incdec-pthread.i ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/03_incdec-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-?-80b1b13-m [2024-01-31 16:41:38,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 16:41:38,814 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 16:41:38,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 16:41:38,822 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 16:41:38,849 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 16:41:38,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 16:41:38,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 16:41:38,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 16:41:38,854 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 16:41:38,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 16:41:38,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 16:41:38,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 16:41:38,857 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 16:41:38,857 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 16:41:38,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 16:41:38,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 16:41:38,857 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 16:41:38,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 16:41:38,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 16:41:38,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 16:41:38,859 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 16:41:38,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 16:41:38,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 16:41:38,859 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 16:41:38,860 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 16:41:38,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 16:41:38,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 16:41:38,861 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 16:41:38,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 16:41:38,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 16:41:38,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 16:41:38,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:41:38,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 16:41:38,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 16:41:38,863 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 16:41:38,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 16:41:38,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 16:41:38,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 16:41:38,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 16:41:38,864 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 16:41:38,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 16:41:38,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 16:41:38,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 16:41:39,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 16:41:39,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 16:41:39,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 16:41:39,166 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 16:41:39,167 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 16:41:39,168 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i [2024-01-31 16:41:40,421 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 16:41:40,683 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 16:41:40,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i [2024-01-31 16:41:40,712 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164e08fcb/d3025aa52abe495fb08d33630aa83b08/FLAGd8f1ab401 [2024-01-31 16:41:40,724 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/164e08fcb/d3025aa52abe495fb08d33630aa83b08 [2024-01-31 16:41:40,726 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 16:41:40,726 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 16:41:40,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/03_incdec-pthread.yml/witness.yml [2024-01-31 16:41:40,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 16:41:40,841 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 16:41:40,843 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 16:41:40,843 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 16:41:40,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 16:41:40,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:41:40" (1/2) ... [2024-01-31 16:41:40,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1548143d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:40, skipping insertion in model container [2024-01-31 16:41:40,849 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 04:41:40" (1/2) ... [2024-01-31 16:41:40,850 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@f59068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 04:41:40, skipping insertion in model container [2024-01-31 16:41:40,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:40" (2/2) ... [2024-01-31 16:41:40,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1548143d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:40, skipping insertion in model container [2024-01-31 16:41:40,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:40" (2/2) ... [2024-01-31 16:41:40,852 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 16:41:40,935 INFO L96 nessWitnessExtractor]: Found the following entries in the witness: [2024-01-31 16:41:40,936 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (1U <= dec_v) && (dec_v != 0U) [2024-01-31 16:41:40,936 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] (1U <= dec_v) && (dec_v != 0U) [2024-01-31 16:41:40,937 INFO L98 nessWitnessExtractor]: Location invariant after [L719-L719] (unsigned long )arg == 0UL [2024-01-31 16:41:40,937 INFO L98 nessWitnessExtractor]: Location invariant after [L700-L700] (inc_v <= 4294967294U) && (inc_v != 4294967295U) [2024-01-31 16:41:40,937 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] (inc_v <= 4294967294U) && (inc_v != 4294967295U) [2024-01-31 16:41:40,938 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] (((inc_v <= 4294967294U) && ((unsigned int )value <= 4294967294U)) && ((unsigned int )dec_flag == 0U)) && (inc_v != 4294967295U) [2024-01-31 16:41:40,938 INFO L98 nessWitnessExtractor]: Location invariant after [L714-L714] (1U <= dec_v) && (dec_v != 0U) [2024-01-31 16:41:40,938 INFO L98 nessWitnessExtractor]: Location invariant before [L714-L714] ((((1U <= dec_v) && (1U <= (unsigned int )value)) && ((unsigned int )inc_flag == 0U)) && (dec_v != 0U)) && ((unsigned int )value != 0U) [2024-01-31 16:41:40,938 INFO L98 nessWitnessExtractor]: Location invariant before [L700-L700] (inc_v <= 4294967294U) && (inc_v != 4294967295U) [2024-01-31 16:41:40,983 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 16:41:41,310 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/03_incdec-pthread.i[30745,30758] [2024-01-31 16:41:41,339 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/03_incdec-pthread.i[31120,31133] [2024-01-31 16:41:41,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:41:41,358 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 16:41:41,458 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/03_incdec-pthread.i[30745,30758] Start Parsing Local Start Parsing Local [2024-01-31 16:41:41,478 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local [2024-01-31 16:41:41,481 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/03_incdec-pthread.i[31120,31133] Start Parsing Local Start Parsing Local [2024-01-31 16:41:41,483 WARN L424 MainDispatcher]: Unable to annotate ; with a witness entry Start Parsing Local [2024-01-31 16:41:41,487 WARN L424 MainDispatcher]: Unable to annotate int with a witness entry [2024-01-31 16:41:41,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 16:41:41,516 INFO L208 MainTranslator]: Completed translation [2024-01-31 16:41:41,517 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41 WrapperNode [2024-01-31 16:41:41,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 16:41:41,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 16:41:41,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 16:41:41,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 16:41:41,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,553 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 105 [2024-01-31 16:41:41,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 16:41:41,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 16:41:41,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 16:41:41,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 16:41:41,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,565 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,574 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]. [2024-01-31 16:41:41,575 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,575 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,584 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 16:41:41,585 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 16:41:41,585 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 16:41:41,585 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 16:41:41,586 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (1/1) ... [2024-01-31 16:41:41,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 16:41:41,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 16:41:41,641 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) [2024-01-31 16:41:41,646 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 [2024-01-31 16:41:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-01-31 16:41:41,680 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-01-31 16:41:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 16:41:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 16:41:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 16:41:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-01-31 16:41:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 16:41:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 16:41:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 16:41:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 16:41:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 16:41:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 16:41:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-01-31 16:41:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 16:41:41,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 16:41:41,683 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 16:41:41,793 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 16:41:41,795 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 16:41:42,098 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 16:41:42,098 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 16:41:42,205 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 16:41:42,205 INFO L320 CfgBuilder]: Removed 1 assume(true) statements. [2024-01-31 16:41:42,206 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:41:42 BoogieIcfgContainer [2024-01-31 16:41:42,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 16:41:42,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 16:41:42,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 16:41:42,212 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 16:41:42,212 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 04:41:40" (1/4) ... [2024-01-31 16:41:42,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693badc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 04:41:42, skipping insertion in model container [2024-01-31 16:41:42,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 04:41:40" (2/4) ... [2024-01-31 16:41:42,213 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693badc7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:41:42, skipping insertion in model container [2024-01-31 16:41:42,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 04:41:41" (3/4) ... [2024-01-31 16:41:42,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693badc7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 04:41:42, skipping insertion in model container [2024-01-31 16:41:42,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 04:41:42" (4/4) ... [2024-01-31 16:41:42,215 INFO L112 eAbstractionObserver]: Analyzing ICFG 03_incdec-pthread.i [2024-01-31 16:41:42,235 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 16:41:42,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-01-31 16:41:42,235 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 16:41:42,291 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:41:42,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 54 places, 56 transitions, 116 flow [2024-01-31 16:41:42,355 INFO L124 PetriNetUnfolderBase]: 5/58 cut-off events. [2024-01-31 16:41:42,355 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:41:42,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 58 events. 5/58 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 143 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2024-01-31 16:41:42,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 56 transitions, 116 flow [2024-01-31 16:41:42,365 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 56 transitions, 116 flow [2024-01-31 16:41:42,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:41:42,390 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;@5f4aca3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:41:42,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-01-31 16:41:42,395 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:41:42,395 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2024-01-31 16:41:42,395 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-01-31 16:41:42,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:42,396 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-01-31 16:41:42,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 14 more)] === [2024-01-31 16:41:42,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash 58264959, now seen corresponding path program 1 times [2024-01-31 16:41:42,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:42,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375329381] [2024-01-31 16:41:42,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:42,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:41:42,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:41:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:41:42,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:41:42,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:41:42,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-01-31 16:41:42,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 17 remaining) [2024-01-31 16:41:42,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 17 remaining) [2024-01-31 16:41:42,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 17 remaining) [2024-01-31 16:41:42,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 17 remaining) [2024-01-31 16:41:42,688 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 17 remaining) [2024-01-31 16:41:42,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 17 remaining) [2024-01-31 16:41:42,689 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (9 of 17 remaining) [2024-01-31 16:41:42,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (8 of 17 remaining) [2024-01-31 16:41:42,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 17 remaining) [2024-01-31 16:41:42,690 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 17 remaining) [2024-01-31 16:41:42,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 17 remaining) [2024-01-31 16:41:42,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 17 remaining) [2024-01-31 16:41:42,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 17 remaining) [2024-01-31 16:41:42,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 17 remaining) [2024-01-31 16:41:42,691 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (1 of 17 remaining) [2024-01-31 16:41:42,692 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 17 remaining) [2024-01-31 16:41:42,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 16:41:42,693 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:41:42,696 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:41:42,696 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-01-31 16:41:42,736 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:41:42,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 107 transitions, 224 flow [2024-01-31 16:41:42,767 INFO L124 PetriNetUnfolderBase]: 10/112 cut-off events. [2024-01-31 16:41:42,769 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:41:42,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 112 events. 10/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 439 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 103. Up to 3 conditions per place. [2024-01-31 16:41:42,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 107 transitions, 224 flow [2024-01-31 16:41:42,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 107 transitions, 224 flow [2024-01-31 16:41:42,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:41:42,780 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;@5f4aca3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:41:42,780 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-01-31 16:41:42,787 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:41:42,787 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-01-31 16:41:42,787 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 16:41:42,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:42,787 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-01-31 16:41:42,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 22 more)] === [2024-01-31 16:41:42,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:42,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1245952758, now seen corresponding path program 1 times [2024-01-31 16:41:42,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:42,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62895014] [2024-01-31 16:41:42,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:42,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:42,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:41:42,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:41:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:41:42,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:41:42,833 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:41:42,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-01-31 16:41:42,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 25 remaining) [2024-01-31 16:41:42,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 25 remaining) [2024-01-31 16:41:42,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 25 remaining) [2024-01-31 16:41:42,834 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 25 remaining) [2024-01-31 16:41:42,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 25 remaining) [2024-01-31 16:41:42,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 25 remaining) [2024-01-31 16:41:42,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (17 of 25 remaining) [2024-01-31 16:41:42,835 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (16 of 25 remaining) [2024-01-31 16:41:42,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 25 remaining) [2024-01-31 16:41:42,836 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 25 remaining) [2024-01-31 16:41:42,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 25 remaining) [2024-01-31 16:41:42,837 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 25 remaining) [2024-01-31 16:41:42,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 25 remaining) [2024-01-31 16:41:42,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 25 remaining) [2024-01-31 16:41:42,838 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (9 of 25 remaining) [2024-01-31 16:41:42,839 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (8 of 25 remaining) [2024-01-31 16:41:42,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 25 remaining) [2024-01-31 16:41:42,840 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 25 remaining) [2024-01-31 16:41:42,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 25 remaining) [2024-01-31 16:41:42,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 25 remaining) [2024-01-31 16:41:42,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 25 remaining) [2024-01-31 16:41:42,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 25 remaining) [2024-01-31 16:41:42,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (1 of 25 remaining) [2024-01-31 16:41:42,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 25 remaining) [2024-01-31 16:41:42,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 16:41:42,843 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2024-01-31 16:41:42,843 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:41:42,843 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-01-31 16:41:42,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:41:42,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 158 transitions, 334 flow [2024-01-31 16:41:42,947 INFO L124 PetriNetUnfolderBase]: 15/166 cut-off events. [2024-01-31 16:41:42,947 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:41:42,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 15/166 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 776 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 153. Up to 4 conditions per place. [2024-01-31 16:41:42,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 158 transitions, 334 flow [2024-01-31 16:41:42,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 158 transitions, 334 flow [2024-01-31 16:41:42,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:41:42,961 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;@5f4aca3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:41:42,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-01-31 16:41:42,970 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:41:42,970 INFO L124 PetriNetUnfolderBase]: 1/50 cut-off events. [2024-01-31 16:41:42,971 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-01-31 16:41:42,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:42,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:42,971 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:41:42,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:42,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1971237607, now seen corresponding path program 1 times [2024-01-31 16:41:42,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:42,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290447296] [2024-01-31 16:41:42,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:42,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:43,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:43,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290447296] [2024-01-31 16:41:43,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290447296] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:43,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:43,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:41:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738737983] [2024-01-31 16:41:43,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:43,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:41:43,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:41:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:41:43,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 158 [2024-01-31 16:41:43,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 158 transitions, 334 flow. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2024-01-31 16:41:43,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:43,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 158 [2024-01-31 16:41:43,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:41:52,574 INFO L124 PetriNetUnfolderBase]: 71018/127007 cut-off events. [2024-01-31 16:41:52,575 INFO L125 PetriNetUnfolderBase]: For 2275/2275 co-relation queries the response was YES. [2024-01-31 16:41:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225468 conditions, 127007 events. 71018/127007 cut-off events. For 2275/2275 co-relation queries the response was YES. Maximal size of possible extension queue 5157. Compared 1349385 event pairs, 26157 based on Foata normal form. 6756/114938 useless extension candidates. Maximal degree in co-relation 46814. Up to 85968 conditions per place. [2024-01-31 16:41:53,691 INFO L140 encePairwiseOnDemand]: 141/158 looper letters, 108 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2024-01-31 16:41:53,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 185 transitions, 624 flow [2024-01-31 16:41:53,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 16:41:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 16:41:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2024-01-31 16:41:53,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7278481012658228 [2024-01-31 16:41:53,712 INFO L175 Difference]: Start difference. First operand has 150 places, 158 transitions, 334 flow. Second operand 3 states and 345 transitions. [2024-01-31 16:41:53,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 185 transitions, 624 flow [2024-01-31 16:41:53,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 185 transitions, 620 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 16:41:53,731 INFO L231 Difference]: Finished difference. Result has 152 places, 154 transitions, 354 flow [2024-01-31 16:41:53,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=354, PETRI_PLACES=152, PETRI_TRANSITIONS=154} [2024-01-31 16:41:53,737 INFO L281 CegarLoopForPetriNet]: 150 programPoint places, 2 predicate places. [2024-01-31 16:41:53,739 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 154 transitions, 354 flow [2024-01-31 16:41:53,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2024-01-31 16:41:53,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:41:53,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:41:53,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 16:41:53,741 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:41:53,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:41:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1406611767, now seen corresponding path program 1 times [2024-01-31 16:41:53,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:41:53,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936325897] [2024-01-31 16:41:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:41:53,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:41:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:41:53,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:41:53,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:41:53,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936325897] [2024-01-31 16:41:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936325897] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:41:53,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:41:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:41:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865432300] [2024-01-31 16:41:53,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:41:53,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 16:41:53,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:41:53,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 16:41:53,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 16:41:54,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 158 [2024-01-31 16:41:54,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 154 transitions, 354 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2024-01-31 16:41:54,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:41:54,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 158 [2024-01-31 16:41:54,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 16:42:04,707 INFO L124 PetriNetUnfolderBase]: 85753/152021 cut-off events. [2024-01-31 16:42:04,707 INFO L125 PetriNetUnfolderBase]: For 6904/6904 co-relation queries the response was YES. [2024-01-31 16:42:05,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280521 conditions, 152021 events. 85753/152021 cut-off events. For 6904/6904 co-relation queries the response was YES. Maximal size of possible extension queue 6294. Compared 1647488 event pairs, 27548 based on Foata normal form. 2853/133928 useless extension candidates. Maximal degree in co-relation 178577. Up to 65951 conditions per place. [2024-01-31 16:42:05,698 INFO L140 encePairwiseOnDemand]: 150/158 looper letters, 185 selfloop transitions, 10 changer transitions 0/266 dead transitions. [2024-01-31 16:42:05,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 266 transitions, 1016 flow [2024-01-31 16:42:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 16:42:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 16:42:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2024-01-31 16:42:05,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6987341772151898 [2024-01-31 16:42:05,701 INFO L175 Difference]: Start difference. First operand has 152 places, 154 transitions, 354 flow. Second operand 5 states and 552 transitions. [2024-01-31 16:42:05,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 266 transitions, 1016 flow [2024-01-31 16:42:05,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 266 transitions, 1010 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 16:42:05,711 INFO L231 Difference]: Finished difference. Result has 156 places, 158 transitions, 394 flow [2024-01-31 16:42:05,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=156, PETRI_TRANSITIONS=158} [2024-01-31 16:42:05,712 INFO L281 CegarLoopForPetriNet]: 150 programPoint places, 6 predicate places. [2024-01-31 16:42:05,712 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 158 transitions, 394 flow [2024-01-31 16:42:05,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 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) [2024-01-31 16:42:05,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:05,713 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-01-31 16:42:05,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 16:42:05,713 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 30 more)] === [2024-01-31 16:42:05,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:05,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1852119842, now seen corresponding path program 1 times [2024-01-31 16:42:05,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:05,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461302059] [2024-01-31 16:42:05,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:05,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:05,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-01-31 16:42:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-01-31 16:42:05,735 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-01-31 16:42:05,735 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-01-31 16:42:05,735 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-01-31 16:42:05,735 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 33 remaining) [2024-01-31 16:42:05,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 33 remaining) [2024-01-31 16:42:05,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 33 remaining) [2024-01-31 16:42:05,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 33 remaining) [2024-01-31 16:42:05,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 33 remaining) [2024-01-31 16:42:05,736 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 33 remaining) [2024-01-31 16:42:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (25 of 33 remaining) [2024-01-31 16:42:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (24 of 33 remaining) [2024-01-31 16:42:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 33 remaining) [2024-01-31 16:42:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 33 remaining) [2024-01-31 16:42:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 33 remaining) [2024-01-31 16:42:05,737 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 33 remaining) [2024-01-31 16:42:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 33 remaining) [2024-01-31 16:42:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 33 remaining) [2024-01-31 16:42:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (17 of 33 remaining) [2024-01-31 16:42:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (16 of 33 remaining) [2024-01-31 16:42:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 33 remaining) [2024-01-31 16:42:05,738 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 33 remaining) [2024-01-31 16:42:05,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 33 remaining) [2024-01-31 16:42:05,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 33 remaining) [2024-01-31 16:42:05,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 33 remaining) [2024-01-31 16:42:05,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 33 remaining) [2024-01-31 16:42:05,739 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (9 of 33 remaining) [2024-01-31 16:42:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (8 of 33 remaining) [2024-01-31 16:42:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 33 remaining) [2024-01-31 16:42:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 33 remaining) [2024-01-31 16:42:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 33 remaining) [2024-01-31 16:42:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 33 remaining) [2024-01-31 16:42:05,740 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 33 remaining) [2024-01-31 16:42:05,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 33 remaining) [2024-01-31 16:42:05,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONERROR_FUNCTION (1 of 33 remaining) [2024-01-31 16:42:05,741 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (0 of 33 remaining) [2024-01-31 16:42:05,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 16:42:05,741 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-01-31 16:42:05,742 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-01-31 16:42:05,742 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-01-31 16:42:05,786 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-01-31 16:42:05,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 209 transitions, 446 flow [2024-01-31 16:42:05,809 INFO L124 PetriNetUnfolderBase]: 20/220 cut-off events. [2024-01-31 16:42:05,810 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-01-31 16:42:05,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 220 events. 20/220 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1127 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 203. Up to 5 conditions per place. [2024-01-31 16:42:05,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 209 transitions, 446 flow [2024-01-31 16:42:05,814 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 209 transitions, 446 flow [2024-01-31 16:42:05,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 16:42:05,815 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;@5f4aca3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 16:42:05,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-01-31 16:42:05,819 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 16:42:05,819 INFO L124 PetriNetUnfolderBase]: 1/50 cut-off events. [2024-01-31 16:42:05,819 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-01-31 16:42:05,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 16:42:05,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 16:42:05,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT === [thr1Err4ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thr1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (and 38 more)] === [2024-01-31 16:42:05,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 16:42:05,820 INFO L85 PathProgramCache]: Analyzing trace with hash -606651318, now seen corresponding path program 1 times [2024-01-31 16:42:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 16:42:05,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277180896] [2024-01-31 16:42:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 16:42:05,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 16:42:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 16:42:05,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 16:42:05,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 16:42:05,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277180896] [2024-01-31 16:42:05,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277180896] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 16:42:05,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 16:42:05,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 16:42:05,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695486649] [2024-01-31 16:42:05,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 16:42:05,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 16:42:05,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 16:42:05,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 16:42:05,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 16:42:05,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 209 [2024-01-31 16:42:05,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 209 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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) [2024-01-31 16:42:05,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 16:42:05,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 209 [2024-01-31 16:42:05,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand