./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe021_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/safe021_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/safe021_tso.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe021_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 19:04:04,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:04:04,901 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:04:04,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:04:04,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:04:04,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:04:04,938 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:04:04,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:04:04,939 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:04:04,943 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:04:04,944 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:04:04,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:04:04,945 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:04:04,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:04:04,946 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:04:04,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:04:04,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:04:04,947 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:04:04,947 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:04:04,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:04:04,948 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:04:04,948 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:04:04,949 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:04:04,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:04:04,949 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:04:04,949 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:04:04,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:04:04,950 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:04:04,950 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:04:04,950 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:04:04,951 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:04:04,951 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:04:04,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:04:04,952 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:04:04,952 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:04:04,952 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:04:04,952 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:04:04,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:04:04,953 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:04:04,953 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:04:04,953 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:04:04,954 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:04:04,954 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:04:04,954 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:04:05,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:04:05,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:04:05,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:04:05,205 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:04:05,206 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:04:05,207 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2024-02-07 19:04:06,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:04:06,620 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:04:06,621 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2024-02-07 19:04:06,637 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc40039f4/45e4b088627e426c8f870c5d6396c3f5/FLAGc19d1e973 [2024-02-07 19:04:06,653 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc40039f4/45e4b088627e426c8f870c5d6396c3f5 [2024-02-07 19:04:06,656 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:04:06,657 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:04:06,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/safe021_tso.yml/witness.yml [2024-02-07 19:04:06,752 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:04:06,753 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:04:06,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:04:06,755 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:04:06,760 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:04:06,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:04:06" (1/2) ... [2024-02-07 19:04:06,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac68c56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:06, skipping insertion in model container [2024-02-07 19:04:06,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:04:06" (1/2) ... [2024-02-07 19:04:06,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@471f04d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:04:06, skipping insertion in model container [2024-02-07 19:04:06,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:06" (2/2) ... [2024-02-07 19:04:06,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac68c56 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:04:06, skipping insertion in model container [2024-02-07 19:04:06,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:06" (2/2) ... [2024-02-07 19:04:06,766 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:04:06,835 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:04:06,836 INFO L76 edCorrectnessWitness]: Location invariant before [L786-L786] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:04:06,837 INFO L76 edCorrectnessWitness]: Location invariant before [L791-L791] ((((0 <= __unbuffered_p2_EBX) && (__unbuffered_p2_EBX <= 1)) && (x == 2)) && (__unbuffered_p2_EAX == 1 || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) [2024-02-07 19:04:06,837 INFO L76 edCorrectnessWitness]: Location invariant before [L734-L734] 1 <= __unbuffered_cnt [2024-02-07 19:04:06,837 INFO L76 edCorrectnessWitness]: Location invariant before [L759-L759] ((0 <= __unbuffered_p2_EBX) && (__unbuffered_p2_EBX <= 1)) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1) [2024-02-07 19:04:06,837 INFO L76 edCorrectnessWitness]: Location invariant before [L787-L787] main$tmp_guard0 == (_Bool)0 || main$tmp_guard0 == (_Bool)1 [2024-02-07 19:04:06,837 INFO L76 edCorrectnessWitness]: Location invariant before [L741-L741] x == 2 [2024-02-07 19:04:06,838 INFO L76 edCorrectnessWitness]: Location invariant before [L785-L785] 0 <= __unbuffered_cnt [2024-02-07 19:04:06,838 INFO L76 edCorrectnessWitness]: Location invariant before [L758-L758] ((0 <= z) && (z <= 1)) && (z == 0 || z == 1) [2024-02-07 19:04:06,838 INFO L76 edCorrectnessWitness]: Location invariant before [L792-L792] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:04:06,838 INFO L76 edCorrectnessWitness]: Location invariant before [L756-L756] ((0 <= __unbuffered_p2_EAX) && (__unbuffered_p2_EAX <= 1)) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1) [2024-02-07 19:04:06,838 INFO L76 edCorrectnessWitness]: Location invariant before [L726-L726] z == 1 [2024-02-07 19:04:06,839 INFO L76 edCorrectnessWitness]: Location invariant before [L744-L744] y == 1 [2024-02-07 19:04:06,839 INFO L76 edCorrectnessWitness]: Location invariant before [L755-L755] ((0 <= y) && (y <= 1)) && (y == 0 || y == 1) [2024-02-07 19:04:06,839 INFO L76 edCorrectnessWitness]: Location invariant before [L18-L18] ((0 <= expression) && (expression <= 1)) && (expression == 0 || expression == 1) [2024-02-07 19:04:06,839 INFO L76 edCorrectnessWitness]: Location invariant before [L763-L763] 0 <= __unbuffered_cnt [2024-02-07 19:04:06,839 INFO L76 edCorrectnessWitness]: Location invariant before [L793-L793] main$tmp_guard1 == (_Bool)0 || main$tmp_guard1 == (_Bool)1 [2024-02-07 19:04:06,839 INFO L76 edCorrectnessWitness]: Location invariant before [L729-L729] x == 1 [2024-02-07 19:04:06,840 INFO L76 edCorrectnessWitness]: Location invariant before [L733-L733] 0 <= __unbuffered_cnt [2024-02-07 19:04:06,840 INFO L76 edCorrectnessWitness]: Location invariant before [L748-L748] 0 <= __unbuffered_cnt [2024-02-07 19:04:06,840 INFO L76 edCorrectnessWitness]: Location invariant before [L764-L764] 1 <= __unbuffered_cnt [2024-02-07 19:04:06,840 INFO L76 edCorrectnessWitness]: Location invariant before [L749-L749] 1 <= __unbuffered_cnt [2024-02-07 19:04:06,873 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:04:07,145 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/safe021_tso.i[945,958] [2024-02-07 19:04:07,345 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:04:07,356 INFO L206 MainTranslator]: Completed pre-run Start Parsing Local [2024-02-07 19:04:07,389 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/safe021_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 Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:04:07,449 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:04:07,485 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:04:07,486 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:04:07 WrapperNode [2024-02-07 19:04:07,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:04:07,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:04:07,488 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:04:07,488 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:04:07,494 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,515 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,554 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 77 [2024-02-07 19:04:07,555 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:04:07,558 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:04:07,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:04:07,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:04:07,571 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,571 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,585 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,601 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-07 19:04:07,601 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,601 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,606 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,608 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,609 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,610 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,612 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:04:07,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:04:07,613 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:04:07,613 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:04:07,613 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 07:04:07" (1/1) ... [2024-02-07 19:04:07,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:04:07,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:04:07,637 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 19:04:07,642 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 19:04:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:04:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:04:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:04:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:04:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 19:04:07,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:04:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:04:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:04:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-02-07 19:04:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-02-07 19:04:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-02-07 19:04:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-02-07 19:04:07,668 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-02-07 19:04:07,668 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-02-07 19:04:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:04:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:04:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:04:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:04:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 19:04:07,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:04:07,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:04:07,671 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 19:04:07,769 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:04:07,771 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:04:08,073 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:04:08,073 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:04:08,188 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:04:08,188 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 19:04:08,189 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:04:08 BoogieIcfgContainer [2024-02-07 19:04:08,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:04:08,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:04:08,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:04:08,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:04:08,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:04:06" (1/4) ... [2024-02-07 19:04:08,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd28e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:04:08, skipping insertion in model container [2024-02-07 19:04:08,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:04:06" (2/4) ... [2024-02-07 19:04:08,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd28e45 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:04:08, skipping insertion in model container [2024-02-07 19:04:08,195 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 07:04:07" (3/4) ... [2024-02-07 19:04:08,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd28e45 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:04:08, skipping insertion in model container [2024-02-07 19:04:08,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:04:08" (4/4) ... [2024-02-07 19:04:08,198 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2024-02-07 19:04:08,212 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:04:08,212 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-02-07 19:04:08,212 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:04:08,274 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-02-07 19:04:08,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 60 transitions, 132 flow [2024-02-07 19:04:08,354 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2024-02-07 19:04:08,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:08,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 174 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-02-07 19:04:08,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 60 transitions, 132 flow [2024-02-07 19:04:08,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 57 transitions, 123 flow [2024-02-07 19:04:08,374 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:04:08,380 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;@66939258, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:04:08,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-02-07 19:04:08,384 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:04:08,384 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 19:04:08,385 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:08,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:08,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 19:04:08,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:08,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:08,391 INFO L85 PathProgramCache]: Analyzing trace with hash 9546821, now seen corresponding path program 1 times [2024-02-07 19:04:08,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:08,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106615925] [2024-02-07 19:04:08,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:08,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:08,563 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 19:04:08,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106615925] [2024-02-07 19:04:08,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106615925] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:08,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:08,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:08,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109541542] [2024-02-07 19:04:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:08,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 19:04:08,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:08,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 19:04:08,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 19:04:08,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:04:08,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 123 flow. Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 19:04:08,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:08,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:04:08,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:09,670 INFO L124 PetriNetUnfolderBase]: 6431/10877 cut-off events. [2024-02-07 19:04:09,670 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-02-07 19:04:09,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20076 conditions, 10877 events. 6431/10877 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 83110 event pairs, 6431 based on Foata normal form. 252/7998 useless extension candidates. Maximal degree in co-relation 20065. Up to 9109 conditions per place. [2024-02-07 19:04:09,818 INFO L140 encePairwiseOnDemand]: 48/60 looper letters, 31 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2024-02-07 19:04:09,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 161 flow [2024-02-07 19:04:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 19:04:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 19:04:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-02-07 19:04:09,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-02-07 19:04:09,839 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 123 flow. Second operand 2 states and 77 transitions. [2024-02-07 19:04:09,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 161 flow [2024-02-07 19:04:09,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:09,855 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 96 flow [2024-02-07 19:04:09,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-02-07 19:04:09,859 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -13 predicate places. [2024-02-07 19:04:09,859 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 96 flow [2024-02-07 19:04:09,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 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 19:04:09,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:09,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:09,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:04:09,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:09,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:09,874 INFO L85 PathProgramCache]: Analyzing trace with hash 941842515, now seen corresponding path program 1 times [2024-02-07 19:04:09,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:09,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100437838] [2024-02-07 19:04:09,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:09,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:10,036 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 19:04:10,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:10,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100437838] [2024-02-07 19:04:10,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100437838] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:10,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:10,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:10,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495302330] [2024-02-07 19:04:10,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:10,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:10,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:10,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:10,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:10,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:04:10,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 19:04:10,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:10,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:04:10,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:10,876 INFO L124 PetriNetUnfolderBase]: 4940/7487 cut-off events. [2024-02-07 19:04:10,877 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:04:10,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14657 conditions, 7487 events. 4940/7487 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 46427 event pairs, 1660 based on Foata normal form. 0/5795 useless extension candidates. Maximal degree in co-relation 14654. Up to 5961 conditions per place. [2024-02-07 19:04:10,926 INFO L140 encePairwiseOnDemand]: 52/60 looper letters, 49 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2024-02-07 19:04:10,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 67 transitions, 250 flow [2024-02-07 19:04:10,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:10,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2024-02-07 19:04:10,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-02-07 19:04:10,929 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 96 flow. Second operand 3 states and 108 transitions. [2024-02-07 19:04:10,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 67 transitions, 250 flow [2024-02-07 19:04:10,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 67 transitions, 250 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:04:10,932 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 128 flow [2024-02-07 19:04:10,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-02-07 19:04:10,933 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-02-07 19:04:10,933 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 128 flow [2024-02-07 19:04:10,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 19:04:10,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:10,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:10,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:04:10,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:10,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:10,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2051684775, now seen corresponding path program 1 times [2024-02-07 19:04:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434607932] [2024-02-07 19:04:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:10,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:11,002 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 19:04:11,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434607932] [2024-02-07 19:04:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434607932] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:11,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:11,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531516306] [2024-02-07 19:04:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:11,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:11,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:11,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:11,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:04:11,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 19:04:11,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:11,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:04:11,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:11,746 INFO L124 PetriNetUnfolderBase]: 4716/7442 cut-off events. [2024-02-07 19:04:11,747 INFO L125 PetriNetUnfolderBase]: For 756/756 co-relation queries the response was YES. [2024-02-07 19:04:11,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16355 conditions, 7442 events. 4716/7442 cut-off events. For 756/756 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 49360 event pairs, 1677 based on Foata normal form. 0/6021 useless extension candidates. Maximal degree in co-relation 16350. Up to 4968 conditions per place. [2024-02-07 19:04:11,804 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 55 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-02-07 19:04:11,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 71 transitions, 306 flow [2024-02-07 19:04:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:11,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:11,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-02-07 19:04:11,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-02-07 19:04:11,813 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 128 flow. Second operand 3 states and 104 transitions. [2024-02-07 19:04:11,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 71 transitions, 306 flow [2024-02-07 19:04:11,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:11,818 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 132 flow [2024-02-07 19:04:11,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2024-02-07 19:04:11,821 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2024-02-07 19:04:11,821 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 132 flow [2024-02-07 19:04:11,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 19:04:11,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:11,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:11,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:04:11,824 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:11,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:11,824 INFO L85 PathProgramCache]: Analyzing trace with hash -822331056, now seen corresponding path program 1 times [2024-02-07 19:04:11,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:11,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839946033] [2024-02-07 19:04:11,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:11,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:11,933 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 19:04:11,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:11,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839946033] [2024-02-07 19:04:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839946033] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:11,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:11,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:11,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644296171] [2024-02-07 19:04:11,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:11,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:11,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:11,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-02-07 19:04:11,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:04:11,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:11,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-02-07 19:04:11,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:12,838 INFO L124 PetriNetUnfolderBase]: 4716/7892 cut-off events. [2024-02-07 19:04:12,839 INFO L125 PetriNetUnfolderBase]: For 1315/1323 co-relation queries the response was YES. [2024-02-07 19:04:12,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17273 conditions, 7892 events. 4716/7892 cut-off events. For 1315/1323 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 56559 event pairs, 4424 based on Foata normal form. 0/6299 useless extension candidates. Maximal degree in co-relation 17267. Up to 6789 conditions per place. [2024-02-07 19:04:12,907 INFO L140 encePairwiseOnDemand]: 58/60 looper letters, 33 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2024-02-07 19:04:12,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 198 flow [2024-02-07 19:04:12,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-02-07 19:04:12,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-07 19:04:12,909 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 132 flow. Second operand 3 states and 80 transitions. [2024-02-07 19:04:12,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 198 flow [2024-02-07 19:04:12,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:12,913 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 128 flow [2024-02-07 19:04:12,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-02-07 19:04:12,914 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-02-07 19:04:12,915 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 128 flow [2024-02-07 19:04:12,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 19:04:12,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:12,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:12,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 19:04:12,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:12,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:12,918 INFO L85 PathProgramCache]: Analyzing trace with hash -822281021, now seen corresponding path program 1 times [2024-02-07 19:04:12,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:12,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413039271] [2024-02-07 19:04:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:12,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:12,975 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 19:04:12,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:12,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413039271] [2024-02-07 19:04:12,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413039271] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:12,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:12,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 19:04:12,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867657511] [2024-02-07 19:04:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:12,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:12,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:12,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:04:12,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 19:04:12,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:12,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:04:12,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:13,855 INFO L124 PetriNetUnfolderBase]: 4604/7023 cut-off events. [2024-02-07 19:04:13,856 INFO L125 PetriNetUnfolderBase]: For 907/909 co-relation queries the response was YES. [2024-02-07 19:04:13,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15928 conditions, 7023 events. 4604/7023 cut-off events. For 907/909 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 43810 event pairs, 1438 based on Foata normal form. 0/5897 useless extension candidates. Maximal degree in co-relation 15922. Up to 5929 conditions per place. [2024-02-07 19:04:13,941 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 57 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2024-02-07 19:04:13,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 317 flow [2024-02-07 19:04:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:13,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2024-02-07 19:04:13,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2024-02-07 19:04:13,945 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 128 flow. Second operand 3 states and 106 transitions. [2024-02-07 19:04:13,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 317 flow [2024-02-07 19:04:13,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:13,948 INFO L231 Difference]: Finished difference. Result has 59 places, 47 transitions, 135 flow [2024-02-07 19:04:13,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=59, PETRI_TRANSITIONS=47} [2024-02-07 19:04:13,951 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -7 predicate places. [2024-02-07 19:04:13,951 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 47 transitions, 135 flow [2024-02-07 19:04:13,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 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 19:04:13,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:13,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:13,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:04:13,952 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:13,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash 61908161, now seen corresponding path program 1 times [2024-02-07 19:04:13,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:13,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576274793] [2024-02-07 19:04:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:13,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:14,030 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 19:04:14,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576274793] [2024-02-07 19:04:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576274793] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:14,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:14,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:14,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201230554] [2024-02-07 19:04:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:14,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:14,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:14,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:14,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:14,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:04:14,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 47 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 19:04:14,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:14,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:04:14,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:14,627 INFO L124 PetriNetUnfolderBase]: 4097/6306 cut-off events. [2024-02-07 19:04:14,627 INFO L125 PetriNetUnfolderBase]: For 1286/1288 co-relation queries the response was YES. [2024-02-07 19:04:14,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14912 conditions, 6306 events. 4097/6306 cut-off events. For 1286/1288 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 39088 event pairs, 1204 based on Foata normal form. 210/5660 useless extension candidates. Maximal degree in co-relation 14905. Up to 5211 conditions per place. [2024-02-07 19:04:14,686 INFO L140 encePairwiseOnDemand]: 58/60 looper letters, 57 selfloop transitions, 1 changer transitions 0/71 dead transitions. [2024-02-07 19:04:14,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 318 flow [2024-02-07 19:04:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:14,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2024-02-07 19:04:14,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-02-07 19:04:14,688 INFO L175 Difference]: Start difference. First operand has 59 places, 47 transitions, 135 flow. Second operand 3 states and 105 transitions. [2024-02-07 19:04:14,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 318 flow [2024-02-07 19:04:14,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 312 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:14,693 INFO L231 Difference]: Finished difference. Result has 57 places, 46 transitions, 127 flow [2024-02-07 19:04:14,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2024-02-07 19:04:14,695 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -9 predicate places. [2024-02-07 19:04:14,695 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 127 flow [2024-02-07 19:04:14,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 19:04:14,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:14,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:14,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 19:04:14,696 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:14,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:14,697 INFO L85 PathProgramCache]: Analyzing trace with hash 911848103, now seen corresponding path program 1 times [2024-02-07 19:04:14,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:14,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442810771] [2024-02-07 19:04:14,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:14,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:14,752 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 19:04:14,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:14,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442810771] [2024-02-07 19:04:14,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442810771] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:14,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:14,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:14,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551928145] [2024-02-07 19:04:14,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:14,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:14,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:14,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:14,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:04:14,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 19:04:14,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:14,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:04:14,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:15,174 INFO L124 PetriNetUnfolderBase]: 3702/5900 cut-off events. [2024-02-07 19:04:15,175 INFO L125 PetriNetUnfolderBase]: For 985/993 co-relation queries the response was YES. [2024-02-07 19:04:15,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13337 conditions, 5900 events. 3702/5900 cut-off events. For 985/993 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 37846 event pairs, 1341 based on Foata normal form. 172/5221 useless extension candidates. Maximal degree in co-relation 13331. Up to 3799 conditions per place. [2024-02-07 19:04:15,209 INFO L140 encePairwiseOnDemand]: 58/60 looper letters, 53 selfloop transitions, 1 changer transitions 0/67 dead transitions. [2024-02-07 19:04:15,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 67 transitions, 293 flow [2024-02-07 19:04:15,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:15,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:15,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-02-07 19:04:15,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611111111111111 [2024-02-07 19:04:15,211 INFO L175 Difference]: Start difference. First operand has 57 places, 46 transitions, 127 flow. Second operand 3 states and 101 transitions. [2024-02-07 19:04:15,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 67 transitions, 293 flow [2024-02-07 19:04:15,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 67 transitions, 289 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:15,213 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 122 flow [2024-02-07 19:04:15,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2024-02-07 19:04:15,214 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-02-07 19:04:15,214 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 122 flow [2024-02-07 19:04:15,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 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 19:04:15,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:15,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:15,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 19:04:15,215 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:15,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:15,215 INFO L85 PathProgramCache]: Analyzing trace with hash 13848377, now seen corresponding path program 1 times [2024-02-07 19:04:15,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:15,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916612263] [2024-02-07 19:04:15,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:15,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:15,304 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 19:04:15,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:15,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916612263] [2024-02-07 19:04:15,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916612263] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:15,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:15,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-02-07 19:04:15,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98203057] [2024-02-07 19:04:15,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:15,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:04:15,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:15,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:04:15,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:04:15,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-02-07 19:04:15,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 19:04:15,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:15,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-02-07 19:04:15,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:15,723 INFO L124 PetriNetUnfolderBase]: 3493/6281 cut-off events. [2024-02-07 19:04:15,724 INFO L125 PetriNetUnfolderBase]: For 823/823 co-relation queries the response was YES. [2024-02-07 19:04:15,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13460 conditions, 6281 events. 3493/6281 cut-off events. For 823/823 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 46184 event pairs, 597 based on Foata normal form. 179/5378 useless extension candidates. Maximal degree in co-relation 13455. Up to 3001 conditions per place. [2024-02-07 19:04:15,774 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 54 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-02-07 19:04:15,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 72 transitions, 316 flow [2024-02-07 19:04:15,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:04:15,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:04:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-02-07 19:04:15,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-02-07 19:04:15,776 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 122 flow. Second operand 4 states and 125 transitions. [2024-02-07 19:04:15,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 72 transitions, 316 flow [2024-02-07 19:04:15,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 72 transitions, 313 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 19:04:15,779 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 147 flow [2024-02-07 19:04:15,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-02-07 19:04:15,780 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -6 predicate places. [2024-02-07 19:04:15,780 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 147 flow [2024-02-07 19:04:15,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 19:04:15,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:15,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:15,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-02-07 19:04:15,781 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:15,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash 388292127, now seen corresponding path program 1 times [2024-02-07 19:04:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:15,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92770686] [2024-02-07 19:04:15,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:15,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:15,811 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 19:04:15,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:15,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92770686] [2024-02-07 19:04:15,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92770686] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:15,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:15,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:04:15,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583950769] [2024-02-07 19:04:15,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:15,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 19:04:15,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:15,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 19:04:15,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 19:04:15,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 60 [2024-02-07 19:04:15,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 147 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 19:04:15,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:15,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 60 [2024-02-07 19:04:15,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:16,103 INFO L124 PetriNetUnfolderBase]: 2080/3780 cut-off events. [2024-02-07 19:04:16,104 INFO L125 PetriNetUnfolderBase]: For 1107/1107 co-relation queries the response was YES. [2024-02-07 19:04:16,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8464 conditions, 3780 events. 2080/3780 cut-off events. For 1107/1107 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 25156 event pairs, 864 based on Foata normal form. 98/3566 useless extension candidates. Maximal degree in co-relation 8457. Up to 2834 conditions per place. [2024-02-07 19:04:16,122 INFO L140 encePairwiseOnDemand]: 53/60 looper letters, 35 selfloop transitions, 3 changer transitions 2/53 dead transitions. [2024-02-07 19:04:16,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 239 flow [2024-02-07 19:04:16,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 19:04:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 19:04:16,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-02-07 19:04:16,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-02-07 19:04:16,124 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 147 flow. Second operand 3 states and 95 transitions. [2024-02-07 19:04:16,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 239 flow [2024-02-07 19:04:16,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 19:04:16,126 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 125 flow [2024-02-07 19:04:16,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2024-02-07 19:04:16,127 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -10 predicate places. [2024-02-07 19:04:16,127 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 125 flow [2024-02-07 19:04:16,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 19:04:16,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:16,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:16,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-02-07 19:04:16,128 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:16,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:16,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2065465192, now seen corresponding path program 1 times [2024-02-07 19:04:16,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:16,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624348725] [2024-02-07 19:04:16,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:16,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:16,211 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 19:04:16,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:16,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624348725] [2024-02-07 19:04:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624348725] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:16,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:16,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-07 19:04:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018540351] [2024-02-07 19:04:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:16,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:04:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:16,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:04:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:04:16,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-02-07 19:04:16,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 19:04:16,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:16,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-02-07 19:04:16,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:16,420 INFO L124 PetriNetUnfolderBase]: 1159/2141 cut-off events. [2024-02-07 19:04:16,420 INFO L125 PetriNetUnfolderBase]: For 765/765 co-relation queries the response was YES. [2024-02-07 19:04:16,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4864 conditions, 2141 events. 1159/2141 cut-off events. For 765/765 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 12320 event pairs, 149 based on Foata normal form. 98/2089 useless extension candidates. Maximal degree in co-relation 4857. Up to 641 conditions per place. [2024-02-07 19:04:16,430 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 57 selfloop transitions, 8 changer transitions 1/79 dead transitions. [2024-02-07 19:04:16,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 361 flow [2024-02-07 19:04:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:04:16,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:04:16,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-02-07 19:04:16,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2024-02-07 19:04:16,432 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 125 flow. Second operand 5 states and 148 transitions. [2024-02-07 19:04:16,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 361 flow [2024-02-07 19:04:16,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 79 transitions, 345 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-02-07 19:04:16,435 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 158 flow [2024-02-07 19:04:16,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2024-02-07 19:04:16,436 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -8 predicate places. [2024-02-07 19:04:16,436 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 158 flow [2024-02-07 19:04:16,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 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 19:04:16,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:16,436 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:16,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-07 19:04:16,437 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:16,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:16,438 INFO L85 PathProgramCache]: Analyzing trace with hash 7580623, now seen corresponding path program 1 times [2024-02-07 19:04:16,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:16,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212952226] [2024-02-07 19:04:16,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:16,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:04:16,562 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 19:04:16,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:04:16,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212952226] [2024-02-07 19:04:16,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212952226] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:04:16,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:04:16,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-07 19:04:16,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072352522] [2024-02-07 19:04:16,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:04:16,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-07 19:04:16,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:04:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-07 19:04:16,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-02-07 19:04:16,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 60 [2024-02-07 19:04:16,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 158 flow. Second operand has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 19:04:16,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:04:16,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 60 [2024-02-07 19:04:16,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:04:16,751 INFO L124 PetriNetUnfolderBase]: 700/1196 cut-off events. [2024-02-07 19:04:16,752 INFO L125 PetriNetUnfolderBase]: For 872/872 co-relation queries the response was YES. [2024-02-07 19:04:16,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 1196 events. 700/1196 cut-off events. For 872/872 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5364 event pairs, 128 based on Foata normal form. 44/1198 useless extension candidates. Maximal degree in co-relation 3174. Up to 378 conditions per place. [2024-02-07 19:04:16,760 INFO L140 encePairwiseOnDemand]: 54/60 looper letters, 49 selfloop transitions, 11 changer transitions 1/74 dead transitions. [2024-02-07 19:04:16,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 356 flow [2024-02-07 19:04:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-07 19:04:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-07 19:04:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-02-07 19:04:16,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-02-07 19:04:16,762 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 158 flow. Second operand 6 states and 159 transitions. [2024-02-07 19:04:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 356 flow [2024-02-07 19:04:16,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 74 transitions, 331 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-02-07 19:04:16,768 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 172 flow [2024-02-07 19:04:16,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=172, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2024-02-07 19:04:16,769 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, -5 predicate places. [2024-02-07 19:04:16,769 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 172 flow [2024-02-07 19:04:16,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.666666666666668) internal successors, (112), 6 states have internal predecessors, (112), 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 19:04:16,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:04:16,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:16,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-07 19:04:16,770 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT, P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 36 more)] === [2024-02-07 19:04:16,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:04:16,771 INFO L85 PathProgramCache]: Analyzing trace with hash -147228499, now seen corresponding path program 1 times [2024-02-07 19:04:16,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:04:16,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457468167] [2024-02-07 19:04:16,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:04:16,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:04:16,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:04:16,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:04:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:04:16,851 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:04:16,852 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:04:16,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 39 remaining) [2024-02-07 19:04:16,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 39 remaining) [2024-02-07 19:04:16,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 39 remaining) [2024-02-07 19:04:16,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 39 remaining) [2024-02-07 19:04:16,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 39 remaining) [2024-02-07 19:04:16,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 39 remaining) [2024-02-07 19:04:16,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 39 remaining) [2024-02-07 19:04:16,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 39 remaining) [2024-02-07 19:04:16,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 39 remaining) [2024-02-07 19:04:16,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 39 remaining) [2024-02-07 19:04:16,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 39 remaining) [2024-02-07 19:04:16,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (27 of 39 remaining) [2024-02-07 19:04:16,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (26 of 39 remaining) [2024-02-07 19:04:16,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (25 of 39 remaining) [2024-02-07 19:04:16,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 39 remaining) [2024-02-07 19:04:16,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 39 remaining) [2024-02-07 19:04:16,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 39 remaining) [2024-02-07 19:04:16,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 39 remaining) [2024-02-07 19:04:16,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 39 remaining) [2024-02-07 19:04:16,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 39 remaining) [2024-02-07 19:04:16,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 39 remaining) [2024-02-07 19:04:16,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION (17 of 39 remaining) [2024-02-07 19:04:16,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 39 remaining) [2024-02-07 19:04:16,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 39 remaining) [2024-02-07 19:04:16,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 39 remaining) [2024-02-07 19:04:16,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 39 remaining) [2024-02-07 19:04:16,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err1ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 39 remaining) [2024-02-07 19:04:16,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err2ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 39 remaining) [2024-02-07 19:04:16,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err3ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 39 remaining) [2024-02-07 19:04:16,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 39 remaining) [2024-02-07 19:04:16,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 39 remaining) [2024-02-07 19:04:16,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 39 remaining) [2024-02-07 19:04:16,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 39 remaining) [2024-02-07 19:04:16,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 39 remaining) [2024-02-07 19:04:16,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 39 remaining) [2024-02-07 19:04:16,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 39 remaining) [2024-02-07 19:04:16,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 39 remaining) [2024-02-07 19:04:16,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 39 remaining) [2024-02-07 19:04:16,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 39 remaining) [2024-02-07 19:04:16,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-02-07 19:04:16,864 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 19:04:16,871 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 19:04:16,871 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 19:04:16,930 INFO L503 ceAbstractionStarter]: Automizer considered 21 witness invariants [2024-02-07 19:04:16,931 INFO L504 ceAbstractionStarter]: WitnessConsidered=21 [2024-02-07 19:04:16,931 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 07:04:16 BasicIcfg [2024-02-07 19:04:16,932 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 19:04:16,932 INFO L158 Benchmark]: Toolchain (without parser) took 10179.14ms. Allocated memory was 132.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 77.5MB in the beginning and 954.3MB in the end (delta: -876.8MB). Peak memory consumption was 188.2MB. Max. memory is 16.1GB. [2024-02-07 19:04:16,932 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 132.1MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:04:16,933 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 132.1MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 19:04:16,933 INFO L158 Benchmark]: CACSL2BoogieTranslator took 732.03ms. Allocated memory is still 132.1MB. Free memory was 77.5MB in the beginning and 85.5MB in the end (delta: -8.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-02-07 19:04:16,933 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.65ms. Allocated memory is still 132.1MB. Free memory was 85.5MB in the beginning and 83.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:04:16,933 INFO L158 Benchmark]: Boogie Preprocessor took 53.40ms. Allocated memory is still 132.1MB. Free memory was 83.4MB in the beginning and 80.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 19:04:16,934 INFO L158 Benchmark]: RCFGBuilder took 576.54ms. Allocated memory is still 132.1MB. Free memory was 80.6MB in the beginning and 49.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-02-07 19:04:16,934 INFO L158 Benchmark]: TraceAbstraction took 8740.69ms. Allocated memory was 132.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 48.5MB in the beginning and 954.3MB in the end (delta: -905.8MB). Peak memory consumption was 161.6MB. Max. memory is 16.1GB. [2024-02-07 19:04:16,935 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 132.1MB. Free memory is still 85.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 132.1MB. Free memory is still 80.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 732.03ms. Allocated memory is still 132.1MB. Free memory was 77.5MB in the beginning and 85.5MB in the end (delta: -8.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.65ms. Allocated memory is still 132.1MB. Free memory was 85.5MB in the beginning and 83.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.40ms. Allocated memory is still 132.1MB. Free memory was 83.4MB in the beginning and 80.6MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 576.54ms. Allocated memory is still 132.1MB. Free memory was 80.6MB in the beginning and 49.2MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8740.69ms. Allocated memory was 132.1MB in the beginning and 1.2GB in the end (delta: 1.1GB). Free memory was 48.5MB in the beginning and 954.3MB in the end (delta: -905.8MB). Peak memory consumption was 161.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 791]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p2_EAX = 0; [L713] 0 int __unbuffered_p2_EBX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L721] 0 int z = 0; [L778] 0 pthread_t t2299; [L779] FCALL, FORK 0 pthread_create(&t2299, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2299={5:0}, x=0, y=0, z=0] [L725] 1 z = 1 [L726] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=1] [L780] 0 pthread_t t2300; [L781] FCALL, FORK 0 pthread_create(&t2300, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2299={5:0}, t2300={6:0}, x=0, y=0, z=1] [L740] 2 x = 2 [L741] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=2, y=0, z=1] [L782] 0 pthread_t t2301; [L728] 1 x = 1 [L729] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0, z=1] [L783] FCALL, FORK 0 pthread_create(&t2301, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t2299={5:0}, t2300={6:0}, t2301={3:0}, x=1, y=0, z=1] [L755] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[y]],BinaryExpression[COMPLEQ,IdentifierExpression[y],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]]]] [L755] 3 __unbuffered_p2_EAX = y [L756] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0, z=1] [L743] 2 y = 1 [L744] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[y],IntegerLiteral[1]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L758] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[z]],BinaryExpression[COMPLEQ,IdentifierExpression[z],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[z],IntegerLiteral[1]]]]]] [L758] 3 __unbuffered_p2_EBX = z [L759] 3 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EBX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L733] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L733] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L734] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=1, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L748] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L748] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L749] 2 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=2, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L763] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L763] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L764] 3 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[__unbuffered_cnt]]]] VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1, z=1] [L785] 0 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_cnt]]]] [L785] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L786] 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=3, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2299={5:0}, t2300={6:0}, t2301={3:0}, x=1, y=1, z=1] [L787] 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]]]]]] [L787] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L787] RET 0 assume_abort_if_not(main$tmp_guard0) [L791] 0 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EBX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[1]]],BinaryExpression[COMPEQ,IdentifierExpression[x],IntegerLiteral[2]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]],BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[__unbuffered_p2_EAX]],BinaryExpression[COMPLEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EAX],IntegerLiteral[1]]]]]],BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[0]],BinaryExpression[COMPEQ,IdentifierExpression[__unbuffered_p2_EBX],IntegerLiteral[1]]]]]] VAL [__unbuffered_cnt=3, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t2299={5:0}, t2300={6:0}, t2301={3:0}, x=1, y=1, z=1] - UnprovableResult [Line: 726]: 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: 733]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 741]: 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: 748]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 749]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 755]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 756]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 758]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 759]: 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: 785]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 786]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 787]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 792]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 793]: 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: 783]: 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: 779]: 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: 781]: 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 7 procedures, 98 locations, 39 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: 8.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 351 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 349 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 688 IncrementalHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 0 mSDtfsCounter, 688 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=172occurred in iteration=11, InterpolantAutomatonStates: 38, 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, 0.7s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 275 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 19:04:16,974 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