./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_power.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_power.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe019_power.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_power.oepc.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-7724a2d-m [2024-06-28 00:28:15,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 00:28:15,895 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 00:28:15,900 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 00:28:15,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 00:28:15,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 00:28:15,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 00:28:15,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 00:28:15,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 00:28:15,935 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 00:28:15,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 00:28:15,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 00:28:15,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 00:28:15,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 00:28:15,938 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 00:28:15,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 00:28:15,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 00:28:15,945 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 00:28:15,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 00:28:15,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 00:28:15,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 00:28:15,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 00:28:15,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 00:28:15,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 00:28:15,946 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 00:28:15,947 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 00:28:15,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 00:28:15,947 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 00:28:15,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 00:28:15,948 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 00:28:15,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 00:28:15,948 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 00:28:15,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:28:15,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 00:28:15,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 00:28:15,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 00:28:15,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 00:28:15,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 00:28:15,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 00:28:15,950 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 00:28:15,950 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 00:28:15,950 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 00:28:15,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 00:28:15,951 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 00:28:16,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 00:28:16,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 00:28:16,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 00:28:16,163 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 00:28:16,163 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 00:28:16,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_power.oepc.i [2024-06-28 00:28:17,122 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 00:28:17,331 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 00:28:17,332 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.oepc.i [2024-06-28 00:28:17,350 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810928d36/ef35d1cc2f624a5d909bad98209076a4/FLAG8f85f7363 [2024-06-28 00:28:17,360 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/810928d36/ef35d1cc2f624a5d909bad98209076a4 [2024-06-28 00:28:17,363 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 00:28:17,364 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 00:28:17,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-rel/safe019_power.oepc.yml/witness.yml [2024-06-28 00:28:17,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 00:28:17,421 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 00:28:17,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 00:28:17,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 00:28:17,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 00:28:17,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:28:17" (1/2) ... [2024-06-28 00:28:17,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f64f491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:17, skipping insertion in model container [2024-06-28 00:28:17,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 12:28:17" (1/2) ... [2024-06-28 00:28:17,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2d968f9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 12:28:17, skipping insertion in model container [2024-06-28 00:28:17,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:28:17" (2/2) ... [2024-06-28 00:28:17,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f64f491 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17, skipping insertion in model container [2024-06-28 00:28:17,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:28:17" (2/2) ... [2024-06-28 00:28:17,432 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 00:28:17,459 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 00:28:17,463 INFO L97 edCorrectnessWitness]: Location invariant before [L859-L859] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-28 00:28:17,463 INFO L97 edCorrectnessWitness]: Location invariant before [L862-L862] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-28 00:28:17,463 INFO L97 edCorrectnessWitness]: Location invariant before [L857-L857] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-28 00:28:17,464 INFO L97 edCorrectnessWitness]: Location invariant before [L861-L861] ! multithreaded || ((0LL - (long long )__unbuffered_p0_EBX) + (long long )x >= 0LL && (0LL - (long long )__unbuffered_p2_EAX) + (long long )x >= 0LL) [2024-06-28 00:28:17,464 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 00:28:17,464 INFO L106 edCorrectnessWitness]: ghost_update [L855-L855] multithreaded = 1; [2024-06-28 00:28:17,504 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 00:28:17,788 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:28:17,799 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 00:28:17,891 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 00:28:17,926 INFO L206 MainTranslator]: Completed translation [2024-06-28 00:28:17,926 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17 WrapperNode [2024-06-28 00:28:17,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 00:28:17,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 00:28:17,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 00:28:17,927 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 00:28:17,932 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 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:17,967 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 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:17,995 INFO L138 Inliner]: procedures = 176, calls = 72, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 180 [2024-06-28 00:28:17,996 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 00:28:17,997 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 00:28:17,997 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 00:28:17,997 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 00:28:18,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,026 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,052 INFO L175 MemorySlicer]: Split 26 memory accesses to 2 slices as follows [2, 24]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-06-28 00:28:18,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,064 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,072 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,085 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 00:28:18,088 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 00:28:18,089 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 00:28:18,089 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 00:28:18,089 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (1/1) ... [2024-06-28 00:28:18,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 00:28:18,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 00:28:18,113 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) [2024-06-28 00:28:18,128 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 [2024-06-28 00:28:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-06-28 00:28:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-06-28 00:28:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-06-28 00:28:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-06-28 00:28:18,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 00:28:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 00:28:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 00:28:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 00:28:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 00:28:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 00:28:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-28 00:28:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-28 00:28:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-06-28 00:28:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-06-28 00:28:18,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 00:28:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-06-28 00:28:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 00:28:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 00:28:18,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 00:28:18,144 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 00:28:18,264 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 00:28:18,265 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 00:28:18,645 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 00:28:18,645 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 00:28:18,854 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 00:28:18,855 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 00:28:18,855 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:28:18 BoogieIcfgContainer [2024-06-28 00:28:18,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 00:28:18,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 00:28:18,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 00:28:18,860 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 00:28:18,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 12:28:17" (1/4) ... [2024-06-28 00:28:18,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82f6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 12:28:18, skipping insertion in model container [2024-06-28 00:28:18,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 12:28:17" (2/4) ... [2024-06-28 00:28:18,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82f6b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:28:18, skipping insertion in model container [2024-06-28 00:28:18,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 12:28:17" (3/4) ... [2024-06-28 00:28:18,861 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e82f6b4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 12:28:18, skipping insertion in model container [2024-06-28 00:28:18,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 12:28:18" (4/4) ... [2024-06-28 00:28:18,862 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.oepc.i [2024-06-28 00:28:18,876 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 00:28:18,877 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-28 00:28:18,877 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 00:28:18,924 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 00:28:18,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 49 transitions, 114 flow [2024-06-28 00:28:18,967 INFO L124 PetriNetUnfolderBase]: 0/45 cut-off events. [2024-06-28 00:28:18,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:28:18,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 45 events. 0/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 00:28:18,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 49 transitions, 114 flow [2024-06-28 00:28:18,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 39 transitions, 90 flow [2024-06-28 00:28:18,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 00:28:18,983 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;@3a2b5faf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 00:28:18,983 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-06-28 00:28:18,987 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 00:28:18,987 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 00:28:18,987 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 00:28:18,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:18,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 00:28:18,988 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:18,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:18,992 INFO L85 PathProgramCache]: Analyzing trace with hash 714791436, now seen corresponding path program 1 times [2024-06-28 00:28:18,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:18,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423591029] [2024-06-28 00:28:18,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:18,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:19,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:19,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:19,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423591029] [2024-06-28 00:28:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423591029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:19,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:19,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 00:28:19,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13630134] [2024-06-28 00:28:19,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:19,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 00:28:19,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:19,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 00:28:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 00:28:19,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 49 [2024-06-28 00:28:19,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:19,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:19,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 49 [2024-06-28 00:28:19,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:19,831 INFO L124 PetriNetUnfolderBase]: 1249/2023 cut-off events. [2024-06-28 00:28:19,831 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 00:28:19,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 2023 events. 1249/2023 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 11977 event pairs, 476 based on Foata normal form. 48/1999 useless extension candidates. Maximal degree in co-relation 3922. Up to 1434 conditions per place. [2024-06-28 00:28:19,845 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 38 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-06-28 00:28:19,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 53 transitions, 204 flow [2024-06-28 00:28:19,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 00:28:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 00:28:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 101 transitions. [2024-06-28 00:28:19,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6870748299319728 [2024-06-28 00:28:19,856 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 90 flow. Second operand 3 states and 101 transitions. [2024-06-28 00:28:19,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 53 transitions, 204 flow [2024-06-28 00:28:19,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 53 transitions, 198 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-06-28 00:28:19,864 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 96 flow [2024-06-28 00:28:19,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-28 00:28:19,869 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2024-06-28 00:28:19,869 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 96 flow [2024-06-28 00:28:19,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 00:28:19,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:19,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:19,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 00:28:19,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:19,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:19,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1475833326, now seen corresponding path program 1 times [2024-06-28 00:28:19,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:19,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662842834] [2024-06-28 00:28:19,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:19,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:19,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:19,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662842834] [2024-06-28 00:28:19,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662842834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:19,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:19,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 00:28:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353183014] [2024-06-28 00:28:19,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:19,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 00:28:19,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:19,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 00:28:19,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 00:28:19,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 00:28:19,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 96 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-06-28 00:28:19,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:19,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 00:28:19,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:20,401 INFO L124 PetriNetUnfolderBase]: 2116/3299 cut-off events. [2024-06-28 00:28:20,401 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-06-28 00:28:20,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7115 conditions, 3299 events. 2116/3299 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19528 event pairs, 602 based on Foata normal form. 24/3307 useless extension candidates. Maximal degree in co-relation 7103. Up to 2805 conditions per place. [2024-06-28 00:28:20,420 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 52 selfloop transitions, 6 changer transitions 0/69 dead transitions. [2024-06-28 00:28:20,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 287 flow [2024-06-28 00:28:20,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:28:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:28:20,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 129 transitions. [2024-06-28 00:28:20,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6581632653061225 [2024-06-28 00:28:20,422 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 96 flow. Second operand 4 states and 129 transitions. [2024-06-28 00:28:20,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 287 flow [2024-06-28 00:28:20,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 00:28:20,426 INFO L231 Difference]: Finished difference. Result has 53 places, 43 transitions, 134 flow [2024-06-28 00:28:20,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=53, PETRI_TRANSITIONS=43} [2024-06-28 00:28:20,426 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2024-06-28 00:28:20,426 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 43 transitions, 134 flow [2024-06-28 00:28:20,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2024-06-28 00:28:20,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:20,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:20,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 00:28:20,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:20,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:20,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1511616451, now seen corresponding path program 1 times [2024-06-28 00:28:20,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736094526] [2024-06-28 00:28:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:20,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:20,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736094526] [2024-06-28 00:28:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736094526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:28:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144965459] [2024-06-28 00:28:20,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:20,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:28:20,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:20,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:28:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:28:20,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 00:28:20,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 43 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-28 00:28:20,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:20,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 00:28:20,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:21,292 INFO L124 PetriNetUnfolderBase]: 2992/4997 cut-off events. [2024-06-28 00:28:21,292 INFO L125 PetriNetUnfolderBase]: For 1561/1561 co-relation queries the response was YES. [2024-06-28 00:28:21,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11003 conditions, 4997 events. 2992/4997 cut-off events. For 1561/1561 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 34474 event pairs, 488 based on Foata normal form. 184/5139 useless extension candidates. Maximal degree in co-relation 10989. Up to 2145 conditions per place. [2024-06-28 00:28:21,317 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 58 selfloop transitions, 7 changer transitions 2/78 dead transitions. [2024-06-28 00:28:21,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 78 transitions, 354 flow [2024-06-28 00:28:21,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 00:28:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 00:28:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-06-28 00:28:21,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2024-06-28 00:28:21,323 INFO L175 Difference]: Start difference. First operand has 53 places, 43 transitions, 134 flow. Second operand 4 states and 133 transitions. [2024-06-28 00:28:21,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 78 transitions, 354 flow [2024-06-28 00:28:21,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-28 00:28:21,326 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 172 flow [2024-06-28 00:28:21,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2024-06-28 00:28:21,327 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2024-06-28 00:28:21,327 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 172 flow [2024-06-28 00:28:21,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-28 00:28:21,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:21,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:21,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 00:28:21,328 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:21,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:21,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1511496481, now seen corresponding path program 2 times [2024-06-28 00:28:21,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:21,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934364021] [2024-06-28 00:28:21,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:21,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:21,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:21,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:21,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934364021] [2024-06-28 00:28:21,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934364021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:21,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:21,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:28:21,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585844227] [2024-06-28 00:28:21,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:21,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:28:21,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:21,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:28:21,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:28:21,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 00:28:21,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-28 00:28:21,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:21,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 00:28:21,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:21,991 INFO L124 PetriNetUnfolderBase]: 2936/4805 cut-off events. [2024-06-28 00:28:21,992 INFO L125 PetriNetUnfolderBase]: For 3190/3190 co-relation queries the response was YES. [2024-06-28 00:28:21,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11704 conditions, 4805 events. 2936/4805 cut-off events. For 3190/3190 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 32458 event pairs, 444 based on Foata normal form. 24/4775 useless extension candidates. Maximal degree in co-relation 11687. Up to 3641 conditions per place. [2024-06-28 00:28:22,013 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 60 selfloop transitions, 8 changer transitions 1/80 dead transitions. [2024-06-28 00:28:22,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 80 transitions, 394 flow [2024-06-28 00:28:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:28:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:28:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-28 00:28:22,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-06-28 00:28:22,015 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 172 flow. Second operand 5 states and 153 transitions. [2024-06-28 00:28:22,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 80 transitions, 394 flow [2024-06-28 00:28:22,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 80 transitions, 378 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 00:28:22,020 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 184 flow [2024-06-28 00:28:22,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=184, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-28 00:28:22,021 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-06-28 00:28:22,021 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 184 flow [2024-06-28 00:28:22,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2024-06-28 00:28:22,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:22,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:22,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 00:28:22,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:22,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:22,022 INFO L85 PathProgramCache]: Analyzing trace with hash -390615367, now seen corresponding path program 1 times [2024-06-28 00:28:22,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:22,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598636430] [2024-06-28 00:28:22,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:22,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:22,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:22,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598636430] [2024-06-28 00:28:22,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598636430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:22,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:22,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 00:28:22,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21588830] [2024-06-28 00:28:22,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:22,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:28:22,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:28:22,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:28:22,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 00:28:22,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 184 flow. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-06-28 00:28:22,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:22,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 00:28:22,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:22,665 INFO L124 PetriNetUnfolderBase]: 2686/4655 cut-off events. [2024-06-28 00:28:22,665 INFO L125 PetriNetUnfolderBase]: For 3209/3213 co-relation queries the response was YES. [2024-06-28 00:28:22,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11121 conditions, 4655 events. 2686/4655 cut-off events. For 3209/3213 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 32385 event pairs, 602 based on Foata normal form. 83/4724 useless extension candidates. Maximal degree in co-relation 11103. Up to 2279 conditions per place. [2024-06-28 00:28:22,688 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 69 selfloop transitions, 8 changer transitions 2/90 dead transitions. [2024-06-28 00:28:22,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 455 flow [2024-06-28 00:28:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:28:22,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:28:22,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 161 transitions. [2024-06-28 00:28:22,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2024-06-28 00:28:22,691 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 184 flow. Second operand 5 states and 161 transitions. [2024-06-28 00:28:22,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 455 flow [2024-06-28 00:28:22,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 90 transitions, 442 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-28 00:28:22,696 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 195 flow [2024-06-28 00:28:22,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=195, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-06-28 00:28:22,697 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2024-06-28 00:28:22,697 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 195 flow [2024-06-28 00:28:22,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2024-06-28 00:28:22,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:22,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:22,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 00:28:22,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:22,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:22,698 INFO L85 PathProgramCache]: Analyzing trace with hash -4220304, now seen corresponding path program 1 times [2024-06-28 00:28:22,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:22,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117442493] [2024-06-28 00:28:22,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:22,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:22,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:22,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:22,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117442493] [2024-06-28 00:28:22,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117442493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:22,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:22,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:28:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769397432] [2024-06-28 00:28:22,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:22,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:28:22,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:22,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:28:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:28:22,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 00:28:22,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 195 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-06-28 00:28:22,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:22,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 00:28:22,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:23,317 INFO L124 PetriNetUnfolderBase]: 2428/4075 cut-off events. [2024-06-28 00:28:23,318 INFO L125 PetriNetUnfolderBase]: For 3981/3981 co-relation queries the response was YES. [2024-06-28 00:28:23,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9960 conditions, 4075 events. 2428/4075 cut-off events. For 3981/3981 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27288 event pairs, 396 based on Foata normal form. 80/4135 useless extension candidates. Maximal degree in co-relation 9940. Up to 1153 conditions per place. [2024-06-28 00:28:23,333 INFO L140 encePairwiseOnDemand]: 43/49 looper letters, 64 selfloop transitions, 7 changer transitions 6/88 dead transitions. [2024-06-28 00:28:23,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 445 flow [2024-06-28 00:28:23,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:28:23,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:28:23,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 160 transitions. [2024-06-28 00:28:23,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6530612244897959 [2024-06-28 00:28:23,335 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 195 flow. Second operand 5 states and 160 transitions. [2024-06-28 00:28:23,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 445 flow [2024-06-28 00:28:23,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 429 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 00:28:23,341 INFO L231 Difference]: Finished difference. Result has 66 places, 42 transitions, 178 flow [2024-06-28 00:28:23,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=66, PETRI_TRANSITIONS=42} [2024-06-28 00:28:23,342 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 14 predicate places. [2024-06-28 00:28:23,342 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 42 transitions, 178 flow [2024-06-28 00:28:23,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-06-28 00:28:23,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:23,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:23,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 00:28:23,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:23,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash -140485190, now seen corresponding path program 2 times [2024-06-28 00:28:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:23,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125803054] [2024-06-28 00:28:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:23,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:23,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:23,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125803054] [2024-06-28 00:28:23,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125803054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:23,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:23,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:28:23,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052285616] [2024-06-28 00:28:23,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:23,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:28:23,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:23,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:28:23,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:28:23,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 00:28:23,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 42 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-28 00:28:23,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:23,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 00:28:23,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:23,920 INFO L124 PetriNetUnfolderBase]: 2254/3867 cut-off events. [2024-06-28 00:28:23,920 INFO L125 PetriNetUnfolderBase]: For 4578/4578 co-relation queries the response was YES. [2024-06-28 00:28:23,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9219 conditions, 3867 events. 2254/3867 cut-off events. For 4578/4578 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 26140 event pairs, 298 based on Foata normal form. 80/3893 useless extension candidates. Maximal degree in co-relation 9197. Up to 1312 conditions per place. [2024-06-28 00:28:23,935 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 50 selfloop transitions, 4 changer transitions 17/82 dead transitions. [2024-06-28 00:28:23,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 82 transitions, 410 flow [2024-06-28 00:28:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:28:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:28:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-06-28 00:28:23,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-06-28 00:28:23,937 INFO L175 Difference]: Start difference. First operand has 66 places, 42 transitions, 178 flow. Second operand 5 states and 155 transitions. [2024-06-28 00:28:23,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 82 transitions, 410 flow [2024-06-28 00:28:23,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 82 transitions, 378 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 00:28:23,941 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 146 flow [2024-06-28 00:28:23,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2024-06-28 00:28:23,942 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 10 predicate places. [2024-06-28 00:28:23,942 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 146 flow [2024-06-28 00:28:23,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-28 00:28:23,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:23,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:23,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 00:28:23,943 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:23,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:23,943 INFO L85 PathProgramCache]: Analyzing trace with hash -140216420, now seen corresponding path program 3 times [2024-06-28 00:28:23,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:23,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931706770] [2024-06-28 00:28:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:23,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:23,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:24,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:24,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931706770] [2024-06-28 00:28:24,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931706770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:24,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:24,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:28:24,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751283495] [2024-06-28 00:28:24,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:24,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 00:28:24,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:24,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 00:28:24,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 00:28:24,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 00:28:24,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-28 00:28:24,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:24,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 00:28:24,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:24,519 INFO L124 PetriNetUnfolderBase]: 2118/3751 cut-off events. [2024-06-28 00:28:24,519 INFO L125 PetriNetUnfolderBase]: For 3394/3394 co-relation queries the response was YES. [2024-06-28 00:28:24,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8525 conditions, 3751 events. 2118/3751 cut-off events. For 3394/3394 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 25775 event pairs, 338 based on Foata normal form. 80/3733 useless extension candidates. Maximal degree in co-relation 8507. Up to 1624 conditions per place. [2024-06-28 00:28:24,536 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 36 selfloop transitions, 1 changer transitions 30/78 dead transitions. [2024-06-28 00:28:24,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 78 transitions, 364 flow [2024-06-28 00:28:24,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:28:24,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:28:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 153 transitions. [2024-06-28 00:28:24,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6244897959183674 [2024-06-28 00:28:24,537 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 146 flow. Second operand 5 states and 153 transitions. [2024-06-28 00:28:24,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 78 transitions, 364 flow [2024-06-28 00:28:24,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 350 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 00:28:24,546 INFO L231 Difference]: Finished difference. Result has 61 places, 37 transitions, 117 flow [2024-06-28 00:28:24,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=61, PETRI_TRANSITIONS=37} [2024-06-28 00:28:24,547 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-06-28 00:28:24,547 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 37 transitions, 117 flow [2024-06-28 00:28:24,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 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) [2024-06-28 00:28:24,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 00:28:24,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 00:28:24,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 00:28:24,548 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 5 more)] === [2024-06-28 00:28:24,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 00:28:24,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1482820516, now seen corresponding path program 4 times [2024-06-28 00:28:24,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 00:28:24,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723407762] [2024-06-28 00:28:24,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 00:28:24,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 00:28:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 00:28:24,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 00:28:24,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 00:28:24,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723407762] [2024-06-28 00:28:24,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723407762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 00:28:24,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 00:28:24,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 00:28:24,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975756397] [2024-06-28 00:28:24,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 00:28:24,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 00:28:24,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 00:28:24,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 00:28:24,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 00:28:24,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 49 [2024-06-28 00:28:24,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 37 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-06-28 00:28:24,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 00:28:24,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 49 [2024-06-28 00:28:24,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 00:28:25,013 INFO L124 PetriNetUnfolderBase]: 1026/1895 cut-off events. [2024-06-28 00:28:25,013 INFO L125 PetriNetUnfolderBase]: For 1360/1360 co-relation queries the response was YES. [2024-06-28 00:28:25,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4160 conditions, 1895 events. 1026/1895 cut-off events. For 1360/1360 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11521 event pairs, 170 based on Foata normal form. 80/1963 useless extension candidates. Maximal degree in co-relation 4151. Up to 604 conditions per place. [2024-06-28 00:28:25,019 INFO L140 encePairwiseOnDemand]: 44/49 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2024-06-28 00:28:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 237 flow [2024-06-28 00:28:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 00:28:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 00:28:25,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2024-06-28 00:28:25,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-06-28 00:28:25,020 INFO L175 Difference]: Start difference. First operand has 61 places, 37 transitions, 117 flow. Second operand 5 states and 133 transitions. [2024-06-28 00:28:25,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 237 flow [2024-06-28 00:28:25,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 226 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-28 00:28:25,022 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-06-28 00:28:25,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-06-28 00:28:25,023 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2024-06-28 00:28:25,023 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-06-28 00:28:25,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-06-28 00:28:25,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (7 of 8 remaining) [2024-06-28 00:28:25,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (6 of 8 remaining) [2024-06-28 00:28:25,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (5 of 8 remaining) [2024-06-28 00:28:25,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 8 remaining) [2024-06-28 00:28:25,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2024-06-28 00:28:25,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2024-06-28 00:28:25,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2024-06-28 00:28:25,026 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2024-06-28 00:28:25,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 00:28:25,027 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1] [2024-06-28 00:28:25,029 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 00:28:25,029 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 00:28:25,032 INFO L507 ceAbstractionStarter]: Automizer considered 4 witness invariants [2024-06-28 00:28:25,032 INFO L508 ceAbstractionStarter]: WitnessConsidered=4 [2024-06-28 00:28:25,033 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 12:28:25 BasicIcfg [2024-06-28 00:28:25,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 00:28:25,033 INFO L158 Benchmark]: Toolchain (without parser) took 7612.02ms. Allocated memory was 148.9MB in the beginning and 1.0GB in the end (delta: 897.6MB). Free memory was 95.0MB in the beginning and 624.3MB in the end (delta: -529.3MB). Peak memory consumption was 370.0MB. Max. memory is 16.1GB. [2024-06-28 00:28:25,033 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 148.9MB. Free memory was 115.4MB in the beginning and 115.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:28:25,034 INFO L158 Benchmark]: Witness Parser took 0.70ms. Allocated memory is still 148.9MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 00:28:25,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.51ms. Allocated memory is still 148.9MB. Free memory was 95.0MB in the beginning and 63.6MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 00:28:25,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.83ms. Allocated memory is still 148.9MB. Free memory was 63.6MB in the beginning and 60.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 00:28:25,034 INFO L158 Benchmark]: Boogie Preprocessor took 90.60ms. Allocated memory is still 148.9MB. Free memory was 60.2MB in the beginning and 56.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 00:28:25,034 INFO L158 Benchmark]: RCFGBuilder took 767.21ms. Allocated memory was 148.9MB in the beginning and 188.7MB in the end (delta: 39.8MB). Free memory was 55.8MB in the beginning and 129.3MB in the end (delta: -73.5MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2024-06-28 00:28:25,034 INFO L158 Benchmark]: TraceAbstraction took 6175.86ms. Allocated memory was 188.7MB in the beginning and 1.0GB in the end (delta: 857.7MB). Free memory was 128.2MB in the beginning and 624.3MB in the end (delta: -496.1MB). Peak memory consumption was 361.7MB. Max. memory is 16.1GB. [2024-06-28 00:28:25,035 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 148.9MB. Free memory was 115.4MB in the beginning and 115.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.70ms. Allocated memory is still 148.9MB. Free memory is still 98.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.51ms. Allocated memory is still 148.9MB. Free memory was 95.0MB in the beginning and 63.6MB in the end (delta: 31.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.83ms. Allocated memory is still 148.9MB. Free memory was 63.6MB in the beginning and 60.2MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.60ms. Allocated memory is still 148.9MB. Free memory was 60.2MB in the beginning and 56.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 767.21ms. Allocated memory was 148.9MB in the beginning and 188.7MB in the end (delta: 39.8MB). Free memory was 55.8MB in the beginning and 129.3MB in the end (delta: -73.5MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6175.86ms. Allocated memory was 188.7MB in the beginning and 1.0GB in the end (delta: 857.7MB). Free memory was 128.2MB in the beginning and 624.3MB in the end (delta: -496.1MB). Peak memory consumption was 361.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 857]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 859]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 861]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 862]: 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 9 procedures, 80 locations, 8 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: 6.1s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 587 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 506 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 40 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1143 IncrementalHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 40 mSolverCounterUnsat, 20 mSDtfsCounter, 1143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 493 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 00:28:25,057 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