./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c --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/test-easy6.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 958ec4d9 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/weaver/test-easy6.wvr.c ./goblint.2024-02-07_10-47-16.files/SV-COMP24_unreach-call/test-easy6.wvr.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-dev-958ec4d-m [2024-02-07 14:43:04,157 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-07 14:43:04,234 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-07 14:43:04,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-07 14:43:04,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-07 14:43:04,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-07 14:43:04,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-07 14:43:04,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-07 14:43:04,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-07 14:43:04,281 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-07 14:43:04,281 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-07 14:43:04,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-07 14:43:04,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-07 14:43:04,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-07 14:43:04,284 INFO L153 SettingsManager]: * Use SBE=true [2024-02-07 14:43:04,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-07 14:43:04,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-07 14:43:04,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-07 14:43:04,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-07 14:43:04,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-07 14:43:04,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-07 14:43:04,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-07 14:43:04,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-07 14:43:04,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-07 14:43:04,288 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-07 14:43:04,288 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-07 14:43:04,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-07 14:43:04,288 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-07 14:43:04,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-07 14:43:04,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-07 14:43:04,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-07 14:43:04,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-07 14:43:04,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:43:04,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-07 14:43:04,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-07 14:43:04,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-07 14:43:04,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-07 14:43:04,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-07 14:43:04,292 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-07 14:43:04,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-07 14:43:04,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-07 14:43:04,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-07 14:43:04,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-07 14:43:04,293 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-02-07 14:43:04,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-07 14:43:04,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-07 14:43:04,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-07 14:43:04,553 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-02-07 14:43:04,553 INFO L274 PluginConnector]: Witness Parser initialized [2024-02-07 14:43:04,554 INFO L431 ainManager$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/test-easy6.wvr.yml/witness.yml [2024-02-07 14:43:04,688 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-07 14:43:04,689 INFO L274 PluginConnector]: CDTParser initialized [2024-02-07 14:43:04,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-02-07 14:43:05,836 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-07 14:43:06,029 INFO L384 CDTParser]: Found 1 translation units. [2024-02-07 14:43:06,029 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2024-02-07 14:43:06,036 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e132a925c/eadb1e92abd84d2793121da90f01ba81/FLAGf46f8687f [2024-02-07 14:43:06,050 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e132a925c/eadb1e92abd84d2793121da90f01ba81 [2024-02-07 14:43:06,050 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-07 14:43:06,051 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-07 14:43:06,053 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-07 14:43:06,053 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-07 14:43:06,058 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-07 14:43:06,059 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:04" (1/2) ... [2024-02-07 14:43:06,060 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31eed48 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:06, skipping insertion in model container [2024-02-07 14:43:06,060 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:04" (1/2) ... [2024-02-07 14:43:06,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b280f11 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 07.02 02:43:06, skipping insertion in model container [2024-02-07 14:43:06,062 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:43:06" (2/2) ... [2024-02-07 14:43:06,062 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31eed48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06, skipping insertion in model container [2024-02-07 14:43:06,063 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 02:43:06" (2/2) ... [2024-02-07 14:43:06,063 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-02-07 14:43:06,089 INFO L74 edCorrectnessWitness]: Found the following entries in the witness: [2024-02-07 14:43:06,094 INFO L76 edCorrectnessWitness]: Location invariant before [L59-L59] ((0 <= n1) && (1 <= n2)) && (n2 != 0) [2024-02-07 14:43:06,094 INFO L76 edCorrectnessWitness]: Location invariant before [L62-L62] 0 <= i [2024-02-07 14:43:06,094 INFO L76 edCorrectnessWitness]: Location invariant before [L82-L82] 0 <= tmp2 [2024-02-07 14:43:06,094 INFO L76 edCorrectnessWitness]: Location invariant before [L66-L66] 1 <= i [2024-02-07 14:43:06,095 INFO L76 edCorrectnessWitness]: Location invariant before [L94-L94] 0 <= i [2024-02-07 14:43:06,095 INFO L76 edCorrectnessWitness]: Location invariant before [L77-L77] e2 == (_Bool)1 [2024-02-07 14:43:06,095 INFO L76 edCorrectnessWitness]: Location invariant before [L88-L88] e1 == (_Bool)0 || e1 == (_Bool)1 [2024-02-07 14:43:06,095 INFO L76 edCorrectnessWitness]: Location invariant before [L65-L65] 0 <= i1 [2024-02-07 14:43:06,095 INFO L76 edCorrectnessWitness]: Location invariant before [L54-L54] e1 == (_Bool)0 [2024-02-07 14:43:06,096 INFO L76 edCorrectnessWitness]: Location invariant before [L50-L50] 0 <= tmp1 [2024-02-07 14:43:06,096 INFO L76 edCorrectnessWitness]: Location invariant before [L101-L101] n2 == 0 [2024-02-07 14:43:06,096 INFO L76 edCorrectnessWitness]: Location invariant before [L98-L98] 1 <= i [2024-02-07 14:43:06,096 INFO L76 edCorrectnessWitness]: Location invariant before [L45-L45] e1 == (_Bool)1 [2024-02-07 14:43:06,096 INFO L76 edCorrectnessWitness]: Location invariant before [L83-L83] 1 <= n2 [2024-02-07 14:43:06,097 INFO L76 edCorrectnessWitness]: Location invariant before [L79-L79] 0 <= n1 [2024-02-07 14:43:06,097 INFO L76 edCorrectnessWitness]: Location invariant before [L86-L86] e2 == (_Bool)0 [2024-02-07 14:43:06,097 INFO L76 edCorrectnessWitness]: Location invariant before [L115-L115] 0 <= i [2024-02-07 14:43:06,097 INFO L76 edCorrectnessWitness]: Location invariant before [L69-L69] n1 == 0 [2024-02-07 14:43:06,098 INFO L76 edCorrectnessWitness]: Location invariant before [L51-L51] 1 <= n1 [2024-02-07 14:43:06,098 INFO L76 edCorrectnessWitness]: Location invariant before [L80-L80] 0 <= tmp2 [2024-02-07 14:43:06,098 INFO L76 edCorrectnessWitness]: Location invariant before [L63-L63] 0 <= i1 [2024-02-07 14:43:06,098 INFO L76 edCorrectnessWitness]: Location invariant before [L97-L97] 0 <= i2 [2024-02-07 14:43:06,099 INFO L76 edCorrectnessWitness]: Location invariant before [L91-L91] ((0 <= n2) && (1 <= n1)) && (n1 != 0) [2024-02-07 14:43:06,099 INFO L76 edCorrectnessWitness]: Location invariant before [L48-L48] 0 <= tmp1 [2024-02-07 14:43:06,099 INFO L76 edCorrectnessWitness]: Location invariant before [L47-L47] 0 <= n2 [2024-02-07 14:43:06,099 INFO L76 edCorrectnessWitness]: Location invariant before [L56-L56] e2 == (_Bool)0 || e2 == (_Bool)1 [2024-02-07 14:43:06,100 INFO L76 edCorrectnessWitness]: Location invariant before [L95-L95] 0 <= i2 [2024-02-07 14:43:06,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2024-02-07 14:43:06,363 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3072,3085] [2024-02-07 14:43:06,368 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:43:06,383 INFO L203 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local 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 14:43:06,467 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c[3072,3085] [2024-02-07 14:43:06,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-07 14:43:06,485 INFO L207 MainTranslator]: Completed translation [2024-02-07 14:43:06,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06 WrapperNode [2024-02-07 14:43:06,486 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-07 14:43:06,488 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-07 14:43:06,489 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-07 14:43:06,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-07 14:43:06,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,505 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,551 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 151 [2024-02-07 14:43:06,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-07 14:43:06,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-07 14:43:06,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-07 14:43:06,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-07 14:43:06,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,575 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,599 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-02-07 14:43:06,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,620 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,622 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-07 14:43:06,626 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-07 14:43:06,626 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-07 14:43:06,626 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-07 14:43:06,627 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (1/1) ... [2024-02-07 14:43:06,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-07 14:43:06,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-07 14:43:06,657 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 14:43:06,686 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 14:43:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-07 14:43:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-07 14:43:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-07 14:43:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-07 14:43:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-07 14:43:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-07 14:43:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-07 14:43:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-07 14:43:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-07 14:43:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-07 14:43:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-07 14:43:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-07 14:43:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-07 14:43:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-07 14:43:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-07 14:43:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-07 14:43:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-07 14:43:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-07 14:43:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-07 14:43:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-07 14:43:06,706 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 14:43:06,824 INFO L244 CfgBuilder]: Building ICFG [2024-02-07 14:43:06,826 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-07 14:43:07,090 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-07 14:43:07,090 INFO L293 CfgBuilder]: Performing block encoding [2024-02-07 14:43:07,263 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-07 14:43:07,264 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-02-07 14:43:07,264 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:43:07 BoogieIcfgContainer [2024-02-07 14:43:07,264 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-07 14:43:07,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-07 14:43:07,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-07 14:43:07,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-07 14:43:07,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 07.02 02:43:04" (1/4) ... [2024-02-07 14:43:07,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c21ffa and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 07.02 02:43:07, skipping insertion in model container [2024-02-07 14:43:07,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 02:43:06" (2/4) ... [2024-02-07 14:43:07,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c21ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:43:07, skipping insertion in model container [2024-02-07 14:43:07,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 02:43:06" (3/4) ... [2024-02-07 14:43:07,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c21ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 02:43:07, skipping insertion in model container [2024-02-07 14:43:07,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.02 02:43:07" (4/4) ... [2024-02-07 14:43:07,276 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-02-07 14:43:07,291 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-07 14:43:07,292 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2024-02-07 14:43:07,292 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-07 14:43:07,347 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-07 14:43:07,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 63 transitions, 140 flow [2024-02-07 14:43:07,444 INFO L124 PetriNetUnfolderBase]: 0/61 cut-off events. [2024-02-07 14:43:07,445 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 14:43:07,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70 conditions, 61 events. 0/61 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-02-07 14:43:07,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 70 places, 63 transitions, 140 flow [2024-02-07 14:43:07,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 67 places, 60 transitions, 132 flow [2024-02-07 14:43:07,468 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-07 14:43:07,475 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;@7eddd54, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-07 14:43:07,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2024-02-07 14:43:07,479 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-07 14:43:07,487 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-02-07 14:43:07,487 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-02-07 14:43:07,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:07,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-02-07 14:43:07,488 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-02-07 14:43:07,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:07,493 INFO L85 PathProgramCache]: Analyzing trace with hash 12452978, now seen corresponding path program 1 times [2024-02-07 14:43:07,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:07,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730960740] [2024-02-07 14:43:07,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:07,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:07,778 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 14:43:07,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:07,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730960740] [2024-02-07 14:43:07,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730960740] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:07,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:07,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:43:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645653543] [2024-02-07 14:43:07,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:07,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-02-07 14:43:07,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:07,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-02-07 14:43:07,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-02-07 14:43:07,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 63 [2024-02-07 14:43:07,833 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 14:43:07,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:07,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 63 [2024-02-07 14:43:07,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:08,143 INFO L124 PetriNetUnfolderBase]: 864/1519 cut-off events. [2024-02-07 14:43:08,144 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2024-02-07 14:43:08,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3090 conditions, 1519 events. 864/1519 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7170 event pairs, 864 based on Foata normal form. 0/1083 useless extension candidates. Maximal degree in co-relation 2923. Up to 1514 conditions per place. [2024-02-07 14:43:08,164 INFO L140 encePairwiseOnDemand]: 49/63 looper letters, 41 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-02-07 14:43:08,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 186 flow [2024-02-07 14:43:08,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-02-07 14:43:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-02-07 14:43:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 69 transitions. [2024-02-07 14:43:08,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-02-07 14:43:08,180 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 132 flow. Second operand 2 states and 69 transitions. [2024-02-07 14:43:08,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 186 flow [2024-02-07 14:43:08,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 178 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-02-07 14:43:08,191 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 96 flow [2024-02-07 14:43:08,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=96, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-02-07 14:43:08,197 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -17 predicate places. [2024-02-07 14:43:08,197 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 96 flow [2024-02-07 14:43:08,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 14:43:08,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:08,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-02-07 14:43:08,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-07 14:43:08,199 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-02-07 14:43:08,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:08,200 INFO L85 PathProgramCache]: Analyzing trace with hash 386042753, now seen corresponding path program 1 times [2024-02-07 14:43:08,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:08,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309537402] [2024-02-07 14:43:08,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:08,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:08,303 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 14:43:08,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:08,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309537402] [2024-02-07 14:43:08,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309537402] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:08,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:08,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:43:08,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762300483] [2024-02-07 14:43:08,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:08,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:08,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:08,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:08,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:08,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 63 [2024-02-07 14:43:08,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 14:43:08,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:08,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 63 [2024-02-07 14:43:08,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:08,610 INFO L124 PetriNetUnfolderBase]: 710/1259 cut-off events. [2024-02-07 14:43:08,610 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-07 14:43:08,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2525 conditions, 1259 events. 710/1259 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5685 event pairs, 352 based on Foata normal form. 0/916 useless extension candidates. Maximal degree in co-relation 2522. Up to 853 conditions per place. [2024-02-07 14:43:08,619 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 55 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2024-02-07 14:43:08,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 63 transitions, 247 flow [2024-02-07 14:43:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:08,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-02-07 14:43:08,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-02-07 14:43:08,622 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 96 flow. Second operand 3 states and 81 transitions. [2024-02-07 14:43:08,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 63 transitions, 247 flow [2024-02-07 14:43:08,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 63 transitions, 247 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-02-07 14:43:08,626 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 109 flow [2024-02-07 14:43:08,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-02-07 14:43:08,627 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -14 predicate places. [2024-02-07 14:43:08,627 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 109 flow [2024-02-07 14:43:08,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 14:43:08,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:08,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-02-07 14:43:08,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-07 14:43:08,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-02-07 14:43:08,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash -917576076, now seen corresponding path program 1 times [2024-02-07 14:43:08,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:08,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782557201] [2024-02-07 14:43:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:08,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:08,684 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 14:43:08,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782557201] [2024-02-07 14:43:08,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782557201] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:08,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:08,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:08,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313486281] [2024-02-07 14:43:08,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:08,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:08,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:08,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:08,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 63 [2024-02-07 14:43:08,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 14:43:08,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:08,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 63 [2024-02-07 14:43:08,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:08,839 INFO L124 PetriNetUnfolderBase]: 659/1172 cut-off events. [2024-02-07 14:43:08,840 INFO L125 PetriNetUnfolderBase]: For 104/104 co-relation queries the response was YES. [2024-02-07 14:43:08,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2459 conditions, 1172 events. 659/1172 cut-off events. For 104/104 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 5145 event pairs, 659 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 2454. Up to 1166 conditions per place. [2024-02-07 14:43:08,847 INFO L140 encePairwiseOnDemand]: 61/63 looper letters, 39 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2024-02-07 14:43:08,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 187 flow [2024-02-07 14:43:08,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:08,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:08,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-02-07 14:43:08,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328042328042328 [2024-02-07 14:43:08,850 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 109 flow. Second operand 3 states and 62 transitions. [2024-02-07 14:43:08,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 187 flow [2024-02-07 14:43:08,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 45 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:08,855 INFO L231 Difference]: Finished difference. Result has 52 places, 45 transitions, 103 flow [2024-02-07 14:43:08,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=50, 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=103, PETRI_PLACES=52, PETRI_TRANSITIONS=45} [2024-02-07 14:43:08,857 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -15 predicate places. [2024-02-07 14:43:08,857 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 45 transitions, 103 flow [2024-02-07 14:43:08,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 14:43:08,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:08,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:08,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-02-07 14:43:08,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-02-07 14:43:08,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:08,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1581620797, now seen corresponding path program 1 times [2024-02-07 14:43:08,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:08,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854599615] [2024-02-07 14:43:08,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:08,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:08,927 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 14:43:08,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:08,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854599615] [2024-02-07 14:43:08,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854599615] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:08,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:08,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:43:08,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5736677] [2024-02-07 14:43:08,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:08,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:08,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:08,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:08,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:08,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 63 [2024-02-07 14:43:08,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 14:43:08,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:08,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 63 [2024-02-07 14:43:08,931 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:09,091 INFO L124 PetriNetUnfolderBase]: 564/1015 cut-off events. [2024-02-07 14:43:09,091 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2024-02-07 14:43:09,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2085 conditions, 1015 events. 564/1015 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4436 event pairs, 253 based on Foata normal form. 0/796 useless extension candidates. Maximal degree in co-relation 2080. Up to 706 conditions per place. [2024-02-07 14:43:09,099 INFO L140 encePairwiseOnDemand]: 58/63 looper letters, 54 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-02-07 14:43:09,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 254 flow [2024-02-07 14:43:09,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:09,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-02-07 14:43:09,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-02-07 14:43:09,105 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 103 flow. Second operand 3 states and 80 transitions. [2024-02-07 14:43:09,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 254 flow [2024-02-07 14:43:09,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-02-07 14:43:09,108 INFO L231 Difference]: Finished difference. Result has 54 places, 45 transitions, 115 flow [2024-02-07 14:43:09,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=54, PETRI_TRANSITIONS=45} [2024-02-07 14:43:09,110 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2024-02-07 14:43:09,110 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 45 transitions, 115 flow [2024-02-07 14:43:09,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 14:43:09,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:09,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:09,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-02-07 14:43:09,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-02-07 14:43:09,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:09,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1322298281, now seen corresponding path program 1 times [2024-02-07 14:43:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:09,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198294516] [2024-02-07 14:43:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:09,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:09,170 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 14:43:09,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198294516] [2024-02-07 14:43:09,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198294516] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:09,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:09,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-02-07 14:43:09,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269969855] [2024-02-07 14:43:09,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:09,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:09,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:09,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:09,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:09,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 63 [2024-02-07 14:43:09,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 14:43:09,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:09,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 63 [2024-02-07 14:43:09,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:09,322 INFO L124 PetriNetUnfolderBase]: 537/984 cut-off events. [2024-02-07 14:43:09,322 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-02-07 14:43:09,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 984 events. 537/984 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4411 event pairs, 300 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 2112. Up to 779 conditions per place. [2024-02-07 14:43:09,328 INFO L140 encePairwiseOnDemand]: 59/63 looper letters, 54 selfloop transitions, 3 changer transitions 0/62 dead transitions. [2024-02-07 14:43:09,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 274 flow [2024-02-07 14:43:09,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:09,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:09,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-02-07 14:43:09,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2024-02-07 14:43:09,331 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 115 flow. Second operand 3 states and 79 transitions. [2024-02-07 14:43:09,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 274 flow [2024-02-07 14:43:09,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 62 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:09,336 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 120 flow [2024-02-07 14:43:09,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-02-07 14:43:09,339 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -12 predicate places. [2024-02-07 14:43:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 120 flow [2024-02-07 14:43:09,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 14:43:09,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:09,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:09,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-02-07 14:43:09,340 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-02-07 14:43:09,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1785604944, now seen corresponding path program 1 times [2024-02-07 14:43:09,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:09,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800243115] [2024-02-07 14:43:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:09,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-07 14:43:09,392 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 14:43:09,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-07 14:43:09,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800243115] [2024-02-07 14:43:09,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800243115] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-07 14:43:09,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-07 14:43:09,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-07 14:43:09,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719296592] [2024-02-07 14:43:09,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-07 14:43:09,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-07 14:43:09,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-07 14:43:09,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-07 14:43:09,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-07 14:43:09,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 63 [2024-02-07 14:43:09,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 14:43:09,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-07 14:43:09,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 63 [2024-02-07 14:43:09,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-07 14:43:09,493 INFO L124 PetriNetUnfolderBase]: 515/946 cut-off events. [2024-02-07 14:43:09,494 INFO L125 PetriNetUnfolderBase]: For 153/153 co-relation queries the response was YES. [2024-02-07 14:43:09,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2067 conditions, 946 events. 515/946 cut-off events. For 153/153 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4018 event pairs, 515 based on Foata normal form. 0/809 useless extension candidates. Maximal degree in co-relation 2060. Up to 940 conditions per place. [2024-02-07 14:43:09,499 INFO L140 encePairwiseOnDemand]: 61/63 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2024-02-07 14:43:09,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 44 transitions, 196 flow [2024-02-07 14:43:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-07 14:43:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-07 14:43:09,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-02-07 14:43:09,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32275132275132273 [2024-02-07 14:43:09,501 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 120 flow. Second operand 3 states and 61 transitions. [2024-02-07 14:43:09,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 44 transitions, 196 flow [2024-02-07 14:43:09,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-02-07 14:43:09,503 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 114 flow [2024-02-07 14:43:09,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2024-02-07 14:43:09,504 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2024-02-07 14:43:09,504 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 114 flow [2024-02-07 14:43:09,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 14:43:09,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-02-07 14:43:09,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:09,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-02-07 14:43:09,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT === [thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT, thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (and 53 more)] === [2024-02-07 14:43:09,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-07 14:43:09,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1958426694, now seen corresponding path program 1 times [2024-02-07 14:43:09,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-07 14:43:09,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777734683] [2024-02-07 14:43:09,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-07 14:43:09,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-07 14:43:09,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:43:09,518 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-07 14:43:09,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-07 14:43:09,544 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-07 14:43:09,544 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-02-07 14:43:09,545 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (55 of 56 remaining) [2024-02-07 14:43:09,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (54 of 56 remaining) [2024-02-07 14:43:09,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (53 of 56 remaining) [2024-02-07 14:43:09,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (52 of 56 remaining) [2024-02-07 14:43:09,547 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (51 of 56 remaining) [2024-02-07 14:43:09,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (50 of 56 remaining) [2024-02-07 14:43:09,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (49 of 56 remaining) [2024-02-07 14:43:09,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (48 of 56 remaining) [2024-02-07 14:43:09,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err7ASSERT_VIOLATIONWITNESS_INVARIANT (47 of 56 remaining) [2024-02-07 14:43:09,548 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (46 of 56 remaining) [2024-02-07 14:43:09,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (45 of 56 remaining) [2024-02-07 14:43:09,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (44 of 56 remaining) [2024-02-07 14:43:09,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (43 of 56 remaining) [2024-02-07 14:43:09,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (42 of 56 remaining) [2024-02-07 14:43:09,549 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (41 of 56 remaining) [2024-02-07 14:43:09,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (40 of 56 remaining) [2024-02-07 14:43:09,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (39 of 56 remaining) [2024-02-07 14:43:09,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (38 of 56 remaining) [2024-02-07 14:43:09,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (37 of 56 remaining) [2024-02-07 14:43:09,550 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (36 of 56 remaining) [2024-02-07 14:43:09,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (35 of 56 remaining) [2024-02-07 14:43:09,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (34 of 56 remaining) [2024-02-07 14:43:09,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (33 of 56 remaining) [2024-02-07 14:43:09,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (32 of 56 remaining) [2024-02-07 14:43:09,551 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (31 of 56 remaining) [2024-02-07 14:43:09,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err11ASSERT_VIOLATIONWITNESS_INVARIANT (30 of 56 remaining) [2024-02-07 14:43:09,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err12ASSERT_VIOLATIONWITNESS_INVARIANT (29 of 56 remaining) [2024-02-07 14:43:09,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (28 of 56 remaining) [2024-02-07 14:43:09,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (27 of 56 remaining) [2024-02-07 14:43:09,552 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 56 remaining) [2024-02-07 14:43:09,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 56 remaining) [2024-02-07 14:43:09,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0ASSERT_VIOLATIONWITNESS_INVARIANT (24 of 56 remaining) [2024-02-07 14:43:09,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1ASSERT_VIOLATIONWITNESS_INVARIANT (23 of 56 remaining) [2024-02-07 14:43:09,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err2ASSERT_VIOLATIONWITNESS_INVARIANT (22 of 56 remaining) [2024-02-07 14:43:09,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err3ASSERT_VIOLATIONWITNESS_INVARIANT (21 of 56 remaining) [2024-02-07 14:43:09,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err4ASSERT_VIOLATIONWITNESS_INVARIANT (20 of 56 remaining) [2024-02-07 14:43:09,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err5ASSERT_VIOLATIONWITNESS_INVARIANT (19 of 56 remaining) [2024-02-07 14:43:09,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err6ASSERT_VIOLATIONWITNESS_INVARIANT (18 of 56 remaining) [2024-02-07 14:43:09,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err8ASSERT_VIOLATIONWITNESS_INVARIANT (17 of 56 remaining) [2024-02-07 14:43:09,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err9ASSERT_VIOLATIONWITNESS_INVARIANT (16 of 56 remaining) [2024-02-07 14:43:09,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err10ASSERT_VIOLATIONWITNESS_INVARIANT (15 of 56 remaining) [2024-02-07 14:43:09,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err11ASSERT_VIOLATIONWITNESS_INVARIANT (14 of 56 remaining) [2024-02-07 14:43:09,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err12ASSERT_VIOLATIONWITNESS_INVARIANT (13 of 56 remaining) [2024-02-07 14:43:09,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0ASSERT_VIOLATIONWITNESS_INVARIANT (12 of 56 remaining) [2024-02-07 14:43:09,555 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1ASSERT_VIOLATIONWITNESS_INVARIANT (11 of 56 remaining) [2024-02-07 14:43:09,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2ASSERT_VIOLATIONWITNESS_INVARIANT (10 of 56 remaining) [2024-02-07 14:43:09,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3ASSERT_VIOLATIONWITNESS_INVARIANT (9 of 56 remaining) [2024-02-07 14:43:09,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4ASSERT_VIOLATIONWITNESS_INVARIANT (8 of 56 remaining) [2024-02-07 14:43:09,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 56 remaining) [2024-02-07 14:43:09,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 56 remaining) [2024-02-07 14:43:09,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 56 remaining) [2024-02-07 14:43:09,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 56 remaining) [2024-02-07 14:43:09,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 56 remaining) [2024-02-07 14:43:09,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err10ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 56 remaining) [2024-02-07 14:43:09,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err11ASSERT_VIOLATIONWITNESS_INVARIANT (1 of 56 remaining) [2024-02-07 14:43:09,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err12ASSERT_VIOLATIONWITNESS_INVARIANT (0 of 56 remaining) [2024-02-07 14:43:09,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-02-07 14:43:09,558 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2024-02-07 14:43:09,564 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-02-07 14:43:09,565 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-02-07 14:43:09,585 INFO L503 ceAbstractionStarter]: Automizer considered 27 witness invariants [2024-02-07 14:43:09,586 INFO L504 ceAbstractionStarter]: WitnessConsidered=27 [2024-02-07 14:43:09,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.02 02:43:09 BasicIcfg [2024-02-07 14:43:09,587 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-02-07 14:43:09,587 INFO L158 Benchmark]: Toolchain (without parser) took 3535.82ms. Allocated memory was 157.3MB in the beginning and 224.4MB in the end (delta: 67.1MB). Free memory was 84.1MB in the beginning and 145.5MB in the end (delta: -61.4MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2024-02-07 14:43:09,587 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:43:09,588 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 157.3MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-02-07 14:43:09,588 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.61ms. Allocated memory is still 157.3MB. Free memory was 84.0MB in the beginning and 126.2MB in the end (delta: -42.2MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. [2024-02-07 14:43:09,588 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.33ms. Allocated memory is still 157.3MB. Free memory was 126.2MB in the beginning and 124.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:43:09,588 INFO L158 Benchmark]: Boogie Preprocessor took 72.14ms. Allocated memory is still 157.3MB. Free memory was 124.1MB in the beginning and 122.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-02-07 14:43:09,589 INFO L158 Benchmark]: RCFGBuilder took 638.90ms. Allocated memory is still 157.3MB. Free memory was 122.0MB in the beginning and 87.0MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2024-02-07 14:43:09,589 INFO L158 Benchmark]: TraceAbstraction took 2319.85ms. Allocated memory was 157.3MB in the beginning and 224.4MB in the end (delta: 67.1MB). Free memory was 86.4MB in the beginning and 145.5MB in the end (delta: -59.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. [2024-02-07 14:43:09,590 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.16ms. Allocated memory is still 157.3MB. Free memory is still 130.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.61ms. Allocated memory is still 157.3MB. Free memory was 84.0MB in the beginning and 126.2MB in the end (delta: -42.2MB). Peak memory consumption was 16.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.33ms. Allocated memory is still 157.3MB. Free memory was 126.2MB in the beginning and 124.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 72.14ms. Allocated memory is still 157.3MB. Free memory was 124.1MB in the beginning and 122.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 638.90ms. Allocated memory is still 157.3MB. Free memory was 122.0MB in the beginning and 87.0MB in the end (delta: 35.1MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2319.85ms. Allocated memory was 157.3MB in the beginning and 224.4MB in the end (delta: 67.1MB). Free memory was 86.4MB in the beginning and 145.5MB in the end (delta: -59.1MB). Peak memory consumption was 9.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 59]: invariant of correctness witness can be violated invariant of correctness witness can be violated We found a FailurePath: [L38] 0 _Bool e1, e2; [L39] 0 int n1, n2, tmp1, tmp2, i, i1, i2; [L107] 0 pthread_t t1, t2; [L110] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [e1=0, e2=0, i=0, i=0, i=0, n1=0, n2=0, t1={5:0}, t2={3:0}, tmp1=0, tmp2=0] [L44] 1 e1 = 1 [L45] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[e1],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]] VAL [_argptr={0:0}, _argptr={0:0}, e1=1, e2=0, i=0, i=0, i=0, n1=0, n2=0, tmp1=0, tmp2=0] [L47] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[n2]]]] [L47] 1 tmp1 = n2 [L48] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[tmp1]]]] VAL [_argptr={0:0}, _argptr={0:0}, e1=1, e2=0, i=0, i=0, i=0, n1=0, n2=0, tmp1=0, tmp2=0] [L50] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[tmp1]]]] [L50] 1 n1 = tmp1 + 1 [L51] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[n1]]]] VAL [_argptr={0:0}, _argptr={0:0}, e1=1, e2=0, i=0, i=0, i=0, n1=1, n2=0, tmp1=0, tmp2=0] [L53] 1 e1 = 0 [L54] 1 CodeAnnotStmt[Assertion[BinaryExpression[COMPEQ,IdentifierExpression[e1],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]]]] VAL [_argptr={0:0}, _argptr={0:0}, e1=0, e2=0, i=0, i=0, i=0, n1=1, n2=0, tmp1=0, tmp2=0] [L56] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICOR,BinaryExpression[COMPEQ,IdentifierExpression[e2],CastExpression[ACSLType[_Bool],IntegerLiteral[0]]],BinaryExpression[COMPEQ,IdentifierExpression[e2],CastExpression[ACSLType[_Bool],IntegerLiteral[1]]]]]] [L56] CALL 1 assume_abort_if_not(!e2) [L35] COND FALSE 1 !(!cond) [L56] RET 1 assume_abort_if_not(!e2) [L59] 1 CodeAnnotStmt[Assertion[BinaryExpression[LOGICAND,BinaryExpression[LOGICAND,BinaryExpression[COMPLEQ,IntegerLiteral[0],IdentifierExpression[n1]],BinaryExpression[COMPLEQ,IntegerLiteral[1],IdentifierExpression[n2]]],BinaryExpression[COMPNEQ,IdentifierExpression[n2],IntegerLiteral[0]]]]] VAL [_argptr={0:0}, _argptr={0:0}, e1=0, e2=0, i=0, i=0, i=0, n1=1, n2=0, tmp1=0, tmp2=0] - UnprovableResult [Line: 45]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 47]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 48]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 50]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 51]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 54]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 56]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 62]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 63]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 65]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 66]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 69]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 77]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 79]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 80]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 82]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 83]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 86]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 88]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 91]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 94]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 95]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 97]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 98]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 101]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 115]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 116]: 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: 111]: 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: 110]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 56 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 346 IncrementalHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 0 mSDtfsCounter, 346 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 0.3s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 74 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 14:43:09,621 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