./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.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/mutex-meet/popl20-three-array-sum.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-sum.wvr.c ./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-three-array-sum.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 [2024-06-04 16:28:44,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 16:28:44,240 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 16:28:44,245 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 16:28:44,245 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 16:28:44,276 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 16:28:44,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 16:28:44,277 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 16:28:44,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 16:28:44,281 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 16:28:44,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 16:28:44,282 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 16:28:44,283 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 16:28:44,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 16:28:44,284 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 16:28:44,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 16:28:44,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 16:28:44,285 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 16:28:44,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 16:28:44,286 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 16:28:44,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 16:28:44,286 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 16:28:44,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 16:28:44,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 16:28:44,287 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 16:28:44,287 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 16:28:44,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 16:28:44,288 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 16:28:44,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 16:28:44,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 16:28:44,290 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 16:28:44,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 16:28:44,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:28:44,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 16:28:44,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 16:28:44,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 16:28:44,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 16:28:44,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 16:28:44,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 16:28:44,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 16:28:44,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 16:28:44,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 16:28:44,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 16:28:44,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 16:28:44,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 16:28:44,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 16:28:44,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 16:28:44,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 16:28:44,561 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 16:28:44,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2024-06-04 16:28:45,706 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 16:28:45,901 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 16:28:45,902 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-sum.wvr.c [2024-06-04 16:28:45,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64f1e182f/a1ee9a60105a4dfd857bce484e326c24/FLAG0bbb5bf49 [2024-06-04 16:28:45,919 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64f1e182f/a1ee9a60105a4dfd857bce484e326c24 [2024-06-04 16:28:45,920 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 16:28:45,921 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 16:28:45,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/mutex-meet/popl20-three-array-sum.wvr.yml/witness.yml [2024-06-04 16:28:46,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 16:28:46,033 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 16:28:46,034 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 16:28:46,034 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 16:28:46,039 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 16:28:46,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:28:45" (1/2) ... [2024-06-04 16:28:46,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da7ef4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:46, skipping insertion in model container [2024-06-04 16:28:46,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 04:28:45" (1/2) ... [2024-06-04 16:28:46,043 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@72900a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 04:28:46, skipping insertion in model container [2024-06-04 16:28:46,043 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:46" (2/2) ... [2024-06-04 16:28:46,044 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da7ef4c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46, skipping insertion in model container [2024-06-04 16:28:46,044 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:46" (2/2) ... [2024-06-04 16:28:46,045 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 16:28:46,069 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 16:28:46,070 INFO L97 edCorrectnessWitness]: Location invariant before [L97-L97] ((! multithreaded || ((4294967295LL + (long long )N) - (long long )p >= 0LL && (4294967294LL - (long long )N) - (long long )p >= 0LL)) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= p) [2024-06-04 16:28:46,070 INFO L97 edCorrectnessWitness]: Location invariant before [L95-L95] ((! multithreaded || ((4294967295LL + (long long )N) - (long long )p >= 0LL && (4294967294LL - (long long )N) - (long long )p >= 0LL)) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= p) [2024-06-04 16:28:46,071 INFO L97 edCorrectnessWitness]: Location invariant before [L96-L96] ((! multithreaded || ((4294967295LL + (long long )N) - (long long )p >= 0LL && (4294967294LL - (long long )N) - (long long )p >= 0LL)) && (! multithreaded || 0 <= p)) && (! multithreaded || 0 <= p) [2024-06-04 16:28:46,071 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 16:28:46,071 INFO L106 edCorrectnessWitness]: ghost_update [L94-L94] multithreaded = 1; [2024-06-04 16:28:46,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 16:28:46,315 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:28:46,331 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 16:28:46,387 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 16:28:46,408 INFO L206 MainTranslator]: Completed translation [2024-06-04 16:28:46,408 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46 WrapperNode [2024-06-04 16:28:46,409 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 16:28:46,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 16:28:46,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 16:28:46,410 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 16:28:46,417 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,471 INFO L138 Inliner]: procedures = 25, calls = 30, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 146 [2024-06-04 16:28:46,473 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 16:28:46,474 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 16:28:46,474 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 16:28:46,474 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 16:28:46,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,527 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 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]. [2024-06-04 16:28:46,535 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,536 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 16:28:46,572 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 16:28:46,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 16:28:46,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 16:28:46,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (1/1) ... [2024-06-04 16:28:46,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 16:28:46,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:46,605 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) [2024-06-04 16:28:46,612 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 [2024-06-04 16:28:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 16:28:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-06-04 16:28:46,641 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-06-04 16:28:46,641 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-06-04 16:28:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-06-04 16:28:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-06-04 16:28:46,642 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-06-04 16:28:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 16:28:46,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-04 16:28:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-04 16:28:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-04 16:28:46,643 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 16:28:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 16:28:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-06-04 16:28:46,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 16:28:46,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 16:28:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-04 16:28:46,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-04 16:28:46,648 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 16:28:46,779 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 16:28:46,782 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 16:28:47,156 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 16:28:47,156 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 16:28:47,345 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 16:28:47,346 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-06-04 16:28:47,346 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:28:47 BoogieIcfgContainer [2024-06-04 16:28:47,346 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 16:28:47,348 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 16:28:47,348 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 16:28:47,351 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 16:28:47,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 04:28:45" (1/4) ... [2024-06-04 16:28:47,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f04bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 04:28:47, skipping insertion in model container [2024-06-04 16:28:47,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 04:28:46" (2/4) ... [2024-06-04 16:28:47,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f04bcf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:28:47, skipping insertion in model container [2024-06-04 16:28:47,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 04:28:46" (3/4) ... [2024-06-04 16:28:47,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f04bcf and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 04:28:47, skipping insertion in model container [2024-06-04 16:28:47,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 04:28:47" (4/4) ... [2024-06-04 16:28:47,354 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-sum.wvr.c [2024-06-04 16:28:47,370 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 16:28:47,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-04 16:28:47,371 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 16:28:47,428 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-06-04 16:28:47,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 45 transitions, 111 flow [2024-06-04 16:28:47,499 INFO L124 PetriNetUnfolderBase]: 7/42 cut-off events. [2024-06-04 16:28:47,500 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-04 16:28:47,505 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. [2024-06-04 16:28:47,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 45 transitions, 111 flow [2024-06-04 16:28:47,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 40 transitions, 95 flow [2024-06-04 16:28:47,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 16:28:47,536 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;@51981e8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 16:28:47,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-04 16:28:47,542 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 16:28:47,542 INFO L124 PetriNetUnfolderBase]: 4/13 cut-off events. [2024-06-04 16:28:47,543 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 16:28:47,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:47,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:47,544 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)] === [2024-06-04 16:28:47,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:47,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1043378479, now seen corresponding path program 1 times [2024-06-04 16:28:47,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:47,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354448065] [2024-06-04 16:28:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:47,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:48,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:48,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354448065] [2024-06-04 16:28:48,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354448065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:48,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 16:28:48,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17272036] [2024-06-04 16:28:48,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:48,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 16:28:48,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:48,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 16:28:48,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 16:28:48,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-04 16:28:48,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-06-04 16:28:48,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:48,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-04 16:28:48,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:48,423 INFO L124 PetriNetUnfolderBase]: 753/1197 cut-off events. [2024-06-04 16:28:48,424 INFO L125 PetriNetUnfolderBase]: For 117/117 co-relation queries the response was YES. [2024-06-04 16:28:48,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2343 conditions, 1197 events. 753/1197 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5104 event pairs, 237 based on Foata normal form. 45/1101 useless extension candidates. Maximal degree in co-relation 2064. Up to 669 conditions per place. [2024-06-04 16:28:48,438 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 44 selfloop transitions, 2 changer transitions 1/54 dead transitions. [2024-06-04 16:28:48,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 54 transitions, 226 flow [2024-06-04 16:28:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 16:28:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 16:28:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-04 16:28:48,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2024-06-04 16:28:48,454 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 95 flow. Second operand 3 states and 80 transitions. [2024-06-04 16:28:48,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 54 transitions, 226 flow [2024-06-04 16:28:48,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 54 transitions, 212 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-04 16:28:48,462 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 98 flow [2024-06-04 16:28:48,463 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} [2024-06-04 16:28:48,466 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2024-06-04 16:28:48,466 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 98 flow [2024-06-04 16:28:48,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2024-06-04 16:28:48,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:48,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:48,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 16:28:48,468 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)] === [2024-06-04 16:28:48,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash 81781046, now seen corresponding path program 1 times [2024-06-04 16:28:48,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:48,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907628234] [2024-06-04 16:28:48,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:48,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 16:28:48,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:48,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907628234] [2024-06-04 16:28:48,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907628234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 16:28:48,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 16:28:48,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 16:28:48,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088732787] [2024-06-04 16:28:48,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:48,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 16:28:48,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:48,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 16:28:48,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-04 16:28:48,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-04 16:28:48,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:48,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:48,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-04 16:28:48,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:49,019 INFO L124 PetriNetUnfolderBase]: 1131/1824 cut-off events. [2024-06-04 16:28:49,020 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-06-04 16:28:49,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3653 conditions, 1824 events. 1131/1824 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 8331 event pairs, 716 based on Foata normal form. 0/1491 useless extension candidates. Maximal degree in co-relation 2065. Up to 1188 conditions per place. [2024-06-04 16:28:49,030 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 29 selfloop transitions, 6 changer transitions 40/83 dead transitions. [2024-06-04 16:28:49,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 83 transitions, 343 flow [2024-06-04 16:28:49,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 16:28:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 16:28:49,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-06-04 16:28:49,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-06-04 16:28:49,036 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 98 flow. Second operand 6 states and 147 transitions. [2024-06-04 16:28:49,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 83 transitions, 343 flow [2024-06-04 16:28:49,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 83 transitions, 341 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:28:49,040 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 136 flow [2024-06-04 16:28:49,040 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2024-06-04 16:28:49,041 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2024-06-04 16:28:49,041 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 136 flow [2024-06-04 16:28:49,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 16:28:49,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:49,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:49,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 16:28:49,042 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)] === [2024-06-04 16:28:49,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:49,043 INFO L85 PathProgramCache]: Analyzing trace with hash 446686048, now seen corresponding path program 1 times [2024-06-04 16:28:49,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:49,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63150233] [2024-06-04 16:28:49,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:49,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:49,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 16:28:49,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:49,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63150233] [2024-06-04 16:28:49,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63150233] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:28:49,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811538369] [2024-06-04 16:28:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:49,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:49,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:49,249 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) [2024-06-04 16:28:49,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-06-04 16:28:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:49,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 10 conjunts are in the unsatisfiable core [2024-06-04 16:28:49,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:28:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 16:28:49,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 16:28:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 16:28:49,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811538369] provided 1 perfect and 1 imperfect interpolant sequences [2024-06-04 16:28:49,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-06-04 16:28:49,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 13 [2024-06-04 16:28:49,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691607473] [2024-06-04 16:28:49,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 16:28:49,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 16:28:49,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 16:28:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-06-04 16:28:49,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 45 [2024-06-04 16:28:49,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 136 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-06-04 16:28:49,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:49,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 45 [2024-06-04 16:28:49,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:50,000 INFO L124 PetriNetUnfolderBase]: 1066/1683 cut-off events. [2024-06-04 16:28:50,001 INFO L125 PetriNetUnfolderBase]: For 351/415 co-relation queries the response was YES. [2024-06-04 16:28:50,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3722 conditions, 1683 events. 1066/1683 cut-off events. For 351/415 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7546 event pairs, 296 based on Foata normal form. 54/1559 useless extension candidates. Maximal degree in co-relation 3686. Up to 668 conditions per place. [2024-06-04 16:28:50,014 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 60 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2024-06-04 16:28:50,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 337 flow [2024-06-04 16:28:50,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 16:28:50,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 16:28:50,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 116 transitions. [2024-06-04 16:28:50,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5155555555555555 [2024-06-04 16:28:50,019 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 136 flow. Second operand 5 states and 116 transitions. [2024-06-04 16:28:50,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 337 flow [2024-06-04 16:28:50,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 72 transitions, 319 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-04 16:28:50,027 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 162 flow [2024-06-04 16:28:50,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2024-06-04 16:28:50,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 4 predicate places. [2024-06-04 16:28:50,028 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 162 flow [2024-06-04 16:28:50,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2024-06-04 16:28:50,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:50,029 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:50,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-06-04 16:28:50,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:50,244 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)] === [2024-06-04 16:28:50,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1416900259, now seen corresponding path program 1 times [2024-06-04 16:28:50,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:50,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722739170] [2024-06-04 16:28:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:50,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 16:28:50,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722739170] [2024-06-04 16:28:50,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722739170] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:28:50,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544218172] [2024-06-04 16:28:50,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:50,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:50,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:50,388 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) [2024-06-04 16:28:50,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-06-04 16:28:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:50,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjunts are in the unsatisfiable core [2024-06-04 16:28:50,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:28:50,570 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 16:28:50,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 16:28:50,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-06-04 16:28:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544218172] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 16:28:50,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 16:28:50,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-06-04 16:28:50,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561526469] [2024-06-04 16:28:50,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 16:28:50,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-04 16:28:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-04 16:28:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-06-04 16:28:50,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-04 16:28:50,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 162 flow. Second operand has 14 states, 14 states have (on average 14.5) internal successors, (203), 14 states have internal predecessors, (203), 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) [2024-06-04 16:28:50,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:50,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-04 16:28:50,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:51,338 INFO L124 PetriNetUnfolderBase]: 1964/3101 cut-off events. [2024-06-04 16:28:51,339 INFO L125 PetriNetUnfolderBase]: For 1088/1127 co-relation queries the response was YES. [2024-06-04 16:28:51,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7170 conditions, 3101 events. 1964/3101 cut-off events. For 1088/1127 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 15352 event pairs, 1161 based on Foata normal form. 44/2788 useless extension candidates. Maximal degree in co-relation 4678. Up to 1748 conditions per place. [2024-06-04 16:28:51,354 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 32 selfloop transitions, 9 changer transitions 62/111 dead transitions. [2024-06-04 16:28:51,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 111 transitions, 558 flow [2024-06-04 16:28:51,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-04 16:28:51,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-04 16:28:51,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 220 transitions. [2024-06-04 16:28:51,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-04 16:28:51,357 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 162 flow. Second operand 10 states and 220 transitions. [2024-06-04 16:28:51,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 111 transitions, 558 flow [2024-06-04 16:28:51,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 111 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 16:28:51,361 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 223 flow [2024-06-04 16:28:51,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=46, 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=10, PETRI_FLOW=223, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-04 16:28:51,362 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2024-06-04 16:28:51,362 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 223 flow [2024-06-04 16:28:51,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.5) internal successors, (203), 14 states have internal predecessors, (203), 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) [2024-06-04 16:28:51,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:51,363 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:51,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-06-04 16:28:51,575 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,SelfDestructingSolverStorable3 [2024-06-04 16:28:51,576 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)] === [2024-06-04 16:28:51,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:51,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1389827475, now seen corresponding path program 2 times [2024-06-04 16:28:51,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:51,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431392275] [2024-06-04 16:28:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:51,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-04 16:28:51,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431392275] [2024-06-04 16:28:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431392275] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:28:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009763754] [2024-06-04 16:28:51,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-06-04 16:28:51,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:51,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:51,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 16:28:51,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-06-04 16:28:51,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-06-04 16:28:51,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 16:28:51,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 13 conjunts are in the unsatisfiable core [2024-06-04 16:28:51,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:28:52,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-04 16:28:52,056 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 16:28:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-06-04 16:28:52,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009763754] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 16:28:52,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 16:28:52,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 20 [2024-06-04 16:28:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718984368] [2024-06-04 16:28:52,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 16:28:52,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-06-04 16:28:52,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-06-04 16:28:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-06-04 16:28:52,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-04 16:28:52,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 223 flow. Second operand has 22 states, 22 states have (on average 12.0) internal successors, (264), 22 states have internal predecessors, (264), 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) [2024-06-04 16:28:52,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:52,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-04 16:28:52,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:54,079 INFO L124 PetriNetUnfolderBase]: 3684/5453 cut-off events. [2024-06-04 16:28:54,080 INFO L125 PetriNetUnfolderBase]: For 3056/3056 co-relation queries the response was YES. [2024-06-04 16:28:54,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13974 conditions, 5453 events. 3684/5453 cut-off events. For 3056/3056 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 26532 event pairs, 478 based on Foata normal form. 518/5428 useless extension candidates. Maximal degree in co-relation 8676. Up to 960 conditions per place. [2024-06-04 16:28:54,109 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 132 selfloop transitions, 23 changer transitions 131/292 dead transitions. [2024-06-04 16:28:54,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 292 transitions, 1492 flow [2024-06-04 16:28:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-06-04 16:28:54,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-06-04 16:28:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 566 transitions. [2024-06-04 16:28:54,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4492063492063492 [2024-06-04 16:28:54,112 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 223 flow. Second operand 28 states and 566 transitions. [2024-06-04 16:28:54,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 292 transitions, 1492 flow [2024-06-04 16:28:54,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 292 transitions, 1407 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-04 16:28:54,127 INFO L231 Difference]: Finished difference. Result has 91 places, 58 transitions, 383 flow [2024-06-04 16:28:54,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=383, PETRI_PLACES=91, PETRI_TRANSITIONS=58} [2024-06-04 16:28:54,130 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 48 predicate places. [2024-06-04 16:28:54,130 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 58 transitions, 383 flow [2024-06-04 16:28:54,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.0) internal successors, (264), 22 states have internal predecessors, (264), 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) [2024-06-04 16:28:54,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:54,130 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:54,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-06-04 16:28:54,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:54,345 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)] === [2024-06-04 16:28:54,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1645705312, now seen corresponding path program 3 times [2024-06-04 16:28:54,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:54,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726149948] [2024-06-04 16:28:54,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:54,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-06-04 16:28:54,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:54,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726149948] [2024-06-04 16:28:54,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726149948] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:28:54,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688024652] [2024-06-04 16:28:54,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-06-04 16:28:54,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:54,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 16:28:54,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-06-04 16:28:54,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-06-04 16:28:54,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 16:28:54,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 13 conjunts are in the unsatisfiable core [2024-06-04 16:28:54,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:28:54,923 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-06-04 16:28:54,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 16:28:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-06-04 16:28:55,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688024652] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 16:28:55,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 16:28:55,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 12] total 28 [2024-06-04 16:28:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937238544] [2024-06-04 16:28:55,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 16:28:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-06-04 16:28:55,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:55,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-06-04 16:28:55,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2024-06-04 16:28:55,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 45 [2024-06-04 16:28:55,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 58 transitions, 383 flow. Second operand has 28 states, 28 states have (on average 14.642857142857142) internal successors, (410), 28 states have internal predecessors, (410), 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) [2024-06-04 16:28:55,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:55,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 45 [2024-06-04 16:28:55,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:28:56,765 INFO L124 PetriNetUnfolderBase]: 5027/7588 cut-off events. [2024-06-04 16:28:56,766 INFO L125 PetriNetUnfolderBase]: For 13455/13455 co-relation queries the response was YES. [2024-06-04 16:28:56,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23077 conditions, 7588 events. 5027/7588 cut-off events. For 13455/13455 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 40017 event pairs, 2150 based on Foata normal form. 88/6928 useless extension candidates. Maximal degree in co-relation 21487. Up to 3076 conditions per place. [2024-06-04 16:28:56,830 INFO L140 encePairwiseOnDemand]: 34/45 looper letters, 38 selfloop transitions, 18 changer transitions 208/272 dead transitions. [2024-06-04 16:28:56,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 272 transitions, 1778 flow [2024-06-04 16:28:56,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-06-04 16:28:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-06-04 16:28:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 580 transitions. [2024-06-04 16:28:56,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773662551440329 [2024-06-04 16:28:56,833 INFO L175 Difference]: Start difference. First operand has 91 places, 58 transitions, 383 flow. Second operand 27 states and 580 transitions. [2024-06-04 16:28:56,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 272 transitions, 1778 flow [2024-06-04 16:28:56,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 272 transitions, 1601 flow, removed 55 selfloop flow, removed 12 redundant places. [2024-06-04 16:28:56,911 INFO L231 Difference]: Finished difference. Result has 110 places, 64 transitions, 444 flow [2024-06-04 16:28:56,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=444, PETRI_PLACES=110, PETRI_TRANSITIONS=64} [2024-06-04 16:28:56,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 67 predicate places. [2024-06-04 16:28:56,912 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 64 transitions, 444 flow [2024-06-04 16:28:56,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 14.642857142857142) internal successors, (410), 28 states have internal predecessors, (410), 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) [2024-06-04 16:28:56,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 16:28:56,913 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 16:28:56,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-06-04 16:28:57,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:57,118 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-04 16:28:57,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 16:28:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1275311328, now seen corresponding path program 4 times [2024-06-04 16:28:57,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 16:28:57,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740703094] [2024-06-04 16:28:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 16:28:57,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 16:28:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 16:28:57,687 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-06-04 16:28:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 16:28:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740703094] [2024-06-04 16:28:57,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740703094] provided 0 perfect and 1 imperfect interpolant sequences [2024-06-04 16:28:57,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404914904] [2024-06-04 16:28:57,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-06-04 16:28:57,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:28:57,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 16:28:57,694 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-06-04 16:28:57,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-06-04 16:28:58,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-06-04 16:28:58,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-06-04 16:28:58,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 15 conjunts are in the unsatisfiable core [2024-06-04 16:28:58,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-06-04 16:28:58,346 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-04 16:28:58,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-06-04 16:28:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-06-04 16:28:58,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404914904] provided 0 perfect and 2 imperfect interpolant sequences [2024-06-04 16:28:58,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-06-04 16:28:58,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 29 [2024-06-04 16:28:58,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447604938] [2024-06-04 16:28:58,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-06-04 16:28:58,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-06-04 16:28:58,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 16:28:58,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-06-04 16:28:58,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=764, Unknown=0, NotChecked=0, Total=930 [2024-06-04 16:28:59,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-06-04 16:28:59,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 64 transitions, 444 flow. Second operand has 31 states, 31 states have (on average 12.03225806451613) internal successors, (373), 31 states have internal predecessors, (373), 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) [2024-06-04 16:28:59,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 16:28:59,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-06-04 16:28:59,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 16:29:02,027 INFO L124 PetriNetUnfolderBase]: 4751/7058 cut-off events. [2024-06-04 16:29:02,027 INFO L125 PetriNetUnfolderBase]: For 20469/20469 co-relation queries the response was YES. [2024-06-04 16:29:02,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22035 conditions, 7058 events. 4751/7058 cut-off events. For 20469/20469 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 35527 event pairs, 382 based on Foata normal form. 420/6793 useless extension candidates. Maximal degree in co-relation 21506. Up to 1248 conditions per place. [2024-06-04 16:29:02,065 INFO L140 encePairwiseOnDemand]: 31/45 looper letters, 0 selfloop transitions, 0 changer transitions 437/437 dead transitions. [2024-06-04 16:29:02,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 437 transitions, 2495 flow [2024-06-04 16:29:02,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-06-04 16:29:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2024-06-04 16:29:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 827 transitions. [2024-06-04 16:29:02,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44823848238482383 [2024-06-04 16:29:02,071 INFO L175 Difference]: Start difference. First operand has 110 places, 64 transitions, 444 flow. Second operand 41 states and 827 transitions. [2024-06-04 16:29:02,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 437 transitions, 2495 flow [2024-06-04 16:29:02,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 437 transitions, 2203 flow, removed 121 selfloop flow, removed 22 redundant places. [2024-06-04 16:29:02,151 INFO L231 Difference]: Finished difference. Result has 106 places, 0 transitions, 0 flow [2024-06-04 16:29:02,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=0, PETRI_PLACES=106, PETRI_TRANSITIONS=0} [2024-06-04 16:29:02,153 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 63 predicate places. [2024-06-04 16:29:02,153 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 0 transitions, 0 flow [2024-06-04 16:29:02,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 12.03225806451613) internal successors, (373), 31 states have internal predecessors, (373), 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) [2024-06-04 16:29:02,158 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 6 remaining) [2024-06-04 16:29:02,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 6 remaining) [2024-06-04 16:29:02,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 6 remaining) [2024-06-04 16:29:02,159 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-06-04 16:29:02,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2024-06-04 16:29:02,160 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2024-06-04 16:29:02,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-06-04 16:29:02,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-06-04 16:29:02,376 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2024-06-04 16:29:02,378 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 16:29:02,378 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 16:29:02,382 INFO L507 ceAbstractionStarter]: Automizer considered 3 witness invariants [2024-06-04 16:29:02,382 INFO L508 ceAbstractionStarter]: WitnessConsidered=3 [2024-06-04 16:29:02,383 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 04:29:02 BasicIcfg [2024-06-04 16:29:02,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 16:29:02,384 INFO L158 Benchmark]: Toolchain (without parser) took 16351.24ms. Allocated memory was 163.6MB in the beginning and 723.5MB in the end (delta: 559.9MB). Free memory was 90.7MB in the beginning and 414.7MB in the end (delta: -324.0MB). Peak memory consumption was 292.4MB. Max. memory is 16.1GB. [2024-06-04 16:29:02,384 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:29:02,384 INFO L158 Benchmark]: Witness Parser took 2.63ms. Allocated memory is still 163.6MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 16:29:02,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 375.04ms. Allocated memory is still 163.6MB. Free memory was 90.5MB in the beginning and 126.6MB in the end (delta: -36.1MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-06-04 16:29:02,385 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.22ms. Allocated memory is still 163.6MB. Free memory was 126.6MB in the beginning and 124.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 16:29:02,385 INFO L158 Benchmark]: Boogie Preprocessor took 96.91ms. Allocated memory is still 163.6MB. Free memory was 124.8MB in the beginning and 121.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-04 16:29:02,386 INFO L158 Benchmark]: RCFGBuilder took 774.98ms. Allocated memory is still 163.6MB. Free memory was 121.8MB in the beginning and 125.7MB in the end (delta: -3.9MB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. [2024-06-04 16:29:02,386 INFO L158 Benchmark]: TraceAbstraction took 15035.21ms. Allocated memory was 163.6MB in the beginning and 723.5MB in the end (delta: 559.9MB). Free memory was 124.7MB in the beginning and 414.7MB in the end (delta: -290.0MB). Peak memory consumption was 324.4MB. Max. memory is 16.1GB. [2024-06-04 16:29:02,387 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 107.0MB. Free memory is still 70.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 2.63ms. Allocated memory is still 163.6MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 375.04ms. Allocated memory is still 163.6MB. Free memory was 90.5MB in the beginning and 126.6MB in the end (delta: -36.1MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.22ms. Allocated memory is still 163.6MB. Free memory was 126.6MB in the beginning and 124.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.91ms. Allocated memory is still 163.6MB. Free memory was 124.8MB in the beginning and 121.8MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 774.98ms. Allocated memory is still 163.6MB. Free memory was 121.8MB in the beginning and 125.7MB in the end (delta: -3.9MB). Peak memory consumption was 55.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15035.21ms. Allocated memory was 163.6MB in the beginning and 723.5MB in the end (delta: 559.9MB). Free memory was 124.7MB in the beginning and 414.7MB in the end (delta: -290.0MB). Peak memory consumption was 324.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 95]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 96]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 97]: 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: 14.9s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2902 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2838 mSDsluCounter, 312 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 308 mSDsCounter, 228 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6496 IncrementalHoareTripleChecker+Invalid, 6724 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 228 mSolverCounterUnsat, 4 mSDtfsCounter, 6496 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 410 GetRequests, 223 SyntacticMatches, 3 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2171 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=444occurred in iteration=6, InterpolantAutomatonStates: 120, 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, 0.7s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 306 NumberOfCodeBlocks, 306 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 430 ConstructedInterpolants, 0 QuantifiedInterpolants, 2562 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1192 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 264/402 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! [2024-06-04 16:29:02,411 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