./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/popl20-three-array-min.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f 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/popl20-three-array-min.wvr.c ./goblint.2024-05-21_14-57-05.files/protection/popl20-three-array-min.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 --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 19:02:02,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 19:02:02,572 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 19:02:02,579 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 19:02:02,580 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 19:02:02,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 19:02:02,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 19:02:02,604 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 19:02:02,604 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 19:02:02,607 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 19:02:02,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 19:02:02,608 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 19:02:02,608 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 19:02:02,609 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 19:02:02,609 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 19:02:02,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 19:02:02,610 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 19:02:02,610 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 19:02:02,610 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 19:02:02,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 19:02:02,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 19:02:02,611 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 19:02:02,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 19:02:02,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 19:02:02,612 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 19:02:02,612 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 19:02:02,612 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 19:02:02,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 19:02:02,613 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 19:02:02,613 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 19:02:02,614 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 19:02:02,614 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 19:02:02,614 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:02:02,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 19:02:02,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 19:02:02,615 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 19:02:02,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 19:02:02,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 19:02:02,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 19:02:02,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 19:02:02,615 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 19:02:02,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 19:02:02,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 19:02:02,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 19:02:02,871 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 19:02:02,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 19:02:02,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 19:02:02,893 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 19:02:02,894 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 19:02:02,895 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/popl20-three-array-min.wvr.yml/witness.yml [2024-06-03 19:02:02,947 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 19:02:02,948 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 19:02:02,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2024-06-03 19:02:03,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 19:02:04,147 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 19:02:04,148 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2024-06-03 19:02:04,155 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0a31874/eeeb85983a3545f0b01e63d4f43533f5/FLAGe1b642016 [2024-06-03 19:02:04,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0a31874/eeeb85983a3545f0b01e63d4f43533f5 [2024-06-03 19:02:04,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 19:02:04,172 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 19:02:04,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 19:02:04,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 19:02:04,177 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 19:02:04,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:02:02" (1/2) ... [2024-06-03 19:02:04,179 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b8f466 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:02:04, skipping insertion in model container [2024-06-03 19:02:04,179 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:02:02" (1/2) ... [2024-06-03 19:02:04,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9dc105d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 07:02:04, skipping insertion in model container [2024-06-03 19:02:04,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:02:04" (2/2) ... [2024-06-03 19:02:04,182 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28b8f466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04, skipping insertion in model container [2024-06-03 19:02:04,183 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 07:02:04" (2/2) ... [2024-06-03 19:02:04,183 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 19:02:04,198 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 19:02:04,199 INFO L97 edCorrectnessWitness]: Location invariant before [L108-L108] ! multithreaded || 1 <= p [2024-06-03 19:02:04,199 INFO L97 edCorrectnessWitness]: Location invariant before [L107-L107] ! multithreaded || 1 <= p [2024-06-03 19:02:04,199 INFO L97 edCorrectnessWitness]: Location invariant before [L109-L109] ! multithreaded || 1 <= p [2024-06-03 19:02:04,199 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 19:02:04,199 INFO L106 edCorrectnessWitness]: ghost_update [L106-L106] multithreaded = 1; [2024-06-03 19:02:04,219 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 19:02:04,402 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:02:04,410 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 19:02:04,478 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 19:02:04,495 INFO L206 MainTranslator]: Completed translation [2024-06-03 19:02:04,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04 WrapperNode [2024-06-03 19:02:04,496 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 19:02:04,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 19:02:04,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 19:02:04,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 19:02:04,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,511 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,531 INFO L138 Inliner]: procedures = 25, calls = 43, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 229 [2024-06-03 19:02:04,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 19:02:04,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 19:02:04,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 19:02:04,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 19:02:04,541 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,557 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-06-03 19:02:04,557 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,564 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,568 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,570 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,574 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 19:02:04,576 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 19:02:04,576 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 19:02:04,576 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 19:02:04,577 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (1/1) ... [2024-06-03 19:02:04,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 19:02:04,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:02:04,601 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) [2024-06-03 19:02:04,606 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 [2024-06-03 19:02:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 19:02:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-03 19:02:04,628 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-03 19:02:04,628 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-03 19:02:04,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-03 19:02:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-03 19:02:04,629 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-03 19:02:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 19:02:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-03 19:02:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-03 19:02:04,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-03 19:02:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 19:02:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 19:02:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-03 19:02:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 19:02:04,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 19:02:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-03 19:02:04,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-03 19:02:04,649 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 19:02:04,760 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 19:02:04,762 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 19:02:05,191 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 19:02:05,192 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 19:02:05,443 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 19:02:05,444 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-03 19:02:05,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:02:05 BoogieIcfgContainer [2024-06-03 19:02:05,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 19:02:05,446 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 19:02:05,446 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 19:02:05,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 19:02:05,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 07:02:02" (1/4) ... [2024-06-03 19:02:05,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9eb0141 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 07:02:05, skipping insertion in model container [2024-06-03 19:02:05,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 07:02:04" (2/4) ... [2024-06-03 19:02:05,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9eb0141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:02:05, skipping insertion in model container [2024-06-03 19:02:05,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 07:02:04" (3/4) ... [2024-06-03 19:02:05,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9eb0141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 07:02:05, skipping insertion in model container [2024-06-03 19:02:05,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 07:02:05" (4/4) ... [2024-06-03 19:02:05,451 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2024-06-03 19:02:05,465 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 19:02:05,465 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-03 19:02:05,465 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 19:02:05,497 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-03 19:02:05,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 45 transitions, 111 flow [2024-06-03 19:02:05,556 INFO L124 PetriNetUnfolderBase]: 7/42 cut-off events. [2024-06-03 19:02:05,556 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 19:02:05,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 42 events. 7/42 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-03 19:02:05,559 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 45 transitions, 111 flow [2024-06-03 19:02:05,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 95 flow [2024-06-03 19:02:05,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 19:02:05,581 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;@721808d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 19:02:05,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-03 19:02:05,586 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 19:02:05,587 INFO L124 PetriNetUnfolderBase]: 4/13 cut-off events. [2024-06-03 19:02:05,587 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 19:02:05,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:02:05,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:02:05,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:02:05,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:02:05,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1491970314, now seen corresponding path program 1 times [2024-06-03 19:02:05,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:02:05,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500046510] [2024-06-03 19:02:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:02:05,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:02:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:02:05,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:02:05,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:02:05,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500046510] [2024-06-03 19:02:05,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500046510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:02:05,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:02:05,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:02:05,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141996296] [2024-06-03 19:02:05,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:02:05,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:02:05,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:02:05,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:02:05,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:02:05,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 45 [2024-06-03 19:02:05,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:02:05,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:02:05,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 45 [2024-06-03 19:02:05,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:02:06,114 INFO L124 PetriNetUnfolderBase]: 712/1194 cut-off events. [2024-06-03 19:02:06,115 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2024-06-03 19:02:06,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2179 conditions, 1194 events. 712/1194 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5585 event pairs, 173 based on Foata normal form. 24/995 useless extension candidates. Maximal degree in co-relation 1931. Up to 668 conditions per place. [2024-06-03 19:02:06,126 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 39 selfloop transitions, 2 changer transitions 1/52 dead transitions. [2024-06-03 19:02:06,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 212 flow [2024-06-03 19:02:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:02:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:02:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2024-06-03 19:02:06,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-06-03 19:02:06,162 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 95 flow. Second operand 3 states and 84 transitions. [2024-06-03 19:02:06,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 212 flow [2024-06-03 19:02:06,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 52 transitions, 198 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-03 19:02:06,169 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 98 flow [2024-06-03 19:02:06,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2024-06-03 19:02:06,173 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-06-03 19:02:06,173 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 98 flow [2024-06-03 19:02:06,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:02:06,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:02:06,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:02:06,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 19:02:06,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:02:06,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:02:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1839279707, now seen corresponding path program 1 times [2024-06-03 19:02:06,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:02:06,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703861963] [2024-06-03 19:02:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:02:06,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:02:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:02:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 19:02:06,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:02:06,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703861963] [2024-06-03 19:02:06,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703861963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:02:06,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:02:06,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:02:06,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387590619] [2024-06-03 19:02:06,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:02:06,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:02:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:02:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:02:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:02:06,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-03 19:02:06,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:02:06,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:02:06,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-03 19:02:06,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:02:06,494 INFO L124 PetriNetUnfolderBase]: 1128/1838 cut-off events. [2024-06-03 19:02:06,495 INFO L125 PetriNetUnfolderBase]: For 219/219 co-relation queries the response was YES. [2024-06-03 19:02:06,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 1838 events. 1128/1838 cut-off events. For 219/219 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 9298 event pairs, 279 based on Foata normal form. 45/1539 useless extension candidates. Maximal degree in co-relation 941. Up to 905 conditions per place. [2024-06-03 19:02:06,505 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 61 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2024-06-03 19:02:06,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 75 transitions, 312 flow [2024-06-03 19:02:06,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 19:02:06,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 19:02:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-06-03 19:02:06,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2024-06-03 19:02:06,510 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 98 flow. Second operand 5 states and 130 transitions. [2024-06-03 19:02:06,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 75 transitions, 312 flow [2024-06-03 19:02:06,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:02:06,514 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 135 flow [2024-06-03 19:02:06,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2024-06-03 19:02:06,517 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 3 predicate places. [2024-06-03 19:02:06,517 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 135 flow [2024-06-03 19:02:06,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 19:02:06,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:02:06,521 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:02:06,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 19:02:06,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:02:06,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:02:06,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1823012112, now seen corresponding path program 1 times [2024-06-03 19:02:06,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:02:06,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660857829] [2024-06-03 19:02:06,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:02:06,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:02:06,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:02:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-03 19:02:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:02:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660857829] [2024-06-03 19:02:06,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660857829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:02:06,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:02:06,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-03 19:02:06,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712976271] [2024-06-03 19:02:06,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:02:06,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 19:02:06,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:02:06,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 19:02:06,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 19:02:06,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-06-03 19:02:06,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-03 19:02:06,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:02:06,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-06-03 19:02:06,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:02:06,818 INFO L124 PetriNetUnfolderBase]: 943/1632 cut-off events. [2024-06-03 19:02:06,818 INFO L125 PetriNetUnfolderBase]: For 738/781 co-relation queries the response was YES. [2024-06-03 19:02:06,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 1632 events. 943/1632 cut-off events. For 738/781 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8590 event pairs, 523 based on Foata normal form. 31/1349 useless extension candidates. Maximal degree in co-relation 1102. Up to 1216 conditions per place. [2024-06-03 19:02:06,827 INFO L140 encePairwiseOnDemand]: 42/45 looper letters, 30 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-06-03 19:02:06,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 201 flow [2024-06-03 19:02:06,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 19:02:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 19:02:06,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-03 19:02:06,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2024-06-03 19:02:06,828 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 135 flow. Second operand 3 states and 77 transitions. [2024-06-03 19:02:06,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 201 flow [2024-06-03 19:02:06,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 194 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-03 19:02:06,831 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 140 flow [2024-06-03 19:02:06,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2024-06-03 19:02:06,832 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-03 19:02:06,832 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 140 flow [2024-06-03 19:02:06,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2024-06-03 19:02:06,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:02:06,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:02:06,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 19:02:06,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:02:06,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:02:06,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1349645646, now seen corresponding path program 1 times [2024-06-03 19:02:06,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:02:06,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918809304] [2024-06-03 19:02:06,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:02:06,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:02:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:02:06,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-03 19:02:06,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:02:06,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918809304] [2024-06-03 19:02:06,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918809304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 19:02:06,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 19:02:06,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 19:02:06,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826488376] [2024-06-03 19:02:06,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 19:02:06,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-03 19:02:06,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:02:06,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-03 19:02:06,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-03 19:02:06,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-06-03 19:02:06,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-06-03 19:02:06,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:02:06,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-06-03 19:02:06,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:02:07,057 INFO L124 PetriNetUnfolderBase]: 943/1628 cut-off events. [2024-06-03 19:02:07,058 INFO L125 PetriNetUnfolderBase]: For 538/578 co-relation queries the response was YES. [2024-06-03 19:02:07,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 1628 events. 943/1628 cut-off events. For 538/578 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 8493 event pairs, 523 based on Foata normal form. 29/1340 useless extension candidates. Maximal degree in co-relation 3454. Up to 1215 conditions per place. [2024-06-03 19:02:07,066 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 28 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2024-06-03 19:02:07,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 212 flow [2024-06-03 19:02:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 19:02:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 19:02:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-03 19:02:07,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-03 19:02:07,067 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 140 flow. Second operand 4 states and 96 transitions. [2024-06-03 19:02:07,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 212 flow [2024-06-03 19:02:07,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 208 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-03 19:02:07,070 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 164 flow [2024-06-03 19:02:07,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2024-06-03 19:02:07,071 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 7 predicate places. [2024-06-03 19:02:07,071 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 164 flow [2024-06-03 19:02:07,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2024-06-03 19:02:07,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:02:07,071 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:02:07,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 19:02:07,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:02:07,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:02:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash 2010848145, now seen corresponding path program 1 times [2024-06-03 19:02:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:02:07,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703262092] [2024-06-03 19:02:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:02:07,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:02:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:02:07,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-03 19:02:07,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:02:07,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703262092] [2024-06-03 19:02:07,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703262092] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 19:02:07,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103201215] [2024-06-03 19:02:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:02:07,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 19:02:07,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:02:07,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 19:02:07,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-03 19:02:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:02:07,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2024-06-03 19:02:07,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 19:02:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-03 19:02:07,352 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 19:02:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-06-03 19:02:07,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103201215] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-03 19:02:07,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-03 19:02:07,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-06-03 19:02:07,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122444646] [2024-06-03 19:02:07,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-03 19:02:07,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-03 19:02:07,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:02:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-03 19:02:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2024-06-03 19:02:07,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 45 [2024-06-03 19:02:07,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 164 flow. Second operand has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 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) [2024-06-03 19:02:07,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:02:07,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 45 [2024-06-03 19:02:07,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:02:07,802 INFO L124 PetriNetUnfolderBase]: 1686/2811 cut-off events. [2024-06-03 19:02:07,803 INFO L125 PetriNetUnfolderBase]: For 507/540 co-relation queries the response was YES. [2024-06-03 19:02:07,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5829 conditions, 2811 events. 1686/2811 cut-off events. For 507/540 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 15229 event pairs, 888 based on Foata normal form. 37/2328 useless extension candidates. Maximal degree in co-relation 4789. Up to 1794 conditions per place. [2024-06-03 19:02:07,818 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 30 selfloop transitions, 9 changer transitions 42/91 dead transitions. [2024-06-03 19:02:07,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 91 transitions, 472 flow [2024-06-03 19:02:07,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 19:02:07,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 19:02:07,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 204 transitions. [2024-06-03 19:02:07,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-06-03 19:02:07,820 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 164 flow. Second operand 9 states and 204 transitions. [2024-06-03 19:02:07,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 91 transitions, 472 flow [2024-06-03 19:02:07,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 91 transitions, 471 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 19:02:07,823 INFO L231 Difference]: Finished difference. Result has 62 places, 49 transitions, 221 flow [2024-06-03 19:02:07,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=221, PETRI_PLACES=62, PETRI_TRANSITIONS=49} [2024-06-03 19:02:07,823 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2024-06-03 19:02:07,823 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 49 transitions, 221 flow [2024-06-03 19:02:07,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.416666666666668) internal successors, (197), 12 states have internal predecessors, (197), 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) [2024-06-03 19:02:07,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 19:02:07,824 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 19:02:07,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-06-03 19:02:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 19:02:08,034 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-03 19:02:08,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 19:02:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2064407544, now seen corresponding path program 2 times [2024-06-03 19:02:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 19:02:08,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791426940] [2024-06-03 19:02:08,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 19:02:08,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 19:02:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 19:02:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-06-03 19:02:08,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 19:02:08,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791426940] [2024-06-03 19:02:08,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791426940] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-03 19:02:08,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091753332] [2024-06-03 19:02:08,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-03 19:02:08,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-03 19:02:08,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 19:02:08,125 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-03 19:02:08,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-03 19:02:08,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-03 19:02:08,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-03 19:02:08,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 9 conjunts are in the unsatisfiable core [2024-06-03 19:02:08,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-03 19:02:08,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-03 19:02:08,329 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-03 19:02:08,409 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-03 19:02:08,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091753332] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-03 19:02:08,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-03 19:02:08,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 16 [2024-06-03 19:02:08,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936897229] [2024-06-03 19:02:08,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-03 19:02:08,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-06-03 19:02:08,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 19:02:08,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-06-03 19:02:08,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2024-06-03 19:02:08,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 45 [2024-06-03 19:02:08,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 49 transitions, 221 flow. Second operand has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 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) [2024-06-03 19:02:08,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 19:02:08,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 45 [2024-06-03 19:02:08,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 19:02:08,976 INFO L124 PetriNetUnfolderBase]: 1951/3058 cut-off events. [2024-06-03 19:02:08,976 INFO L125 PetriNetUnfolderBase]: For 972/972 co-relation queries the response was YES. [2024-06-03 19:02:08,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6916 conditions, 3058 events. 1951/3058 cut-off events. For 972/972 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16389 event pairs, 280 based on Foata normal form. 97/2611 useless extension candidates. Maximal degree in co-relation 4186. Up to 460 conditions per place. [2024-06-03 19:02:08,989 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 0 selfloop transitions, 0 changer transitions 152/152 dead transitions. [2024-06-03 19:02:08,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 152 transitions, 866 flow [2024-06-03 19:02:08,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-03 19:02:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-03 19:02:08,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 314 transitions. [2024-06-03 19:02:08,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651851851851852 [2024-06-03 19:02:08,991 INFO L175 Difference]: Start difference. First operand has 62 places, 49 transitions, 221 flow. Second operand 15 states and 314 transitions. [2024-06-03 19:02:08,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 152 transitions, 866 flow [2024-06-03 19:02:08,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 152 transitions, 796 flow, removed 29 selfloop flow, removed 5 redundant places. [2024-06-03 19:02:08,998 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2024-06-03 19:02:08,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2024-06-03 19:02:09,000 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-06-03 19:02:09,000 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2024-06-03 19:02:09,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 14.25) internal successors, (228), 16 states have internal predecessors, (228), 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) [2024-06-03 19:02:09,002 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-03 19:02:09,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-03 19:02:09,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-03 19:02:09,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-03 19:02:09,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-03 19:02:09,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-03 19:02:09,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-06-03 19:02:09,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-06-03 19:02:09,214 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2024-06-03 19:02:09,217 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 19:02:09,217 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 19:02:09,222 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-03 19:02:09,222 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-03 19:02:09,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 07:02:09 BasicIcfg [2024-06-03 19:02:09,233 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 19:02:09,233 INFO L158 Benchmark]: Toolchain (without parser) took 5061.57ms. Allocated memory was 159.4MB in the beginning and 369.1MB in the end (delta: 209.7MB). Free memory was 127.4MB in the beginning and 173.0MB in the end (delta: -45.6MB). Peak memory consumption was 166.5MB. Max. memory is 16.1GB. [2024-06-03 19:02:09,233 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:02:09,234 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 19:02:09,234 INFO L158 Benchmark]: CACSL2BoogieTranslator took 322.66ms. Allocated memory is still 159.4MB. Free memory was 127.4MB in the beginning and 111.4MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-06-03 19:02:09,234 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.98ms. Allocated memory is still 159.4MB. Free memory was 111.4MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:02:09,234 INFO L158 Benchmark]: Boogie Preprocessor took 41.24ms. Allocated memory is still 159.4MB. Free memory was 109.4MB in the beginning and 106.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 19:02:09,235 INFO L158 Benchmark]: RCFGBuilder took 868.18ms. Allocated memory was 159.4MB in the beginning and 264.2MB in the end (delta: 104.9MB). Free memory was 105.8MB in the beginning and 202.0MB in the end (delta: -96.2MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. [2024-06-03 19:02:09,235 INFO L158 Benchmark]: TraceAbstraction took 3787.11ms. Allocated memory was 264.2MB in the beginning and 369.1MB in the end (delta: 104.9MB). Free memory was 200.9MB in the beginning and 173.0MB in the end (delta: 27.9MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. [2024-06-03 19:02:09,236 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 0.16ms. Allocated memory is still 159.4MB. Free memory is still 131.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.12ms. Allocated memory is still 159.4MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 322.66ms. Allocated memory is still 159.4MB. Free memory was 127.4MB in the beginning and 111.4MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.98ms. Allocated memory is still 159.4MB. Free memory was 111.4MB in the beginning and 109.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.24ms. Allocated memory is still 159.4MB. Free memory was 109.4MB in the beginning and 106.4MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 868.18ms. Allocated memory was 159.4MB in the beginning and 264.2MB in the end (delta: 104.9MB). Free memory was 105.8MB in the beginning and 202.0MB in the end (delta: -96.2MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. * TraceAbstraction took 3787.11ms. Allocated memory was 264.2MB in the beginning and 369.1MB in the end (delta: 104.9MB). Free memory was 200.9MB in the beginning and 173.0MB in the end (delta: 27.9MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 107]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 108]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 109]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 58 locations, 6 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: 3.7s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 405 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 368 mSDsluCounter, 261 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 235 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1190 IncrementalHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 26 mSDtfsCounter, 1190 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 119 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred in iteration=5, InterpolantAutomatonStates: 39, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 151 NumberOfCodeBlocks, 151 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 485 SizeOfPredicates, 6 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 42/53 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-03 19:02:09,259 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 Result: TRUE