./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version bcb38a6f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i ./goblint.2024-05-21_14-57-05.files/protection/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-bcb38a6-m [2024-06-03 18:36:59,684 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-03 18:36:59,760 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-03 18:36:59,765 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-03 18:36:59,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-03 18:36:59,791 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-03 18:36:59,791 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-03 18:36:59,792 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-03 18:36:59,792 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-03 18:36:59,795 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-03 18:36:59,796 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-03 18:36:59,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-03 18:36:59,797 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-03 18:36:59,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-03 18:36:59,798 INFO L153 SettingsManager]: * Use SBE=true [2024-06-03 18:36:59,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-03 18:36:59,798 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-03 18:36:59,798 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-03 18:36:59,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-03 18:36:59,799 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-03 18:36:59,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-03 18:36:59,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-03 18:36:59,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-03 18:36:59,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-03 18:36:59,800 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-03 18:36:59,800 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-03 18:36:59,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-03 18:36:59,801 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-03 18:36:59,801 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-03 18:36:59,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-03 18:36:59,802 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-03 18:36:59,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-03 18:36:59,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 18:36:59,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-03 18:36:59,803 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-03 18:36:59,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-03 18:36:59,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-03 18:36:59,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-03 18:36:59,803 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-03 18:36:59,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-03 18:36:59,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-03 18:36:59,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-03 18:36:59,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-03 18:36:59,805 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-03 18:37:00,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-03 18:37:00,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-03 18:37:00,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-03 18:37:00,041 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-03 18:37:00,042 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-03 18:37:00,043 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-03 18:37:00,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-03 18:37:00,111 INFO L274 PluginConnector]: CDTParser initialized [2024-06-03 18:37:00,112 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-03 18:37:01,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-03 18:37:01,355 INFO L384 CDTParser]: Found 1 translation units. [2024-06-03 18:37:01,355 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-03 18:37:01,381 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8b41f78d/1c2a17c9b2b5430a829719d08b277994/FLAGf910c16cb [2024-06-03 18:37:01,402 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8b41f78d/1c2a17c9b2b5430a829719d08b277994 [2024-06-03 18:37:01,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-03 18:37:01,404 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-03 18:37:01,406 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-03 18:37:01,406 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-03 18:37:01,410 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-03 18:37:01,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:37:00" (1/2) ... [2024-06-03 18:37:01,411 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5a4e15 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:37:01, skipping insertion in model container [2024-06-03 18:37:01,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:37:00" (1/2) ... [2024-06-03 18:37:01,412 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@70087897 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 03.06 06:37:01, skipping insertion in model container [2024-06-03 18:37:01,412 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 06:37:01" (2/2) ... [2024-06-03 18:37:01,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a5a4e15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01, skipping insertion in model container [2024-06-03 18:37:01,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.06 06:37:01" (2/2) ... [2024-06-03 18:37:01,415 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-03 18:37:01,443 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-03 18:37:01,444 INFO L97 edCorrectnessWitness]: Location invariant before [L763-L763] ((((! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) [2024-06-03 18:37:01,444 INFO L97 edCorrectnessWitness]: Location invariant before [L764-L764] ((((! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1))) [2024-06-03 18:37:01,445 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-03 18:37:01,445 INFO L106 edCorrectnessWitness]: ghost_update [L761-L761] multithreaded = 1; [2024-06-03 18:37:01,480 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-03 18:37:01,764 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 18:37:01,773 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-03 18:37:01,852 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-03 18:37:01,907 INFO L206 MainTranslator]: Completed translation [2024-06-03 18:37:01,907 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01 WrapperNode [2024-06-03 18:37:01,908 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-03 18:37:01,908 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-03 18:37:01,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-03 18:37:01,909 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-03 18:37:01,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:01,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:01,985 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 57 [2024-06-03 18:37:01,987 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-03 18:37:01,988 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-03 18:37:01,988 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-03 18:37:01,988 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-03 18:37:01,995 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:01,996 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:01,999 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:02,010 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]. [2024-06-03 18:37:02,011 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:02,011 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:02,022 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:02,025 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:02,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:02,027 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:02,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-03 18:37:02,029 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-03 18:37:02,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-03 18:37:02,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-03 18:37:02,030 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (1/1) ... [2024-06-03 18:37:02,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-03 18:37:02,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-03 18:37:02,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-03 18:37:02,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-03 18:37:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-03 18:37:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-03 18:37:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-03 18:37:02,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-03 18:37:02,111 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-03 18:37:02,112 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-03 18:37:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-03 18:37:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-03 18:37:02,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-03 18:37:02,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-03 18:37:02,113 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-03 18:37:02,221 INFO L244 CfgBuilder]: Building ICFG [2024-06-03 18:37:02,223 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-03 18:37:02,362 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-03 18:37:02,362 INFO L293 CfgBuilder]: Performing block encoding [2024-06-03 18:37:02,432 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-03 18:37:02,432 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-03 18:37:02,433 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 06:37:02 BoogieIcfgContainer [2024-06-03 18:37:02,433 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-03 18:37:02,435 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-03 18:37:02,435 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-03 18:37:02,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-03 18:37:02,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 03.06 06:37:00" (1/4) ... [2024-06-03 18:37:02,442 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef579d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 03.06 06:37:02, skipping insertion in model container [2024-06-03 18:37:02,442 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.06 06:37:01" (2/4) ... [2024-06-03 18:37:02,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef579d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 06:37:02, skipping insertion in model container [2024-06-03 18:37:02,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.06 06:37:01" (3/4) ... [2024-06-03 18:37:02,443 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ef579d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.06 06:37:02, skipping insertion in model container [2024-06-03 18:37:02,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.06 06:37:02" (4/4) ... [2024-06-03 18:37:02,444 INFO L112 eAbstractionObserver]: Analyzing ICFG safe006_pso.oepc_pso.opt_tso.oepc_tso.opt-thin000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-06-03 18:37:02,457 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-03 18:37:02,457 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-03 18:37:02,457 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-03 18:37:02,493 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-03 18:37:02,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 30 transitions, 68 flow [2024-06-03 18:37:02,562 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-06-03 18:37:02,563 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 18:37:02,565 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 39 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. [2024-06-03 18:37:02,566 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 30 transitions, 68 flow [2024-06-03 18:37:02,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 22 transitions, 50 flow [2024-06-03 18:37:02,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-03 18:37:02,587 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;@3819a490, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-03 18:37:02,587 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-03 18:37:02,593 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-03 18:37:02,594 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-03 18:37:02,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-03 18:37:02,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:02,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-03 18:37:02,595 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)] === [2024-06-03 18:37:02,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1558221865, now seen corresponding path program 1 times [2024-06-03 18:37:02,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:02,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421803174] [2024-06-03 18:37:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:02,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:02,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421803174] [2024-06-03 18:37:02,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421803174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:02,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:02,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-03 18:37:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086785579] [2024-06-03 18:37:02,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:02,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-03 18:37:02,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:02,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-03 18:37:02,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-03 18:37:02,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 30 [2024-06-03 18:37:02,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:02,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:02,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 30 [2024-06-03 18:37:02,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:03,061 INFO L124 PetriNetUnfolderBase]: 66/148 cut-off events. [2024-06-03 18:37:03,062 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-06-03 18:37:03,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 148 events. 66/148 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 525 event pairs, 33 based on Foata normal form. 1/143 useless extension candidates. Maximal degree in co-relation 279. Up to 124 conditions per place. [2024-06-03 18:37:03,066 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 19 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2024-06-03 18:37:03,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 109 flow [2024-06-03 18:37:03,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-03 18:37:03,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-03 18:37:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-03 18:37:03,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-03 18:37:03,078 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 50 flow. Second operand 3 states and 60 transitions. [2024-06-03 18:37:03,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 109 flow [2024-06-03 18:37:03,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 28 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-03 18:37:03,081 INFO L231 Difference]: Finished difference. Result has 30 places, 24 transitions, 69 flow [2024-06-03 18:37:03,083 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} [2024-06-03 18:37:03,085 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 1 predicate places. [2024-06-03 18:37:03,085 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 24 transitions, 69 flow [2024-06-03 18:37:03,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:03,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:03,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:03,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-03 18:37:03,086 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)] === [2024-06-03 18:37:03,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:03,087 INFO L85 PathProgramCache]: Analyzing trace with hash 984845510, now seen corresponding path program 1 times [2024-06-03 18:37:03,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:03,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887421395] [2024-06-03 18:37:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:03,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:03,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:03,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:03,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887421395] [2024-06-03 18:37:03,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887421395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:03,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:03,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:37:03,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850481300] [2024-06-03 18:37:03,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:03,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 18:37:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:03,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 18:37:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 18:37:03,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:03,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:03,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:03,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:03,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:03,386 INFO L124 PetriNetUnfolderBase]: 99/210 cut-off events. [2024-06-03 18:37:03,386 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-06-03 18:37:03,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 210 events. 99/210 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 767 event pairs, 33 based on Foata normal form. 2/211 useless extension candidates. Maximal degree in co-relation 463. Up to 164 conditions per place. [2024-06-03 18:37:03,389 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-03 18:37:03,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 168 flow [2024-06-03 18:37:03,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:37:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:37:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-03 18:37:03,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-06-03 18:37:03,392 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 69 flow. Second operand 4 states and 73 transitions. [2024-06-03 18:37:03,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 168 flow [2024-06-03 18:37:03,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 37 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-03 18:37:03,396 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 102 flow [2024-06-03 18:37:03,396 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=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2024-06-03 18:37:03,397 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-06-03 18:37:03,397 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 102 flow [2024-06-03 18:37:03,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:03,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:03,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:03,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-03 18:37:03,398 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:03,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:03,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1543765317, now seen corresponding path program 1 times [2024-06-03 18:37:03,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:03,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562275412] [2024-06-03 18:37:03,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:03,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:03,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:03,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562275412] [2024-06-03 18:37:03,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562275412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:03,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:03,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:37:03,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229066972] [2024-06-03 18:37:03,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:03,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:37:03,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:03,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:37:03,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:37:03,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:03,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 102 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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) [2024-06-03 18:37:03,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:03,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:03,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:03,763 INFO L124 PetriNetUnfolderBase]: 95/202 cut-off events. [2024-06-03 18:37:03,764 INFO L125 PetriNetUnfolderBase]: For 105/107 co-relation queries the response was YES. [2024-06-03 18:37:03,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 202 events. 95/202 cut-off events. For 105/107 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 720 event pairs, 17 based on Foata normal form. 6/207 useless extension candidates. Maximal degree in co-relation 500. Up to 138 conditions per place. [2024-06-03 18:37:03,768 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 28 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2024-06-03 18:37:03,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 190 flow [2024-06-03 18:37:03,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:37:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:37:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-06-03 18:37:03,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2024-06-03 18:37:03,771 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 102 flow. Second operand 5 states and 84 transitions. [2024-06-03 18:37:03,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 190 flow [2024-06-03 18:37:03,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 38 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-03 18:37:03,775 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 112 flow [2024-06-03 18:37:03,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2024-06-03 18:37:03,776 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2024-06-03 18:37:03,776 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 112 flow [2024-06-03 18:37:03,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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) [2024-06-03 18:37:03,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:03,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:03,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-03 18:37:03,777 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-03 18:37:03,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1100810531, now seen corresponding path program 1 times [2024-06-03 18:37:03,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:03,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190303922] [2024-06-03 18:37:03,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:03,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:03,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:03,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190303922] [2024-06-03 18:37:03,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190303922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:03,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:03,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-03 18:37:03,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491730949] [2024-06-03 18:37:03,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:03,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-03 18:37:03,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:03,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-03 18:37:03,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-03 18:37:03,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:03,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:03,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:03,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:03,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:04,002 INFO L124 PetriNetUnfolderBase]: 93/195 cut-off events. [2024-06-03 18:37:04,002 INFO L125 PetriNetUnfolderBase]: For 177/177 co-relation queries the response was YES. [2024-06-03 18:37:04,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 550 conditions, 195 events. 93/195 cut-off events. For 177/177 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 681 event pairs, 25 based on Foata normal form. 1/195 useless extension candidates. Maximal degree in co-relation 529. Up to 165 conditions per place. [2024-06-03 18:37:04,003 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 28 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-03 18:37:04,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 207 flow [2024-06-03 18:37:04,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:37:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:37:04,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 68 transitions. [2024-06-03 18:37:04,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-03 18:37:04,004 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 112 flow. Second operand 4 states and 68 transitions. [2024-06-03 18:37:04,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 207 flow [2024-06-03 18:37:04,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 188 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-03 18:37:04,006 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 130 flow [2024-06-03 18:37:04,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=130, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-03 18:37:04,007 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2024-06-03 18:37:04,007 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 130 flow [2024-06-03 18:37:04,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:04,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:04,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-03 18:37:04,007 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)] === [2024-06-03 18:37:04,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:04,008 INFO L85 PathProgramCache]: Analyzing trace with hash -77355414, now seen corresponding path program 1 times [2024-06-03 18:37:04,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:04,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283779419] [2024-06-03 18:37:04,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:04,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:04,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:04,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:04,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:04,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283779419] [2024-06-03 18:37:04,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283779419] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:04,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:04,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:37:04,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708037472] [2024-06-03 18:37:04,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:04,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:37:04,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:37:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:37:04,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:04,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:04,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:04,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:04,201 INFO L124 PetriNetUnfolderBase]: 96/205 cut-off events. [2024-06-03 18:37:04,201 INFO L125 PetriNetUnfolderBase]: For 229/231 co-relation queries the response was YES. [2024-06-03 18:37:04,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 205 events. 96/205 cut-off events. For 229/231 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 744 event pairs, 31 based on Foata normal form. 3/207 useless extension candidates. Maximal degree in co-relation 581. Up to 143 conditions per place. [2024-06-03 18:37:04,203 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 30 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-03 18:37:04,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 260 flow [2024-06-03 18:37:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:37:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:37:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-03 18:37:04,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2024-06-03 18:37:04,204 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 130 flow. Second operand 5 states and 87 transitions. [2024-06-03 18:37:04,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 260 flow [2024-06-03 18:37:04,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-03 18:37:04,209 INFO L231 Difference]: Finished difference. Result has 44 places, 35 transitions, 177 flow [2024-06-03 18:37:04,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=35} [2024-06-03 18:37:04,214 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2024-06-03 18:37:04,214 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 35 transitions, 177 flow [2024-06-03 18:37:04,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:04,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:04,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-03 18:37:04,216 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)] === [2024-06-03 18:37:04,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:04,217 INFO L85 PathProgramCache]: Analyzing trace with hash 181547080, now seen corresponding path program 2 times [2024-06-03 18:37:04,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:04,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639945018] [2024-06-03 18:37:04,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:04,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:04,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:04,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639945018] [2024-06-03 18:37:04,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639945018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:04,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:04,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:37:04,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931462593] [2024-06-03 18:37:04,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:04,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:37:04,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:37:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:37:04,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:04,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:04,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:04,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:04,453 INFO L124 PetriNetUnfolderBase]: 94/202 cut-off events. [2024-06-03 18:37:04,453 INFO L125 PetriNetUnfolderBase]: For 370/372 co-relation queries the response was YES. [2024-06-03 18:37:04,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 655 conditions, 202 events. 94/202 cut-off events. For 370/372 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 734 event pairs, 31 based on Foata normal form. 3/204 useless extension candidates. Maximal degree in co-relation 630. Up to 144 conditions per place. [2024-06-03 18:37:04,456 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 30 selfloop transitions, 9 changer transitions 0/43 dead transitions. [2024-06-03 18:37:04,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 275 flow [2024-06-03 18:37:04,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:37:04,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:37:04,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-06-03 18:37:04,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-06-03 18:37:04,458 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 177 flow. Second operand 4 states and 73 transitions. [2024-06-03 18:37:04,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 275 flow [2024-06-03 18:37:04,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 43 transitions, 264 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-03 18:37:04,461 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 192 flow [2024-06-03 18:37:04,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2024-06-03 18:37:04,463 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-03 18:37:04,463 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 192 flow [2024-06-03 18:37:04,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:04,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:04,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-03 18:37:04,464 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)] === [2024-06-03 18:37:04,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:04,464 INFO L85 PathProgramCache]: Analyzing trace with hash 181547266, now seen corresponding path program 1 times [2024-06-03 18:37:04,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:04,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978755876] [2024-06-03 18:37:04,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:04,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:04,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978755876] [2024-06-03 18:37:04,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978755876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:04,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:04,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:37:04,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093855736] [2024-06-03 18:37:04,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:04,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:37:04,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:04,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:37:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:37:04,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:04,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:04,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:04,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:04,695 INFO L124 PetriNetUnfolderBase]: 97/207 cut-off events. [2024-06-03 18:37:04,695 INFO L125 PetriNetUnfolderBase]: For 525/527 co-relation queries the response was YES. [2024-06-03 18:37:04,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714 conditions, 207 events. 97/207 cut-off events. For 525/527 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 763 event pairs, 30 based on Foata normal form. 3/209 useless extension candidates. Maximal degree in co-relation 687. Up to 155 conditions per place. [2024-06-03 18:37:04,697 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 29 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2024-06-03 18:37:04,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 288 flow [2024-06-03 18:37:04,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-03 18:37:04,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-03 18:37:04,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 70 transitions. [2024-06-03 18:37:04,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-06-03 18:37:04,699 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 192 flow. Second operand 4 states and 70 transitions. [2024-06-03 18:37:04,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 288 flow [2024-06-03 18:37:04,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 42 transitions, 270 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-03 18:37:04,701 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 212 flow [2024-06-03 18:37:04,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=212, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-03 18:37:04,702 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-06-03 18:37:04,702 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 212 flow [2024-06-03 18:37:04,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:04,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:04,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-03 18:37:04,704 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)] === [2024-06-03 18:37:04,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:04,705 INFO L85 PathProgramCache]: Analyzing trace with hash 123255072, now seen corresponding path program 2 times [2024-06-03 18:37:04,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:04,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522666526] [2024-06-03 18:37:04,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:04,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:04,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:04,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:04,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522666526] [2024-06-03 18:37:04,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522666526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:04,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:04,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:37:04,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664292623] [2024-06-03 18:37:04,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:04,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:37:04,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:37:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:37:04,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:04,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:04,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:04,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:04,877 INFO L124 PetriNetUnfolderBase]: 95/204 cut-off events. [2024-06-03 18:37:04,878 INFO L125 PetriNetUnfolderBase]: For 589/591 co-relation queries the response was YES. [2024-06-03 18:37:04,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 204 events. 95/204 cut-off events. For 589/591 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 735 event pairs, 30 based on Foata normal form. 3/206 useless extension candidates. Maximal degree in co-relation 712. Up to 149 conditions per place. [2024-06-03 18:37:04,879 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 30 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-03 18:37:04,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 320 flow [2024-06-03 18:37:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:37:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:37:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-03 18:37:04,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2024-06-03 18:37:04,880 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 212 flow. Second operand 5 states and 83 transitions. [2024-06-03 18:37:04,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 320 flow [2024-06-03 18:37:04,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 300 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-03 18:37:04,883 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 235 flow [2024-06-03 18:37:04,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=235, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-03 18:37:04,883 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2024-06-03 18:37:04,883 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 235 flow [2024-06-03 18:37:04,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:04,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:04,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:04,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-03 18:37:04,884 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)] === [2024-06-03 18:37:04,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:04,885 INFO L85 PathProgramCache]: Analyzing trace with hash 123264000, now seen corresponding path program 1 times [2024-06-03 18:37:04,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:04,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459612154] [2024-06-03 18:37:04,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:04,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:04,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:04,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:04,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459612154] [2024-06-03 18:37:04,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459612154] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:04,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:05,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-03 18:37:05,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535049035] [2024-06-03 18:37:05,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:05,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-03 18:37:05,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:05,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-03 18:37:05,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-03 18:37:05,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:05,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 235 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:05,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:05,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:05,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:05,072 INFO L124 PetriNetUnfolderBase]: 92/198 cut-off events. [2024-06-03 18:37:05,072 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2024-06-03 18:37:05,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 198 events. 92/198 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 694 event pairs, 22 based on Foata normal form. 2/199 useless extension candidates. Maximal degree in co-relation 699. Up to 158 conditions per place. [2024-06-03 18:37:05,073 INFO L140 encePairwiseOnDemand]: 25/30 looper letters, 37 selfloop transitions, 6 changer transitions 0/47 dead transitions. [2024-06-03 18:37:05,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 341 flow [2024-06-03 18:37:05,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:37:05,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:37:05,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-03 18:37:05,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-03 18:37:05,074 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 235 flow. Second operand 5 states and 80 transitions. [2024-06-03 18:37:05,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 341 flow [2024-06-03 18:37:05,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 47 transitions, 316 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-03 18:37:05,077 INFO L231 Difference]: Finished difference. Result has 53 places, 39 transitions, 226 flow [2024-06-03 18:37:05,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=53, PETRI_TRANSITIONS=39} [2024-06-03 18:37:05,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 24 predicate places. [2024-06-03 18:37:05,077 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 39 transitions, 226 flow [2024-06-03 18:37:05,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:05,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:05,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:05,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-03 18:37:05,078 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)] === [2024-06-03 18:37:05,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:05,078 INFO L85 PathProgramCache]: Analyzing trace with hash 964356720, now seen corresponding path program 1 times [2024-06-03 18:37:05,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:05,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370631718] [2024-06-03 18:37:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:05,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:05,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:05,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370631718] [2024-06-03 18:37:05,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370631718] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:05,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816415370] [2024-06-03 18:37:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:05,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:05,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:05,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:05,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 39 transitions, 226 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:05,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:05,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:05,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:05,315 INFO L124 PetriNetUnfolderBase]: 100/214 cut-off events. [2024-06-03 18:37:05,315 INFO L125 PetriNetUnfolderBase]: For 700/702 co-relation queries the response was YES. [2024-06-03 18:37:05,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 793 conditions, 214 events. 100/214 cut-off events. For 700/702 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 791 event pairs, 28 based on Foata normal form. 3/216 useless extension candidates. Maximal degree in co-relation 763. Up to 136 conditions per place. [2024-06-03 18:37:05,317 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 33 selfloop transitions, 19 changer transitions 0/56 dead transitions. [2024-06-03 18:37:05,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 400 flow [2024-06-03 18:37:05,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:05,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:05,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-03 18:37:05,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291666666666667 [2024-06-03 18:37:05,319 INFO L175 Difference]: Start difference. First operand has 53 places, 39 transitions, 226 flow. Second operand 8 states and 127 transitions. [2024-06-03 18:37:05,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 400 flow [2024-06-03 18:37:05,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 56 transitions, 384 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-03 18:37:05,321 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 281 flow [2024-06-03 18:37:05,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=281, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2024-06-03 18:37:05,322 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 28 predicate places. [2024-06-03 18:37:05,322 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 281 flow [2024-06-03 18:37:05,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:05,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:05,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:05,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-03 18:37:05,323 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)] === [2024-06-03 18:37:05,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1332992752, now seen corresponding path program 2 times [2024-06-03 18:37:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:05,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604690510] [2024-06-03 18:37:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:05,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:05,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:05,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604690510] [2024-06-03 18:37:05,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604690510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:05,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:05,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108831970] [2024-06-03 18:37:05,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:05,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:05,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:05,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:05,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:05,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:05,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 281 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:05,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:05,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:05,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:05,532 INFO L124 PetriNetUnfolderBase]: 103/221 cut-off events. [2024-06-03 18:37:05,532 INFO L125 PetriNetUnfolderBase]: For 936/938 co-relation queries the response was YES. [2024-06-03 18:37:05,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 221 events. 103/221 cut-off events. For 936/938 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 836 event pairs, 28 based on Foata normal form. 3/223 useless extension candidates. Maximal degree in co-relation 837. Up to 146 conditions per place. [2024-06-03 18:37:05,534 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-03 18:37:05,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 445 flow [2024-06-03 18:37:05,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:37:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:37:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-03 18:37:05,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-06-03 18:37:05,535 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 281 flow. Second operand 6 states and 102 transitions. [2024-06-03 18:37:05,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 445 flow [2024-06-03 18:37:05,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 413 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-03 18:37:05,538 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 304 flow [2024-06-03 18:37:05,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=304, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-03 18:37:05,539 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-03 18:37:05,539 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 304 flow [2024-06-03 18:37:05,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:05,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:05,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:05,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-03 18:37:05,539 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)] === [2024-06-03 18:37:05,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:05,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1332998332, now seen corresponding path program 3 times [2024-06-03 18:37:05,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:05,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643319351] [2024-06-03 18:37:05,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:05,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:05,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:05,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:05,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643319351] [2024-06-03 18:37:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643319351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:05,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:05,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560613623] [2024-06-03 18:37:05,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:05,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:05,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:05,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:05,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:05,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:05,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:05,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:05,791 INFO L124 PetriNetUnfolderBase]: 101/218 cut-off events. [2024-06-03 18:37:05,791 INFO L125 PetriNetUnfolderBase]: For 1037/1039 co-relation queries the response was YES. [2024-06-03 18:37:05,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 218 events. 101/218 cut-off events. For 1037/1039 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 820 event pairs, 28 based on Foata normal form. 3/220 useless extension candidates. Maximal degree in co-relation 846. Up to 144 conditions per place. [2024-06-03 18:37:05,793 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-03 18:37:05,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 434 flow [2024-06-03 18:37:05,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:05,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-03 18:37:05,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-06-03 18:37:05,794 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 304 flow. Second operand 7 states and 113 transitions. [2024-06-03 18:37:05,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 434 flow [2024-06-03 18:37:05,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 400 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-03 18:37:05,797 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 309 flow [2024-06-03 18:37:05,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=309, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2024-06-03 18:37:05,798 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-06-03 18:37:05,798 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 309 flow [2024-06-03 18:37:05,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:05,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:05,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:05,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-03 18:37:05,799 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)] === [2024-06-03 18:37:05,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:05,799 INFO L85 PathProgramCache]: Analyzing trace with hash -474059682, now seen corresponding path program 4 times [2024-06-03 18:37:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:05,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336621230] [2024-06-03 18:37:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:05,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:05,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336621230] [2024-06-03 18:37:05,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336621230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:05,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:05,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:05,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195665991] [2024-06-03 18:37:05,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:05,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:05,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:05,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:05,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:05,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:05,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 309 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:05,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:05,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:05,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:06,003 INFO L124 PetriNetUnfolderBase]: 99/215 cut-off events. [2024-06-03 18:37:06,003 INFO L125 PetriNetUnfolderBase]: For 1148/1150 co-relation queries the response was YES. [2024-06-03 18:37:06,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 215 events. 99/215 cut-off events. For 1148/1150 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 817 event pairs, 28 based on Foata normal form. 3/217 useless extension candidates. Maximal degree in co-relation 839. Up to 135 conditions per place. [2024-06-03 18:37:06,004 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 34 selfloop transitions, 21 changer transitions 0/59 dead transitions. [2024-06-03 18:37:06,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 463 flow [2024-06-03 18:37:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:06,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-03 18:37:06,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-03 18:37:06,006 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 309 flow. Second operand 8 states and 126 transitions. [2024-06-03 18:37:06,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 463 flow [2024-06-03 18:37:06,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 59 transitions, 417 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:06,009 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 330 flow [2024-06-03 18:37:06,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=330, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-06-03 18:37:06,010 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-03 18:37:06,010 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 330 flow [2024-06-03 18:37:06,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:06,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:06,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:06,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-03 18:37:06,011 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)] === [2024-06-03 18:37:06,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:06,011 INFO L85 PathProgramCache]: Analyzing trace with hash -548590615, now seen corresponding path program 1 times [2024-06-03 18:37:06,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:06,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524568366] [2024-06-03 18:37:06,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:06,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:06,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:06,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:06,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524568366] [2024-06-03 18:37:06,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524568366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:06,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:06,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:06,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884532464] [2024-06-03 18:37:06,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:06,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:06,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:06,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:06,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:06,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:06,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 330 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:06,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:06,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:06,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:06,262 INFO L124 PetriNetUnfolderBase]: 103/223 cut-off events. [2024-06-03 18:37:06,262 INFO L125 PetriNetUnfolderBase]: For 1347/1349 co-relation queries the response was YES. [2024-06-03 18:37:06,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 223 events. 103/223 cut-off events. For 1347/1349 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 840 event pairs, 15 based on Foata normal form. 4/226 useless extension candidates. Maximal degree in co-relation 888. Up to 121 conditions per place. [2024-06-03 18:37:06,264 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 44 selfloop transitions, 13 changer transitions 0/61 dead transitions. [2024-06-03 18:37:06,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 504 flow [2024-06-03 18:37:06,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:37:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:37:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-03 18:37:06,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-03 18:37:06,277 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 330 flow. Second operand 6 states and 99 transitions. [2024-06-03 18:37:06,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 504 flow [2024-06-03 18:37:06,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 61 transitions, 453 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:06,281 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 315 flow [2024-06-03 18:37:06,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=315, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2024-06-03 18:37:06,282 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-03 18:37:06,282 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 315 flow [2024-06-03 18:37:06,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:06,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:06,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:06,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-03 18:37:06,283 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)] === [2024-06-03 18:37:06,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash -548472505, now seen corresponding path program 2 times [2024-06-03 18:37:06,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:06,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017067438] [2024-06-03 18:37:06,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:06,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:06,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017067438] [2024-06-03 18:37:06,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017067438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:06,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:06,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:06,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260424935] [2024-06-03 18:37:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:06,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:06,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:06,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:06,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:06,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:06,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 315 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:06,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:06,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:06,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:06,495 INFO L124 PetriNetUnfolderBase]: 107/231 cut-off events. [2024-06-03 18:37:06,495 INFO L125 PetriNetUnfolderBase]: For 1483/1485 co-relation queries the response was YES. [2024-06-03 18:37:06,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949 conditions, 231 events. 107/231 cut-off events. For 1483/1485 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 887 event pairs, 26 based on Foata normal form. 4/234 useless extension candidates. Maximal degree in co-relation 914. Up to 160 conditions per place. [2024-06-03 18:37:06,497 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 44 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2024-06-03 18:37:06,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 461 flow [2024-06-03 18:37:06,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:37:06,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:37:06,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-03 18:37:06,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.55 [2024-06-03 18:37:06,498 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 315 flow. Second operand 6 states and 99 transitions. [2024-06-03 18:37:06,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 461 flow [2024-06-03 18:37:06,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 433 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-03 18:37:06,503 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 325 flow [2024-06-03 18:37:06,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-06-03 18:37:06,504 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-03 18:37:06,504 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 325 flow [2024-06-03 18:37:06,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:06,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:06,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:06,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-03 18:37:06,505 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)] === [2024-06-03 18:37:06,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1626902009, now seen corresponding path program 3 times [2024-06-03 18:37:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140502944] [2024-06-03 18:37:06,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:06,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:06,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:06,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140502944] [2024-06-03 18:37:06,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140502944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:06,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:06,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:06,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153371700] [2024-06-03 18:37:06,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:06,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:06,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:06,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:06,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:06,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:06,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:06,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:06,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:06,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:06,738 INFO L124 PetriNetUnfolderBase]: 104/226 cut-off events. [2024-06-03 18:37:06,738 INFO L125 PetriNetUnfolderBase]: For 1490/1492 co-relation queries the response was YES. [2024-06-03 18:37:06,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 913 conditions, 226 events. 104/226 cut-off events. For 1490/1492 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 860 event pairs, 14 based on Foata normal form. 4/229 useless extension candidates. Maximal degree in co-relation 877. Up to 140 conditions per place. [2024-06-03 18:37:06,740 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 44 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2024-06-03 18:37:06,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 459 flow [2024-06-03 18:37:06,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:37:06,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:37:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-03 18:37:06,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5733333333333334 [2024-06-03 18:37:06,741 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 325 flow. Second operand 5 states and 86 transitions. [2024-06-03 18:37:06,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 459 flow [2024-06-03 18:37:06,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 423 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:06,749 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 317 flow [2024-06-03 18:37:06,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2024-06-03 18:37:06,749 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-03 18:37:06,750 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 317 flow [2024-06-03 18:37:06,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:06,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:06,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:06,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-03 18:37:06,750 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)] === [2024-06-03 18:37:06,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:06,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1626717311, now seen corresponding path program 1 times [2024-06-03 18:37:06,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:06,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959423633] [2024-06-03 18:37:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:06,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:06,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:06,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959423633] [2024-06-03 18:37:06,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959423633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:06,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:06,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:06,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614530904] [2024-06-03 18:37:06,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:06,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:06,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:06,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:06,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:06,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:06,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 317 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:06,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:06,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:06,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:07,011 INFO L124 PetriNetUnfolderBase]: 108/234 cut-off events. [2024-06-03 18:37:07,012 INFO L125 PetriNetUnfolderBase]: For 1701/1703 co-relation queries the response was YES. [2024-06-03 18:37:07,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 930 conditions, 234 events. 108/234 cut-off events. For 1701/1703 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 907 event pairs, 25 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 894. Up to 166 conditions per place. [2024-06-03 18:37:07,013 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 11 changer transitions 0/57 dead transitions. [2024-06-03 18:37:07,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 447 flow [2024-06-03 18:37:07,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-03 18:37:07,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-03 18:37:07,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 83 transitions. [2024-06-03 18:37:07,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533333333333333 [2024-06-03 18:37:07,015 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 317 flow. Second operand 5 states and 83 transitions. [2024-06-03 18:37:07,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 447 flow [2024-06-03 18:37:07,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 57 transitions, 417 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-03 18:37:07,019 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 325 flow [2024-06-03 18:37:07,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2024-06-03 18:37:07,020 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-06-03 18:37:07,020 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 325 flow [2024-06-03 18:37:07,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:07,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:07,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:07,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-03 18:37:07,021 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)] === [2024-06-03 18:37:07,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:07,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2032585937, now seen corresponding path program 2 times [2024-06-03 18:37:07,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:07,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912288209] [2024-06-03 18:37:07,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:07,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:07,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:07,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912288209] [2024-06-03 18:37:07,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912288209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:07,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:07,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:07,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377712297] [2024-06-03 18:37:07,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:07,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:07,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:07,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:07,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:07,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:07,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:07,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:07,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:07,209 INFO L124 PetriNetUnfolderBase]: 112/242 cut-off events. [2024-06-03 18:37:07,210 INFO L125 PetriNetUnfolderBase]: For 1647/1649 co-relation queries the response was YES. [2024-06-03 18:37:07,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 242 events. 112/242 cut-off events. For 1647/1649 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 949 event pairs, 27 based on Foata normal form. 4/245 useless extension candidates. Maximal degree in co-relation 927. Up to 177 conditions per place. [2024-06-03 18:37:07,211 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 43 selfloop transitions, 12 changer transitions 0/59 dead transitions. [2024-06-03 18:37:07,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 463 flow [2024-06-03 18:37:07,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:37:07,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:37:07,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 96 transitions. [2024-06-03 18:37:07,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2024-06-03 18:37:07,213 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 325 flow. Second operand 6 states and 96 transitions. [2024-06-03 18:37:07,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 463 flow [2024-06-03 18:37:07,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 59 transitions, 435 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 18:37:07,216 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 337 flow [2024-06-03 18:37:07,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=337, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2024-06-03 18:37:07,217 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2024-06-03 18:37:07,217 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 337 flow [2024-06-03 18:37:07,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:07,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:07,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:07,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-03 18:37:07,218 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)] === [2024-06-03 18:37:07,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:07,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1802370017, now seen corresponding path program 3 times [2024-06-03 18:37:07,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:07,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054015348] [2024-06-03 18:37:07,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:07,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:07,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054015348] [2024-06-03 18:37:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054015348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:07,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:07,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-03 18:37:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558722010] [2024-06-03 18:37:07,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:07,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-03 18:37:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-03 18:37:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-03 18:37:07,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:07,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 337 flow. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:07,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:07,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:07,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:07,399 INFO L124 PetriNetUnfolderBase]: 109/237 cut-off events. [2024-06-03 18:37:07,399 INFO L125 PetriNetUnfolderBase]: For 1440/1442 co-relation queries the response was YES. [2024-06-03 18:37:07,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 237 events. 109/237 cut-off events. For 1440/1442 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 930 event pairs, 24 based on Foata normal form. 4/240 useless extension candidates. Maximal degree in co-relation 875. Up to 152 conditions per place. [2024-06-03 18:37:07,401 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 42 selfloop transitions, 14 changer transitions 0/60 dead transitions. [2024-06-03 18:37:07,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 469 flow [2024-06-03 18:37:07,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-03 18:37:07,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-03 18:37:07,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2024-06-03 18:37:07,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-03 18:37:07,402 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 337 flow. Second operand 6 states and 95 transitions. [2024-06-03 18:37:07,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 469 flow [2024-06-03 18:37:07,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 439 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-03 18:37:07,405 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 339 flow [2024-06-03 18:37:07,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=65, 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=339, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2024-06-03 18:37:07,406 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-06-03 18:37:07,406 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 339 flow [2024-06-03 18:37:07,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 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) [2024-06-03 18:37:07,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:07,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:07,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-03 18:37:07,407 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)] === [2024-06-03 18:37:07,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash 88656337, now seen corresponding path program 1 times [2024-06-03 18:37:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:07,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237122133] [2024-06-03 18:37:07,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:07,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:07,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:07,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237122133] [2024-06-03 18:37:07,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237122133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:07,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:07,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573171837] [2024-06-03 18:37:07,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:07,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:07,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:07,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 339 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:07,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:07,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:07,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:07,675 INFO L124 PetriNetUnfolderBase]: 139/311 cut-off events. [2024-06-03 18:37:07,675 INFO L125 PetriNetUnfolderBase]: For 3111/3113 co-relation queries the response was YES. [2024-06-03 18:37:07,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 311 events. 139/311 cut-off events. For 3111/3113 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1380 event pairs, 38 based on Foata normal form. 8/318 useless extension candidates. Maximal degree in co-relation 1209. Up to 96 conditions per place. [2024-06-03 18:37:07,677 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 19 changer transitions 12/73 dead transitions. [2024-06-03 18:37:07,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 579 flow [2024-06-03 18:37:07,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:07,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-03 18:37:07,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296296296296297 [2024-06-03 18:37:07,678 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 339 flow. Second operand 9 states and 143 transitions. [2024-06-03 18:37:07,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 579 flow [2024-06-03 18:37:07,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 543 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-03 18:37:07,684 INFO L231 Difference]: Finished difference. Result has 76 places, 48 transitions, 322 flow [2024-06-03 18:37:07,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=322, PETRI_PLACES=76, PETRI_TRANSITIONS=48} [2024-06-03 18:37:07,684 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 47 predicate places. [2024-06-03 18:37:07,684 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 48 transitions, 322 flow [2024-06-03 18:37:07,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:07,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:07,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:07,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-03 18:37:07,685 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)] === [2024-06-03 18:37:07,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:07,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1828370805, now seen corresponding path program 2 times [2024-06-03 18:37:07,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:07,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049189577] [2024-06-03 18:37:07,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:07,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:07,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:07,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:07,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049189577] [2024-06-03 18:37:07,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049189577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:07,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:07,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:07,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028465134] [2024-06-03 18:37:07,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:07,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:07,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:07,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:07,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:07,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 48 transitions, 322 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:07,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:07,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:07,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:07,926 INFO L124 PetriNetUnfolderBase]: 145/323 cut-off events. [2024-06-03 18:37:07,926 INFO L125 PetriNetUnfolderBase]: For 4584/4586 co-relation queries the response was YES. [2024-06-03 18:37:07,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 323 events. 145/323 cut-off events. For 4584/4586 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1478 event pairs, 48 based on Foata normal form. 8/330 useless extension candidates. Maximal degree in co-relation 1376. Up to 159 conditions per place. [2024-06-03 18:37:07,928 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 38 selfloop transitions, 19 changer transitions 6/67 dead transitions. [2024-06-03 18:37:07,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 544 flow [2024-06-03 18:37:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-03 18:37:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-03 18:37:07,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-03 18:37:07,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51 [2024-06-03 18:37:07,930 INFO L175 Difference]: Start difference. First operand has 76 places, 48 transitions, 322 flow. Second operand 10 states and 153 transitions. [2024-06-03 18:37:07,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 544 flow [2024-06-03 18:37:07,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 67 transitions, 506 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:07,936 INFO L231 Difference]: Finished difference. Result has 75 places, 46 transitions, 316 flow [2024-06-03 18:37:07,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=316, PETRI_PLACES=75, PETRI_TRANSITIONS=46} [2024-06-03 18:37:07,937 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2024-06-03 18:37:07,937 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 46 transitions, 316 flow [2024-06-03 18:37:07,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:07,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:07,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:07,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-03 18:37:07,937 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)] === [2024-06-03 18:37:07,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash 177369967, now seen corresponding path program 3 times [2024-06-03 18:37:07,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:07,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992432204] [2024-06-03 18:37:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:07,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:08,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:08,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992432204] [2024-06-03 18:37:08,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992432204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:08,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:08,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:08,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84719689] [2024-06-03 18:37:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:08,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:08,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:08,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:08,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:08,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:08,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 46 transitions, 316 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:08,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:08,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:08,211 INFO L124 PetriNetUnfolderBase]: 121/271 cut-off events. [2024-06-03 18:37:08,212 INFO L125 PetriNetUnfolderBase]: For 3331/3333 co-relation queries the response was YES. [2024-06-03 18:37:08,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 271 events. 121/271 cut-off events. For 3331/3333 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1163 event pairs, 40 based on Foata normal form. 10/280 useless extension candidates. Maximal degree in co-relation 1098. Up to 159 conditions per place. [2024-06-03 18:37:08,213 INFO L140 encePairwiseOnDemand]: 22/30 looper letters, 27 selfloop transitions, 14 changer transitions 15/60 dead transitions. [2024-06-03 18:37:08,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 60 transitions, 472 flow [2024-06-03 18:37:08,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-03 18:37:08,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-03 18:37:08,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 136 transitions. [2024-06-03 18:37:08,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-06-03 18:37:08,215 INFO L175 Difference]: Start difference. First operand has 75 places, 46 transitions, 316 flow. Second operand 9 states and 136 transitions. [2024-06-03 18:37:08,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 60 transitions, 472 flow [2024-06-03 18:37:08,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 60 transitions, 432 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-03 18:37:08,223 INFO L231 Difference]: Finished difference. Result has 73 places, 41 transitions, 268 flow [2024-06-03 18:37:08,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=268, PETRI_PLACES=73, PETRI_TRANSITIONS=41} [2024-06-03 18:37:08,224 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2024-06-03 18:37:08,224 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 41 transitions, 268 flow [2024-06-03 18:37:08,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:08,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:08,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-03 18:37:08,225 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)] === [2024-06-03 18:37:08,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:08,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1105793711, now seen corresponding path program 4 times [2024-06-03 18:37:08,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:08,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443520970] [2024-06-03 18:37:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:08,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:08,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443520970] [2024-06-03 18:37:08,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443520970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:08,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:08,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:08,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267262543] [2024-06-03 18:37:08,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:08,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:08,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:08,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:08,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:08,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:08,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 41 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:08,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:08,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:08,460 INFO L124 PetriNetUnfolderBase]: 111/247 cut-off events. [2024-06-03 18:37:08,461 INFO L125 PetriNetUnfolderBase]: For 2939/2943 co-relation queries the response was YES. [2024-06-03 18:37:08,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1018 conditions, 247 events. 111/247 cut-off events. For 2939/2943 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1046 event pairs, 42 based on Foata normal form. 12/258 useless extension candidates. Maximal degree in co-relation 982. Up to 155 conditions per place. [2024-06-03 18:37:08,462 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 11 changer transitions 9/50 dead transitions. [2024-06-03 18:37:08,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 50 transitions, 392 flow [2024-06-03 18:37:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:08,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 108 transitions. [2024-06-03 18:37:08,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2024-06-03 18:37:08,463 INFO L175 Difference]: Start difference. First operand has 73 places, 41 transitions, 268 flow. Second operand 7 states and 108 transitions. [2024-06-03 18:37:08,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 50 transitions, 392 flow [2024-06-03 18:37:08,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 50 transitions, 354 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-03 18:37:08,467 INFO L231 Difference]: Finished difference. Result has 64 places, 38 transitions, 236 flow [2024-06-03 18:37:08,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=64, PETRI_TRANSITIONS=38} [2024-06-03 18:37:08,468 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 35 predicate places. [2024-06-03 18:37:08,468 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 38 transitions, 236 flow [2024-06-03 18:37:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:08,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:08,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-03 18:37:08,469 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)] === [2024-06-03 18:37:08,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:08,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1111363853, now seen corresponding path program 1 times [2024-06-03 18:37:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227045272] [2024-06-03 18:37:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:08,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:08,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:08,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227045272] [2024-06-03 18:37:08,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227045272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:08,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:08,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:08,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908287475] [2024-06-03 18:37:08,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:08,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:08,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:08,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:08,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:08,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:08,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 38 transitions, 236 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:08,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:08,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:08,696 INFO L124 PetriNetUnfolderBase]: 99/225 cut-off events. [2024-06-03 18:37:08,696 INFO L125 PetriNetUnfolderBase]: For 2090/2090 co-relation queries the response was YES. [2024-06-03 18:37:08,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 225 events. 99/225 cut-off events. For 2090/2090 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 896 event pairs, 41 based on Foata normal form. 8/232 useless extension candidates. Maximal degree in co-relation 840. Up to 138 conditions per place. [2024-06-03 18:37:08,697 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 8 changer transitions 9/47 dead transitions. [2024-06-03 18:37:08,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 47 transitions, 354 flow [2024-06-03 18:37:08,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-06-03 18:37:08,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-03 18:37:08,698 INFO L175 Difference]: Start difference. First operand has 64 places, 38 transitions, 236 flow. Second operand 7 states and 106 transitions. [2024-06-03 18:37:08,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 47 transitions, 354 flow [2024-06-03 18:37:08,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 47 transitions, 322 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:08,702 INFO L231 Difference]: Finished difference. Result has 61 places, 35 transitions, 206 flow [2024-06-03 18:37:08,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=61, PETRI_TRANSITIONS=35} [2024-06-03 18:37:08,702 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 32 predicate places. [2024-06-03 18:37:08,702 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 35 transitions, 206 flow [2024-06-03 18:37:08,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:08,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:08,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-03 18:37:08,703 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)] === [2024-06-03 18:37:08,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:08,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1111371293, now seen corresponding path program 2 times [2024-06-03 18:37:08,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:08,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114832485] [2024-06-03 18:37:08,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:08,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:08,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:08,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114832485] [2024-06-03 18:37:08,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114832485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:08,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:08,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:08,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458593874] [2024-06-03 18:37:08,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:08,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:08,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:08,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:08,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 35 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:08,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:08,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:08,947 INFO L124 PetriNetUnfolderBase]: 90/212 cut-off events. [2024-06-03 18:37:08,948 INFO L125 PetriNetUnfolderBase]: For 1424/1424 co-relation queries the response was YES. [2024-06-03 18:37:08,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 212 events. 90/212 cut-off events. For 1424/1424 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 839 event pairs, 35 based on Foata normal form. 6/217 useless extension candidates. Maximal degree in co-relation 736. Up to 122 conditions per place. [2024-06-03 18:37:08,949 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 26 selfloop transitions, 7 changer transitions 7/44 dead transitions. [2024-06-03 18:37:08,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 44 transitions, 308 flow [2024-06-03 18:37:08,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:08,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:08,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-03 18:37:08,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49523809523809526 [2024-06-03 18:37:08,950 INFO L175 Difference]: Start difference. First operand has 61 places, 35 transitions, 206 flow. Second operand 7 states and 104 transitions. [2024-06-03 18:37:08,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 44 transitions, 308 flow [2024-06-03 18:37:08,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 44 transitions, 288 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-03 18:37:08,953 INFO L231 Difference]: Finished difference. Result has 59 places, 32 transitions, 181 flow [2024-06-03 18:37:08,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=32} [2024-06-03 18:37:08,953 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 30 predicate places. [2024-06-03 18:37:08,954 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 32 transitions, 181 flow [2024-06-03 18:37:08,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:08,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:08,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:08,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-03 18:37:08,954 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)] === [2024-06-03 18:37:08,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:08,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1105645841, now seen corresponding path program 5 times [2024-06-03 18:37:08,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:08,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471473562] [2024-06-03 18:37:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:09,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:09,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471473562] [2024-06-03 18:37:09,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471473562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:09,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:09,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:09,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841998058] [2024-06-03 18:37:09,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:09,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:09,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:09,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:09,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:09,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:09,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 32 transitions, 181 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:09,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:09,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:09,180 INFO L124 PetriNetUnfolderBase]: 68/162 cut-off events. [2024-06-03 18:37:09,180 INFO L125 PetriNetUnfolderBase]: For 846/846 co-relation queries the response was YES. [2024-06-03 18:37:09,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 562 conditions, 162 events. 68/162 cut-off events. For 846/846 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 554 event pairs, 24 based on Foata normal form. 6/167 useless extension candidates. Maximal degree in co-relation 532. Up to 85 conditions per place. [2024-06-03 18:37:09,181 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 22 selfloop transitions, 4 changer transitions 11/41 dead transitions. [2024-06-03 18:37:09,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 41 transitions, 281 flow [2024-06-03 18:37:09,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:09,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-03 18:37:09,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49047619047619045 [2024-06-03 18:37:09,182 INFO L175 Difference]: Start difference. First operand has 59 places, 32 transitions, 181 flow. Second operand 7 states and 103 transitions. [2024-06-03 18:37:09,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 41 transitions, 281 flow [2024-06-03 18:37:09,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 41 transitions, 254 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 18:37:09,184 INFO L231 Difference]: Finished difference. Result has 55 places, 28 transitions, 141 flow [2024-06-03 18:37:09,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=141, PETRI_PLACES=55, PETRI_TRANSITIONS=28} [2024-06-03 18:37:09,185 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 26 predicate places. [2024-06-03 18:37:09,185 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 28 transitions, 141 flow [2024-06-03 18:37:09,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:09,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:09,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-03 18:37:09,186 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)] === [2024-06-03 18:37:09,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -48092067, now seen corresponding path program 3 times [2024-06-03 18:37:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:09,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257263239] [2024-06-03 18:37:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:09,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:09,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:09,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:09,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257263239] [2024-06-03 18:37:09,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257263239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:09,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:09,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718003307] [2024-06-03 18:37:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:09,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:09,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:09,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:09,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 28 transitions, 141 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:09,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:09,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:09,421 INFO L124 PetriNetUnfolderBase]: 69/165 cut-off events. [2024-06-03 18:37:09,421 INFO L125 PetriNetUnfolderBase]: For 1094/1094 co-relation queries the response was YES. [2024-06-03 18:37:09,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 165 events. 69/165 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 592 event pairs, 28 based on Foata normal form. 6/171 useless extension candidates. Maximal degree in co-relation 558. Up to 56 conditions per place. [2024-06-03 18:37:09,422 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 24 selfloop transitions, 7 changer transitions 6/41 dead transitions. [2024-06-03 18:37:09,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 41 transitions, 269 flow [2024-06-03 18:37:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-03 18:37:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-03 18:37:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-03 18:37:09,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-03 18:37:09,423 INFO L175 Difference]: Start difference. First operand has 55 places, 28 transitions, 141 flow. Second operand 8 states and 118 transitions. [2024-06-03 18:37:09,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 41 transitions, 269 flow [2024-06-03 18:37:09,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 232 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-03 18:37:09,425 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 121 flow [2024-06-03 18:37:09,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=121, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2024-06-03 18:37:09,425 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 18 predicate places. [2024-06-03 18:37:09,425 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 121 flow [2024-06-03 18:37:09,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:09,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:09,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-03 18:37:09,426 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)] === [2024-06-03 18:37:09,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash -48099507, now seen corresponding path program 4 times [2024-06-03 18:37:09,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:09,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816884533] [2024-06-03 18:37:09,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:09,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:09,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816884533] [2024-06-03 18:37:09,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816884533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:09,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:09,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:09,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468163747] [2024-06-03 18:37:09,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:09,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:09,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:09,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:09,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:09,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:09,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 121 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:09,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:09,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:09,648 INFO L124 PetriNetUnfolderBase]: 45/113 cut-off events. [2024-06-03 18:37:09,649 INFO L125 PetriNetUnfolderBase]: For 510/510 co-relation queries the response was YES. [2024-06-03 18:37:09,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 113 events. 45/113 cut-off events. For 510/510 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 327 event pairs, 20 based on Foata normal form. 8/121 useless extension candidates. Maximal degree in co-relation 326. Up to 52 conditions per place. [2024-06-03 18:37:09,649 INFO L140 encePairwiseOnDemand]: 23/30 looper letters, 16 selfloop transitions, 3 changer transitions 11/34 dead transitions. [2024-06-03 18:37:09,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 34 transitions, 199 flow [2024-06-03 18:37:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:09,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-06-03 18:37:09,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48095238095238096 [2024-06-03 18:37:09,650 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 121 flow. Second operand 7 states and 101 transitions. [2024-06-03 18:37:09,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 34 transitions, 199 flow [2024-06-03 18:37:09,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 183 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-03 18:37:09,653 INFO L231 Difference]: Finished difference. Result has 45 places, 21 transitions, 82 flow [2024-06-03 18:37:09,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=82, PETRI_PLACES=45, PETRI_TRANSITIONS=21} [2024-06-03 18:37:09,656 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2024-06-03 18:37:09,656 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 21 transitions, 82 flow [2024-06-03 18:37:09,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-03 18:37:09,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-03 18:37:09,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-03 18:37:09,657 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)] === [2024-06-03 18:37:09,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-03 18:37:09,657 INFO L85 PathProgramCache]: Analyzing trace with hash -38895297, now seen corresponding path program 5 times [2024-06-03 18:37:09,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-03 18:37:09,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989588940] [2024-06-03 18:37:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-03 18:37:09,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-03 18:37:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-03 18:37:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-03 18:37:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-03 18:37:09,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989588940] [2024-06-03 18:37:09,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989588940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-03 18:37:09,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-03 18:37:09,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-03 18:37:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593428130] [2024-06-03 18:37:09,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-03 18:37:09,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-03 18:37:09,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-03 18:37:09,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-03 18:37:09,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-03 18:37:09,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 30 [2024-06-03 18:37:09,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 21 transitions, 82 flow. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-03 18:37:09,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 30 [2024-06-03 18:37:09,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-03 18:37:09,854 INFO L124 PetriNetUnfolderBase]: 20/60 cut-off events. [2024-06-03 18:37:09,854 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-06-03 18:37:09,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 60 events. 20/60 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 92 event pairs, 1 based on Foata normal form. 6/66 useless extension candidates. Maximal degree in co-relation 143. Up to 24 conditions per place. [2024-06-03 18:37:09,855 INFO L140 encePairwiseOnDemand]: 24/30 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2024-06-03 18:37:09,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 122 flow [2024-06-03 18:37:09,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-03 18:37:09,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-03 18:37:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 93 transitions. [2024-06-03 18:37:09,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-03 18:37:09,856 INFO L175 Difference]: Start difference. First operand has 45 places, 21 transitions, 82 flow. Second operand 7 states and 93 transitions. [2024-06-03 18:37:09,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 122 flow [2024-06-03 18:37:09,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 26 transitions, 102 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-03 18:37:09,857 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2024-06-03 18:37:09,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=28, 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=34, PETRI_TRANSITIONS=0} [2024-06-03 18:37:09,858 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-06-03 18:37:09,858 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2024-06-03 18:37:09,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-03 18:37:09,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-03 18:37:09,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-03 18:37:09,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-03 18:37:09,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-03 18:37:09,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-03 18:37:09,864 INFO L445 BasicCegarLoop]: Path program histogram: [5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-06-03 18:37:09,866 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-03 18:37:09,866 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-03 18:37:09,869 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-03 18:37:09,869 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-03 18:37:09,870 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.06 06:37:09 BasicIcfg [2024-06-03 18:37:09,870 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-03 18:37:09,870 INFO L158 Benchmark]: Toolchain (without parser) took 8466.34ms. Allocated memory was 146.8MB in the beginning and 306.2MB in the end (delta: 159.4MB). Free memory was 85.2MB in the beginning and 193.2MB in the end (delta: -108.0MB). Peak memory consumption was 53.5MB. Max. memory is 16.1GB. [2024-06-03 18:37:09,870 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 108.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 18:37:09,870 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory was 104.5MB in the beginning and 104.4MB in the end (delta: 69.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-03 18:37:09,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 502.07ms. Allocated memory is still 146.8MB. Free memory was 85.0MB in the beginning and 114.1MB in the end (delta: -29.2MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2024-06-03 18:37:09,871 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.90ms. Allocated memory was 146.8MB in the beginning and 201.3MB in the end (delta: 54.5MB). Free memory was 114.1MB in the beginning and 171.5MB in the end (delta: -57.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2024-06-03 18:37:09,871 INFO L158 Benchmark]: Boogie Preprocessor took 40.89ms. Allocated memory is still 201.3MB. Free memory was 171.5MB in the beginning and 169.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-03 18:37:09,871 INFO L158 Benchmark]: RCFGBuilder took 403.99ms. Allocated memory is still 201.3MB. Free memory was 169.3MB in the beginning and 147.3MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-06-03 18:37:09,872 INFO L158 Benchmark]: TraceAbstraction took 7434.97ms. Allocated memory was 201.3MB in the beginning and 306.2MB in the end (delta: 104.9MB). Free memory was 146.3MB in the beginning and 193.2MB in the end (delta: -46.9MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. [2024-06-03 18:37:09,873 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.15ms. Allocated memory is still 146.8MB. Free memory is still 108.0MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.15ms. Allocated memory is still 146.8MB. Free memory was 104.5MB in the beginning and 104.4MB in the end (delta: 69.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 502.07ms. Allocated memory is still 146.8MB. Free memory was 85.0MB in the beginning and 114.1MB in the end (delta: -29.2MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.90ms. Allocated memory was 146.8MB in the beginning and 201.3MB in the end (delta: 54.5MB). Free memory was 114.1MB in the beginning and 171.5MB in the end (delta: -57.4MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.89ms. Allocated memory is still 201.3MB. Free memory was 171.5MB in the beginning and 169.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 403.99ms. Allocated memory is still 201.3MB. Free memory was 169.3MB in the beginning and 147.3MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 7434.97ms. Allocated memory was 201.3MB in the beginning and 306.2MB in the end (delta: 104.9MB). Free memory was 146.3MB in the beginning and 193.2MB in the end (delta: -46.9MB). Peak memory consumption was 56.9MB. 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, 47 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: 7.3s, OverallIterations: 29, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1439 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1106 mSDsluCounter, 296 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 163 mSDsCounter, 169 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4246 IncrementalHoareTripleChecker+Invalid, 4415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 169 mSolverCounterUnsat, 133 mSDtfsCounter, 4246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 179 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=339occurred in iteration=19, InterpolantAutomatonStates: 180, 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, 3.4s InterpolantComputationTime, 434 NumberOfCodeBlocks, 434 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 405 ConstructedInterpolants, 0 QuantifiedInterpolants, 4164 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! [2024-06-03 18:37:09,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE