./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.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/safe010_tso.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-wmm/safe010_tso.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe010_tso.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 19:03:47,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:03:48,006 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:03:48,011 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:03:48,012 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:03:48,068 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:03:48,072 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:03:48,073 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:03:48,074 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:03:48,074 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:03:48,075 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:03:48,075 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:03:48,076 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:03:48,080 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:03:48,080 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:03:48,080 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:03:48,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:03:48,082 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:03:48,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:03:48,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:03:48,083 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:03:48,083 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:03:48,083 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:03:48,084 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:03:48,084 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:03:48,084 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:03:48,085 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:03:48,085 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:03:48,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:03:48,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:03:48,087 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:03:48,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:03:48,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:03:48,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:03:48,088 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:03:48,088 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:03:48,088 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:03:48,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:03:48,089 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:03:48,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:03:48,089 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:03:48,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:03:48,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:03:48,090 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:03:48,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:03:48,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:03:48,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:03:48,429 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:03:48,429 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:03:48,431 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2024-02-07 19:03:49,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:03:50,098 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:03:50,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe010_tso.i [2024-02-07 19:03:50,130 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29857b3b/9166a60bd51041d789722f4f12f45936/FLAG4903a700f [2024-02-07 19:03:50,147 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a29857b3b/9166a60bd51041d789722f4f12f45936 [2024-02-07 19:03:50,149 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:03:50,151 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:03:50,152 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe010_tso.yml/witness.yml [2024-02-07 19:03:50,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:03:50,248 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:03:50,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:03:50,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:03:50,254 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:03:50,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:03:50" (1/2) ... [2024-02-07 19:03:50,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63784181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:03:50, skipping insertion in model container [2024-02-07 19:03:50,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:03:50" (1/2) ... [2024-02-07 19:03:50,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@437b7d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:03:50, skipping insertion in model container [2024-02-07 19:03:50,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:03:50" (2/2) ... [2024-02-07 19:03:50,258 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63784181 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50, skipping insertion in model container [2024-02-07 19:03:50,258 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:03:50" (2/2) ... [2024-02-07 19:03:50,258 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:03:50,311 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:03:50,313 INFO L76 edCorrectnessWitness]: Location invariant before [L743-L743] 0 <= __unbuffered_cnt [2024-02-07 19:03:50,313 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 19:03:50,314 INFO L76 edCorrectnessWitness]: Location invariant before [L724-L724] x == 1 [2024-02-07 19:03:50,314 INFO L76 edCorrectnessWitness]: Location invariant before [L770-L770] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:03:50,314 INFO L76 edCorrectnessWitness]: Location invariant before [L771-L771] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:03:50,315 INFO L76 edCorrectnessWitness]: Location invariant before [L744-L744] 1 <= __unbuffered_cnt [2024-02-07 19:03:50,315 INFO L76 edCorrectnessWitness]: Location invariant before [L739-L739] y == 1 [2024-02-07 19:03:50,315 INFO L76 edCorrectnessWitness]: Location invariant before [L763-L763] 0 <= __unbuffered_cnt [2024-02-07 19:03:50,315 INFO L76 edCorrectnessWitness]: Location invariant before [L728-L728] 0 <= __unbuffered_cnt [2024-02-07 19:03:50,315 INFO L76 edCorrectnessWitness]: Location invariant before [L729-L729] 1 <= __unbuffered_cnt [2024-02-07 19:03:50,316 INFO L76 edCorrectnessWitness]: Location invariant before [L769-L769] (((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && (y == 2)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) [2024-02-07 19:03:50,316 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:03:50,316 INFO L76 edCorrectnessWitness]: Location invariant before [L736-L736] ((0 <= __unbuffered_p1_EAX) && (__unbuffered_p1_EAX <= 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) [2024-02-07 19:03:50,316 INFO L76 edCorrectnessWitness]: Location invariant before [L721-L721] y == 2 [2024-02-07 19:03:50,316 INFO L76 edCorrectnessWitness]: Location invariant before [L765-L765] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:03:50,316 INFO L76 edCorrectnessWitness]: Location invariant before [L735-L735] ((0 <= x) && (x <= 1)) && (x == 0 || x == 1) [2024-02-07 19:03:50,360 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:03:50,539 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-wmm/safe010_tso.i[945,958] [2024-02-07 19:03:50,701 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:03:50,709 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 19:03:50,742 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-wmm/safe010_tso.i[945,958] 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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:03:50,778 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:03:50,815 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:03:50,817 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50 WrapperNode [2024-02-07 19:03:50,817 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:03:50,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:03:50,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:03:50,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:03:50,826 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 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,843 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 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,859 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-02-07 19:03:50,862 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:03:50,863 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:03:50,863 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:03:50,863 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:03:50,871 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,880 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,901 INFO L175 MemorySlicer]: Split 4 memory accesses to 3 slices as follows [2, 1, 1]. 50 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-07 19:03:50,901 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,901 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,915 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,929 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:03:50,931 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:03:50,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:03:50,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:03:50,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (1/1) ... [2024-02-07 19:03:50,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:03:50,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:03:51,002 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 19:03:51,022 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 19:03:51,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:03:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:03:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:03:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:03:51,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:03:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:03:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:03:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 19:03:51,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 19:03:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 19:03:51,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 19:03:51,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:03:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:03:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:03:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:03:51,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:03:51,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:03:51,042 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 19:03:51,180 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:03:51,182 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:03:51,345 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:03:51,346 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:03:51,415 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:03:51,416 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:03:51,416 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:03:51 BoogieIcfgContainer [2024-02-07 19:03:51,416 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:03:51,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:03:51,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:03:51,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:03:51,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:03:50" (1/4) ... [2024-02-07 19:03:51,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd2384b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:03:51, skipping insertion in model container [2024-02-07 19:03:51,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:03:50" (2/4) ... [2024-02-07 19:03:51,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd2384b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:03:51, skipping insertion in model container [2024-02-07 19:03:51,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:03:50" (3/4) ... [2024-02-07 19:03:51,422 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bd2384b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:03:51, skipping insertion in model container [2024-02-07 19:03:51,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:03:51" (4/4) ... [2024-02-07 19:03:51,423 INFO L112 eAbstractionObserver]: Analyzing ICFG safe010_tso.i [2024-02-07 19:03:51,438 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:03:51,438 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2024-02-07 19:03:51,438 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:03:51,465 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:03:51,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 46 transitions, 100 flow [2024-02-07 19:03:51,509 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-02-07 19:03:51,510 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:03:51,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 1/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 115 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2024-02-07 19:03:51,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 46 transitions, 100 flow [2024-02-07 19:03:51,515 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 44 transitions, 94 flow [2024-02-07 19:03:51,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:03:51,531 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;@39f12ed8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:03:51,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-02-07 19:03:51,535 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:03:51,535 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-02-07 19:03:51,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:03:51,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:51,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:03:51,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:51,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash 8306012, now seen corresponding path program 1 times [2024-02-07 19:03:51,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:51,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710726627] [2024-02-07 19:03:51,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:51,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:51,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:51,858 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 19:03:51,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:51,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710726627] [2024-02-07 19:03:51,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710726627] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:51,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:51,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:03:51,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136240379] [2024-02-07 19:03:51,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:51,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 19:03:51,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 19:03:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 19:03:51,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-07 19:03:51,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 44 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 19:03:51,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:51,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-07 19:03:51,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:52,105 INFO L124 PetriNetUnfolderBase]: 608/1315 cut-off events. [2024-02-07 19:03:52,105 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-02-07 19:03:52,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2332 conditions, 1315 events. 608/1315 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8798 event pairs, 608 based on Foata normal form. 42/1004 useless extension candidates. Maximal degree in co-relation 2322. Up to 1000 conditions per place. [2024-02-07 19:03:52,119 INFO L140 encePairwiseOnDemand]: 37/46 looper letters, 23 selfloop transitions, 0 changer transitions 0/35 dead transitions. [2024-02-07 19:03:52,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 122 flow [2024-02-07 19:03:52,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 19:03:52,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 19:03:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 60 transitions. [2024-02-07 19:03:52,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-02-07 19:03:52,133 INFO L175 Difference]: Start difference. First operand has 50 places, 44 transitions, 94 flow. Second operand 2 states and 60 transitions. [2024-02-07 19:03:52,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 122 flow [2024-02-07 19:03:52,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:03:52,139 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 74 flow [2024-02-07 19:03:52,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=74, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2024-02-07 19:03:52,145 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2024-02-07 19:03:52,146 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 74 flow [2024-02-07 19:03:52,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 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 19:03:52,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:52,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:03:52,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:03:52,147 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:52,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:52,148 INFO L85 PathProgramCache]: Analyzing trace with hash -608333307, now seen corresponding path program 1 times [2024-02-07 19:03:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:52,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841601844] [2024-02-07 19:03:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:52,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:52,265 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 19:03:52,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:52,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841601844] [2024-02-07 19:03:52,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841601844] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:52,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:52,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:03:52,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770245901] [2024-02-07 19:03:52,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:52,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:03:52,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:03:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:03:52,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-07 19:03:52,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 19:03:52,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:52,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-07 19:03:52,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:52,500 INFO L124 PetriNetUnfolderBase]: 574/1098 cut-off events. [2024-02-07 19:03:52,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:03:52,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 1098 events. 574/1098 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6749 event pairs, 162 based on Foata normal form. 0/836 useless extension candidates. Maximal degree in co-relation 2059. Up to 700 conditions per place. [2024-02-07 19:03:52,525 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 36 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-02-07 19:03:52,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 182 flow [2024-02-07 19:03:52,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:03:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:03:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-02-07 19:03:52,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869565217391305 [2024-02-07 19:03:52,533 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 74 flow. Second operand 3 states and 81 transitions. [2024-02-07 19:03:52,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 182 flow [2024-02-07 19:03:52,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:03:52,535 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 82 flow [2024-02-07 19:03:52,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-02-07 19:03:52,536 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2024-02-07 19:03:52,536 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 82 flow [2024-02-07 19:03:52,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 19:03:52,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:52,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 19:03:52,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:03:52,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:52,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:52,538 INFO L85 PathProgramCache]: Analyzing trace with hash -608333735, now seen corresponding path program 1 times [2024-02-07 19:03:52,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:52,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969568075] [2024-02-07 19:03:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:52,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:52,600 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 19:03:52,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:52,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969568075] [2024-02-07 19:03:52,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969568075] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:52,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:52,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:03:52,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421644687] [2024-02-07 19:03:52,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:52,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:03:52,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:52,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:03:52,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:03:52,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-07 19:03:52,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 19:03:52,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:52,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-07 19:03:52,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:52,725 INFO L124 PetriNetUnfolderBase]: 416/797 cut-off events. [2024-02-07 19:03:52,726 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2024-02-07 19:03:52,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1634 conditions, 797 events. 416/797 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4386 event pairs, 150 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 1629. Up to 520 conditions per place. [2024-02-07 19:03:52,732 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 36 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-02-07 19:03:52,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 199 flow [2024-02-07 19:03:52,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:03:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:03:52,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-02-07 19:03:52,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2024-02-07 19:03:52,736 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 82 flow. Second operand 3 states and 84 transitions. [2024-02-07 19:03:52,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 199 flow [2024-02-07 19:03:52,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:03:52,741 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 101 flow [2024-02-07 19:03:52,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-02-07 19:03:52,743 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2024-02-07 19:03:52,744 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 101 flow [2024-02-07 19:03:52,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 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 19:03:52,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:52,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:03:52,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:03:52,745 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:52,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1678476337, now seen corresponding path program 1 times [2024-02-07 19:03:52,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:52,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965515961] [2024-02-07 19:03:52,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:52,808 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 19:03:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:52,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965515961] [2024-02-07 19:03:52,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965515961] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:52,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:52,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:03:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467644387] [2024-02-07 19:03:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:52,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:03:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:03:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:03:52,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-02-07 19:03:52,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:03:52,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:52,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-02-07 19:03:52,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:52,906 INFO L124 PetriNetUnfolderBase]: 416/910 cut-off events. [2024-02-07 19:03:52,906 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2024-02-07 19:03:52,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 910 events. 416/910 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5595 event pairs, 398 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 1908. Up to 705 conditions per place. [2024-02-07 19:03:52,922 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 24 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2024-02-07 19:03:52,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 149 flow [2024-02-07 19:03:52,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:03:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:03:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-02-07 19:03:52,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-02-07 19:03:52,924 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 101 flow. Second operand 3 states and 63 transitions. [2024-02-07 19:03:52,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 149 flow [2024-02-07 19:03:52,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:03:52,925 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 98 flow [2024-02-07 19:03:52,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2024-02-07 19:03:52,926 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2024-02-07 19:03:52,926 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 98 flow [2024-02-07 19:03:52,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 19:03:52,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:52,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:03:52,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:03:52,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:52,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:52,928 INFO L85 PathProgramCache]: Analyzing trace with hash -842004386, now seen corresponding path program 1 times [2024-02-07 19:03:52,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:52,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757179390] [2024-02-07 19:03:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:52,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:52,966 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 19:03:52,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:52,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757179390] [2024-02-07 19:03:52,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757179390] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:52,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:52,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:03:52,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595397673] [2024-02-07 19:03:52,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:52,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:03:52,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:52,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:03:52,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:03:52,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-07 19:03:52,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:03:52,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:52,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-07 19:03:52,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:53,078 INFO L124 PetriNetUnfolderBase]: 376/756 cut-off events. [2024-02-07 19:03:53,078 INFO L125 PetriNetUnfolderBase]: For 101/101 co-relation queries the response was YES. [2024-02-07 19:03:53,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1601 conditions, 756 events. 376/756 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4233 event pairs, 139 based on Foata normal form. 26/694 useless extension candidates. Maximal degree in co-relation 1595. Up to 449 conditions per place. [2024-02-07 19:03:53,084 INFO L140 encePairwiseOnDemand]: 44/46 looper letters, 37 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2024-02-07 19:03:53,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 204 flow [2024-02-07 19:03:53,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:03:53,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:03:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-02-07 19:03:53,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.572463768115942 [2024-02-07 19:03:53,087 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 98 flow. Second operand 3 states and 79 transitions. [2024-02-07 19:03:53,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 204 flow [2024-02-07 19:03:53,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 201 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:03:53,089 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 93 flow [2024-02-07 19:03:53,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-02-07 19:03:53,090 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -6 predicate places. [2024-02-07 19:03:53,090 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 93 flow [2024-02-07 19:03:53,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-07 19:03:53,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:53,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:03:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:03:53,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:53,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1891950835, now seen corresponding path program 1 times [2024-02-07 19:03:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573770971] [2024-02-07 19:03:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:53,209 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 19:03:53,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:53,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573770971] [2024-02-07 19:03:53,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573770971] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:53,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:53,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:03:53,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182305401] [2024-02-07 19:03:53,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:53,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:03:53,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:53,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:03:53,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:03:53,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-02-07 19:03:53,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 19:03:53,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:53,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-02-07 19:03:53,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:53,340 INFO L124 PetriNetUnfolderBase]: 294/690 cut-off events. [2024-02-07 19:03:53,341 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-02-07 19:03:53,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 690 events. 294/690 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3963 event pairs, 62 based on Foata normal form. 29/616 useless extension candidates. Maximal degree in co-relation 1387. Up to 289 conditions per place. [2024-02-07 19:03:53,345 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 38 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-02-07 19:03:53,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 227 flow [2024-02-07 19:03:53,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:03:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:03:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-02-07 19:03:53,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2024-02-07 19:03:53,347 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 93 flow. Second operand 4 states and 96 transitions. [2024-02-07 19:03:53,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 227 flow [2024-02-07 19:03:53,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 53 transitions, 224 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:03:53,349 INFO L231 Difference]: Finished difference. Result has 48 places, 36 transitions, 114 flow [2024-02-07 19:03:53,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=48, PETRI_TRANSITIONS=36} [2024-02-07 19:03:53,350 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2024-02-07 19:03:53,351 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 36 transitions, 114 flow [2024-02-07 19:03:53,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 19:03:53,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:53,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:03:53,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:03:53,352 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:53,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1724366827, now seen corresponding path program 1 times [2024-02-07 19:03:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:53,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765673065] [2024-02-07 19:03:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:53,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:53,379 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 19:03:53,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:53,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765673065] [2024-02-07 19:03:53,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765673065] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:53,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:53,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:03:53,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15647156] [2024-02-07 19:03:53,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:53,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:03:53,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:03:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:03:53,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-07 19:03:53,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 36 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 19:03:53,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:53,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-07 19:03:53,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:53,455 INFO L124 PetriNetUnfolderBase]: 220/524 cut-off events. [2024-02-07 19:03:53,456 INFO L125 PetriNetUnfolderBase]: For 185/189 co-relation queries the response was YES. [2024-02-07 19:03:53,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1146 conditions, 524 events. 220/524 cut-off events. For 185/189 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2707 event pairs, 110 based on Foata normal form. 16/489 useless extension candidates. Maximal degree in co-relation 1139. Up to 336 conditions per place. [2024-02-07 19:03:53,459 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 25 selfloop transitions, 2 changer transitions 2/40 dead transitions. [2024-02-07 19:03:53,459 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 177 flow [2024-02-07 19:03:53,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:03:53,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:03:53,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 74 transitions. [2024-02-07 19:03:53,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5362318840579711 [2024-02-07 19:03:53,461 INFO L175 Difference]: Start difference. First operand has 48 places, 36 transitions, 114 flow. Second operand 3 states and 74 transitions. [2024-02-07 19:03:53,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 177 flow [2024-02-07 19:03:53,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:03:53,463 INFO L231 Difference]: Finished difference. Result has 45 places, 31 transitions, 95 flow [2024-02-07 19:03:53,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=31} [2024-02-07 19:03:53,464 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2024-02-07 19:03:53,464 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 31 transitions, 95 flow [2024-02-07 19:03:53,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 19:03:53,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:53,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:03:53,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:03:53,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:53,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:53,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1491945399, now seen corresponding path program 1 times [2024-02-07 19:03:53,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:53,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199420607] [2024-02-07 19:03:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:53,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:53,519 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 19:03:53,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:53,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199420607] [2024-02-07 19:03:53,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199420607] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:53,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:53,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:03:53,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732408086] [2024-02-07 19:03:53,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:53,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:03:53,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:53,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:03:53,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:03:53,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 46 [2024-02-07 19:03:53,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 31 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 19:03:53,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:53,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 46 [2024-02-07 19:03:53,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:53,605 INFO L124 PetriNetUnfolderBase]: 171/390 cut-off events. [2024-02-07 19:03:53,606 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-02-07 19:03:53,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 390 events. 171/390 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1833 event pairs, 25 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 868. Up to 266 conditions per place. [2024-02-07 19:03:53,608 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 29 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2024-02-07 19:03:53,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 203 flow [2024-02-07 19:03:53,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:03:53,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:03:53,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-02-07 19:03:53,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-02-07 19:03:53,610 INFO L175 Difference]: Start difference. First operand has 45 places, 31 transitions, 95 flow. Second operand 4 states and 88 transitions. [2024-02-07 19:03:53,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 203 flow [2024-02-07 19:03:53,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 183 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-02-07 19:03:53,611 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 104 flow [2024-02-07 19:03:53,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2024-02-07 19:03:53,612 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2024-02-07 19:03:53,613 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 104 flow [2024-02-07 19:03:53,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 19:03:53,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:53,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:03:53,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:03:53,613 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:53,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:53,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1717072573, now seen corresponding path program 1 times [2024-02-07 19:03:53,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:53,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828222628] [2024-02-07 19:03:53,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:53,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:03:53,708 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 19:03:53,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:03:53,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828222628] [2024-02-07 19:03:53,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828222628] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:03:53,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:03:53,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:03:53,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466264101] [2024-02-07 19:03:53,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:03:53,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:03:53,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:03:53,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:03:53,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:03:53,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 46 [2024-02-07 19:03:53,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 19:03:53,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:03:53,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 46 [2024-02-07 19:03:53,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:03:53,805 INFO L124 PetriNetUnfolderBase]: 102/242 cut-off events. [2024-02-07 19:03:53,806 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-02-07 19:03:53,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 577 conditions, 242 events. 102/242 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 845 event pairs, 22 based on Foata normal form. 16/249 useless extension candidates. Maximal degree in co-relation 570. Up to 86 conditions per place. [2024-02-07 19:03:53,808 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 28 selfloop transitions, 6 changer transitions 1/46 dead transitions. [2024-02-07 19:03:53,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 209 flow [2024-02-07 19:03:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:03:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:03:53,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 100 transitions. [2024-02-07 19:03:53,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-02-07 19:03:53,810 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 104 flow. Second operand 5 states and 100 transitions. [2024-02-07 19:03:53,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 209 flow [2024-02-07 19:03:53,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-02-07 19:03:53,813 INFO L231 Difference]: Finished difference. Result has 50 places, 33 transitions, 120 flow [2024-02-07 19:03:53,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=50, PETRI_TRANSITIONS=33} [2024-02-07 19:03:53,814 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 0 predicate places. [2024-02-07 19:03:53,815 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 33 transitions, 120 flow [2024-02-07 19:03:53,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 19:03:53,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:03:53,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:03:53,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:03:53,815 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 25 more)] === [2024-02-07 19:03:53,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:03:53,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1757347787, now seen corresponding path program 1 times [2024-02-07 19:03:53,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:03:53,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802324033] [2024-02-07 19:03:53,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:03:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:03:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:03:53,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:03:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:03:53,876 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:03:53,877 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:03:53,878 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 28 remaining) [2024-02-07 19:03:53,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 28 remaining) [2024-02-07 19:03:53,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 28 remaining) [2024-02-07 19:03:53,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 28 remaining) [2024-02-07 19:03:53,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 28 remaining) [2024-02-07 19:03:53,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 28 remaining) [2024-02-07 19:03:53,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 28 remaining) [2024-02-07 19:03:53,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 28 remaining) [2024-02-07 19:03:53,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 28 remaining) [2024-02-07 19:03:53,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 28 remaining) [2024-02-07 19:03:53,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 28 remaining) [2024-02-07 19:03:53,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 28 remaining) [2024-02-07 19:03:53,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 28 remaining) [2024-02-07 19:03:53,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 28 remaining) [2024-02-07 19:03:53,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 28 remaining) [2024-02-07 19:03:53,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 28 remaining) [2024-02-07 19:03:53,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (11 of 28 remaining) [2024-02-07 19:03:53,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 28 remaining) [2024-02-07 19:03:53,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 28 remaining) [2024-02-07 19:03:53,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 28 remaining) [2024-02-07 19:03:53,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 28 remaining) [2024-02-07 19:03:53,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 28 remaining) [2024-02-07 19:03:53,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 28 remaining) [2024-02-07 19:03:53,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 28 remaining) [2024-02-07 19:03:53,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 28 remaining) [2024-02-07 19:03:53,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 28 remaining) [2024-02-07 19:03:53,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 28 remaining) [2024-02-07 19:03:53,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 28 remaining) [2024-02-07 19:03:53,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:03:53,885 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:03:53,892 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:03:53,892 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:03:53,912 INFO L503 ceAbstractionStarter]: Automizer considered 16 witness invariants [2024-02-07 19:03:53,913 INFO L504 ceAbstractionStarter]: WitnessConsidered=16 [2024-02-07 19:03:53,913 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:03:53 BasicIcfg [2024-02-07 19:03:53,913 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:03:53,914 INFO L158 Benchmark]: Toolchain (without parser) took 3665.72ms. Allocated memory was 207.6MB in the beginning and 281.0MB in the end (delta: 73.4MB). Free memory was 134.5MB in the beginning and 186.6MB in the end (delta: -52.1MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2024-02-07 19:03:53,914 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:03:53,914 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 207.6MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:03:53,915 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.28ms. Allocated memory is still 207.6MB. Free memory was 134.1MB in the beginning and 106.7MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-02-07 19:03:53,915 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.53ms. Allocated memory is still 207.6MB. Free memory was 106.7MB in the beginning and 104.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:03:53,915 INFO L158 Benchmark]: Boogie Preprocessor took 67.31ms. Allocated memory is still 207.6MB. Free memory was 104.5MB in the beginning and 102.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:03:53,915 INFO L158 Benchmark]: RCFGBuilder took 485.07ms. Allocated memory is still 207.6MB. Free memory was 102.4MB in the beginning and 163.6MB in the end (delta: -61.3MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2024-02-07 19:03:53,915 INFO L158 Benchmark]: TraceAbstraction took 2495.59ms. Allocated memory was 207.6MB in the beginning and 281.0MB in the end (delta: 73.4MB). Free memory was 162.6MB in the beginning and 186.6MB in the end (delta: -24.0MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2024-02-07 19:03:53,917 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 93.0MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.16ms. Allocated memory is still 207.6MB. Free memory is still 137.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.28ms. Allocated memory is still 207.6MB. Free memory was 134.1MB in the beginning and 106.7MB in the end (delta: 27.4MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.53ms. Allocated memory is still 207.6MB. Free memory was 106.7MB in the beginning and 104.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.31ms. Allocated memory is still 207.6MB. Free memory was 104.5MB in the beginning and 102.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 485.07ms. Allocated memory is still 207.6MB. Free memory was 102.4MB in the beginning and 163.6MB in the end (delta: -61.3MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2495.59ms. Allocated memory was 207.6MB in the beginning and 281.0MB in the end (delta: 73.4MB). Free memory was 162.6MB in the beginning and 186.6MB in the end (delta: -24.0MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 769]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L711] 0 _Bool main$tmp_guard0; [L712] 0 _Bool main$tmp_guard1; [L714] 0 int x = 0; [L716] 0 int y = 0; [L758] 0 pthread_t t2021; [L759] FCALL, FORK 0 pthread_create(&t2021, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, x=0, y=0] [L720] 1 y = 2 [L721] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L760] 0 pthread_t t2022; [L761] FCALL, FORK 0 pthread_create(&t2022, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=0, y=2] [L735] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[x]],BinaryExpression[COMPLEQ,IdentifierExpression[x],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]]]] [L735] 2 __unbuffered_p1_EAX = x [L736] 2 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L723] 1 x = 1 [L724] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L738] 2 y = 1 [L739] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L728] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L728] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=1, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L743] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L743] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L763] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L763] 0 main$tmp_guard0 = __unbuffered_cnt == 2 [L764] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=1, y=1] [L765] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[main$tmp_guard0],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] [L765] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L765] RET 0 assume_abort_if_not(main$tmp_guard0) [L769] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p1_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p1_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=2, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2021={5:0}, t2022={3:0}, x=1, y=1] - UnprovableResult [Line: 721]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 724]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 729]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 735]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 736]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 739]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 743]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 764]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 765]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 770]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 771]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 761]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 71 locations, 28 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 157 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 154 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 391 IncrementalHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 0 mSDtfsCounter, 391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=9, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 223 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-02-07 19:03:53,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE