./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.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe033_tso.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/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-7724a2d-m [2024-06-28 02:39:02,783 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:39:02,858 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:39:02,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:39:02,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:39:02,887 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:39:02,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:39:02,888 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:39:02,888 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:39:02,891 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:39:02,892 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:39:02,892 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:39:02,893 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:39:02,894 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:39:02,894 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:39:02,894 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:39:02,894 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:39:02,894 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:39:02,895 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:39:02,895 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:39:02,895 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:39:02,895 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:39:02,895 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:39:02,896 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:39:02,896 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:39:02,896 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:39:02,896 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:39:02,896 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:39:02,897 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:39:02,897 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:39:02,898 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:39:02,898 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:39:02,898 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:39:02,898 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:39:02,899 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:39:02,899 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:39:02,899 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:39:02,899 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:39:02,899 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:39:02,899 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:39:02,900 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:39:02,900 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:39:02,900 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:39:02,900 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:39:03,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:39:03,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:39:03,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:39:03,129 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:39:03,129 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:39:03,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/safe033_tso.yml/witness.yml [2024-06-28 02:39:03,201 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:39:03,202 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:39:03,203 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-28 02:39:04,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:39:04,391 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:39:04,392 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe033_tso.i [2024-06-28 02:39:04,403 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64990f0b4/cd87e13416e449e08828a732923295f5/FLAG09ed31b70 [2024-06-28 02:39:04,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64990f0b4/cd87e13416e449e08828a732923295f5 [2024-06-28 02:39:04,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:39:04,419 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:39:04,420 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:39:04,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:39:04,423 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:39:04,424 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:39:03" (1/2) ... [2024-06-28 02:39:04,425 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59454502 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:39:04, skipping insertion in model container [2024-06-28 02:39:04,425 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:39:03" (1/2) ... [2024-06-28 02:39:04,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4efcc7b9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:39:04, skipping insertion in model container [2024-06-28 02:39:04,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:39:04" (2/2) ... [2024-06-28 02:39:04,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59454502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04, skipping insertion in model container [2024-06-28 02:39:04,426 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:39:04" (2/2) ... [2024-06-28 02:39:04,427 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:39:04,458 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:39:04,459 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] ((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:39:04,459 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] ((((! multithreaded || ((y == 0 || y == 1) || y == 2)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (((0 <= __unbuffered_cnt && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (x == 0 || x == 1)) && ((y == 0 || y == 1) || y == 2)))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 02:39:04,459 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:39:04,459 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-28 02:39:04,494 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:39:04,752 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:39:04,759 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:39:04,850 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:39:04,881 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:39:04,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04 WrapperNode [2024-06-28 02:39:04,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:39:04,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:39:04,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:39:04,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:39:04,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,901 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,916 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 56 [2024-06-28 02:39:04,918 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:39:04,919 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:39:04,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:39:04,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:39:04,927 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,927 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,929 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,938 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]. [2024-06-28 02:39:04,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,938 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,952 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,954 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,955 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:39:04,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:39:04,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:39:04,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:39:04,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (1/1) ... [2024-06-28 02:39:04,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:39:04,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:39:04,999 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:39:05,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:39:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:39:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:39:05,065 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:39:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:39:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:39:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:39:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:39:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:39:05,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:39:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:39:05,068 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:39:05,198 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:39:05,199 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:39:05,310 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:39:05,311 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:39:05,365 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:39:05,369 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:39:05,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:39:05 BoogieIcfgContainer [2024-06-28 02:39:05,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:39:05,370 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:39:05,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:39:05,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:39:05,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:39:03" (1/4) ... [2024-06-28 02:39:05,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1995bb3a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:39:05, skipping insertion in model container [2024-06-28 02:39:05,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:39:04" (2/4) ... [2024-06-28 02:39:05,375 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1995bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:39:05, skipping insertion in model container [2024-06-28 02:39:05,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:39:04" (3/4) ... [2024-06-28 02:39:05,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1995bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:39:05, skipping insertion in model container [2024-06-28 02:39:05,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:39:05" (4/4) ... [2024-06-28 02:39:05,377 INFO L112 eAbstractionObserver]: Analyzing ICFG safe033_tso.i [2024-06-28 02:39:05,389 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:39:05,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:39:05,390 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:39:05,432 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:39:05,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 02:39:05,490 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-28 02:39:05,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:39:05,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 28 events. 0/28 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. 0/26 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:39:05,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-28 02:39:05,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-28 02:39:05,506 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:39:05,511 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;@682df588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:39:05,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:39:05,516 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:39:05,516 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:39:05,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:39:05,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:05,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:39:05,517 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)] === [2024-06-28 02:39:05,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:05,521 INFO L85 PathProgramCache]: Analyzing trace with hash 188073949, now seen corresponding path program 1 times [2024-06-28 02:39:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:05,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178450970] [2024-06-28 02:39:05,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:05,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:05,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:05,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:05,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178450970] [2024-06-28 02:39:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178450970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:05,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:39:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580336804] [2024-06-28 02:39:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:05,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:39:05,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:39:05,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:39:05,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-06-28 02:39:05,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:05,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:05,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-06-28 02:39:05,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:05,910 INFO L124 PetriNetUnfolderBase]: 83/182 cut-off events. [2024-06-28 02:39:05,910 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-28 02:39:05,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 182 events. 83/182 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 694 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. [2024-06-28 02:39:05,914 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 18 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-28 02:39:05,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 107 flow [2024-06-28 02:39:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:39:05,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:39:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2024-06-28 02:39:05,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2024-06-28 02:39:05,928 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 62 transitions. [2024-06-28 02:39:05,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 107 flow [2024-06-28 02:39:05,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:39:05,932 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-28 02:39:05,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=30, PETRI_TRANSITIONS=24} [2024-06-28 02:39:05,936 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-28 02:39:05,936 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-28 02:39:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:05,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:05,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:39:05,937 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)] === [2024-06-28 02:39:05,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 350470908, now seen corresponding path program 1 times [2024-06-28 02:39:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:05,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877706605] [2024-06-28 02:39:05,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877706605] [2024-06-28 02:39:06,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877706605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:06,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:06,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:39:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508909443] [2024-06-28 02:39:06,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:06,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:39:06,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:06,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:39:06,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:39:06,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-06-28 02:39:06,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:06,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-06-28 02:39:06,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:06,142 INFO L124 PetriNetUnfolderBase]: 80/177 cut-off events. [2024-06-28 02:39:06,144 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-28 02:39:06,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 177 events. 80/177 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 669 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. [2024-06-28 02:39:06,146 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 22 selfloop transitions, 5 changer transitions 0/34 dead transitions. [2024-06-28 02:39:06,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 34 transitions, 149 flow [2024-06-28 02:39:06,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:39:06,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:39:06,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2024-06-28 02:39:06,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-06-28 02:39:06,149 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 81 transitions. [2024-06-28 02:39:06,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 34 transitions, 149 flow [2024-06-28 02:39:06,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 34 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:39:06,152 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 93 flow [2024-06-28 02:39:06,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2024-06-28 02:39:06,153 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 4 predicate places. [2024-06-28 02:39:06,153 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 93 flow [2024-06-28 02:39:06,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:06,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:06,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:39:06,154 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)] === [2024-06-28 02:39:06,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash -944611366, now seen corresponding path program 1 times [2024-06-28 02:39:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:06,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123553135] [2024-06-28 02:39:06,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:06,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:06,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:06,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:06,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123553135] [2024-06-28 02:39:06,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123553135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:06,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:06,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:39:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474782058] [2024-06-28 02:39:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:06,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:39:06,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:06,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:39:06,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:39:06,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:06,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 93 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:06,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:06,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:06,331 INFO L124 PetriNetUnfolderBase]: 101/209 cut-off events. [2024-06-28 02:39:06,332 INFO L125 PetriNetUnfolderBase]: For 121/121 co-relation queries the response was YES. [2024-06-28 02:39:06,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 209 events. 101/209 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 775 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. [2024-06-28 02:39:06,336 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 22 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-28 02:39:06,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 33 transitions, 165 flow [2024-06-28 02:39:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:39:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:39:06,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2024-06-28 02:39:06,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 02:39:06,340 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 93 flow. Second operand 4 states and 74 transitions. [2024-06-28 02:39:06,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 33 transitions, 165 flow [2024-06-28 02:39:06,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 156 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:39:06,344 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 109 flow [2024-06-28 02:39:06,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-28 02:39:06,345 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-06-28 02:39:06,345 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 109 flow [2024-06-28 02:39:06,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:06,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:39:06,346 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)] === [2024-06-28 02:39:06,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1962259378, now seen corresponding path program 1 times [2024-06-28 02:39:06,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:06,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382896467] [2024-06-28 02:39:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:06,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:06,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382896467] [2024-06-28 02:39:06,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382896467] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:06,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:06,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:06,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597683878] [2024-06-28 02:39:06,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:06,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:06,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:06,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:06,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:06,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:06,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 109 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) [2024-06-28 02:39:06,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:06,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:06,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:06,597 INFO L124 PetriNetUnfolderBase]: 97/205 cut-off events. [2024-06-28 02:39:06,599 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-28 02:39:06,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 205 events. 97/205 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 744 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. [2024-06-28 02:39:06,600 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 29 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-28 02:39:06,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 217 flow [2024-06-28 02:39:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 02:39:06,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-28 02:39:06,602 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 109 flow. Second operand 6 states and 109 transitions. [2024-06-28 02:39:06,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 217 flow [2024-06-28 02:39:06,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:39:06,603 INFO L231 Difference]: Finished difference. Result has 39 places, 29 transitions, 125 flow [2024-06-28 02:39:06,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=29} [2024-06-28 02:39:06,604 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-28 02:39:06,604 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 29 transitions, 125 flow [2024-06-28 02:39:06,604 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) [2024-06-28 02:39:06,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:06,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:06,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:39:06,605 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)] === [2024-06-28 02:39:06,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:06,605 INFO L85 PathProgramCache]: Analyzing trace with hash 763944755, now seen corresponding path program 1 times [2024-06-28 02:39:06,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:06,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483051249] [2024-06-28 02:39:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:06,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:06,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:06,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:06,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483051249] [2024-06-28 02:39:06,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483051249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:06,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:06,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:39:06,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502598695] [2024-06-28 02:39:06,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:06,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:39:06,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:06,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:39:06,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:39:06,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:06,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:06,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:06,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:06,716 INFO L124 PetriNetUnfolderBase]: 99/209 cut-off events. [2024-06-28 02:39:06,716 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2024-06-28 02:39:06,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 615 conditions, 209 events. 99/209 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 779 event pairs, 26 based on Foata normal form. 2/209 useless extension candidates. Maximal degree in co-relation 598. Up to 152 conditions per place. [2024-06-28 02:39:06,718 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-28 02:39:06,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 243 flow [2024-06-28 02:39:06,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:39:06,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:39:06,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-28 02:39:06,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-06-28 02:39:06,719 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 125 flow. Second operand 5 states and 93 transitions. [2024-06-28 02:39:06,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 243 flow [2024-06-28 02:39:06,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 227 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:39:06,721 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 175 flow [2024-06-28 02:39:06,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-06-28 02:39:06,721 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-06-28 02:39:06,721 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 175 flow [2024-06-28 02:39:06,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:06,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:06,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:39:06,722 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)] === [2024-06-28 02:39:06,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:06,722 INFO L85 PathProgramCache]: Analyzing trace with hash -136101703, now seen corresponding path program 1 times [2024-06-28 02:39:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:06,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065413552] [2024-06-28 02:39:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:06,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:06,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:06,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065413552] [2024-06-28 02:39:06,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065413552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:06,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:06,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:39:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070582980] [2024-06-28 02:39:06,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:06,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:39:06,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:39:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:39:06,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:06,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:06,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:06,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:06,872 INFO L124 PetriNetUnfolderBase]: 102/218 cut-off events. [2024-06-28 02:39:06,872 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2024-06-28 02:39:06,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 218 events. 102/218 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 816 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. [2024-06-28 02:39:06,873 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 28 selfloop transitions, 13 changer transitions 0/47 dead transitions. [2024-06-28 02:39:06,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 47 transitions, 306 flow [2024-06-28 02:39:06,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:39:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:39:06,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2024-06-28 02:39:06,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6466666666666666 [2024-06-28 02:39:06,874 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 175 flow. Second operand 5 states and 97 transitions. [2024-06-28 02:39:06,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 47 transitions, 306 flow [2024-06-28 02:39:06,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 47 transitions, 287 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-06-28 02:39:06,876 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 202 flow [2024-06-28 02:39:06,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=202, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2024-06-28 02:39:06,877 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-28 02:39:06,877 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 202 flow [2024-06-28 02:39:06,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:06,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:06,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:39:06,878 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)] === [2024-06-28 02:39:06,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1514268919, now seen corresponding path program 2 times [2024-06-28 02:39:06,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:06,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072968605] [2024-06-28 02:39:06,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:06,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:06,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072968605] [2024-06-28 02:39:06,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072968605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:06,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:06,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:39:06,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963364188] [2024-06-28 02:39:06,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:06,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:39:06,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:06,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:39:06,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:39:06,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:06,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 202 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:06,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:06,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:06,989 INFO L124 PetriNetUnfolderBase]: 97/207 cut-off events. [2024-06-28 02:39:06,989 INFO L125 PetriNetUnfolderBase]: For 494/494 co-relation queries the response was YES. [2024-06-28 02:39:06,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 710 conditions, 207 events. 97/207 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 758 event pairs, 27 based on Foata normal form. 2/207 useless extension candidates. Maximal degree in co-relation 690. Up to 149 conditions per place. [2024-06-28 02:39:06,990 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 12 changer transitions 0/43 dead transitions. [2024-06-28 02:39:06,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 290 flow [2024-06-28 02:39:06,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:39:06,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:39:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2024-06-28 02:39:06,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2024-06-28 02:39:06,991 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 202 flow. Second operand 5 states and 92 transitions. [2024-06-28 02:39:06,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 290 flow [2024-06-28 02:39:06,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 271 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-28 02:39:06,993 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 214 flow [2024-06-28 02:39:06,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-28 02:39:06,994 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-28 02:39:06,994 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 214 flow [2024-06-28 02:39:06,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:06,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:06,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:06,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:39:06,995 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)] === [2024-06-28 02:39:06,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:06,995 INFO L85 PathProgramCache]: Analyzing trace with hash -288476910, now seen corresponding path program 1 times [2024-06-28 02:39:06,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:06,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314803269] [2024-06-28 02:39:06,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:06,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:07,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:07,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:07,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314803269] [2024-06-28 02:39:07,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314803269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:07,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:07,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:07,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845312806] [2024-06-28 02:39:07,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:07,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:07,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:07,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:07,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:07,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:07,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:07,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:07,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:07,136 INFO L124 PetriNetUnfolderBase]: 98/210 cut-off events. [2024-06-28 02:39:07,136 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2024-06-28 02:39:07,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727 conditions, 210 events. 98/210 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 777 event pairs, 26 based on Foata normal form. 4/212 useless extension candidates. Maximal degree in co-relation 706. Up to 140 conditions per place. [2024-06-28 02:39:07,138 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 15 changer transitions 0/46 dead transitions. [2024-06-28 02:39:07,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 316 flow [2024-06-28 02:39:07,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:07,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 02:39:07,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-28 02:39:07,139 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 214 flow. Second operand 6 states and 107 transitions. [2024-06-28 02:39:07,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 316 flow [2024-06-28 02:39:07,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-28 02:39:07,142 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 219 flow [2024-06-28 02:39:07,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-28 02:39:07,142 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2024-06-28 02:39:07,142 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 219 flow [2024-06-28 02:39:07,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:07,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:07,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:39:07,143 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)] === [2024-06-28 02:39:07,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1944882118, now seen corresponding path program 1 times [2024-06-28 02:39:07,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:07,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064974922] [2024-06-28 02:39:07,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:07,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:07,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:07,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:07,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064974922] [2024-06-28 02:39:07,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064974922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:07,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:07,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:07,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975359133] [2024-06-28 02:39:07,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:07,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:07,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:07,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:07,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:07,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:07,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:07,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:07,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:07,337 INFO L124 PetriNetUnfolderBase]: 101/220 cut-off events. [2024-06-28 02:39:07,337 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2024-06-28 02:39:07,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 776 conditions, 220 events. 101/220 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 819 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. [2024-06-28 02:39:07,339 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 38 selfloop transitions, 9 changer transitions 0/53 dead transitions. [2024-06-28 02:39:07,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 355 flow [2024-06-28 02:39:07,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:07,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 02:39:07,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-28 02:39:07,340 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 219 flow. Second operand 6 states and 109 transitions. [2024-06-28 02:39:07,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 355 flow [2024-06-28 02:39:07,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 320 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:39:07,343 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 221 flow [2024-06-28 02:39:07,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-06-28 02:39:07,343 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-28 02:39:07,343 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 221 flow [2024-06-28 02:39:07,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:07,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:07,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:39:07,344 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)] === [2024-06-28 02:39:07,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:07,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1822240320, now seen corresponding path program 2 times [2024-06-28 02:39:07,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:07,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798457934] [2024-06-28 02:39:07,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:07,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:07,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:07,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:07,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798457934] [2024-06-28 02:39:07,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798457934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:07,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:07,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:07,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726869488] [2024-06-28 02:39:07,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:07,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:07,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:07,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:07,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:07,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:07,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 221 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:07,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:07,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:07,507 INFO L124 PetriNetUnfolderBase]: 109/235 cut-off events. [2024-06-28 02:39:07,507 INFO L125 PetriNetUnfolderBase]: For 849/849 co-relation queries the response was YES. [2024-06-28 02:39:07,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 846 conditions, 235 events. 109/235 cut-off events. For 849/849 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 915 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. [2024-06-28 02:39:07,509 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 32 selfloop transitions, 21 changer transitions 0/59 dead transitions. [2024-06-28 02:39:07,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 433 flow [2024-06-28 02:39:07,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:07,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-06-28 02:39:07,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-06-28 02:39:07,510 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 221 flow. Second operand 6 states and 116 transitions. [2024-06-28 02:39:07,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 433 flow [2024-06-28 02:39:07,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 412 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:39:07,513 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 295 flow [2024-06-28 02:39:07,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2024-06-28 02:39:07,514 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-28 02:39:07,514 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 295 flow [2024-06-28 02:39:07,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:07,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:39:07,515 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)] === [2024-06-28 02:39:07,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 421322210, now seen corresponding path program 3 times [2024-06-28 02:39:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:07,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264173284] [2024-06-28 02:39:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:07,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:07,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:07,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264173284] [2024-06-28 02:39:07,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264173284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:07,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:07,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:07,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773809857] [2024-06-28 02:39:07,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:07,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:07,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:07,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:07,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:07,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:07,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 295 flow. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:07,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:07,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:07,636 INFO L124 PetriNetUnfolderBase]: 105/225 cut-off events. [2024-06-28 02:39:07,637 INFO L125 PetriNetUnfolderBase]: For 1039/1039 co-relation queries the response was YES. [2024-06-28 02:39:07,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863 conditions, 225 events. 105/225 cut-off events. For 1039/1039 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 880 event pairs, 27 based on Foata normal form. 2/224 useless extension candidates. Maximal degree in co-relation 839. Up to 133 conditions per place. [2024-06-28 02:39:07,638 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 31 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-28 02:39:07,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 55 transitions, 431 flow [2024-06-28 02:39:07,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:07,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:07,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 02:39:07,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 02:39:07,639 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 295 flow. Second operand 6 states and 111 transitions. [2024-06-28 02:39:07,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 55 transitions, 431 flow [2024-06-28 02:39:07,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 407 flow, removed 9 selfloop flow, removed 1 redundant places. [2024-06-28 02:39:07,642 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 313 flow [2024-06-28 02:39:07,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=313, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-06-28 02:39:07,643 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-28 02:39:07,643 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 313 flow [2024-06-28 02:39:07,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:07,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:07,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:39:07,643 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)] === [2024-06-28 02:39:07,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 497620957, now seen corresponding path program 1 times [2024-06-28 02:39:07,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:07,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598035393] [2024-06-28 02:39:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:07,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:07,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:07,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:07,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598035393] [2024-06-28 02:39:07,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598035393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:07,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:07,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:07,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503149118] [2024-06-28 02:39:07,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:07,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:07,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:07,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:07,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:07,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:07,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 313 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:07,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:07,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:07,811 INFO L124 PetriNetUnfolderBase]: 108/234 cut-off events. [2024-06-28 02:39:07,811 INFO L125 PetriNetUnfolderBase]: For 1223/1223 co-relation queries the response was YES. [2024-06-28 02:39:07,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 932 conditions, 234 events. 108/234 cut-off events. For 1223/1223 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 939 event pairs, 28 based on Foata normal form. 1/232 useless extension candidates. Maximal degree in co-relation 905. Up to 154 conditions per place. [2024-06-28 02:39:07,813 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 31 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-28 02:39:07,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 443 flow [2024-06-28 02:39:07,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:39:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:39:07,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-06-28 02:39:07,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-06-28 02:39:07,814 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 313 flow. Second operand 5 states and 95 transitions. [2024-06-28 02:39:07,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 443 flow [2024-06-28 02:39:07,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 55 transitions, 395 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:39:07,819 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 334 flow [2024-06-28 02:39:07,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2024-06-28 02:39:07,821 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2024-06-28 02:39:07,821 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 334 flow [2024-06-28 02:39:07,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:07,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:07,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:39:07,821 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)] === [2024-06-28 02:39:07,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:07,822 INFO L85 PathProgramCache]: Analyzing trace with hash -153912191, now seen corresponding path program 2 times [2024-06-28 02:39:07,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:07,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940485914] [2024-06-28 02:39:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:07,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:07,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:07,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:07,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940485914] [2024-06-28 02:39:07,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940485914] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:07,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:07,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:07,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855742027] [2024-06-28 02:39:07,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:07,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:07,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:07,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:07,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:07,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:07,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 334 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:07,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:07,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:07,958 INFO L124 PetriNetUnfolderBase]: 111/239 cut-off events. [2024-06-28 02:39:07,958 INFO L125 PetriNetUnfolderBase]: For 1373/1373 co-relation queries the response was YES. [2024-06-28 02:39:07,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 239 events. 111/239 cut-off events. For 1373/1373 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 964 event pairs, 28 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 935. Up to 141 conditions per place. [2024-06-28 02:39:07,960 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 28 selfloop transitions, 25 changer transitions 0/59 dead transitions. [2024-06-28 02:39:07,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 502 flow [2024-06-28 02:39:07,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:07,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:07,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 111 transitions. [2024-06-28 02:39:07,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6166666666666667 [2024-06-28 02:39:07,961 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 334 flow. Second operand 6 states and 111 transitions. [2024-06-28 02:39:07,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 502 flow [2024-06-28 02:39:07,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 461 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 02:39:07,964 INFO L231 Difference]: Finished difference. Result has 60 places, 51 transitions, 370 flow [2024-06-28 02:39:07,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=60, PETRI_TRANSITIONS=51} [2024-06-28 02:39:07,965 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 02:39:07,965 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 51 transitions, 370 flow [2024-06-28 02:39:07,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:07,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:07,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:07,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:39:07,966 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)] === [2024-06-28 02:39:07,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:07,966 INFO L85 PathProgramCache]: Analyzing trace with hash -153917771, now seen corresponding path program 3 times [2024-06-28 02:39:07,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:07,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481879407] [2024-06-28 02:39:07,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:07,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:08,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481879407] [2024-06-28 02:39:08,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481879407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:08,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:08,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:08,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538809000] [2024-06-28 02:39:08,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:08,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:08,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:08,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:08,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:08,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 51 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:08,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:08,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:08,117 INFO L124 PetriNetUnfolderBase]: 109/236 cut-off events. [2024-06-28 02:39:08,117 INFO L125 PetriNetUnfolderBase]: For 1361/1361 co-relation queries the response was YES. [2024-06-28 02:39:08,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 236 events. 109/236 cut-off events. For 1361/1361 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 948 event pairs, 28 based on Foata normal form. 1/234 useless extension candidates. Maximal degree in co-relation 924. Up to 139 conditions per place. [2024-06-28 02:39:08,119 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 30 selfloop transitions, 22 changer transitions 0/58 dead transitions. [2024-06-28 02:39:08,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 490 flow [2024-06-28 02:39:08,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-28 02:39:08,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6055555555555555 [2024-06-28 02:39:08,120 INFO L175 Difference]: Start difference. First operand has 60 places, 51 transitions, 370 flow. Second operand 6 states and 109 transitions. [2024-06-28 02:39:08,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 490 flow [2024-06-28 02:39:08,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 410 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 02:39:08,124 INFO L231 Difference]: Finished difference. Result has 61 places, 51 transitions, 340 flow [2024-06-28 02:39:08,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=61, PETRI_TRANSITIONS=51} [2024-06-28 02:39:08,124 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-28 02:39:08,125 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 51 transitions, 340 flow [2024-06-28 02:39:08,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:08,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:08,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:39:08,125 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)] === [2024-06-28 02:39:08,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:08,126 INFO L85 PathProgramCache]: Analyzing trace with hash -348767463, now seen corresponding path program 1 times [2024-06-28 02:39:08,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:08,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771088574] [2024-06-28 02:39:08,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:08,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:08,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:08,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771088574] [2024-06-28 02:39:08,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771088574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:08,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:08,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:08,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267853729] [2024-06-28 02:39:08,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:08,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:08,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:08,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:08,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:08,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 51 transitions, 340 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:08,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:08,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:08,261 INFO L124 PetriNetUnfolderBase]: 113/251 cut-off events. [2024-06-28 02:39:08,262 INFO L125 PetriNetUnfolderBase]: For 1478/1478 co-relation queries the response was YES. [2024-06-28 02:39:08,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 251 events. 113/251 cut-off events. For 1478/1478 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1034 event pairs, 26 based on Foata normal form. 2/251 useless extension candidates. Maximal degree in co-relation 947. Up to 173 conditions per place. [2024-06-28 02:39:08,263 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 41 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2024-06-28 02:39:08,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 472 flow [2024-06-28 02:39:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 02:39:08,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-28 02:39:08,264 INFO L175 Difference]: Start difference. First operand has 61 places, 51 transitions, 340 flow. Second operand 6 states and 107 transitions. [2024-06-28 02:39:08,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 472 flow [2024-06-28 02:39:08,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 60 transitions, 413 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 02:39:08,267 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 319 flow [2024-06-28 02:39:08,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-28 02:39:08,268 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-28 02:39:08,268 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 319 flow [2024-06-28 02:39:08,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:08,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:08,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:39:08,269 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)] === [2024-06-28 02:39:08,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:08,269 INFO L85 PathProgramCache]: Analyzing trace with hash -339244263, now seen corresponding path program 2 times [2024-06-28 02:39:08,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:08,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442269258] [2024-06-28 02:39:08,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:08,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:08,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:08,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442269258] [2024-06-28 02:39:08,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442269258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:08,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:08,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:39:08,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974188920] [2024-06-28 02:39:08,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:08,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:39:08,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:08,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:39:08,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:39:08,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:08,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 319 flow. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:08,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:08,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:08,407 INFO L124 PetriNetUnfolderBase]: 110/246 cut-off events. [2024-06-28 02:39:08,407 INFO L125 PetriNetUnfolderBase]: For 1412/1412 co-relation queries the response was YES. [2024-06-28 02:39:08,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 921 conditions, 246 events. 110/246 cut-off events. For 1412/1412 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1004 event pairs, 23 based on Foata normal form. 2/246 useless extension candidates. Maximal degree in co-relation 893. Up to 148 conditions per place. [2024-06-28 02:39:08,408 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-28 02:39:08,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 449 flow [2024-06-28 02:39:08,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:08,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:08,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-28 02:39:08,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 02:39:08,409 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 319 flow. Second operand 6 states and 105 transitions. [2024-06-28 02:39:08,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 449 flow [2024-06-28 02:39:08,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 421 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:39:08,413 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 321 flow [2024-06-28 02:39:08,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-06-28 02:39:08,413 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-28 02:39:08,413 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 321 flow [2024-06-28 02:39:08,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:08,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:08,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:39:08,414 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)] === [2024-06-28 02:39:08,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:08,421 INFO L85 PathProgramCache]: Analyzing trace with hash 103444663, now seen corresponding path program 1 times [2024-06-28 02:39:08,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:08,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989987978] [2024-06-28 02:39:08,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:08,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:08,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989987978] [2024-06-28 02:39:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989987978] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:08,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:08,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:08,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496028482] [2024-06-28 02:39:08,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:08,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:08,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:08,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:08,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:08,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:08,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 321 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:08,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:08,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:08,602 INFO L124 PetriNetUnfolderBase]: 121/270 cut-off events. [2024-06-28 02:39:08,603 INFO L125 PetriNetUnfolderBase]: For 1870/1870 co-relation queries the response was YES. [2024-06-28 02:39:08,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 270 events. 121/270 cut-off events. For 1870/1870 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1124 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. [2024-06-28 02:39:08,604 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 54 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2024-06-28 02:39:08,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 541 flow [2024-06-28 02:39:08,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:39:08,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:39:08,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-28 02:39:08,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-28 02:39:08,605 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 321 flow. Second operand 8 states and 140 transitions. [2024-06-28 02:39:08,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 541 flow [2024-06-28 02:39:08,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 72 transitions, 511 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:39:08,625 INFO L231 Difference]: Finished difference. Result has 68 places, 54 transitions, 337 flow [2024-06-28 02:39:08,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=337, PETRI_PLACES=68, PETRI_TRANSITIONS=54} [2024-06-28 02:39:08,625 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-28 02:39:08,625 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 54 transitions, 337 flow [2024-06-28 02:39:08,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:08,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:08,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:39:08,627 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)] === [2024-06-28 02:39:08,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:08,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1730492869, now seen corresponding path program 2 times [2024-06-28 02:39:08,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:08,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472044216] [2024-06-28 02:39:08,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:08,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:08,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:08,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472044216] [2024-06-28 02:39:08,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472044216] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:08,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:08,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:08,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075234620] [2024-06-28 02:39:08,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:08,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:08,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:08,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:08,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 54 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:08,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:08,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:08,806 INFO L124 PetriNetUnfolderBase]: 118/265 cut-off events. [2024-06-28 02:39:08,806 INFO L125 PetriNetUnfolderBase]: For 1793/1793 co-relation queries the response was YES. [2024-06-28 02:39:08,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1006 conditions, 265 events. 118/265 cut-off events. For 1793/1793 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1107 event pairs, 19 based on Foata normal form. 2/266 useless extension candidates. Maximal degree in co-relation 976. Up to 192 conditions per place. [2024-06-28 02:39:08,807 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 53 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2024-06-28 02:39:08,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 69 transitions, 499 flow [2024-06-28 02:39:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-28 02:39:08,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5904761904761905 [2024-06-28 02:39:08,808 INFO L175 Difference]: Start difference. First operand has 68 places, 54 transitions, 337 flow. Second operand 7 states and 124 transitions. [2024-06-28 02:39:08,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 69 transitions, 499 flow [2024-06-28 02:39:08,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 473 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:39:08,813 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 335 flow [2024-06-28 02:39:08,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=335, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-06-28 02:39:08,814 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-28 02:39:08,814 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 335 flow [2024-06-28 02:39:08,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:08,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:08,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:39:08,814 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)] === [2024-06-28 02:39:08,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1199240759, now seen corresponding path program 3 times [2024-06-28 02:39:08,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:08,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768830767] [2024-06-28 02:39:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:08,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:08,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:08,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:08,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768830767] [2024-06-28 02:39:08,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768830767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:08,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:08,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:08,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839332186] [2024-06-28 02:39:08,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:08,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:08,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:08,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:08,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:08,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:08,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:08,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:08,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:08,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:08,993 INFO L124 PetriNetUnfolderBase]: 122/270 cut-off events. [2024-06-28 02:39:08,993 INFO L125 PetriNetUnfolderBase]: For 2056/2056 co-relation queries the response was YES. [2024-06-28 02:39:08,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 270 events. 122/270 cut-off events. For 2056/2056 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1128 event pairs, 25 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 1006. Up to 160 conditions per place. [2024-06-28 02:39:08,994 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 26 changer transitions 0/67 dead transitions. [2024-06-28 02:39:08,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 67 transitions, 495 flow [2024-06-28 02:39:08,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-28 02:39:08,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-06-28 02:39:08,996 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 335 flow. Second operand 7 states and 129 transitions. [2024-06-28 02:39:08,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 67 transitions, 495 flow [2024-06-28 02:39:09,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 67 transitions, 473 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 02:39:09,004 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 381 flow [2024-06-28 02:39:09,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=381, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-06-28 02:39:09,004 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-06-28 02:39:09,004 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 381 flow [2024-06-28 02:39:09,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:09,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:09,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:39:09,005 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)] === [2024-06-28 02:39:09,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:09,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2045948169, now seen corresponding path program 4 times [2024-06-28 02:39:09,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:09,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865252553] [2024-06-28 02:39:09,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:09,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:09,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865252553] [2024-06-28 02:39:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865252553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:09,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:09,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638376279] [2024-06-28 02:39:09,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:09,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:09,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:09,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:09,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:09,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:09,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:09,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:09,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:09,167 INFO L124 PetriNetUnfolderBase]: 131/290 cut-off events. [2024-06-28 02:39:09,167 INFO L125 PetriNetUnfolderBase]: For 3363/3363 co-relation queries the response was YES. [2024-06-28 02:39:09,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1100 conditions, 290 events. 131/290 cut-off events. For 3363/3363 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1274 event pairs, 30 based on Foata normal form. 10/297 useless extension candidates. Maximal degree in co-relation 1067. Up to 151 conditions per place. [2024-06-28 02:39:09,168 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 22 changer transitions 4/67 dead transitions. [2024-06-28 02:39:09,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 67 transitions, 537 flow [2024-06-28 02:39:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 02:39:09,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-28 02:39:09,170 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 381 flow. Second operand 7 states and 128 transitions. [2024-06-28 02:39:09,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 67 transitions, 537 flow [2024-06-28 02:39:09,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 479 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 02:39:09,175 INFO L231 Difference]: Finished difference. Result has 74 places, 54 transitions, 366 flow [2024-06-28 02:39:09,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=74, PETRI_TRANSITIONS=54} [2024-06-28 02:39:09,176 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-06-28 02:39:09,176 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 54 transitions, 366 flow [2024-06-28 02:39:09,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:09,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:09,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:39:09,177 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)] === [2024-06-28 02:39:09,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1253130722, now seen corresponding path program 1 times [2024-06-28 02:39:09,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:09,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260176197] [2024-06-28 02:39:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:09,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:09,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:09,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260176197] [2024-06-28 02:39:09,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260176197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478624067] [2024-06-28 02:39:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:09,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:09,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:09,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:09,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:09,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 54 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:09,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:09,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:09,368 INFO L124 PetriNetUnfolderBase]: 155/354 cut-off events. [2024-06-28 02:39:09,368 INFO L125 PetriNetUnfolderBase]: For 4344/4344 co-relation queries the response was YES. [2024-06-28 02:39:09,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1374 conditions, 354 events. 155/354 cut-off events. For 4344/4344 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1692 event pairs, 33 based on Foata normal form. 6/357 useless extension candidates. Maximal degree in co-relation 1340. Up to 126 conditions per place. [2024-06-28 02:39:09,370 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 38 selfloop transitions, 15 changer transitions 12/71 dead transitions. [2024-06-28 02:39:09,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 71 transitions, 580 flow [2024-06-28 02:39:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-28 02:39:09,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095238095238096 [2024-06-28 02:39:09,371 INFO L175 Difference]: Start difference. First operand has 74 places, 54 transitions, 366 flow. Second operand 7 states and 128 transitions. [2024-06-28 02:39:09,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 71 transitions, 580 flow [2024-06-28 02:39:09,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 524 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:39:09,379 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 325 flow [2024-06-28 02:39:09,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2024-06-28 02:39:09,379 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-28 02:39:09,379 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 325 flow [2024-06-28 02:39:09,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:09,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:09,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:39:09,380 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)] === [2024-06-28 02:39:09,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:09,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1472237150, now seen corresponding path program 2 times [2024-06-28 02:39:09,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:09,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150138632] [2024-06-28 02:39:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:09,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:09,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:09,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150138632] [2024-06-28 02:39:09,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150138632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:09,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:09,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:09,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369769772] [2024-06-28 02:39:09,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:09,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:09,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:09,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:09,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:09,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:09,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 51 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:09,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:09,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:09,564 INFO L124 PetriNetUnfolderBase]: 139/316 cut-off events. [2024-06-28 02:39:09,564 INFO L125 PetriNetUnfolderBase]: For 4778/4778 co-relation queries the response was YES. [2024-06-28 02:39:09,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 316 events. 139/316 cut-off events. For 4778/4778 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1444 event pairs, 38 based on Foata normal form. 6/320 useless extension candidates. Maximal degree in co-relation 1216. Up to 126 conditions per place. [2024-06-28 02:39:09,566 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 37 selfloop transitions, 14 changer transitions 6/63 dead transitions. [2024-06-28 02:39:09,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 513 flow [2024-06-28 02:39:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:09,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:09,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-28 02:39:09,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-28 02:39:09,567 INFO L175 Difference]: Start difference. First operand has 75 places, 51 transitions, 325 flow. Second operand 6 states and 108 transitions. [2024-06-28 02:39:09,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 513 flow [2024-06-28 02:39:09,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 471 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:39:09,572 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 308 flow [2024-06-28 02:39:09,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=308, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2024-06-28 02:39:09,573 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-06-28 02:39:09,573 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 308 flow [2024-06-28 02:39:09,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:09,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:09,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:39:09,574 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)] === [2024-06-28 02:39:09,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:09,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1472385020, now seen corresponding path program 3 times [2024-06-28 02:39:09,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:09,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945482480] [2024-06-28 02:39:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:09,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:09,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:09,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:09,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945482480] [2024-06-28 02:39:09,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945482480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:09,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:09,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:09,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506184503] [2024-06-28 02:39:09,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:09,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:09,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:09,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:09,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:09,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:09,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:09,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:09,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:09,731 INFO L124 PetriNetUnfolderBase]: 115/268 cut-off events. [2024-06-28 02:39:09,731 INFO L125 PetriNetUnfolderBase]: For 2848/2848 co-relation queries the response was YES. [2024-06-28 02:39:09,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 268 events. 115/268 cut-off events. For 2848/2848 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1185 event pairs, 21 based on Foata normal form. 8/274 useless extension candidates. Maximal degree in co-relation 920. Up to 140 conditions per place. [2024-06-28 02:39:09,732 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 29 selfloop transitions, 14 changer transitions 8/57 dead transitions. [2024-06-28 02:39:09,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 57 transitions, 434 flow [2024-06-28 02:39:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:39:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:39:09,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-28 02:39:09,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5944444444444444 [2024-06-28 02:39:09,733 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 308 flow. Second operand 6 states and 107 transitions. [2024-06-28 02:39:09,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 57 transitions, 434 flow [2024-06-28 02:39:09,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 402 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:39:09,737 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 280 flow [2024-06-28 02:39:09,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=280, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2024-06-28 02:39:09,738 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 39 predicate places. [2024-06-28 02:39:09,738 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 280 flow [2024-06-28 02:39:09,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:09,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:09,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:39:09,739 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)] === [2024-06-28 02:39:09,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 322375194, now seen corresponding path program 4 times [2024-06-28 02:39:09,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:09,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108440847] [2024-06-28 02:39:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:09,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:09,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:09,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108440847] [2024-06-28 02:39:09,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108440847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:09,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:09,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:09,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377685668] [2024-06-28 02:39:09,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:09,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:09,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:09,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:09,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:09,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:09,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 280 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:09,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:09,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:09,917 INFO L124 PetriNetUnfolderBase]: 105/239 cut-off events. [2024-06-28 02:39:09,917 INFO L125 PetriNetUnfolderBase]: For 2563/2567 co-relation queries the response was YES. [2024-06-28 02:39:09,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 239 events. 105/239 cut-off events. For 2563/2567 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 993 event pairs, 26 based on Foata normal form. 12/250 useless extension candidates. Maximal degree in co-relation 840. Up to 131 conditions per place. [2024-06-28 02:39:09,918 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 23 selfloop transitions, 15 changer transitions 9/53 dead transitions. [2024-06-28 02:39:09,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 53 transitions, 400 flow [2024-06-28 02:39:09,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:09,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-28 02:39:09,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2024-06-28 02:39:09,919 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 280 flow. Second operand 7 states and 121 transitions. [2024-06-28 02:39:09,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 53 transitions, 400 flow [2024-06-28 02:39:09,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 349 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:39:09,923 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 247 flow [2024-06-28 02:39:09,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=247, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2024-06-28 02:39:09,923 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-28 02:39:09,923 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 247 flow [2024-06-28 02:39:09,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:09,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:09,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:09,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:39:09,924 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)] === [2024-06-28 02:39:09,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1794139662, now seen corresponding path program 1 times [2024-06-28 02:39:09,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:09,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866117614] [2024-06-28 02:39:09,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:09,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:09,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:09,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866117614] [2024-06-28 02:39:09,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866117614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:09,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:09,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:09,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597231558] [2024-06-28 02:39:09,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:09,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:09,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:10,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:10,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:10,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:10,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:10,051 INFO L124 PetriNetUnfolderBase]: 100/240 cut-off events. [2024-06-28 02:39:10,051 INFO L125 PetriNetUnfolderBase]: For 2255/2259 co-relation queries the response was YES. [2024-06-28 02:39:10,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 240 events. 100/240 cut-off events. For 2255/2259 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1001 event pairs, 30 based on Foata normal form. 12/251 useless extension candidates. Maximal degree in co-relation 774. Up to 127 conditions per place. [2024-06-28 02:39:10,052 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 25 selfloop transitions, 9 changer transitions 10/50 dead transitions. [2024-06-28 02:39:10,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 50 transitions, 359 flow [2024-06-28 02:39:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 02:39:10,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-06-28 02:39:10,053 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 247 flow. Second operand 7 states and 118 transitions. [2024-06-28 02:39:10,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 50 transitions, 359 flow [2024-06-28 02:39:10,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 325 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:39:10,055 INFO L231 Difference]: Finished difference. Result has 62 places, 37 transitions, 211 flow [2024-06-28 02:39:10,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=62, PETRI_TRANSITIONS=37} [2024-06-28 02:39:10,056 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2024-06-28 02:39:10,056 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 37 transitions, 211 flow [2024-06-28 02:39:10,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:10,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:10,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:39:10,056 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)] === [2024-06-28 02:39:10,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:10,056 INFO L85 PathProgramCache]: Analyzing trace with hash 329999706, now seen corresponding path program 2 times [2024-06-28 02:39:10,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:10,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880021290] [2024-06-28 02:39:10,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:10,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:10,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:10,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880021290] [2024-06-28 02:39:10,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880021290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:10,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:10,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:10,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312024965] [2024-06-28 02:39:10,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:10,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:10,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:10,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:10,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 37 transitions, 211 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:10,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:10,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:10,183 INFO L124 PetriNetUnfolderBase]: 89/225 cut-off events. [2024-06-28 02:39:10,183 INFO L125 PetriNetUnfolderBase]: For 1755/1755 co-relation queries the response was YES. [2024-06-28 02:39:10,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 732 conditions, 225 events. 89/225 cut-off events. For 1755/1755 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 931 event pairs, 24 based on Foata normal form. 6/230 useless extension candidates. Maximal degree in co-relation 704. Up to 111 conditions per place. [2024-06-28 02:39:10,184 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 23 selfloop transitions, 10 changer transitions 7/46 dead transitions. [2024-06-28 02:39:10,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 46 transitions, 313 flow [2024-06-28 02:39:10,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:10,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:10,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-28 02:39:10,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5619047619047619 [2024-06-28 02:39:10,185 INFO L175 Difference]: Start difference. First operand has 62 places, 37 transitions, 211 flow. Second operand 7 states and 118 transitions. [2024-06-28 02:39:10,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 46 transitions, 313 flow [2024-06-28 02:39:10,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 46 transitions, 291 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:39:10,187 INFO L231 Difference]: Finished difference. Result has 60 places, 34 transitions, 195 flow [2024-06-28 02:39:10,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=60, PETRI_TRANSITIONS=34} [2024-06-28 02:39:10,187 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 02:39:10,187 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 34 transitions, 195 flow [2024-06-28 02:39:10,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:10,188 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:10,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:39:10,188 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)] === [2024-06-28 02:39:10,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1886222538, now seen corresponding path program 5 times [2024-06-28 02:39:10,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:10,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221710809] [2024-06-28 02:39:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:10,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:10,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:10,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221710809] [2024-06-28 02:39:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221710809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:10,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:10,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:10,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707161347] [2024-06-28 02:39:10,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:10,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:10,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:10,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:10,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:10,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:10,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 34 transitions, 195 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:10,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:10,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:10,299 INFO L124 PetriNetUnfolderBase]: 73/191 cut-off events. [2024-06-28 02:39:10,299 INFO L125 PetriNetUnfolderBase]: For 1331/1331 co-relation queries the response was YES. [2024-06-28 02:39:10,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 191 events. 73/191 cut-off events. For 1331/1331 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 720 event pairs, 23 based on Foata normal form. 6/196 useless extension candidates. Maximal degree in co-relation 578. Up to 62 conditions per place. [2024-06-28 02:39:10,300 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 16 selfloop transitions, 4 changer transitions 18/44 dead transitions. [2024-06-28 02:39:10,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 44 transitions, 293 flow [2024-06-28 02:39:10,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:10,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-28 02:39:10,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-06-28 02:39:10,301 INFO L175 Difference]: Start difference. First operand has 60 places, 34 transitions, 195 flow. Second operand 7 states and 116 transitions. [2024-06-28 02:39:10,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 44 transitions, 293 flow [2024-06-28 02:39:10,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 44 transitions, 271 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 02:39:10,303 INFO L231 Difference]: Finished difference. Result has 60 places, 24 transitions, 125 flow [2024-06-28 02:39:10,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=24} [2024-06-28 02:39:10,303 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2024-06-28 02:39:10,303 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 24 transitions, 125 flow [2024-06-28 02:39:10,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:10,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:39:10,304 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)] === [2024-06-28 02:39:10,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash -158069640, now seen corresponding path program 3 times [2024-06-28 02:39:10,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:10,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023985374] [2024-06-28 02:39:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:10,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:10,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:10,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023985374] [2024-06-28 02:39:10,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023985374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:10,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:10,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:10,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354132506] [2024-06-28 02:39:10,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:10,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:10,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:10,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:10,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:10,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:10,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 24 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:10,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:10,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:10,431 INFO L124 PetriNetUnfolderBase]: 42/115 cut-off events. [2024-06-28 02:39:10,431 INFO L125 PetriNetUnfolderBase]: For 1220/1220 co-relation queries the response was YES. [2024-06-28 02:39:10,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 115 events. 42/115 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 345 event pairs, 15 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 358. Up to 52 conditions per place. [2024-06-28 02:39:10,432 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 14 selfloop transitions, 3 changer transitions 10/33 dead transitions. [2024-06-28 02:39:10,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 33 transitions, 201 flow [2024-06-28 02:39:10,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:10,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-06-28 02:39:10,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-28 02:39:10,433 INFO L175 Difference]: Start difference. First operand has 60 places, 24 transitions, 125 flow. Second operand 7 states and 112 transitions. [2024-06-28 02:39:10,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 33 transitions, 201 flow [2024-06-28 02:39:10,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 33 transitions, 170 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 02:39:10,434 INFO L231 Difference]: Finished difference. Result has 46 places, 21 transitions, 88 flow [2024-06-28 02:39:10,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=88, PETRI_PLACES=46, PETRI_TRANSITIONS=21} [2024-06-28 02:39:10,437 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2024-06-28 02:39:10,437 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 21 transitions, 88 flow [2024-06-28 02:39:10,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:39:10,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:10,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:39:10,438 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)] === [2024-06-28 02:39:10,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:39:10,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1947190320, now seen corresponding path program 4 times [2024-06-28 02:39:10,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:39:10,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479662885] [2024-06-28 02:39:10,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:39:10,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:39:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:39:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:39:10,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:39:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479662885] [2024-06-28 02:39:10,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479662885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:39:10,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:39:10,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:39:10,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967489478] [2024-06-28 02:39:10,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:39:10,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:39:10,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:39:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:39:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:39:10,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-28 02:39:10,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 21 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:39:10,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-28 02:39:10,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:39:10,542 INFO L124 PetriNetUnfolderBase]: 20/63 cut-off events. [2024-06-28 02:39:10,542 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-06-28 02:39:10,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 63 events. 20/63 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 104 event pairs, 0 based on Foata normal form. 6/69 useless extension candidates. Maximal degree in co-relation 148. Up to 24 conditions per place. [2024-06-28 02:39:10,543 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-28 02:39:10,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 26 transitions, 120 flow [2024-06-28 02:39:10,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:39:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:39:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-06-28 02:39:10,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:39:10,544 INFO L175 Difference]: Start difference. First operand has 46 places, 21 transitions, 88 flow. Second operand 7 states and 105 transitions. [2024-06-28 02:39:10,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 26 transitions, 120 flow [2024-06-28 02:39:10,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 26 transitions, 98 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 02:39:10,544 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2024-06-28 02:39:10,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2024-06-28 02:39:10,546 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 6 predicate places. [2024-06-28 02:39:10,546 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2024-06-28 02:39:10,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:39:10,548 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:39:10,549 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:39:10,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:39:10,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:39:10,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:39:10,551 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-06-28 02:39:10,553 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:39:10,553 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:39:10,556 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:39:10,556 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:39:10,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:39:10 BasicIcfg [2024-06-28 02:39:10,556 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:39:10,557 INFO L158 Benchmark]: Toolchain (without parser) took 6138.01ms. Allocated memory was 159.4MB in the beginning and 262.1MB in the end (delta: 102.8MB). Free memory was 97.0MB in the beginning and 190.8MB in the end (delta: -93.8MB). Peak memory consumption was 12.1MB. Max. memory is 16.1GB. [2024-06-28 02:39:10,557 INFO L158 Benchmark]: Witness Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:39:10,557 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:39:10,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 462.78ms. Allocated memory is still 159.4MB. Free memory was 96.5MB in the beginning and 70.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-06-28 02:39:10,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.80ms. Allocated memory is still 159.4MB. Free memory was 70.7MB in the beginning and 68.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:39:10,558 INFO L158 Benchmark]: Boogie Preprocessor took 35.91ms. Allocated memory is still 159.4MB. Free memory was 68.7MB in the beginning and 66.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:39:10,558 INFO L158 Benchmark]: RCFGBuilder took 412.85ms. Allocated memory was 159.4MB in the beginning and 218.1MB in the end (delta: 58.7MB). Free memory was 66.6MB in the beginning and 172.7MB in the end (delta: -106.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2024-06-28 02:39:10,558 INFO L158 Benchmark]: TraceAbstraction took 5186.03ms. Allocated memory was 218.1MB in the beginning and 262.1MB in the end (delta: 44.0MB). Free memory was 171.7MB in the beginning and 190.8MB in the end (delta: -19.1MB). Peak memory consumption was 26.0MB. Max. memory is 16.1GB. [2024-06-28 02:39:10,559 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 121.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 159.4MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 462.78ms. Allocated memory is still 159.4MB. Free memory was 96.5MB in the beginning and 70.7MB in the end (delta: 25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.80ms. Allocated memory is still 159.4MB. Free memory was 70.7MB in the beginning and 68.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.91ms. Allocated memory is still 159.4MB. Free memory was 68.7MB in the beginning and 66.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 412.85ms. Allocated memory was 159.4MB in the beginning and 218.1MB in the end (delta: 58.7MB). Free memory was 66.6MB in the beginning and 172.7MB in the end (delta: -106.1MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5186.03ms. Allocated memory was 218.1MB in the beginning and 262.1MB in the end (delta: 44.0MB). Free memory was 171.7MB in the beginning and 190.8MB in the end (delta: -19.1MB). Peak memory consumption was 26.0MB. 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, 48 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: 5.1s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1075 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 763 mSDsluCounter, 326 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 233 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3142 IncrementalHoareTripleChecker+Invalid, 3259 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 93 mSDtfsCounter, 3142 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=381occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 415 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 386 ConstructedInterpolants, 0 QuantifiedInterpolants, 2831 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! [2024-06-28 02:39:10,603 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