./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.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/28-race_reach_61-invariant_racing.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/goblint-regression/28-race_reach_61-invariant_racing.i ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/28-race_reach_61-invariant_racing.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 19:32:17,827 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 19:32:17,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 19:32:17,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 19:32:17,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 19:32:17,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 19:32:17,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 19:32:17,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 19:32:17,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 19:32:17,929 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 19:32:17,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 19:32:17,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 19:32:17,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 19:32:17,932 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 19:32:17,933 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 19:32:17,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 19:32:17,934 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 19:32:17,937 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 19:32:17,937 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 19:32:17,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 19:32:17,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 19:32:17,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 19:32:17,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 19:32:17,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 19:32:17,940 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 19:32:17,940 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 19:32:17,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 19:32:17,941 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 19:32:17,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 19:32:17,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 19:32:17,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 19:32:17,942 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 19:32:17,942 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:32:17,942 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 19:32:17,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 19:32:17,942 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 19:32:17,943 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 19:32:17,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 19:32:17,943 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 19:32:17,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 19:32:17,943 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 19:32:17,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 19:32:17,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 19:32:17,945 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 19:32:18,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 19:32:18,156 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 19:32:18,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 19:32:18,159 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 19:32:18,159 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 19:32:18,160 INFO L431 ainManager$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/28-race_reach_61-invariant_racing.yml/witness.yml [2024-02-07 19:32:18,310 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 19:32:18,311 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 19:32:18,312 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2024-02-07 19:32:19,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 19:32:19,572 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 19:32:19,573 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2024-02-07 19:32:19,584 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716ef2a0a/2d66b769c73c4f77972d80f54b401a62/FLAG1cf80bec9 [2024-02-07 19:32:19,598 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716ef2a0a/2d66b769c73c4f77972d80f54b401a62 [2024-02-07 19:32:19,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 19:32:19,599 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 19:32:19,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 19:32:19,602 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 19:32:19,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 19:32:19,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:18" (1/2) ... [2024-02-07 19:32:19,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d271a7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:32:19, skipping insertion in model container [2024-02-07 19:32:19,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:18" (1/2) ... [2024-02-07 19:32:19,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7e534a4c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 07:32:19, skipping insertion in model container [2024-02-07 19:32:19,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:32:19" (2/2) ... [2024-02-07 19:32:19,608 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61d271a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:19, skipping insertion in model container [2024-02-07 19:32:19,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 07:32:19" (2/2) ... [2024-02-07 19:32:19,609 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 19:32:19,640 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 19:32:19,641 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] -2147483647 <= x [2024-02-07 19:32:19,641 INFO L76 edCorrectnessWitness]: Location invariant before [L713-L713] ((((((((((((((((((((((((i == 19 || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 19:32:19,641 INFO L76 edCorrectnessWitness]: Location invariant after [L718-L718] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:19,641 INFO L76 edCorrectnessWitness]: Location invariant after [L714-L714] -2147483647 <= x [2024-02-07 19:32:19,641 INFO L76 edCorrectnessWitness]: Location invariant after [L713-L713] ((((((((((((((((((((((((i == 19 || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0)) || (25 <= i && i <= 9999)) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20 [2024-02-07 19:32:19,642 INFO L76 edCorrectnessWitness]: Location invariant after [L714-L714] x <= 2147483646 [2024-02-07 19:32:19,642 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] x <= 2147483646 [2024-02-07 19:32:19,642 INFO L76 edCorrectnessWitness]: Location invariant after [L708-L708] -2147483647 <= x [2024-02-07 19:32:19,642 INFO L76 edCorrectnessWitness]: Location invariant before [L714-L714] x <= 2147483646 [2024-02-07 19:32:19,642 INFO L76 edCorrectnessWitness]: Location invariant before [L708-L708] -2147483647 <= x [2024-02-07 19:32:19,642 INFO L76 edCorrectnessWitness]: Location invariant before [L718-L718] (((((((((((((((((((((((((25 <= i && i <= 9999) || i == 24) || i == 23) || i == 22) || i == 21) || i == 20) || i == 19) || i == 18) || i == 17) || i == 16) || i == 15) || i == 14) || i == 13) || i == 12) || i == 11) || i == 10) || i == 9) || i == 8) || i == 7) || i == 6) || i == 5) || i == 4) || i == 3) || i == 2) || i == 1) || (0 == i && i == 0) [2024-02-07 19:32:19,642 INFO L76 edCorrectnessWitness]: Location invariant after [L708-L708] x <= 2147483646 [2024-02-07 19:32:19,690 INFO L181 MainTranslator]: Built tables and reachable declarations [2024-02-07 19:32:19,971 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] [2024-02-07 19:32:19,995 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:32:20,016 INFO L206 MainTranslator]: Completed pre-run [2024-02-07 19:32:20,062 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i[30176,30189] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-02-07 19:32:20,114 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-07 19:32:20,159 INFO L211 MainTranslator]: Completed translation [2024-02-07 19:32:20,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20 WrapperNode [2024-02-07 19:32:20,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 19:32:20,160 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 19:32:20,161 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 19:32:20,161 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 19:32:20,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,179 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,211 INFO L138 Inliner]: procedures = 171, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 110 [2024-02-07 19:32:20,212 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 19:32:20,213 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 19:32:20,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 19:32:20,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 19:32:20,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,252 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,271 INFO L175 MemorySlicer]: Split 14 memory accesses to 4 slices as follows [2, 5, 5, 2]. 36 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2024-02-07 19:32:20,271 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,271 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,275 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,277 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,278 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,279 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 19:32:20,282 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 19:32:20,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 19:32:20,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 19:32:20,296 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (1/1) ... [2024-02-07 19:32:20,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 19:32:20,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:20,335 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 19:32:20,337 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 19:32:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 19:32:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 19:32:20,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 19:32:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-07 19:32:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 19:32:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 19:32:20,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 19:32:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-07 19:32:20,396 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-02-07 19:32:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 19:32:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 19:32:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-02-07 19:32:20,397 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-02-07 19:32:20,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 19:32:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 19:32:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 19:32:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 19:32:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-07 19:32:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-02-07 19:32:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 19:32:20,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 19:32:20,400 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 19:32:20,501 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 19:32:20,502 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 19:32:20,782 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 19:32:20,785 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 19:32:20,872 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 19:32:20,872 INFO L320 CfgBuilder]: Removed 16 assume(true) statements. [2024-02-07 19:32:20,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:32:20 BoogieIcfgContainer [2024-02-07 19:32:20,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 19:32:20,874 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 19:32:20,874 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 19:32:20,877 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 19:32:20,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 07:32:18" (1/4) ... [2024-02-07 19:32:20,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4760167a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 07:32:20, skipping insertion in model container [2024-02-07 19:32:20,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 07:32:19" (2/4) ... [2024-02-07 19:32:20,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4760167a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:32:20, skipping insertion in model container [2024-02-07 19:32:20,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 07:32:20" (3/4) ... [2024-02-07 19:32:20,878 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4760167a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 07:32:20, skipping insertion in model container [2024-02-07 19:32:20,878 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 07:32:20" (4/4) ... [2024-02-07 19:32:20,879 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2024-02-07 19:32:20,892 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 19:32:20,892 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2024-02-07 19:32:20,892 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 19:32:20,946 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-02-07 19:32:20,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 90 transitions, 187 flow [2024-02-07 19:32:21,038 INFO L124 PetriNetUnfolderBase]: 26/132 cut-off events. [2024-02-07 19:32:21,039 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-07 19:32:21,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 132 events. 26/132 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 472 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 83. Up to 6 conditions per place. [2024-02-07 19:32:21,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 90 transitions, 187 flow [2024-02-07 19:32:21,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 89 transitions, 185 flow [2024-02-07 19:32:21,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:21,069 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;@37a33b06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:21,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-02-07 19:32:21,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:21,074 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 19:32:21,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:21,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:21,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:21,075 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-02-07 19:32:21,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash 408916449, now seen corresponding path program 1 times [2024-02-07 19:32:21,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:21,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824564130] [2024-02-07 19:32:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:21,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:21,478 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 19:32:21,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:21,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824564130] [2024-02-07 19:32:21,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824564130] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:21,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:21,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:21,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657563117] [2024-02-07 19:32:21,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:21,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:21,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:21,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:21,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:21,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 90 [2024-02-07 19:32:21,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 89 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 19:32:21,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:21,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 90 [2024-02-07 19:32:21,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:21,621 INFO L124 PetriNetUnfolderBase]: 49/177 cut-off events. [2024-02-07 19:32:21,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:21,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 177 events. 49/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 550 event pairs, 30 based on Foata normal form. 15/182 useless extension candidates. Maximal degree in co-relation 274. Up to 94 conditions per place. [2024-02-07 19:32:21,624 INFO L140 encePairwiseOnDemand]: 80/90 looper letters, 34 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-02-07 19:32:21,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 184 flow [2024-02-07 19:32:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:21,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:21,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-02-07 19:32:21,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2024-02-07 19:32:21,635 INFO L175 Difference]: Start difference. First operand has 76 places, 89 transitions, 185 flow. Second operand 4 states and 183 transitions. [2024-02-07 19:32:21,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 184 flow [2024-02-07 19:32:21,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 184 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:32:21,639 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 84 flow [2024-02-07 19:32:21,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-02-07 19:32:21,643 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -33 predicate places. [2024-02-07 19:32:21,643 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 84 flow [2024-02-07 19:32:21,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 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 19:32:21,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:21,644 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2024-02-07 19:32:21,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 19:32:21,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 7 more)] === [2024-02-07 19:32:21,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash 2126697743, now seen corresponding path program 1 times [2024-02-07 19:32:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:21,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251455358] [2024-02-07 19:32:21,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:21,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:32:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:21,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:32:21,682 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:32:21,683 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-02-07 19:32:21,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 10 remaining) [2024-02-07 19:32:21,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 10 remaining) [2024-02-07 19:32:21,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 10 remaining) [2024-02-07 19:32:21,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2024-02-07 19:32:21,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 10 remaining) [2024-02-07 19:32:21,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 10 remaining) [2024-02-07 19:32:21,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 10 remaining) [2024-02-07 19:32:21,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 10 remaining) [2024-02-07 19:32:21,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 10 remaining) [2024-02-07 19:32:21,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 19:32:21,687 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2024-02-07 19:32:21,689 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:32:21,689 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-02-07 19:32:21,708 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 19:32:21,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 130 transitions, 276 flow [2024-02-07 19:32:21,737 INFO L124 PetriNetUnfolderBase]: 44/227 cut-off events. [2024-02-07 19:32:21,737 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2024-02-07 19:32:21,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 227 events. 44/227 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1014 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 138. Up to 9 conditions per place. [2024-02-07 19:32:21,743 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 130 transitions, 276 flow [2024-02-07 19:32:21,746 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 130 transitions, 276 flow [2024-02-07 19:32:21,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:21,750 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;@37a33b06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:21,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-02-07 19:32:21,752 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:21,753 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 19:32:21,753 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:21,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:21,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:21,754 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 19:32:21,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash 533012617, now seen corresponding path program 1 times [2024-02-07 19:32:21,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:21,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239172139] [2024-02-07 19:32:21,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:21,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:21,807 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 19:32:21,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:21,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239172139] [2024-02-07 19:32:21,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239172139] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:21,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:21,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:21,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534018983] [2024-02-07 19:32:21,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:21,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:21,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:21,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:21,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 130 [2024-02-07 19:32:21,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 130 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 19:32:21,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:21,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 130 [2024-02-07 19:32:21,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:23,664 INFO L124 PetriNetUnfolderBase]: 11746/22772 cut-off events. [2024-02-07 19:32:23,665 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2024-02-07 19:32:23,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40656 conditions, 22772 events. 11746/22772 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 201016 event pairs, 4668 based on Foata normal form. 4421/25832 useless extension candidates. Maximal degree in co-relation 19944. Up to 17165 conditions per place. [2024-02-07 19:32:23,787 INFO L140 encePairwiseOnDemand]: 105/130 looper letters, 105 selfloop transitions, 3 changer transitions 0/158 dead transitions. [2024-02-07 19:32:23,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 158 transitions, 548 flow [2024-02-07 19:32:23,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-07 19:32:23,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-07 19:32:23,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 350 transitions. [2024-02-07 19:32:23,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6730769230769231 [2024-02-07 19:32:23,790 INFO L175 Difference]: Start difference. First operand has 110 places, 130 transitions, 276 flow. Second operand 4 states and 350 transitions. [2024-02-07 19:32:23,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 158 transitions, 548 flow [2024-02-07 19:32:23,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 158 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 19:32:23,794 INFO L231 Difference]: Finished difference. Result has 115 places, 110 transitions, 252 flow [2024-02-07 19:32:23,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=252, PETRI_PLACES=115, PETRI_TRANSITIONS=110} [2024-02-07 19:32:23,795 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 5 predicate places. [2024-02-07 19:32:23,795 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 110 transitions, 252 flow [2024-02-07 19:32:23,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.25) internal successors, (205), 4 states have internal predecessors, (205), 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 19:32:23,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:23,796 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2024-02-07 19:32:23,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 19:32:23,797 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 19:32:23,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:23,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2134008539, now seen corresponding path program 1 times [2024-02-07 19:32:23,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:23,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195143142] [2024-02-07 19:32:23,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:23,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:23,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195143142] [2024-02-07 19:32:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195143142] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-07 19:32:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128986559] [2024-02-07 19:32:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:23,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:23,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 19:32:23,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-07 19:32:23,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-07 19:32:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:24,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-07 19:32:24,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-07 19:32:24,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:24,028 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-07 19:32:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-07 19:32:24,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128986559] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-07 19:32:24,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-07 19:32:24,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2024-02-07 19:32:24,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179477540] [2024-02-07 19:32:24,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-07 19:32:24,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-07 19:32:24,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-07 19:32:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-07 19:32:24,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 130 [2024-02-07 19:32:24,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 110 transitions, 252 flow. Second operand has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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 19:32:24,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:24,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 130 [2024-02-07 19:32:24,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 19:32:24,332 INFO L124 PetriNetUnfolderBase]: 1830/3497 cut-off events. [2024-02-07 19:32:24,333 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-02-07 19:32:24,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7006 conditions, 3497 events. 1830/3497 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24484 event pairs, 252 based on Foata normal form. 512/3883 useless extension candidates. Maximal degree in co-relation 6456. Up to 2277 conditions per place. [2024-02-07 19:32:24,349 INFO L140 encePairwiseOnDemand]: 126/130 looper letters, 82 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2024-02-07 19:32:24,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 120 transitions, 430 flow [2024-02-07 19:32:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-07 19:32:24,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-02-07 19:32:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 337 transitions. [2024-02-07 19:32:24,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5184615384615384 [2024-02-07 19:32:24,351 INFO L175 Difference]: Start difference. First operand has 115 places, 110 transitions, 252 flow. Second operand 5 states and 337 transitions. [2024-02-07 19:32:24,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 120 transitions, 430 flow [2024-02-07 19:32:24,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 120 transitions, 424 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-02-07 19:32:24,354 INFO L231 Difference]: Finished difference. Result has 80 places, 72 transitions, 164 flow [2024-02-07 19:32:24,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=130, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=80, PETRI_TRANSITIONS=72} [2024-02-07 19:32:24,355 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -30 predicate places. [2024-02-07 19:32:24,355 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 72 transitions, 164 flow [2024-02-07 19:32:24,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.8) internal successors, (259), 5 states have internal predecessors, (259), 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 19:32:24,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:24,356 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-02-07 19:32:24,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-07 19:32:24,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-07 19:32:24,571 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 9 more)] === [2024-02-07 19:32:24,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2082787399, now seen corresponding path program 1 times [2024-02-07 19:32:24,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:24,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959099588] [2024-02-07 19:32:24,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:24,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:24,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 19:32:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 19:32:24,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 19:32:24,595 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 19:32:24,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 12 remaining) [2024-02-07 19:32:24,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 12 remaining) [2024-02-07 19:32:24,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 12 remaining) [2024-02-07 19:32:24,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 12 remaining) [2024-02-07 19:32:24,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 12 remaining) [2024-02-07 19:32:24,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 12 remaining) [2024-02-07 19:32:24,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 12 remaining) [2024-02-07 19:32:24,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 12 remaining) [2024-02-07 19:32:24,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 12 remaining) [2024-02-07 19:32:24,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 12 remaining) [2024-02-07 19:32:24,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 12 remaining) [2024-02-07 19:32:24,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 12 remaining) [2024-02-07 19:32:24,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 19:32:24,597 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-02-07 19:32:24,598 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-02-07 19:32:24,598 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-02-07 19:32:24,621 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-07 19:32:24,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 144 places, 170 transitions, 367 flow [2024-02-07 19:32:24,646 INFO L124 PetriNetUnfolderBase]: 65/337 cut-off events. [2024-02-07 19:32:24,646 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2024-02-07 19:32:24,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 337 events. 65/337 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1669 event pairs, 1 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 240. Up to 12 conditions per place. [2024-02-07 19:32:24,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 144 places, 170 transitions, 367 flow [2024-02-07 19:32:24,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 170 transitions, 367 flow [2024-02-07 19:32:24,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 19:32:24,652 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;@37a33b06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 19:32:24,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-02-07 19:32:24,654 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 19:32:24,654 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2024-02-07 19:32:24,654 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 19:32:24,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 19:32:24,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 19:32:24,654 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 11 more)] === [2024-02-07 19:32:24,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 19:32:24,655 INFO L85 PathProgramCache]: Analyzing trace with hash 695280985, now seen corresponding path program 1 times [2024-02-07 19:32:24,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 19:32:24,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687226771] [2024-02-07 19:32:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 19:32:24,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 19:32:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 19:32:24,685 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 19:32:24,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 19:32:24,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687226771] [2024-02-07 19:32:24,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687226771] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 19:32:24,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 19:32:24,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 19:32:24,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973448778] [2024-02-07 19:32:24,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 19:32:24,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-07 19:32:24,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 19:32:24,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-07 19:32:24,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-07 19:32:24,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 170 [2024-02-07 19:32:24,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 170 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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 19:32:24,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 19:32:24,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 170 [2024-02-07 19:32:24,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand