./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i ./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-04 14:20:32,690 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-04 14:20:32,746 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-04 14:20:32,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-04 14:20:32,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-04 14:20:32,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-04 14:20:32,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-04 14:20:32,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-04 14:20:32,831 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-04 14:20:32,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-04 14:20:32,833 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-04 14:20:32,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-04 14:20:32,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-04 14:20:32,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-04 14:20:32,837 INFO L153 SettingsManager]: * Use SBE=true [2024-06-04 14:20:32,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-04 14:20:32,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-04 14:20:32,839 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-04 14:20:32,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-04 14:20:32,839 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-04 14:20:32,839 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-04 14:20:32,840 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-04 14:20:32,840 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-04 14:20:32,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-04 14:20:32,840 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-04 14:20:32,841 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-04 14:20:32,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-04 14:20:32,841 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-04 14:20:32,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-04 14:20:32,842 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-04 14:20:32,842 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-04 14:20:32,843 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-04 14:20:32,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:20:32,843 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-04 14:20:32,843 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-04 14:20:32,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-04 14:20:32,843 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-04 14:20:32,844 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-04 14:20:32,844 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-04 14:20:32,844 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-04 14:20:32,844 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-04 14:20:32,844 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-04 14:20:32,845 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-04 14:20:32,845 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-04 14:20:33,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-04 14:20:33,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-04 14:20:33,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-04 14:20:33,103 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-04 14:20:33,103 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-04 14:20:33,104 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe033_tso.yml/witness.yml [2024-06-04 14:20:33,220 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-04 14:20:33,220 INFO L274 PluginConnector]: CDTParser initialized [2024-06-04 14:20:33,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-04 14:20:34,273 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-04 14:20:34,479 INFO L384 CDTParser]: Found 1 translation units. [2024-06-04 14:20:34,482 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-04 14:20:34,492 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6092111/44dbec7e137446c4b1de2166c544c612/FLAG312093e85 [2024-06-04 14:20:34,503 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e6092111/44dbec7e137446c4b1de2166c544c612 [2024-06-04 14:20:34,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-04 14:20:34,507 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-04 14:20:34,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-04 14:20:34,509 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-04 14:20:34,513 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-04 14:20:34,513 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:20:33" (1/2) ... [2024-06-04 14:20:34,514 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70291686 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:20:34, skipping insertion in model container [2024-06-04 14:20:34,514 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:20:33" (1/2) ... [2024-06-04 14:20:34,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3179b824 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 04.06 02:20:34, skipping insertion in model container [2024-06-04 14:20:34,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:20:34" (2/2) ... [2024-06-04 14:20:34,516 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70291686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34, skipping insertion in model container [2024-06-04 14:20:34,517 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.06 02:20:34" (2/2) ... [2024-06-04 14:20:34,517 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-04 14:20:34,545 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-04 14:20:34,546 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] (((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-06-04 14:20:34,546 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] (((! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (((0 <= y && y <= 2) && y <= 127) && ((y == 0 || y == 1) || y == 2))) [2024-06-04 14:20:34,546 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-04 14:20:34,546 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-04 14:20:34,584 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-04 14:20:34,820 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:20:34,828 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-04 14:20:34,888 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-04 14:20:34,918 INFO L206 MainTranslator]: Completed translation [2024-06-04 14:20:34,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34 WrapperNode [2024-06-04 14:20:34,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-04 14:20:34,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-04 14:20:34,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-04 14:20:34,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-04 14:20:34,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:34,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:34,974 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2024-06-04 14:20:34,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-04 14:20:34,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-04 14:20:34,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-04 14:20:34,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-04 14:20:34,983 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:34,983 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:34,990 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:35,007 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-04 14:20:35,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:35,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:35,019 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:35,020 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:35,023 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:35,024 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:35,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-04 14:20:35,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-04 14:20:35,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-04 14:20:35,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-04 14:20:35,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (1/1) ... [2024-06-04 14:20:35,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-04 14:20:35,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-04 14:20:35,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-04 14:20:35,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-04 14:20:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-04 14:20:35,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-04 14:20:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-04 14:20:35,080 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-04 14:20:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-04 14:20:35,080 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-04 14:20:35,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-04 14:20:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-04 14:20:35,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-04 14:20:35,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-04 14:20:35,082 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-04 14:20:35,189 INFO L244 CfgBuilder]: Building ICFG [2024-06-04 14:20:35,191 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-04 14:20:35,331 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-04 14:20:35,331 INFO L293 CfgBuilder]: Performing block encoding [2024-06-04 14:20:35,396 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-04 14:20:35,397 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-04 14:20:35,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:20:35 BoogieIcfgContainer [2024-06-04 14:20:35,397 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-04 14:20:35,399 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-04 14:20:35,399 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-04 14:20:35,403 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-04 14:20:35,406 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 04.06 02:20:33" (1/4) ... [2024-06-04 14:20:35,407 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc01d39 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 04.06 02:20:35, skipping insertion in model container [2024-06-04 14:20:35,407 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.06 02:20:34" (2/4) ... [2024-06-04 14:20:35,408 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc01d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:20:35, skipping insertion in model container [2024-06-04 14:20:35,408 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.06 02:20:34" (3/4) ... [2024-06-04 14:20:35,409 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc01d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.06 02:20:35, skipping insertion in model container [2024-06-04 14:20:35,409 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.06 02:20:35" (4/4) ... [2024-06-04 14:20:35,410 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-06-04 14:20:35,425 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-04 14:20:35,426 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-04 14:20:35,426 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-04 14:20:35,452 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-04 14:20:35,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-04 14:20:35,493 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-04 14:20:35,493 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:20:35,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-04 14:20:35,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-04 14:20:35,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-04 14:20:35,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-04 14:20:35,509 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;@7aeb41c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-04 14:20:35,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-04 14:20:35,519 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-04 14:20:35,519 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-04 14:20:35,519 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-04 14:20:35,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:35,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-04 14:20:35,520 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:35,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:35,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1558193034, now seen corresponding path program 1 times [2024-06-04 14:20:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222717457] [2024-06-04 14:20:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:35,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:35,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222717457] [2024-06-04 14:20:35,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222717457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:35,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:35,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-04 14:20:35,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666922223] [2024-06-04 14:20:35,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:35,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-04 14:20:35,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:35,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-04 14:20:35,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-04 14:20:36,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-06-04 14:20:36,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:36,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:36,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-06-04 14:20:36,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:36,071 INFO L124 PetriNetUnfolderBase]: 83/183 cut-off events. [2024-06-04 14:20:36,071 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-04 14:20:36,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 183 events. 83/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 709 event pairs, 43 based on Foata normal form. 1/172 useless extension candidates. Maximal degree in co-relation 343. Up to 153 conditions per place. [2024-06-04 14:20:36,075 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 20 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-04 14:20:36,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 113 flow [2024-06-04 14:20:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-04 14:20:36,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-04 14:20:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-04 14:20:36,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6559139784946236 [2024-06-04 14:20:36,088 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 61 transitions. [2024-06-04 14:20:36,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 113 flow [2024-06-04 14:20:36,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-04 14:20:36,092 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-04 14:20:36,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-04 14:20:36,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-04 14:20:36,098 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-04 14:20:36,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:36,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:36,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:36,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-04 14:20:36,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:36,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:36,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1519960829, now seen corresponding path program 1 times [2024-06-04 14:20:36,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:36,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141196799] [2024-06-04 14:20:36,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:36,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:36,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:36,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:36,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141196799] [2024-06-04 14:20:36,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141196799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:36,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:36,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:20:36,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595275435] [2024-06-04 14:20:36,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:36,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:20:36,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:36,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:20:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:20:36,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 31 [2024-06-04 14:20:36,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:36,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:36,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 31 [2024-06-04 14:20:36,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:36,361 INFO L124 PetriNetUnfolderBase]: 80/178 cut-off events. [2024-06-04 14:20:36,364 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-04 14:20:36,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 178 events. 80/178 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 680 event pairs, 34 based on Foata normal form. 2/175 useless extension candidates. Maximal degree in co-relation 387. Up to 139 conditions per place. [2024-06-04 14:20:36,366 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 24 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-04 14:20:36,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 155 flow [2024-06-04 14:20:36,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:20:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:20:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2024-06-04 14:20:36,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370967741935484 [2024-06-04 14:20:36,369 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 79 transitions. [2024-06-04 14:20:36,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 155 flow [2024-06-04 14:20:36,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-04 14:20:36,373 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-04 14:20:36,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-04 14:20:36,374 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-04 14:20:36,374 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-04 14:20:36,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:36,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:36,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:36,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-04 14:20:36,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:36,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:36,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1618377718, now seen corresponding path program 1 times [2024-06-04 14:20:36,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:36,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343244864] [2024-06-04 14:20:36,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:36,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:36,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:36,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343244864] [2024-06-04 14:20:36,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343244864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:36,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:36,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-04 14:20:36,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192379745] [2024-06-04 14:20:36,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:36,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-04 14:20:36,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:36,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-04 14:20:36,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-04 14:20:36,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:36,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:36,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:36,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:36,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:36,626 INFO L124 PetriNetUnfolderBase]: 101/210 cut-off events. [2024-06-04 14:20:36,626 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-06-04 14:20:36,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 210 events. 101/210 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 779 event pairs, 48 based on Foata normal form. 1/209 useless extension candidates. Maximal degree in co-relation 521. Up to 182 conditions per place. [2024-06-04 14:20:36,630 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 24 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-04 14:20:36,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 171 flow [2024-06-04 14:20:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-04 14:20:36,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-04 14:20:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-04 14:20:36,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-04 14:20:36,633 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 4 states and 72 transitions. [2024-06-04 14:20:36,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 171 flow [2024-06-04 14:20:36,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 162 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:20:36,636 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 111 flow [2024-06-04 14:20:36,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=111, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-04 14:20:36,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-06-04 14:20:36,637 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 111 flow [2024-06-04 14:20:36,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:36,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:36,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:36,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-04 14:20:36,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:36,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1589661287, now seen corresponding path program 1 times [2024-06-04 14:20:36,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:36,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143385857] [2024-06-04 14:20:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:36,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:36,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:36,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143385857] [2024-06-04 14:20:36,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143385857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:36,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:36,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:36,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646737195] [2024-06-04 14:20:36,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:36,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:36,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:36,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:36,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:36,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:36,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:36,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:36,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:36,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:36,907 INFO L124 PetriNetUnfolderBase]: 97/206 cut-off events. [2024-06-04 14:20:36,907 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-04 14:20:36,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 206 events. 97/206 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 747 event pairs, 14 based on Foata normal form. 4/208 useless extension candidates. Maximal degree in co-relation 537. Up to 141 conditions per place. [2024-06-04 14:20:36,909 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-04 14:20:36,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 223 flow [2024-06-04 14:20:36,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-04 14:20:36,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-04 14:20:36,912 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 111 flow. Second operand 6 states and 105 transitions. [2024-06-04 14:20:36,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 223 flow [2024-06-04 14:20:36,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 44 transitions, 214 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-04 14:20:36,914 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 127 flow [2024-06-04 14:20:36,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=127, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-04 14:20:36,915 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-04 14:20:36,915 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 127 flow [2024-06-04 14:20:36,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:36,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:36,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-04 14:20:36,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:36,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1369897695, now seen corresponding path program 1 times [2024-06-04 14:20:36,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:36,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258679157] [2024-06-04 14:20:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:36,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:37,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:37,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:37,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258679157] [2024-06-04 14:20:37,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258679157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:37,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:37,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:20:37,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809629780] [2024-06-04 14:20:37,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:37,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:20:37,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:37,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:20:37,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:20:37,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:37,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:37,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:37,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:37,077 INFO L124 PetriNetUnfolderBase]: 99/210 cut-off events. [2024-06-04 14:20:37,078 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-06-04 14:20:37,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 210 events. 99/210 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 784 event pairs, 26 based on Foata normal form. 2/208 useless extension candidates. Maximal degree in co-relation 598. Up to 152 conditions per place. [2024-06-04 14:20:37,079 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 11 changer transitions 0/43 dead transitions. [2024-06-04 14:20:37,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 249 flow [2024-06-04 14:20:37,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:20:37,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:20:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2024-06-04 14:20:37,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-04 14:20:37,080 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 127 flow. Second operand 5 states and 90 transitions. [2024-06-04 14:20:37,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 249 flow [2024-06-04 14:20:37,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 233 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-04 14:20:37,082 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 177 flow [2024-06-04 14:20:37,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2024-06-04 14:20:37,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-04 14:20:37,088 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 177 flow [2024-06-04 14:20:37,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:37,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:37,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-04 14:20:37,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:37,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:37,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1747112811, now seen corresponding path program 1 times [2024-06-04 14:20:37,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:37,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208732282] [2024-06-04 14:20:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:37,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:37,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:37,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208732282] [2024-06-04 14:20:37,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208732282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:37,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:20:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763283971] [2024-06-04 14:20:37,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:37,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:20:37,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:20:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:20:37,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:37,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:37,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:37,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:37,240 INFO L124 PetriNetUnfolderBase]: 102/219 cut-off events. [2024-06-04 14:20:37,241 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-06-04 14:20:37,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 219 events. 102/219 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 824 event pairs, 26 based on Foata normal form. 1/217 useless extension candidates. Maximal degree in co-relation 706. Up to 154 conditions per place. [2024-06-04 14:20:37,242 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 13 changer transitions 0/48 dead transitions. [2024-06-04 14:20:37,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 48 transitions, 312 flow [2024-06-04 14:20:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:20:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:20:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 94 transitions. [2024-06-04 14:20:37,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6064516129032258 [2024-06-04 14:20:37,243 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 177 flow. Second operand 5 states and 94 transitions. [2024-06-04 14:20:37,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 48 transitions, 312 flow [2024-06-04 14:20:37,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 48 transitions, 293 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-04 14:20:37,246 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 204 flow [2024-06-04 14:20:37,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-06-04 14:20:37,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-04 14:20:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 204 flow [2024-06-04 14:20:37,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:37,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:37,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-04 14:20:37,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:37,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash 410802025, now seen corresponding path program 2 times [2024-06-04 14:20:37,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:37,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631628682] [2024-06-04 14:20:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:37,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:37,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631628682] [2024-06-04 14:20:37,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631628682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:37,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:37,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-04 14:20:37,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119749730] [2024-06-04 14:20:37,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:37,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-04 14:20:37,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:37,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-04 14:20:37,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-04 14:20:37,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:37,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:37,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:37,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:37,377 INFO L124 PetriNetUnfolderBase]: 97/208 cut-off events. [2024-06-04 14:20:37,377 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2024-06-04 14:20:37,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 208 events. 97/208 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 761 event pairs, 27 based on Foata normal form. 2/206 useless extension candidates. Maximal degree in co-relation 690. Up to 149 conditions per place. [2024-06-04 14:20:37,379 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 12 changer transitions 0/44 dead transitions. [2024-06-04 14:20:37,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 296 flow [2024-06-04 14:20:37,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:20:37,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:20:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-04 14:20:37,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741935483870968 [2024-06-04 14:20:37,380 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 204 flow. Second operand 5 states and 89 transitions. [2024-06-04 14:20:37,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 296 flow [2024-06-04 14:20:37,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 277 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-04 14:20:37,382 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 216 flow [2024-06-04 14:20:37,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=216, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-04 14:20:37,383 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2024-06-04 14:20:37,383 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 216 flow [2024-06-04 14:20:37,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:37,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:37,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-04 14:20:37,384 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:37,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:37,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2083295168, now seen corresponding path program 1 times [2024-06-04 14:20:37,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:37,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726732373] [2024-06-04 14:20:37,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:37,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:37,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:37,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726732373] [2024-06-04 14:20:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726732373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:37,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:37,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:37,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438126027] [2024-06-04 14:20:37,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:37,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:37,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:37,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:37,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:37,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:37,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:37,580 INFO L124 PetriNetUnfolderBase]: 98/211 cut-off events. [2024-06-04 14:20:37,580 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2024-06-04 14:20:37,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 211 events. 98/211 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 780 event pairs, 26 based on Foata normal form. 4/211 useless extension candidates. Maximal degree in co-relation 706. Up to 140 conditions per place. [2024-06-04 14:20:37,582 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2024-06-04 14:20:37,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 322 flow [2024-06-04 14:20:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-04 14:20:37,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-04 14:20:37,583 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 216 flow. Second operand 6 states and 103 transitions. [2024-06-04 14:20:37,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 322 flow [2024-06-04 14:20:37,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 286 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-04 14:20:37,585 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 221 flow [2024-06-04 14:20:37,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-04 14:20:37,586 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-04 14:20:37,586 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 221 flow [2024-06-04 14:20:37,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:37,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:37,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-04 14:20:37,586 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:37,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:37,587 INFO L85 PathProgramCache]: Analyzing trace with hash 946235976, now seen corresponding path program 1 times [2024-06-04 14:20:37,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:37,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867426896] [2024-06-04 14:20:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:37,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:37,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:37,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867426896] [2024-06-04 14:20:37,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867426896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:37,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:37,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:37,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113608705] [2024-06-04 14:20:37,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:37,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:37,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:37,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:37,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:37,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:37,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:37,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:37,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:37,757 INFO L124 PetriNetUnfolderBase]: 101/221 cut-off events. [2024-06-04 14:20:37,758 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-06-04 14:20:37,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 221 events. 101/221 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 827 event pairs, 21 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 754. Up to 165 conditions per place. [2024-06-04 14:20:37,759 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 9 changer transitions 0/54 dead transitions. [2024-06-04 14:20:37,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 361 flow [2024-06-04 14:20:37,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:37,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:37,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-04 14:20:37,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-04 14:20:37,760 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 221 flow. Second operand 6 states and 105 transitions. [2024-06-04 14:20:37,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 361 flow [2024-06-04 14:20:37,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 326 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 14:20:37,763 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 223 flow [2024-06-04 14:20:37,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-06-04 14:20:37,763 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-04 14:20:37,763 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 223 flow [2024-06-04 14:20:37,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:37,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:37,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-04 14:20:37,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:37,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:37,765 INFO L85 PathProgramCache]: Analyzing trace with hash -152584530, now seen corresponding path program 2 times [2024-06-04 14:20:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:37,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375832207] [2024-06-04 14:20:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:37,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:37,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:37,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375832207] [2024-06-04 14:20:37,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375832207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:37,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:37,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:37,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20760855] [2024-06-04 14:20:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:37,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:37,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:37,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:37,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:37,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:37,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:37,905 INFO L124 PetriNetUnfolderBase]: 109/236 cut-off events. [2024-06-04 14:20:37,905 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-04 14:20:37,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 849 conditions, 236 events. 109/236 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 903 event pairs, 23 based on Foata normal form. 1/233 useless extension candidates. Maximal degree in co-relation 823. Up to 136 conditions per place. [2024-06-04 14:20:37,906 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 34 selfloop transitions, 21 changer transitions 0/60 dead transitions. [2024-06-04 14:20:37,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 439 flow [2024-06-04 14:20:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-04 14:20:37,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-04 14:20:37,908 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 223 flow. Second operand 6 states and 112 transitions. [2024-06-04 14:20:37,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 439 flow [2024-06-04 14:20:37,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 418 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:20:37,911 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 297 flow [2024-06-04 14:20:37,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-06-04 14:20:37,911 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2024-06-04 14:20:37,911 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 297 flow [2024-06-04 14:20:37,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:37,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:37,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:37,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-04 14:20:37,912 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:37,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:37,913 INFO L85 PathProgramCache]: Analyzing trace with hash 931812566, now seen corresponding path program 3 times [2024-06-04 14:20:37,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:37,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57488863] [2024-06-04 14:20:37,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:37,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:38,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:38,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57488863] [2024-06-04 14:20:38,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57488863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:38,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:38,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:38,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911745145] [2024-06-04 14:20:38,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:38,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:38,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:38,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:38,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:38,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:38,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 297 flow. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:38,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:38,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:38,077 INFO L124 PetriNetUnfolderBase]: 105/226 cut-off events. [2024-06-04 14:20:38,077 INFO L125 PetriNetUnfolderBase]: For 1039/1039 co-relation queries the response was YES. [2024-06-04 14:20:38,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 226 events. 105/226 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 884 event pairs, 27 based on Foata normal form. 2/222 useless extension candidates. Maximal degree in co-relation 839. Up to 133 conditions per place. [2024-06-04 14:20:38,079 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2024-06-04 14:20:38,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 437 flow [2024-06-04 14:20:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-04 14:20:38,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-06-04 14:20:38,080 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 297 flow. Second operand 6 states and 107 transitions. [2024-06-04 14:20:38,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 437 flow [2024-06-04 14:20:38,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 413 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-04 14:20:38,083 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 315 flow [2024-06-04 14:20:38,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-04 14:20:38,084 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-04 14:20:38,084 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 315 flow [2024-06-04 14:20:38,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:38,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:38,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-04 14:20:38,085 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:38,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:38,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1945649245, now seen corresponding path program 1 times [2024-06-04 14:20:38,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:38,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88165731] [2024-06-04 14:20:38,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:38,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:38,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:38,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88165731] [2024-06-04 14:20:38,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88165731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:38,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:38,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247187580] [2024-06-04 14:20:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:38,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:38,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:38,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:38,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 315 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:38,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:38,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:38,252 INFO L124 PetriNetUnfolderBase]: 108/235 cut-off events. [2024-06-04 14:20:38,253 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-06-04 14:20:38,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 235 events. 108/235 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 941 event pairs, 28 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 905. Up to 154 conditions per place. [2024-06-04 14:20:38,254 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 33 selfloop transitions, 18 changer transitions 0/56 dead transitions. [2024-06-04 14:20:38,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 449 flow [2024-06-04 14:20:38,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-04 14:20:38,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-04 14:20:38,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-04 14:20:38,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5935483870967742 [2024-06-04 14:20:38,256 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 315 flow. Second operand 5 states and 92 transitions. [2024-06-04 14:20:38,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 449 flow [2024-06-04 14:20:38,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 401 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:20:38,259 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 336 flow [2024-06-04 14:20:38,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-06-04 14:20:38,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-04 14:20:38,260 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 336 flow [2024-06-04 14:20:38,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:38,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:38,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-04 14:20:38,260 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:38,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:38,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1823471679, now seen corresponding path program 2 times [2024-06-04 14:20:38,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:38,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937135244] [2024-06-04 14:20:38,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:38,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:38,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:38,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937135244] [2024-06-04 14:20:38,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937135244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:38,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:38,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:38,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364790352] [2024-06-04 14:20:38,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:38,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:38,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:38,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:38,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:38,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:38,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:38,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:38,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:38,405 INFO L124 PetriNetUnfolderBase]: 111/240 cut-off events. [2024-06-04 14:20:38,405 INFO L125 PetriNetUnfolderBase]: For 1373/1373 co-relation queries the response was YES. [2024-06-04 14:20:38,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 965 conditions, 240 events. 111/240 cut-off events. For 1373/1373 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 969 event pairs, 28 based on Foata normal form. 1/235 useless extension candidates. Maximal degree in co-relation 935. Up to 141 conditions per place. [2024-06-04 14:20:38,407 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 30 selfloop transitions, 25 changer transitions 0/60 dead transitions. [2024-06-04 14:20:38,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 508 flow [2024-06-04 14:20:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:38,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-04 14:20:38,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752688172043011 [2024-06-04 14:20:38,408 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 336 flow. Second operand 6 states and 107 transitions. [2024-06-04 14:20:38,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 508 flow [2024-06-04 14:20:38,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 467 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-04 14:20:38,412 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 372 flow [2024-06-04 14:20:38,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=372, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2024-06-04 14:20:38,412 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-04 14:20:38,412 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 372 flow [2024-06-04 14:20:38,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:38,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:38,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-04 14:20:38,413 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:38,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:38,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1823679069, now seen corresponding path program 3 times [2024-06-04 14:20:38,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:38,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075300948] [2024-06-04 14:20:38,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:38,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:38,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:38,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075300948] [2024-06-04 14:20:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075300948] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:38,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:38,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010880132] [2024-06-04 14:20:38,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:38,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:38,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:38,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:38,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:38,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:38,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:38,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:38,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:38,547 INFO L124 PetriNetUnfolderBase]: 109/237 cut-off events. [2024-06-04 14:20:38,548 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-06-04 14:20:38,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 237 events. 109/237 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 953 event pairs, 28 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 924. Up to 139 conditions per place. [2024-06-04 14:20:38,549 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 32 selfloop transitions, 22 changer transitions 0/59 dead transitions. [2024-06-04 14:20:38,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 59 transitions, 496 flow [2024-06-04 14:20:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-04 14:20:38,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645161290322581 [2024-06-04 14:20:38,551 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 372 flow. Second operand 6 states and 105 transitions. [2024-06-04 14:20:38,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 59 transitions, 496 flow [2024-06-04 14:20:38,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 416 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-04 14:20:38,554 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 342 flow [2024-06-04 14:20:38,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=342, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-04 14:20:38,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 32 predicate places. [2024-06-04 14:20:38,555 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 342 flow [2024-06-04 14:20:38,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:38,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:38,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-04 14:20:38,555 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:38,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:38,556 INFO L85 PathProgramCache]: Analyzing trace with hash 591580353, now seen corresponding path program 1 times [2024-06-04 14:20:38,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:38,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217468309] [2024-06-04 14:20:38,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:38,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:38,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:38,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:38,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217468309] [2024-06-04 14:20:38,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217468309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:38,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:38,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:38,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142138930] [2024-06-04 14:20:38,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:38,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:38,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:38,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:38,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:38,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:38,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 342 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:38,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:38,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:38,727 INFO L124 PetriNetUnfolderBase]: 113/252 cut-off events. [2024-06-04 14:20:38,727 INFO L125 PetriNetUnfolderBase]: For 1478/1478 co-relation queries the response was YES. [2024-06-04 14:20:38,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 252 events. 113/252 cut-off events. For 1478/1478 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1020 event pairs, 26 based on Foata normal form. 2/250 useless extension candidates. Maximal degree in co-relation 947. Up to 173 conditions per place. [2024-06-04 14:20:38,729 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 43 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-04 14:20:38,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 478 flow [2024-06-04 14:20:38,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:38,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:38,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-04 14:20:38,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-04 14:20:38,731 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 342 flow. Second operand 6 states and 103 transitions. [2024-06-04 14:20:38,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 478 flow [2024-06-04 14:20:38,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 61 transitions, 419 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-04 14:20:38,734 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 321 flow [2024-06-04 14:20:38,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-06-04 14:20:38,734 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-04 14:20:38,734 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 321 flow [2024-06-04 14:20:38,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:38,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:38,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-04 14:20:38,735 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:38,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1066555069, now seen corresponding path program 2 times [2024-06-04 14:20:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:38,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906162882] [2024-06-04 14:20:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:38,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:38,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:38,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906162882] [2024-06-04 14:20:38,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906162882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:38,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:38,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-04 14:20:38,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750742813] [2024-06-04 14:20:38,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:38,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-04 14:20:38,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:38,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-04 14:20:38,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-04 14:20:38,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:38,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 321 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:38,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:38,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:38,881 INFO L124 PetriNetUnfolderBase]: 110/247 cut-off events. [2024-06-04 14:20:38,881 INFO L125 PetriNetUnfolderBase]: For 1412/1412 co-relation queries the response was YES. [2024-06-04 14:20:38,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 924 conditions, 247 events. 110/247 cut-off events. For 1412/1412 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 998 event pairs, 23 based on Foata normal form. 2/245 useless extension candidates. Maximal degree in co-relation 893. Up to 148 conditions per place. [2024-06-04 14:20:38,883 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-04 14:20:38,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 62 transitions, 455 flow [2024-06-04 14:20:38,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:38,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-04 14:20:38,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543010752688172 [2024-06-04 14:20:38,884 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 321 flow. Second operand 6 states and 101 transitions. [2024-06-04 14:20:38,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 62 transitions, 455 flow [2024-06-04 14:20:38,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 427 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-04 14:20:38,888 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 323 flow [2024-06-04 14:20:38,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=323, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2024-06-04 14:20:38,888 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-04 14:20:38,888 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 323 flow [2024-06-04 14:20:38,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:38,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:38,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:38,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-04 14:20:38,889 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:38,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:38,889 INFO L85 PathProgramCache]: Analyzing trace with hash -983267885, now seen corresponding path program 1 times [2024-06-04 14:20:38,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:38,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535853153] [2024-06-04 14:20:38,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:38,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:38,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:38,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:38,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535853153] [2024-06-04 14:20:38,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535853153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:38,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:38,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:38,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989937934] [2024-06-04 14:20:38,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:38,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:38,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:38,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:38,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:39,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:39,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 323 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:39,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:39,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:39,084 INFO L124 PetriNetUnfolderBase]: 121/271 cut-off events. [2024-06-04 14:20:39,085 INFO L125 PetriNetUnfolderBase]: For 1870/1870 co-relation queries the response was YES. [2024-06-04 14:20:39,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1044 conditions, 271 events. 121/271 cut-off events. For 1870/1870 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1120 event pairs, 9 based on Foata normal form. 2/271 useless extension candidates. Maximal degree in co-relation 1012. Up to 168 conditions per place. [2024-06-04 14:20:39,086 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 56 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2024-06-04 14:20:39,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 547 flow [2024-06-04 14:20:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-04 14:20:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-04 14:20:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-04 14:20:39,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-06-04 14:20:39,088 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 323 flow. Second operand 8 states and 134 transitions. [2024-06-04 14:20:39,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 547 flow [2024-06-04 14:20:39,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 73 transitions, 517 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-04 14:20:39,092 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 339 flow [2024-06-04 14:20:39,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=339, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-06-04 14:20:39,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-04 14:20:39,092 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 339 flow [2024-06-04 14:20:39,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:39,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:39,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-04 14:20:39,093 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:39,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash -75974135, now seen corresponding path program 2 times [2024-06-04 14:20:39,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:39,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212680117] [2024-06-04 14:20:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:39,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:39,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:39,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:39,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212680117] [2024-06-04 14:20:39,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212680117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:39,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:39,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:39,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309011348] [2024-06-04 14:20:39,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:39,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:39,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:39,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:39,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:39,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:39,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 339 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:39,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:39,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:39,281 INFO L124 PetriNetUnfolderBase]: 118/264 cut-off events. [2024-06-04 14:20:39,282 INFO L125 PetriNetUnfolderBase]: For 1793/1793 co-relation queries the response was YES. [2024-06-04 14:20:39,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007 conditions, 264 events. 118/264 cut-off events. For 1793/1793 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1084 event pairs, 19 based on Foata normal form. 2/264 useless extension candidates. Maximal degree in co-relation 974. Up to 192 conditions per place. [2024-06-04 14:20:39,283 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 55 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-04 14:20:39,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 70 transitions, 505 flow [2024-06-04 14:20:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:39,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-04 14:20:39,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483870967741935 [2024-06-04 14:20:39,285 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 339 flow. Second operand 7 states and 119 transitions. [2024-06-04 14:20:39,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 70 transitions, 505 flow [2024-06-04 14:20:39,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 479 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-04 14:20:39,289 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 337 flow [2024-06-04 14:20:39,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=337, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-06-04 14:20:39,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-04 14:20:39,289 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 337 flow [2024-06-04 14:20:39,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:39,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:39,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-04 14:20:39,290 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:39,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1536088181, now seen corresponding path program 3 times [2024-06-04 14:20:39,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:39,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600014667] [2024-06-04 14:20:39,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:39,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:39,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600014667] [2024-06-04 14:20:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600014667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:39,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:39,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:39,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422866685] [2024-06-04 14:20:39,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:39,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:39,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:39,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:39,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:39,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:39,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:39,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:39,481 INFO L124 PetriNetUnfolderBase]: 122/269 cut-off events. [2024-06-04 14:20:39,481 INFO L125 PetriNetUnfolderBase]: For 2056/2056 co-relation queries the response was YES. [2024-06-04 14:20:39,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 269 events. 122/269 cut-off events. For 2056/2056 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1112 event pairs, 25 based on Foata normal form. 2/266 useless extension candidates. Maximal degree in co-relation 1004. Up to 160 conditions per place. [2024-06-04 14:20:39,483 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 26 changer transitions 0/68 dead transitions. [2024-06-04 14:20:39,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 68 transitions, 501 flow [2024-06-04 14:20:39,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:39,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-04 14:20:39,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-04 14:20:39,484 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 337 flow. Second operand 7 states and 124 transitions. [2024-06-04 14:20:39,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 68 transitions, 501 flow [2024-06-04 14:20:39,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 68 transitions, 479 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-04 14:20:39,490 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 383 flow [2024-06-04 14:20:39,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-06-04 14:20:39,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-04 14:20:39,491 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 383 flow [2024-06-04 14:20:39,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:39,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:39,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-04 14:20:39,492 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:39,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:39,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2118692597, now seen corresponding path program 4 times [2024-06-04 14:20:39,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:39,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686174575] [2024-06-04 14:20:39,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:39,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:39,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:39,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686174575] [2024-06-04 14:20:39,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686174575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:39,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:39,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:39,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991875273] [2024-06-04 14:20:39,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:39,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:39,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:39,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:39,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:39,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:39,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:39,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:39,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:39,670 INFO L124 PetriNetUnfolderBase]: 131/289 cut-off events. [2024-06-04 14:20:39,671 INFO L125 PetriNetUnfolderBase]: For 3363/3363 co-relation queries the response was YES. [2024-06-04 14:20:39,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 289 events. 131/289 cut-off events. For 3363/3363 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1260 event pairs, 30 based on Foata normal form. 10/293 useless extension candidates. Maximal degree in co-relation 1065. Up to 151 conditions per place. [2024-06-04 14:20:39,672 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 22 changer transitions 4/68 dead transitions. [2024-06-04 14:20:39,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 543 flow [2024-06-04 14:20:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-04 14:20:39,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668202764976958 [2024-06-04 14:20:39,674 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 383 flow. Second operand 7 states and 123 transitions. [2024-06-04 14:20:39,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 68 transitions, 543 flow [2024-06-04 14:20:39,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 485 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-04 14:20:39,680 INFO L231 Difference]: Finished difference. Result has 75 places, 55 transitions, 368 flow [2024-06-04 14:20:39,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=368, PETRI_PLACES=75, PETRI_TRANSITIONS=55} [2024-06-04 14:20:39,681 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-04 14:20:39,681 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 55 transitions, 368 flow [2024-06-04 14:20:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:39,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:39,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-04 14:20:39,681 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:39,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash -757301936, now seen corresponding path program 1 times [2024-06-04 14:20:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:39,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974916278] [2024-06-04 14:20:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:39,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:39,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974916278] [2024-06-04 14:20:39,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974916278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:39,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:39,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908680165] [2024-06-04 14:20:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:39,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:39,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:39,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:39,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 55 transitions, 368 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:39,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:39,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:39,857 INFO L124 PetriNetUnfolderBase]: 155/349 cut-off events. [2024-06-04 14:20:39,857 INFO L125 PetriNetUnfolderBase]: For 4431/4431 co-relation queries the response was YES. [2024-06-04 14:20:39,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 349 events. 155/349 cut-off events. For 4431/4431 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1643 event pairs, 40 based on Foata normal form. 6/349 useless extension candidates. Maximal degree in co-relation 1334. Up to 126 conditions per place. [2024-06-04 14:20:39,859 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 40 selfloop transitions, 15 changer transitions 12/72 dead transitions. [2024-06-04 14:20:39,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 72 transitions, 586 flow [2024-06-04 14:20:39,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:39,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-04 14:20:39,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668202764976958 [2024-06-04 14:20:39,861 INFO L175 Difference]: Start difference. First operand has 75 places, 55 transitions, 368 flow. Second operand 7 states and 123 transitions. [2024-06-04 14:20:39,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 72 transitions, 586 flow [2024-06-04 14:20:39,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 530 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:20:39,870 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 327 flow [2024-06-04 14:20:39,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=327, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2024-06-04 14:20:39,870 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2024-06-04 14:20:39,870 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 327 flow [2024-06-04 14:20:39,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:39,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:39,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-04 14:20:39,871 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:39,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1460662900, now seen corresponding path program 2 times [2024-06-04 14:20:39,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:39,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998247827] [2024-06-04 14:20:39,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:39,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:39,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:39,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998247827] [2024-06-04 14:20:39,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998247827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:39,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:39,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:39,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879533959] [2024-06-04 14:20:39,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:39,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:39,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:39,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:39,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:39,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:39,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:39,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:39,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:39,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:40,040 INFO L124 PetriNetUnfolderBase]: 139/319 cut-off events. [2024-06-04 14:20:40,040 INFO L125 PetriNetUnfolderBase]: For 4686/4686 co-relation queries the response was YES. [2024-06-04 14:20:40,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1255 conditions, 319 events. 139/319 cut-off events. For 4686/4686 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1466 event pairs, 31 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 1218. Up to 126 conditions per place. [2024-06-04 14:20:40,042 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 39 selfloop transitions, 14 changer transitions 6/64 dead transitions. [2024-06-04 14:20:40,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 519 flow [2024-06-04 14:20:40,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:40,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:40,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-04 14:20:40,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591397849462365 [2024-06-04 14:20:40,043 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 327 flow. Second operand 6 states and 104 transitions. [2024-06-04 14:20:40,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 519 flow [2024-06-04 14:20:40,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 477 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-04 14:20:40,049 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 310 flow [2024-06-04 14:20:40,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=310, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2024-06-04 14:20:40,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 41 predicate places. [2024-06-04 14:20:40,050 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 310 flow [2024-06-04 14:20:40,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:40,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:40,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-04 14:20:40,051 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:40,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:40,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1458136446, now seen corresponding path program 3 times [2024-06-04 14:20:40,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:40,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243548520] [2024-06-04 14:20:40,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:40,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:40,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:40,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243548520] [2024-06-04 14:20:40,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243548520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:40,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:40,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:40,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021283343] [2024-06-04 14:20:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:40,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:40,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:40,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:40,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:40,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:40,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:40,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:40,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:40,233 INFO L124 PetriNetUnfolderBase]: 115/269 cut-off events. [2024-06-04 14:20:40,233 INFO L125 PetriNetUnfolderBase]: For 2848/2848 co-relation queries the response was YES. [2024-06-04 14:20:40,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 269 events. 115/269 cut-off events. For 2848/2848 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1176 event pairs, 21 based on Foata normal form. 8/272 useless extension candidates. Maximal degree in co-relation 920. Up to 140 conditions per place. [2024-06-04 14:20:40,235 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 31 selfloop transitions, 14 changer transitions 8/58 dead transitions. [2024-06-04 14:20:40,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 58 transitions, 440 flow [2024-06-04 14:20:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-04 14:20:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-04 14:20:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2024-06-04 14:20:40,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.553763440860215 [2024-06-04 14:20:40,236 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 310 flow. Second operand 6 states and 103 transitions. [2024-06-04 14:20:40,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 58 transitions, 440 flow [2024-06-04 14:20:40,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 408 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:20:40,241 INFO L231 Difference]: Finished difference. Result has 69 places, 45 transitions, 282 flow [2024-06-04 14:20:40,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=69, PETRI_TRANSITIONS=45} [2024-06-04 14:20:40,242 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-04 14:20:40,242 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 45 transitions, 282 flow [2024-06-04 14:20:40,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:40,242 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:40,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-04 14:20:40,243 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:40,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:40,243 INFO L85 PathProgramCache]: Analyzing trace with hash -9612512, now seen corresponding path program 4 times [2024-06-04 14:20:40,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:40,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507233968] [2024-06-04 14:20:40,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:40,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:40,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:40,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507233968] [2024-06-04 14:20:40,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507233968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:40,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:40,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:40,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719201603] [2024-06-04 14:20:40,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:40,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:40,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:40,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:40,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:40,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 45 transitions, 282 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:40,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:40,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:40,390 INFO L124 PetriNetUnfolderBase]: 105/246 cut-off events. [2024-06-04 14:20:40,391 INFO L125 PetriNetUnfolderBase]: For 2450/2450 co-relation queries the response was YES. [2024-06-04 14:20:40,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 880 conditions, 246 events. 105/246 cut-off events. For 2450/2450 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1028 event pairs, 28 based on Foata normal form. 8/251 useless extension candidates. Maximal degree in co-relation 846. Up to 131 conditions per place. [2024-06-04 14:20:40,392 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 25 selfloop transitions, 15 changer transitions 9/54 dead transitions. [2024-06-04 14:20:40,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 54 transitions, 406 flow [2024-06-04 14:20:40,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-04 14:20:40,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5345622119815668 [2024-06-04 14:20:40,393 INFO L175 Difference]: Start difference. First operand has 69 places, 45 transitions, 282 flow. Second operand 7 states and 116 transitions. [2024-06-04 14:20:40,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 54 transitions, 406 flow [2024-06-04 14:20:40,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 355 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-04 14:20:40,397 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 249 flow [2024-06-04 14:20:40,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=249, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2024-06-04 14:20:40,398 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-04 14:20:40,398 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 249 flow [2024-06-04 14:20:40,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:40,398 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:40,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-04 14:20:40,399 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:40,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:40,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1988000, now seen corresponding path program 1 times [2024-06-04 14:20:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337116071] [2024-06-04 14:20:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:40,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:40,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:40,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337116071] [2024-06-04 14:20:40,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337116071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:40,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:40,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:40,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597838754] [2024-06-04 14:20:40,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:40,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:40,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:40,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:40,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:40,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:40,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:40,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:40,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:40,566 INFO L124 PetriNetUnfolderBase]: 118/281 cut-off events. [2024-06-04 14:20:40,566 INFO L125 PetriNetUnfolderBase]: For 3063/3063 co-relation queries the response was YES. [2024-06-04 14:20:40,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 281 events. 118/281 cut-off events. For 3063/3063 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1258 event pairs, 36 based on Foata normal form. 6/284 useless extension candidates. Maximal degree in co-relation 994. Up to 111 conditions per place. [2024-06-04 14:20:40,567 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 29 selfloop transitions, 14 changer transitions 7/55 dead transitions. [2024-06-04 14:20:40,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 55 transitions, 417 flow [2024-06-04 14:20:40,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:40,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-04 14:20:40,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543778801843318 [2024-06-04 14:20:40,568 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 249 flow. Second operand 7 states and 118 transitions. [2024-06-04 14:20:40,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 55 transitions, 417 flow [2024-06-04 14:20:40,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 379 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-04 14:20:40,574 INFO L231 Difference]: Finished difference. Result has 63 places, 39 transitions, 229 flow [2024-06-04 14:20:40,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=229, PETRI_PLACES=63, PETRI_TRANSITIONS=39} [2024-06-04 14:20:40,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-04 14:20:40,575 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 39 transitions, 229 flow [2024-06-04 14:20:40,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:40,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:40,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-04 14:20:40,576 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:40,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:40,576 INFO L85 PathProgramCache]: Analyzing trace with hash -208908350, now seen corresponding path program 2 times [2024-06-04 14:20:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:40,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000719299] [2024-06-04 14:20:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:40,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:40,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:40,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000719299] [2024-06-04 14:20:40,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000719299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:40,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:40,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:40,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80304471] [2024-06-04 14:20:40,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:40,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:40,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:40,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:40,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:40,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:40,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 39 transitions, 229 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:40,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:40,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:40,723 INFO L124 PetriNetUnfolderBase]: 91/220 cut-off events. [2024-06-04 14:20:40,723 INFO L125 PetriNetUnfolderBase]: For 2030/2030 co-relation queries the response was YES. [2024-06-04 14:20:40,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 741 conditions, 220 events. 91/220 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 900 event pairs, 30 based on Foata normal form. 8/225 useless extension candidates. Maximal degree in co-relation 710. Up to 117 conditions per place. [2024-06-04 14:20:40,725 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 24 selfloop transitions, 9 changer transitions 10/48 dead transitions. [2024-06-04 14:20:40,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 48 transitions, 339 flow [2024-06-04 14:20:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:40,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-04 14:20:40,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207373271889401 [2024-06-04 14:20:40,726 INFO L175 Difference]: Start difference. First operand has 63 places, 39 transitions, 229 flow. Second operand 7 states and 113 transitions. [2024-06-04 14:20:40,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 48 transitions, 339 flow [2024-06-04 14:20:40,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 48 transitions, 309 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-04 14:20:40,729 INFO L231 Difference]: Finished difference. Result has 63 places, 35 transitions, 197 flow [2024-06-04 14:20:40,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=63, PETRI_TRANSITIONS=35} [2024-06-04 14:20:40,730 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-04 14:20:40,730 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 35 transitions, 197 flow [2024-06-04 14:20:40,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:40,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:40,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-04 14:20:40,730 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:40,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:40,731 INFO L85 PathProgramCache]: Analyzing trace with hash -209062172, now seen corresponding path program 5 times [2024-06-04 14:20:40,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:40,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819234089] [2024-06-04 14:20:40,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:40,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:40,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:40,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819234089] [2024-06-04 14:20:40,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819234089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:40,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833658266] [2024-06-04 14:20:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:40,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:40,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:40,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:40,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:40,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 35 transitions, 197 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:40,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:40,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:40,862 INFO L124 PetriNetUnfolderBase]: 73/190 cut-off events. [2024-06-04 14:20:40,863 INFO L125 PetriNetUnfolderBase]: For 1515/1515 co-relation queries the response was YES. [2024-06-04 14:20:40,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 190 events. 73/190 cut-off events. For 1515/1515 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 720 event pairs, 23 based on Foata normal form. 6/193 useless extension candidates. Maximal degree in co-relation 580. Up to 62 conditions per place. [2024-06-04 14:20:40,864 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 18 selfloop transitions, 4 changer transitions 18/45 dead transitions. [2024-06-04 14:20:40,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 45 transitions, 299 flow [2024-06-04 14:20:40,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:40,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2024-06-04 14:20:40,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.511520737327189 [2024-06-04 14:20:40,865 INFO L175 Difference]: Start difference. First operand has 63 places, 35 transitions, 197 flow. Second operand 7 states and 111 transitions. [2024-06-04 14:20:40,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 45 transitions, 299 flow [2024-06-04 14:20:40,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 45 transitions, 277 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-04 14:20:40,866 INFO L231 Difference]: Finished difference. Result has 61 places, 25 transitions, 127 flow [2024-06-04 14:20:40,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=127, PETRI_PLACES=61, PETRI_TRANSITIONS=25} [2024-06-04 14:20:40,867 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-04 14:20:40,867 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 25 transitions, 127 flow [2024-06-04 14:20:40,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:40,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:40,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:40,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-04 14:20:40,868 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:40,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:40,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1573048416, now seen corresponding path program 3 times [2024-06-04 14:20:40,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:40,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029715220] [2024-06-04 14:20:40,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:40,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:40,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029715220] [2024-06-04 14:20:40,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029715220] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:40,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:40,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:40,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755944033] [2024-06-04 14:20:40,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:40,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:40,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:40,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:41,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:41,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 25 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:41,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:41,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:41,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:41,053 INFO L124 PetriNetUnfolderBase]: 42/112 cut-off events. [2024-06-04 14:20:41,053 INFO L125 PetriNetUnfolderBase]: For 1248/1248 co-relation queries the response was YES. [2024-06-04 14:20:41,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 384 conditions, 112 events. 42/112 cut-off events. For 1248/1248 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 330 event pairs, 15 based on Foata normal form. 6/115 useless extension candidates. Maximal degree in co-relation 354. Up to 52 conditions per place. [2024-06-04 14:20:41,054 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 16 selfloop transitions, 3 changer transitions 10/34 dead transitions. [2024-06-04 14:20:41,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 34 transitions, 207 flow [2024-06-04 14:20:41,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:41,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:41,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 107 transitions. [2024-06-04 14:20:41,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2024-06-04 14:20:41,055 INFO L175 Difference]: Start difference. First operand has 61 places, 25 transitions, 127 flow. Second operand 7 states and 107 transitions. [2024-06-04 14:20:41,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 34 transitions, 207 flow [2024-06-04 14:20:41,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 34 transitions, 176 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-04 14:20:41,056 INFO L231 Difference]: Finished difference. Result has 47 places, 22 transitions, 90 flow [2024-06-04 14:20:41,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=90, PETRI_PLACES=47, PETRI_TRANSITIONS=22} [2024-06-04 14:20:41,059 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-04 14:20:41,059 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 22 transitions, 90 flow [2024-06-04 14:20:41,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:41,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-04 14:20:41,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:41,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-04 14:20:41,060 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-04 14:20:41,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-04 14:20:41,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1537750180, now seen corresponding path program 4 times [2024-06-04 14:20:41,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-04 14:20:41,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86563424] [2024-06-04 14:20:41,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-04 14:20:41,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-04 14:20:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-04 14:20:41,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-04 14:20:41,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-04 14:20:41,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86563424] [2024-06-04 14:20:41,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86563424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-04 14:20:41,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-04 14:20:41,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-04 14:20:41,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060189337] [2024-06-04 14:20:41,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-04 14:20:41,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-04 14:20:41,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-04 14:20:41,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-04 14:20:41,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-04 14:20:41,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 31 [2024-06-04 14:20:41,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 22 transitions, 90 flow. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:41,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-04 14:20:41,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 31 [2024-06-04 14:20:41,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-04 14:20:41,207 INFO L124 PetriNetUnfolderBase]: 20/64 cut-off events. [2024-06-04 14:20:41,208 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-06-04 14:20:41,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 64 events. 20/64 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 151. Up to 24 conditions per place. [2024-06-04 14:20:41,208 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2024-06-04 14:20:41,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 27 transitions, 126 flow [2024-06-04 14:20:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-04 14:20:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-04 14:20:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 100 transitions. [2024-06-04 14:20:41,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4608294930875576 [2024-06-04 14:20:41,209 INFO L175 Difference]: Start difference. First operand has 47 places, 22 transitions, 90 flow. Second operand 7 states and 100 transitions. [2024-06-04 14:20:41,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 27 transitions, 126 flow [2024-06-04 14:20:41,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 104 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-04 14:20:41,210 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2024-06-04 14:20:41,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2024-06-04 14:20:41,212 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2024-06-04 14:20:41,212 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2024-06-04 14:20:41,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-04 14:20:41,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-04 14:20:41,214 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-04 14:20:41,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-04 14:20:41,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-04 14:20:41,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-04 14:20:41,215 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-04 14:20:41,217 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-04 14:20:41,217 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-04 14:20:41,220 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-04 14:20:41,220 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-04 14:20:41,221 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.06 02:20:41 BasicIcfg [2024-06-04 14:20:41,221 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-04 14:20:41,221 INFO L158 Benchmark]: Toolchain (without parser) took 6714.71ms. Allocated memory was 251.7MB in the beginning and 465.6MB in the end (delta: 213.9MB). Free memory was 173.4MB in the beginning and 351.6MB in the end (delta: -178.2MB). Peak memory consumption was 38.8MB. Max. memory is 16.1GB. [2024-06-04 14:20:41,221 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:20:41,221 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 251.7MB. Free memory is still 224.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:20:41,222 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.47ms. Allocated memory is still 251.7MB. Free memory was 173.4MB in the beginning and 148.1MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-04 14:20:41,222 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.91ms. Allocated memory is still 251.7MB. Free memory was 147.6MB in the beginning and 146.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:20:41,222 INFO L158 Benchmark]: Boogie Preprocessor took 53.67ms. Allocated memory is still 251.7MB. Free memory was 146.0MB in the beginning and 143.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-04 14:20:41,223 INFO L158 Benchmark]: RCFGBuilder took 367.50ms. Allocated memory is still 251.7MB. Free memory was 143.4MB in the beginning and 121.5MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-06-04 14:20:41,223 INFO L158 Benchmark]: TraceAbstraction took 5822.21ms. Allocated memory was 251.7MB in the beginning and 465.6MB in the end (delta: 213.9MB). Free memory was 121.0MB in the beginning and 351.6MB in the end (delta: -230.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-04 14:20:41,224 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 105.3MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.11ms. Allocated memory is still 251.7MB. Free memory is still 224.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.47ms. Allocated memory is still 251.7MB. Free memory was 173.4MB in the beginning and 148.1MB in the end (delta: 25.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.91ms. Allocated memory is still 251.7MB. Free memory was 147.6MB in the beginning and 146.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 53.67ms. Allocated memory is still 251.7MB. Free memory was 146.0MB in the beginning and 143.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 367.50ms. Allocated memory is still 251.7MB. Free memory was 143.4MB in the beginning and 121.5MB in the end (delta: 22.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5822.21ms. Allocated memory was 251.7MB in the beginning and 465.6MB in the end (delta: 213.9MB). Free memory was 121.0MB in the beginning and 351.6MB in the end (delta: -230.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 764]: 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 5 procedures, 49 locations, 4 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: 5.7s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1136 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 797 mSDsluCounter, 346 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 215 mSDsCounter, 119 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3371 IncrementalHoareTripleChecker+Invalid, 3490 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 119 mSolverCounterUnsat, 131 mSDtfsCounter, 3371 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 126 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=383occurred in iteration=19, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 444 NumberOfCodeBlocks, 444 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 2985 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 29 InterpolantComputations, 29 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-04 14:20:41,263 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