./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi004.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb4cb34f 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/rfi004.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi004.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-eb4cb34-m [2024-06-21 21:19:55,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-21 21:19:55,269 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-21 21:19:55,275 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-21 21:19:55,277 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-21 21:19:55,298 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-21 21:19:55,299 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-21 21:19:55,299 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-21 21:19:55,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-21 21:19:55,303 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-21 21:19:55,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-21 21:19:55,303 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-21 21:19:55,304 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-21 21:19:55,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-21 21:19:55,305 INFO L153 SettingsManager]: * Use SBE=true [2024-06-21 21:19:55,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-21 21:19:55,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-21 21:19:55,306 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-21 21:19:55,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-21 21:19:55,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-21 21:19:55,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-21 21:19:55,307 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-21 21:19:55,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-21 21:19:55,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-21 21:19:55,308 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-21 21:19:55,308 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-21 21:19:55,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-21 21:19:55,309 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-21 21:19:55,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-21 21:19:55,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-21 21:19:55,310 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-21 21:19:55,310 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-21 21:19:55,310 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 21:19:55,311 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-21 21:19:55,311 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-21 21:19:55,311 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-21 21:19:55,311 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-21 21:19:55,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-21 21:19:55,312 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-21 21:19:55,312 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-21 21:19:55,312 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-21 21:19:55,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-21 21:19:55,313 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-21 21:19:55,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-21 21:19:55,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-21 21:19:55,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-21 21:19:55,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-21 21:19:55,565 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-21 21:19:55,565 INFO L274 PluginConnector]: CDTParser initialized [2024-06-21 21:19:55,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-21 21:19:56,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-21 21:19:56,864 INFO L384 CDTParser]: Found 1 translation units. [2024-06-21 21:19:56,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-21 21:19:56,884 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/591a00bba/f19d154ff7a645d3b3b23a714f67355e/FLAGffa454a20 [2024-06-21 21:19:56,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/591a00bba/f19d154ff7a645d3b3b23a714f67355e [2024-06-21 21:19:56,900 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-21 21:19:56,901 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-21 21:19:56,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi004.yml/witness.yml [2024-06-21 21:19:57,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-21 21:19:57,019 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-21 21:19:57,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-21 21:19:57,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-21 21:19:57,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-21 21:19:57,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 09:19:56" (1/2) ... [2024-06-21 21:19:57,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329ae622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:19:57, skipping insertion in model container [2024-06-21 21:19:57,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.06 09:19:56" (1/2) ... [2024-06-21 21:19:57,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c60dbcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.06 09:19:57, skipping insertion in model container [2024-06-21 21:19:57,027 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:19:57" (2/2) ... [2024-06-21 21:19:57,027 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@329ae622 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57, skipping insertion in model container [2024-06-21 21:19:57,027 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:19:57" (2/2) ... [2024-06-21 21:19:57,028 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-21 21:19:57,077 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-21 21:19:57,078 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-21 21:19:57,078 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)) && (z == 0 || z == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-21 21:19:57,079 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-21 21:19:57,079 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-21 21:19:57,104 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-21 21:19:57,380 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 21:19:57,388 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-21 21:19:57,475 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-21 21:19:57,504 INFO L206 MainTranslator]: Completed translation [2024-06-21 21:19:57,504 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57 WrapperNode [2024-06-21 21:19:57,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-21 21:19:57,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-21 21:19:57,505 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-21 21:19:57,505 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-21 21:19:57,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,552 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-21 21:19:57,552 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-21 21:19:57,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-21 21:19:57,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-21 21:19:57,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-21 21:19:57,570 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,573 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,586 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]. [2024-06-21 21:19:57,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,586 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,608 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-21 21:19:57,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-21 21:19:57,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-21 21:19:57,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-21 21:19:57,613 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (1/1) ... [2024-06-21 21:19:57,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-21 21:19:57,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-21 21:19:57,674 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) [2024-06-21 21:19:57,726 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 [2024-06-21 21:19:57,751 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-21 21:19:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-21 21:19:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-21 21:19:57,752 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-21 21:19:57,752 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-21 21:19:57,753 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-21 21:19:57,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-21 21:19:57,753 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-21 21:19:57,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-21 21:19:57,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-21 21:19:57,754 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-21 21:19:57,893 INFO L244 CfgBuilder]: Building ICFG [2024-06-21 21:19:57,895 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-21 21:19:58,216 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-21 21:19:58,216 INFO L293 CfgBuilder]: Performing block encoding [2024-06-21 21:19:58,355 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-21 21:19:58,355 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-21 21:19:58,356 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 09:19:58 BoogieIcfgContainer [2024-06-21 21:19:58,356 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-21 21:19:58,359 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-21 21:19:58,359 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-21 21:19:58,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-21 21:19:58,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.06 09:19:56" (1/4) ... [2024-06-21 21:19:58,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bba96d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.06 09:19:58, skipping insertion in model container [2024-06-21 21:19:58,362 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 21.06 09:19:57" (2/4) ... [2024-06-21 21:19:58,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bba96d8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 09:19:58, skipping insertion in model container [2024-06-21 21:19:58,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 21.06 09:19:57" (3/4) ... [2024-06-21 21:19:58,368 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bba96d8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 21.06 09:19:58, skipping insertion in model container [2024-06-21 21:19:58,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.06 09:19:58" (4/4) ... [2024-06-21 21:19:58,369 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-21 21:19:58,383 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-21 21:19:58,383 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-21 21:19:58,384 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-21 21:19:58,418 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-21 21:19:58,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 21:19:58,475 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-21 21:19:58,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 21:19:58,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-21 21:19:58,477 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-21 21:19:58,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-21 21:19:58,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-21 21:19:58,497 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;@794c51f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-21 21:19:58,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-21 21:19:58,500 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-21 21:19:58,501 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-21 21:19:58,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-21 21:19:58,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:19:58,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-21 21:19:58,502 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)] === [2024-06-21 21:19:58,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:19:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash 329103778, now seen corresponding path program 1 times [2024-06-21 21:19:58,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:19:58,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956699858] [2024-06-21 21:19:58,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:19:58,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:19:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:19:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:19:59,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:19:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956699858] [2024-06-21 21:19:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956699858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:19:59,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:19:59,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-21 21:19:59,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885291847] [2024-06-21 21:19:59,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:19:59,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-21 21:19:59,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:19:59,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-21 21:19:59,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-21 21:19:59,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-06-21 21:19:59,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-06-21 21:19:59,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:19:59,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-06-21 21:19:59,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:19:59,433 INFO L124 PetriNetUnfolderBase]: 131/269 cut-off events. [2024-06-21 21:19:59,433 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-21 21:19:59,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 269 events. 131/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1071 event pairs, 75 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-21 21:19:59,438 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-21 21:19:59,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 115 flow [2024-06-21 21:19:59,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-21 21:19:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-21 21:19:59,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-21 21:19:59,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-21 21:19:59,449 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 61 transitions. [2024-06-21 21:19:59,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 115 flow [2024-06-21 21:19:59,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-21 21:19:59,453 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-21 21:19:59,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-21 21:19:59,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-21 21:19:59,457 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-21 21:19:59,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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) [2024-06-21 21:19:59,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:19:59,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:19:59,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-21 21:19:59,458 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)] === [2024-06-21 21:19:59,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:19:59,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1558109713, now seen corresponding path program 1 times [2024-06-21 21:19:59,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:19:59,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462229919] [2024-06-21 21:19:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:19:59,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:19:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:19:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:19:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:19:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462229919] [2024-06-21 21:19:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462229919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:19:59,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:19:59,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-21 21:19:59,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829525290] [2024-06-21 21:19:59,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:19:59,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-21 21:19:59,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:19:59,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-21 21:19:59,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-21 21:20:00,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 21:20:00,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-06-21 21:20:00,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:00,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 21:20:00,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:00,106 INFO L124 PetriNetUnfolderBase]: 147/286 cut-off events. [2024-06-21 21:20:00,107 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-06-21 21:20:00,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 286 events. 147/286 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1095 event pairs, 59 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 634. Up to 244 conditions per place. [2024-06-21 21:20:00,109 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-21 21:20:00,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 163 flow [2024-06-21 21:20:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-21 21:20:00,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-21 21:20:00,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-21 21:20:00,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015625 [2024-06-21 21:20:00,110 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 77 transitions. [2024-06-21 21:20:00,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 163 flow [2024-06-21 21:20:00,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-21 21:20:00,112 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-21 21:20:00,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-21 21:20:00,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-21 21:20:00,113 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-21 21:20:00,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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) [2024-06-21 21:20:00,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:00,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:00,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-21 21:20:00,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:00,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:00,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2147284969, now seen corresponding path program 1 times [2024-06-21 21:20:00,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:00,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456521458] [2024-06-21 21:20:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:00,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:00,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:00,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:00,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456521458] [2024-06-21 21:20:00,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456521458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:00,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:00,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 21:20:00,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008383519] [2024-06-21 21:20:00,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:00,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 21:20:00,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 21:20:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-21 21:20:00,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-21 21:20:00,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 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) [2024-06-21 21:20:00,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:00,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-21 21:20:00,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:00,919 INFO L124 PetriNetUnfolderBase]: 123/252 cut-off events. [2024-06-21 21:20:00,920 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-06-21 21:20:00,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 252 events. 123/252 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 970 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 617. Up to 219 conditions per place. [2024-06-21 21:20:00,924 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 23 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-21 21:20:00,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 173 flow [2024-06-21 21:20:00,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-21 21:20:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-21 21:20:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-21 21:20:00,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-21 21:20:00,928 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-21 21:20:00,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 173 flow [2024-06-21 21:20:00,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-21 21:20:00,933 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-21 21:20:00,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-21 21:20:00,934 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-21 21:20:00,934 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-21 21:20:00,934 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) [2024-06-21 21:20:00,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:00,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:00,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-21 21:20:00,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:00,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:00,936 INFO L85 PathProgramCache]: Analyzing trace with hash 260036671, now seen corresponding path program 1 times [2024-06-21 21:20:00,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:00,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259242698] [2024-06-21 21:20:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:00,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:01,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:01,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259242698] [2024-06-21 21:20:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259242698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:01,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:01,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-21 21:20:01,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623459740] [2024-06-21 21:20:01,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:01,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-21 21:20:01,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:01,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-21 21:20:01,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-21 21:20:01,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-21 21:20:01,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-06-21 21:20:01,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:01,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-21 21:20:01,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:01,956 INFO L124 PetriNetUnfolderBase]: 141/279 cut-off events. [2024-06-21 21:20:01,957 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-06-21 21:20:01,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 279 events. 141/279 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1078 event pairs, 24 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 733. Up to 215 conditions per place. [2024-06-21 21:20:01,958 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-21 21:20:01,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 227 flow [2024-06-21 21:20:01,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:20:01,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:20:01,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-21 21:20:01,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-21 21:20:01,960 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 105 transitions. [2024-06-21 21:20:01,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 227 flow [2024-06-21 21:20:01,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 216 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-21 21:20:01,962 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-21 21:20:01,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-21 21:20:01,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-21 21:20:01,963 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-21 21:20:01,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-06-21 21:20:01,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:01,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:01,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-21 21:20:01,964 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)] === [2024-06-21 21:20:01,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:01,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2141323674, now seen corresponding path program 1 times [2024-06-21 21:20:01,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:01,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857774911] [2024-06-21 21:20:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:02,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:02,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:02,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857774911] [2024-06-21 21:20:02,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857774911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:02,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:02,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:20:02,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971514995] [2024-06-21 21:20:02,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:02,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:20:02,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:02,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:20:02,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:20:02,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:02,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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) [2024-06-21 21:20:02,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:02,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:02,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:02,693 INFO L124 PetriNetUnfolderBase]: 139/280 cut-off events. [2024-06-21 21:20:02,693 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-06-21 21:20:02,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 280 events. 139/280 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1078 event pairs, 41 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 797. Up to 242 conditions per place. [2024-06-21 21:20:02,695 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 26 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-21 21:20:02,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 219 flow [2024-06-21 21:20:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:20:02,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:20:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-21 21:20:02,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-21 21:20:02,696 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 85 transitions. [2024-06-21 21:20:02,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 219 flow [2024-06-21 21:20:02,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 203 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-21 21:20:02,698 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-21 21:20:02,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-21 21:20:02,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-21 21:20:02,699 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-21 21:20:02,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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) [2024-06-21 21:20:02,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:02,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:02,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-21 21:20:02,700 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)] === [2024-06-21 21:20:02,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:02,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1019246806, now seen corresponding path program 1 times [2024-06-21 21:20:02,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:02,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705786592] [2024-06-21 21:20:02,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:02,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:03,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:03,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705786592] [2024-06-21 21:20:03,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705786592] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:03,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:03,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:20:03,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60901221] [2024-06-21 21:20:03,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:03,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:20:03,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:03,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:20:03,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:20:03,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:03,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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) [2024-06-21 21:20:03,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:03,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:03,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:03,378 INFO L124 PetriNetUnfolderBase]: 156/306 cut-off events. [2024-06-21 21:20:03,378 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-21 21:20:03,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 306 events. 156/306 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1198 event pairs, 46 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 937. Up to 255 conditions per place. [2024-06-21 21:20:03,380 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-21 21:20:03,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 258 flow [2024-06-21 21:20:03,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:20:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:20:03,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-21 21:20:03,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-21 21:20:03,381 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 89 transitions. [2024-06-21 21:20:03,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 258 flow [2024-06-21 21:20:03,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 241 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 21:20:03,383 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 162 flow [2024-06-21 21:20:03,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-21 21:20:03,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-21 21:20:03,384 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 162 flow [2024-06-21 21:20:03,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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) [2024-06-21 21:20:03,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:03,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:03,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-21 21:20:03,385 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)] === [2024-06-21 21:20:03,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:03,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1956532426, now seen corresponding path program 2 times [2024-06-21 21:20:03,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:03,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278201742] [2024-06-21 21:20:03,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:03,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:03,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:03,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:03,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278201742] [2024-06-21 21:20:03,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278201742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:03,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:03,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-21 21:20:03,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56992766] [2024-06-21 21:20:03,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:03,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-21 21:20:03,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:03,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-21 21:20:03,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-21 21:20:03,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:03,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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) [2024-06-21 21:20:03,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:03,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:03,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:04,068 INFO L124 PetriNetUnfolderBase]: 155/305 cut-off events. [2024-06-21 21:20:04,068 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-21 21:20:04,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 305 events. 155/305 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1227 event pairs, 49 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1006. Up to 246 conditions per place. [2024-06-21 21:20:04,070 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 28 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-21 21:20:04,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 274 flow [2024-06-21 21:20:04,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-21 21:20:04,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-21 21:20:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-21 21:20:04,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-21 21:20:04,072 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 162 flow. Second operand 6 states and 89 transitions. [2024-06-21 21:20:04,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 274 flow [2024-06-21 21:20:04,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 257 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-21 21:20:04,074 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 188 flow [2024-06-21 21:20:04,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-21 21:20:04,074 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-21 21:20:04,074 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 188 flow [2024-06-21 21:20:04,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 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) [2024-06-21 21:20:04,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:04,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:04,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-21 21:20:04,075 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)] === [2024-06-21 21:20:04,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:04,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1956523498, now seen corresponding path program 1 times [2024-06-21 21:20:04,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:04,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686172494] [2024-06-21 21:20:04,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:04,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:04,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:04,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:04,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686172494] [2024-06-21 21:20:04,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686172494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:04,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:04,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:20:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522606886] [2024-06-21 21:20:04,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:04,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:20:04,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:20:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:20:04,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:04,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 188 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-21 21:20:04,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:04,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:04,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:04,801 INFO L124 PetriNetUnfolderBase]: 144/291 cut-off events. [2024-06-21 21:20:04,802 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-06-21 21:20:04,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 291 events. 144/291 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1147 event pairs, 39 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 990. Up to 248 conditions per place. [2024-06-21 21:20:04,804 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-21 21:20:04,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 296 flow [2024-06-21 21:20:04,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:20:04,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:20:04,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-21 21:20:04,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-21 21:20:04,805 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 188 flow. Second operand 7 states and 97 transitions. [2024-06-21 21:20:04,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 296 flow [2024-06-21 21:20:04,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 269 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-21 21:20:04,807 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 200 flow [2024-06-21 21:20:04,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-21 21:20:04,808 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-21 21:20:04,824 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 200 flow [2024-06-21 21:20:04,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-21 21:20:04,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:04,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:04,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-21 21:20:04,825 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)] === [2024-06-21 21:20:04,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:04,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1531878989, now seen corresponding path program 1 times [2024-06-21 21:20:04,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:04,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048130159] [2024-06-21 21:20:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:04,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:05,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:05,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:05,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048130159] [2024-06-21 21:20:05,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048130159] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:05,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:05,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:20:05,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429151376] [2024-06-21 21:20:05,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:05,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:20:05,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:05,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:20:05,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:20:05,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:05,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:20:05,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:05,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:05,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:05,545 INFO L124 PetriNetUnfolderBase]: 170/325 cut-off events. [2024-06-21 21:20:05,545 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-06-21 21:20:05,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 325 events. 170/325 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1279 event pairs, 45 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 1169. Up to 278 conditions per place. [2024-06-21 21:20:05,547 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-21 21:20:05,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 342 flow [2024-06-21 21:20:05,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:20:05,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:20:05,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-21 21:20:05,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-21 21:20:05,549 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 200 flow. Second operand 7 states and 96 transitions. [2024-06-21 21:20:05,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 342 flow [2024-06-21 21:20:05,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 319 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-21 21:20:05,551 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 218 flow [2024-06-21 21:20:05,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-21 21:20:05,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-21 21:20:05,551 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 218 flow [2024-06-21 21:20:05,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:20:05,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:05,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:05,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-21 21:20:05,552 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)] === [2024-06-21 21:20:05,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:05,553 INFO L85 PathProgramCache]: Analyzing trace with hash -522962137, now seen corresponding path program 2 times [2024-06-21 21:20:05,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:05,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483546103] [2024-06-21 21:20:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:05,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:06,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:06,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483546103] [2024-06-21 21:20:06,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483546103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:06,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:06,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:20:06,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111912996] [2024-06-21 21:20:06,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:06,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:20:06,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:06,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:20:06,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:20:06,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:06,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:20:06,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:06,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:06,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:06,317 INFO L124 PetriNetUnfolderBase]: 181/346 cut-off events. [2024-06-21 21:20:06,317 INFO L125 PetriNetUnfolderBase]: For 1714/1714 co-relation queries the response was YES. [2024-06-21 21:20:06,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 346 events. 181/346 cut-off events. For 1714/1714 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1427 event pairs, 52 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1317. Up to 267 conditions per place. [2024-06-21 21:20:06,320 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-21 21:20:06,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 402 flow [2024-06-21 21:20:06,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:20:06,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:20:06,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-21 21:20:06,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-21 21:20:06,321 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 218 flow. Second operand 7 states and 99 transitions. [2024-06-21 21:20:06,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 402 flow [2024-06-21 21:20:06,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 377 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-21 21:20:06,323 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 268 flow [2024-06-21 21:20:06,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-21 21:20:06,324 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-21 21:20:06,324 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 268 flow [2024-06-21 21:20:06,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:20:06,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:06,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:06,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-21 21:20:06,325 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)] === [2024-06-21 21:20:06,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -522695227, now seen corresponding path program 3 times [2024-06-21 21:20:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:06,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334144350] [2024-06-21 21:20:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:06,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:06,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:06,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:06,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334144350] [2024-06-21 21:20:06,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334144350] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:06,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:06,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:20:06,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077684459] [2024-06-21 21:20:06,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:06,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:20:06,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:06,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:20:06,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:20:06,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:06,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:20:06,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:06,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:06,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:07,052 INFO L124 PetriNetUnfolderBase]: 177/338 cut-off events. [2024-06-21 21:20:07,053 INFO L125 PetriNetUnfolderBase]: For 2011/2011 co-relation queries the response was YES. [2024-06-21 21:20:07,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 338 events. 177/338 cut-off events. For 2011/2011 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1384 event pairs, 49 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 1350. Up to 264 conditions per place. [2024-06-21 21:20:07,055 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 33 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-21 21:20:07,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 398 flow [2024-06-21 21:20:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:20:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:20:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-21 21:20:07,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-21 21:20:07,056 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 268 flow. Second operand 7 states and 97 transitions. [2024-06-21 21:20:07,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 398 flow [2024-06-21 21:20:07,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 362 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-21 21:20:07,059 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 273 flow [2024-06-21 21:20:07,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-21 21:20:07,060 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-21 21:20:07,060 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 273 flow [2024-06-21 21:20:07,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-21 21:20:07,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:07,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:07,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-21 21:20:07,060 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)] === [2024-06-21 21:20:07,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:07,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1951572715, now seen corresponding path program 1 times [2024-06-21 21:20:07,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:07,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461464833] [2024-06-21 21:20:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:07,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:07,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461464833] [2024-06-21 21:20:07,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461464833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:07,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:07,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:20:07,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336199809] [2024-06-21 21:20:07,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:07,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:20:07,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:07,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:20:07,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:20:07,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:07,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-21 21:20:07,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:07,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:07,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:08,121 INFO L124 PetriNetUnfolderBase]: 180/360 cut-off events. [2024-06-21 21:20:08,122 INFO L125 PetriNetUnfolderBase]: For 2347/2347 co-relation queries the response was YES. [2024-06-21 21:20:08,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 360 events. 180/360 cut-off events. For 2347/2347 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1547 event pairs, 46 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1461. Up to 276 conditions per place. [2024-06-21 21:20:08,124 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2024-06-21 21:20:08,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 478 flow [2024-06-21 21:20:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:20:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:20:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-21 21:20:08,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-21 21:20:08,125 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 273 flow. Second operand 8 states and 116 transitions. [2024-06-21 21:20:08,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 478 flow [2024-06-21 21:20:08,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 433 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:08,128 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 342 flow [2024-06-21 21:20:08,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-06-21 21:20:08,129 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-21 21:20:08,129 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 342 flow [2024-06-21 21:20:08,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-21 21:20:08,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:08,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:08,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-21 21:20:08,129 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)] === [2024-06-21 21:20:08,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:08,130 INFO L85 PathProgramCache]: Analyzing trace with hash -768830461, now seen corresponding path program 2 times [2024-06-21 21:20:08,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:08,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66955796] [2024-06-21 21:20:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:08,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:08,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:08,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:08,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66955796] [2024-06-21 21:20:08,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66955796] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:08,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:08,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-21 21:20:08,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582596604] [2024-06-21 21:20:08,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:08,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-21 21:20:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:08,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-21 21:20:08,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-21 21:20:08,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:08,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-21 21:20:08,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:08,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:08,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:09,107 INFO L124 PetriNetUnfolderBase]: 178/357 cut-off events. [2024-06-21 21:20:09,107 INFO L125 PetriNetUnfolderBase]: For 2704/2704 co-relation queries the response was YES. [2024-06-21 21:20:09,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1540 conditions, 357 events. 178/357 cut-off events. For 2704/2704 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1530 event pairs, 45 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1510. Up to 268 conditions per place. [2024-06-21 21:20:09,109 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2024-06-21 21:20:09,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 520 flow [2024-06-21 21:20:09,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-21 21:20:09,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-21 21:20:09,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-21 21:20:09,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45982142857142855 [2024-06-21 21:20:09,110 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 342 flow. Second operand 7 states and 103 transitions. [2024-06-21 21:20:09,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 520 flow [2024-06-21 21:20:09,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 488 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-21 21:20:09,114 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 383 flow [2024-06-21 21:20:09,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-21 21:20:09,114 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-21 21:20:09,114 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 383 flow [2024-06-21 21:20:09,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 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) [2024-06-21 21:20:09,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:09,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:09,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-21 21:20:09,115 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)] === [2024-06-21 21:20:09,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:09,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1143245451, now seen corresponding path program 1 times [2024-06-21 21:20:09,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:09,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530180692] [2024-06-21 21:20:09,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:09,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:09,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:09,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:09,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530180692] [2024-06-21 21:20:09,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530180692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:09,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:09,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697056034] [2024-06-21 21:20:09,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:09,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:09,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:09,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:09,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:09,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:09,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:09,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:09,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:09,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:09,937 INFO L124 PetriNetUnfolderBase]: 208/400 cut-off events. [2024-06-21 21:20:09,938 INFO L125 PetriNetUnfolderBase]: For 3340/3340 co-relation queries the response was YES. [2024-06-21 21:20:09,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1760 conditions, 400 events. 208/400 cut-off events. For 3340/3340 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1741 event pairs, 48 based on Foata normal form. 2/399 useless extension candidates. Maximal degree in co-relation 1729. Up to 333 conditions per place. [2024-06-21 21:20:09,940 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 56 selfloop transitions, 17 changer transitions 0/77 dead transitions. [2024-06-21 21:20:09,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 77 transitions, 631 flow [2024-06-21 21:20:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:09,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:09,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 21:20:09,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:20:09,942 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 383 flow. Second operand 9 states and 117 transitions. [2024-06-21 21:20:09,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 77 transitions, 631 flow [2024-06-21 21:20:09,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 574 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-21 21:20:09,946 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 469 flow [2024-06-21 21:20:09,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=469, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-06-21 21:20:09,946 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-21 21:20:09,946 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 469 flow [2024-06-21 21:20:09,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:09,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:09,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:09,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-21 21:20:09,947 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)] === [2024-06-21 21:20:09,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:09,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1946804171, now seen corresponding path program 2 times [2024-06-21 21:20:09,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:09,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682219087] [2024-06-21 21:20:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:09,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:09,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:10,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:10,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682219087] [2024-06-21 21:20:10,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682219087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:10,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:10,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:10,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039600322] [2024-06-21 21:20:10,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:10,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:10,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:10,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:10,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 469 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:10,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:10,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:10,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:10,698 INFO L124 PetriNetUnfolderBase]: 214/415 cut-off events. [2024-06-21 21:20:10,699 INFO L125 PetriNetUnfolderBase]: For 3238/3238 co-relation queries the response was YES. [2024-06-21 21:20:10,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1848 conditions, 415 events. 214/415 cut-off events. For 3238/3238 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1819 event pairs, 48 based on Foata normal form. 2/416 useless extension candidates. Maximal degree in co-relation 1812. Up to 343 conditions per place. [2024-06-21 21:20:10,701 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 61 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2024-06-21 21:20:10,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 685 flow [2024-06-21 21:20:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:10,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 21:20:10,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:20:10,703 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 469 flow. Second operand 9 states and 120 transitions. [2024-06-21 21:20:10,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 685 flow [2024-06-21 21:20:10,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 657 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-21 21:20:10,717 INFO L231 Difference]: Finished difference. Result has 82 places, 68 transitions, 504 flow [2024-06-21 21:20:10,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=504, PETRI_PLACES=82, PETRI_TRANSITIONS=68} [2024-06-21 21:20:10,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-21 21:20:10,719 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 68 transitions, 504 flow [2024-06-21 21:20:10,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:10,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:10,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:10,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-21 21:20:10,719 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)] === [2024-06-21 21:20:10,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:10,720 INFO L85 PathProgramCache]: Analyzing trace with hash -591333017, now seen corresponding path program 3 times [2024-06-21 21:20:10,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:10,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292351787] [2024-06-21 21:20:10,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:10,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:11,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:11,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:11,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292351787] [2024-06-21 21:20:11,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292351787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:11,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:11,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:11,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590319933] [2024-06-21 21:20:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:11,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:11,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:11,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:11,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 68 transitions, 504 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:11,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:11,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:11,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:11,447 INFO L124 PetriNetUnfolderBase]: 225/431 cut-off events. [2024-06-21 21:20:11,448 INFO L125 PetriNetUnfolderBase]: For 4071/4071 co-relation queries the response was YES. [2024-06-21 21:20:11,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2019 conditions, 431 events. 225/431 cut-off events. For 4071/4071 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1912 event pairs, 45 based on Foata normal form. 2/430 useless extension candidates. Maximal degree in co-relation 1981. Up to 289 conditions per place. [2024-06-21 21:20:11,450 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 48 selfloop transitions, 33 changer transitions 0/85 dead transitions. [2024-06-21 21:20:11,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 780 flow [2024-06-21 21:20:11,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:20:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:20:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-21 21:20:11,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-21 21:20:11,451 INFO L175 Difference]: Start difference. First operand has 82 places, 68 transitions, 504 flow. Second operand 8 states and 111 transitions. [2024-06-21 21:20:11,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 780 flow [2024-06-21 21:20:11,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 85 transitions, 709 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 21:20:11,456 INFO L231 Difference]: Finished difference. Result has 82 places, 73 transitions, 574 flow [2024-06-21 21:20:11,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=574, PETRI_PLACES=82, PETRI_TRANSITIONS=73} [2024-06-21 21:20:11,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-21 21:20:11,457 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 73 transitions, 574 flow [2024-06-21 21:20:11,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:11,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:11,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:11,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-21 21:20:11,457 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)] === [2024-06-21 21:20:11,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:11,458 INFO L85 PathProgramCache]: Analyzing trace with hash 976318103, now seen corresponding path program 4 times [2024-06-21 21:20:11,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:11,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674594505] [2024-06-21 21:20:11,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:11,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:11,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:12,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:12,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674594505] [2024-06-21 21:20:12,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674594505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:12,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:12,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:12,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866345288] [2024-06-21 21:20:12,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:12,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:12,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:12,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:12,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:12,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:12,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 73 transitions, 574 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:12,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:12,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:12,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:12,315 INFO L124 PetriNetUnfolderBase]: 231/441 cut-off events. [2024-06-21 21:20:12,319 INFO L125 PetriNetUnfolderBase]: For 4681/4681 co-relation queries the response was YES. [2024-06-21 21:20:12,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2165 conditions, 441 events. 231/441 cut-off events. For 4681/4681 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1956 event pairs, 45 based on Foata normal form. 2/439 useless extension candidates. Maximal degree in co-relation 2128. Up to 295 conditions per place. [2024-06-21 21:20:12,324 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 49 selfloop transitions, 34 changer transitions 0/87 dead transitions. [2024-06-21 21:20:12,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 87 transitions, 834 flow [2024-06-21 21:20:12,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:12,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:12,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-21 21:20:12,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-21 21:20:12,326 INFO L175 Difference]: Start difference. First operand has 82 places, 73 transitions, 574 flow. Second operand 9 states and 122 transitions. [2024-06-21 21:20:12,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 87 transitions, 834 flow [2024-06-21 21:20:12,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 87 transitions, 778 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-21 21:20:12,333 INFO L231 Difference]: Finished difference. Result has 87 places, 75 transitions, 621 flow [2024-06-21 21:20:12,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=621, PETRI_PLACES=87, PETRI_TRANSITIONS=75} [2024-06-21 21:20:12,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-21 21:20:12,333 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 75 transitions, 621 flow [2024-06-21 21:20:12,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:12,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:12,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:12,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-21 21:20:12,334 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)] === [2024-06-21 21:20:12,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash 968043893, now seen corresponding path program 5 times [2024-06-21 21:20:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:12,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759258693] [2024-06-21 21:20:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:12,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:12,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:12,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759258693] [2024-06-21 21:20:12,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759258693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:12,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:12,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:12,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263384132] [2024-06-21 21:20:12,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:12,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:12,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:12,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:12,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:13,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:13,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 75 transitions, 621 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:13,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:13,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:13,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:13,162 INFO L124 PetriNetUnfolderBase]: 227/435 cut-off events. [2024-06-21 21:20:13,162 INFO L125 PetriNetUnfolderBase]: For 4853/4853 co-relation queries the response was YES. [2024-06-21 21:20:13,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2175 conditions, 435 events. 227/435 cut-off events. For 4853/4853 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1915 event pairs, 55 based on Foata normal form. 2/433 useless extension candidates. Maximal degree in co-relation 2136. Up to 292 conditions per place. [2024-06-21 21:20:13,165 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 50 selfloop transitions, 33 changer transitions 0/87 dead transitions. [2024-06-21 21:20:13,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 87 transitions, 830 flow [2024-06-21 21:20:13,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:13,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:13,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-21 21:20:13,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236111111111111 [2024-06-21 21:20:13,166 INFO L175 Difference]: Start difference. First operand has 87 places, 75 transitions, 621 flow. Second operand 9 states and 122 transitions. [2024-06-21 21:20:13,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 87 transitions, 830 flow [2024-06-21 21:20:13,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 751 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:13,172 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 624 flow [2024-06-21 21:20:13,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=543, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2024-06-21 21:20:13,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-06-21 21:20:13,173 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 624 flow [2024-06-21 21:20:13,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:13,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:13,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:13,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-21 21:20:13,174 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)] === [2024-06-21 21:20:13,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:13,174 INFO L85 PathProgramCache]: Analyzing trace with hash 976625685, now seen corresponding path program 1 times [2024-06-21 21:20:13,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:13,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182963151] [2024-06-21 21:20:13,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:13,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:14,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:14,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:14,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182963151] [2024-06-21 21:20:14,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182963151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:14,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:14,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:14,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063815341] [2024-06-21 21:20:14,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:14,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:14,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:14,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:14,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:14,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:14,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 624 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:14,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:14,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:14,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:14,359 INFO L124 PetriNetUnfolderBase]: 225/433 cut-off events. [2024-06-21 21:20:14,359 INFO L125 PetriNetUnfolderBase]: For 4905/4905 co-relation queries the response was YES. [2024-06-21 21:20:14,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2161 conditions, 433 events. 225/433 cut-off events. For 4905/4905 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1918 event pairs, 92 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2121. Up to 380 conditions per place. [2024-06-21 21:20:14,362 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 67 selfloop transitions, 15 changer transitions 0/86 dead transitions. [2024-06-21 21:20:14,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 86 transitions, 818 flow [2024-06-21 21:20:14,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:14,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:14,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-21 21:20:14,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-21 21:20:14,364 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 624 flow. Second operand 9 states and 113 transitions. [2024-06-21 21:20:14,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 86 transitions, 818 flow [2024-06-21 21:20:14,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 86 transitions, 762 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:14,371 INFO L231 Difference]: Finished difference. Result has 93 places, 78 transitions, 619 flow [2024-06-21 21:20:14,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=619, PETRI_PLACES=93, PETRI_TRANSITIONS=78} [2024-06-21 21:20:14,372 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-21 21:20:14,372 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 78 transitions, 619 flow [2024-06-21 21:20:14,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:14,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:14,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:14,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-21 21:20:14,372 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)] === [2024-06-21 21:20:14,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1699106868, now seen corresponding path program 1 times [2024-06-21 21:20:14,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:14,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303258859] [2024-06-21 21:20:14,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:14,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:14,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:14,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:14,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303258859] [2024-06-21 21:20:14,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303258859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:14,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:14,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:14,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304190558] [2024-06-21 21:20:14,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:14,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:14,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:14,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:14,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:15,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:15,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 78 transitions, 619 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:15,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:15,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:15,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:15,153 INFO L124 PetriNetUnfolderBase]: 228/439 cut-off events. [2024-06-21 21:20:15,153 INFO L125 PetriNetUnfolderBase]: For 5231/5231 co-relation queries the response was YES. [2024-06-21 21:20:15,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2194 conditions, 439 events. 228/439 cut-off events. For 5231/5231 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1920 event pairs, 55 based on Foata normal form. 1/439 useless extension candidates. Maximal degree in co-relation 2153. Up to 378 conditions per place. [2024-06-21 21:20:15,158 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 71 selfloop transitions, 17 changer transitions 0/92 dead transitions. [2024-06-21 21:20:15,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 855 flow [2024-06-21 21:20:15,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 21:20:15,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 21:20:15,160 INFO L175 Difference]: Start difference. First operand has 93 places, 78 transitions, 619 flow. Second operand 9 states and 118 transitions. [2024-06-21 21:20:15,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 855 flow [2024-06-21 21:20:15,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 92 transitions, 755 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-21 21:20:15,168 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 590 flow [2024-06-21 21:20:15,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=590, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-21 21:20:15,169 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-21 21:20:15,169 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 590 flow [2024-06-21 21:20:15,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:15,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:15,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:15,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-21 21:20:15,175 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)] === [2024-06-21 21:20:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:15,176 INFO L85 PathProgramCache]: Analyzing trace with hash -289209488, now seen corresponding path program 2 times [2024-06-21 21:20:15,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:15,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391724915] [2024-06-21 21:20:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:15,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391724915] [2024-06-21 21:20:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391724915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:15,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:15,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595965041] [2024-06-21 21:20:15,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:15,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:15,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:15,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:15,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 590 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:15,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:15,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:15,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:16,160 INFO L124 PetriNetUnfolderBase]: 234/449 cut-off events. [2024-06-21 21:20:16,160 INFO L125 PetriNetUnfolderBase]: For 5834/5834 co-relation queries the response was YES. [2024-06-21 21:20:16,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2237 conditions, 449 events. 234/449 cut-off events. For 5834/5834 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1975 event pairs, 53 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 2196. Up to 377 conditions per place. [2024-06-21 21:20:16,162 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-21 21:20:16,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 97 transitions, 854 flow [2024-06-21 21:20:16,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:16,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:16,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 21:20:16,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:20:16,165 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 590 flow. Second operand 9 states and 120 transitions. [2024-06-21 21:20:16,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 97 transitions, 854 flow [2024-06-21 21:20:16,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 799 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:16,171 INFO L231 Difference]: Finished difference. Result has 95 places, 84 transitions, 637 flow [2024-06-21 21:20:16,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=637, PETRI_PLACES=95, PETRI_TRANSITIONS=84} [2024-06-21 21:20:16,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 64 predicate places. [2024-06-21 21:20:16,171 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 84 transitions, 637 flow [2024-06-21 21:20:16,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:16,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:16,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:16,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-21 21:20:16,172 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)] === [2024-06-21 21:20:16,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:16,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1559674926, now seen corresponding path program 1 times [2024-06-21 21:20:16,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:16,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582679091] [2024-06-21 21:20:16,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:16,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:16,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:16,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582679091] [2024-06-21 21:20:16,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582679091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:16,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:16,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:16,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393523277] [2024-06-21 21:20:16,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:16,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:16,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:16,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:16,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:16,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 84 transitions, 637 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:16,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:16,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:16,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:16,983 INFO L124 PetriNetUnfolderBase]: 240/461 cut-off events. [2024-06-21 21:20:16,984 INFO L125 PetriNetUnfolderBase]: For 6698/6698 co-relation queries the response was YES. [2024-06-21 21:20:16,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 461 events. 240/461 cut-off events. For 6698/6698 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2055 event pairs, 50 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 2301. Up to 379 conditions per place. [2024-06-21 21:20:16,986 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 79 selfloop transitions, 19 changer transitions 0/102 dead transitions. [2024-06-21 21:20:16,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 102 transitions, 907 flow [2024-06-21 21:20:16,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:16,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 21:20:16,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:20:16,988 INFO L175 Difference]: Start difference. First operand has 95 places, 84 transitions, 637 flow. Second operand 10 states and 132 transitions. [2024-06-21 21:20:16,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 102 transitions, 907 flow [2024-06-21 21:20:16,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 833 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:16,996 INFO L231 Difference]: Finished difference. Result has 99 places, 86 transitions, 638 flow [2024-06-21 21:20:16,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=638, PETRI_PLACES=99, PETRI_TRANSITIONS=86} [2024-06-21 21:20:16,996 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-21 21:20:16,996 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 86 transitions, 638 flow [2024-06-21 21:20:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:16,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:16,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:16,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-21 21:20:16,997 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)] === [2024-06-21 21:20:16,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:16,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1228694552, now seen corresponding path program 3 times [2024-06-21 21:20:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:16,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843835192] [2024-06-21 21:20:16,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:16,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:17,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:17,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843835192] [2024-06-21 21:20:17,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843835192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:17,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:17,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:17,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228705995] [2024-06-21 21:20:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:17,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:17,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:17,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:17,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:17,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 86 transitions, 638 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:17,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:17,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:17,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:18,078 INFO L124 PetriNetUnfolderBase]: 238/456 cut-off events. [2024-06-21 21:20:18,078 INFO L125 PetriNetUnfolderBase]: For 6693/6693 co-relation queries the response was YES. [2024-06-21 21:20:18,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2330 conditions, 456 events. 238/456 cut-off events. For 6693/6693 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2063 event pairs, 58 based on Foata normal form. 1/452 useless extension candidates. Maximal degree in co-relation 2286. Up to 384 conditions per place. [2024-06-21 21:20:18,083 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 73 selfloop transitions, 21 changer transitions 0/98 dead transitions. [2024-06-21 21:20:18,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 896 flow [2024-06-21 21:20:18,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-21 21:20:18,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:20:18,085 INFO L175 Difference]: Start difference. First operand has 99 places, 86 transitions, 638 flow. Second operand 9 states and 117 transitions. [2024-06-21 21:20:18,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 896 flow [2024-06-21 21:20:18,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 837 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:18,092 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 676 flow [2024-06-21 21:20:18,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=676, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-21 21:20:18,093 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-21 21:20:18,093 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 676 flow [2024-06-21 21:20:18,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 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) [2024-06-21 21:20:18,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:18,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:18,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-21 21:20:18,093 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)] === [2024-06-21 21:20:18,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:18,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1080869626, now seen corresponding path program 2 times [2024-06-21 21:20:18,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:18,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616361366] [2024-06-21 21:20:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:18,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:18,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:18,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:18,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616361366] [2024-06-21 21:20:18,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616361366] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:18,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:18,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:18,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569826725] [2024-06-21 21:20:18,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:18,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:18,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:18,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:18,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:18,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:18,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 676 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:18,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:18,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:18,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:18,940 INFO L124 PetriNetUnfolderBase]: 244/468 cut-off events. [2024-06-21 21:20:18,940 INFO L125 PetriNetUnfolderBase]: For 7637/7637 co-relation queries the response was YES. [2024-06-21 21:20:18,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 468 events. 244/468 cut-off events. For 7637/7637 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2105 event pairs, 46 based on Foata normal form. 2/469 useless extension candidates. Maximal degree in co-relation 2368. Up to 356 conditions per place. [2024-06-21 21:20:18,943 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 26 changer transitions 0/105 dead transitions. [2024-06-21 21:20:18,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 105 transitions, 952 flow [2024-06-21 21:20:18,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:18,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:18,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 21:20:18,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:20:18,945 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 676 flow. Second operand 9 states and 120 transitions. [2024-06-21 21:20:18,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 105 transitions, 952 flow [2024-06-21 21:20:18,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 105 transitions, 867 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:18,953 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 689 flow [2024-06-21 21:20:18,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2024-06-21 21:20:18,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-21 21:20:18,954 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 689 flow [2024-06-21 21:20:18,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:18,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:18,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:18,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-21 21:20:18,954 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)] === [2024-06-21 21:20:18,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:18,955 INFO L85 PathProgramCache]: Analyzing trace with hash 210614308, now seen corresponding path program 3 times [2024-06-21 21:20:18,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:18,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673778858] [2024-06-21 21:20:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:18,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:19,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:19,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673778858] [2024-06-21 21:20:19,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673778858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:19,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:19,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229061960] [2024-06-21 21:20:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:19,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:19,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:19,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:19,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:19,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:19,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 689 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:19,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:19,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:19,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:19,968 INFO L124 PetriNetUnfolderBase]: 250/481 cut-off events. [2024-06-21 21:20:19,968 INFO L125 PetriNetUnfolderBase]: For 8382/8382 co-relation queries the response was YES. [2024-06-21 21:20:19,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2520 conditions, 481 events. 250/481 cut-off events. For 8382/8382 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2185 event pairs, 96 based on Foata normal form. 2/482 useless extension candidates. Maximal degree in co-relation 2475. Up to 419 conditions per place. [2024-06-21 21:20:19,971 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 16 changer transitions 0/102 dead transitions. [2024-06-21 21:20:19,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 102 transitions, 945 flow [2024-06-21 21:20:19,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:19,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:19,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 21:20:19,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 21:20:19,973 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 689 flow. Second operand 10 states and 123 transitions. [2024-06-21 21:20:19,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 102 transitions, 945 flow [2024-06-21 21:20:19,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 102 transitions, 863 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:19,981 INFO L231 Difference]: Finished difference. Result has 105 places, 93 transitions, 686 flow [2024-06-21 21:20:19,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=105, PETRI_TRANSITIONS=93} [2024-06-21 21:20:19,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-21 21:20:19,982 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 93 transitions, 686 flow [2024-06-21 21:20:19,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:19,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:19,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:19,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-21 21:20:19,983 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)] === [2024-06-21 21:20:19,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:19,983 INFO L85 PathProgramCache]: Analyzing trace with hash 210287878, now seen corresponding path program 4 times [2024-06-21 21:20:19,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:19,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360284341] [2024-06-21 21:20:19,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:20,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:20,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360284341] [2024-06-21 21:20:20,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360284341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:20,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:20,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:20,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332428758] [2024-06-21 21:20:20,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:20,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:20,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:20,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:20,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:20,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:20,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 93 transitions, 686 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:20,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:20,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:20,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:20,864 INFO L124 PetriNetUnfolderBase]: 261/496 cut-off events. [2024-06-21 21:20:20,864 INFO L125 PetriNetUnfolderBase]: For 9108/9108 co-relation queries the response was YES. [2024-06-21 21:20:20,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2613 conditions, 496 events. 261/496 cut-off events. For 9108/9108 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2277 event pairs, 43 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2567. Up to 301 conditions per place. [2024-06-21 21:20:20,867 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 62 selfloop transitions, 45 changer transitions 0/111 dead transitions. [2024-06-21 21:20:20,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 111 transitions, 1062 flow [2024-06-21 21:20:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:20,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 21:20:20,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 21:20:20,868 INFO L175 Difference]: Start difference. First operand has 105 places, 93 transitions, 686 flow. Second operand 10 states and 135 transitions. [2024-06-21 21:20:20,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 111 transitions, 1062 flow [2024-06-21 21:20:20,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 111 transitions, 989 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 21:20:20,877 INFO L231 Difference]: Finished difference. Result has 106 places, 97 transitions, 788 flow [2024-06-21 21:20:20,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=788, PETRI_PLACES=106, PETRI_TRANSITIONS=97} [2024-06-21 21:20:20,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-21 21:20:20,878 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 97 transitions, 788 flow [2024-06-21 21:20:20,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:20,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:20,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-21 21:20:20,879 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)] === [2024-06-21 21:20:20,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:20,879 INFO L85 PathProgramCache]: Analyzing trace with hash -55409402, now seen corresponding path program 5 times [2024-06-21 21:20:20,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:20,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769789233] [2024-06-21 21:20:20,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:21,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:21,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769789233] [2024-06-21 21:20:21,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769789233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:21,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:21,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:21,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262177904] [2024-06-21 21:20:21,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:21,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:21,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:21,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:21,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:21,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 97 transitions, 788 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:21,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:21,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:21,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:21,765 INFO L124 PetriNetUnfolderBase]: 267/508 cut-off events. [2024-06-21 21:20:21,765 INFO L125 PetriNetUnfolderBase]: For 10032/10032 co-relation queries the response was YES. [2024-06-21 21:20:21,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2778 conditions, 508 events. 267/508 cut-off events. For 10032/10032 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2362 event pairs, 62 based on Foata normal form. 2/507 useless extension candidates. Maximal degree in co-relation 2732. Up to 307 conditions per place. [2024-06-21 21:20:21,771 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 67 selfloop transitions, 42 changer transitions 0/113 dead transitions. [2024-06-21 21:20:21,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 1136 flow [2024-06-21 21:20:21,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:21,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:21,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 21:20:21,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 21:20:21,774 INFO L175 Difference]: Start difference. First operand has 106 places, 97 transitions, 788 flow. Second operand 10 states and 137 transitions. [2024-06-21 21:20:21,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 1136 flow [2024-06-21 21:20:21,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 113 transitions, 1056 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:21,785 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 839 flow [2024-06-21 21:20:21,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=839, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2024-06-21 21:20:21,785 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-21 21:20:21,786 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 839 flow [2024-06-21 21:20:21,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:21,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:21,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:21,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-21 21:20:21,786 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)] === [2024-06-21 21:20:21,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash 201091108, now seen corresponding path program 6 times [2024-06-21 21:20:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:21,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015695509] [2024-06-21 21:20:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:21,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:22,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:22,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:22,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015695509] [2024-06-21 21:20:22,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015695509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:22,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:22,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:22,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309556023] [2024-06-21 21:20:22,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:22,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:22,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:22,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:22,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:22,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:22,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 839 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:22,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:22,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:22,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:22,682 INFO L124 PetriNetUnfolderBase]: 263/500 cut-off events. [2024-06-21 21:20:22,683 INFO L125 PetriNetUnfolderBase]: For 9874/9874 co-relation queries the response was YES. [2024-06-21 21:20:22,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 500 events. 263/500 cut-off events. For 9874/9874 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2301 event pairs, 45 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2704. Up to 304 conditions per place. [2024-06-21 21:20:22,686 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 64 selfloop transitions, 44 changer transitions 0/112 dead transitions. [2024-06-21 21:20:22,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 112 transitions, 1093 flow [2024-06-21 21:20:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 21:20:22,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 21:20:22,687 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 839 flow. Second operand 10 states and 135 transitions. [2024-06-21 21:20:22,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 112 transitions, 1093 flow [2024-06-21 21:20:22,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 112 transitions, 965 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:22,699 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 804 flow [2024-06-21 21:20:22,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=804, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2024-06-21 21:20:22,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-21 21:20:22,700 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 804 flow [2024-06-21 21:20:22,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:22,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:22,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:22,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-21 21:20:22,700 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)] === [2024-06-21 21:20:22,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:22,701 INFO L85 PathProgramCache]: Analyzing trace with hash 210626212, now seen corresponding path program 1 times [2024-06-21 21:20:22,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:22,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988705777] [2024-06-21 21:20:22,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:22,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:22,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:23,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988705777] [2024-06-21 21:20:23,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988705777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:23,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:23,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:23,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766953082] [2024-06-21 21:20:23,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:23,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:23,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:23,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:23,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:23,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:23,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 804 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:23,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:23,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:23,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:23,825 INFO L124 PetriNetUnfolderBase]: 260/498 cut-off events. [2024-06-21 21:20:23,825 INFO L125 PetriNetUnfolderBase]: For 9492/9492 co-relation queries the response was YES. [2024-06-21 21:20:23,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2660 conditions, 498 events. 260/498 cut-off events. For 9492/9492 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2296 event pairs, 101 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2611. Up to 433 conditions per place. [2024-06-21 21:20:23,832 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 89 selfloop transitions, 16 changer transitions 0/109 dead transitions. [2024-06-21 21:20:23,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 109 transitions, 1036 flow [2024-06-21 21:20:23,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:23,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:23,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-21 21:20:23,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-21 21:20:23,834 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 804 flow. Second operand 10 states and 123 transitions. [2024-06-21 21:20:23,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 109 transitions, 1036 flow [2024-06-21 21:20:23,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 109 transitions, 914 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 21:20:23,845 INFO L231 Difference]: Finished difference. Result has 113 places, 99 transitions, 718 flow [2024-06-21 21:20:23,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=718, PETRI_PLACES=113, PETRI_TRANSITIONS=99} [2024-06-21 21:20:23,847 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-21 21:20:23,847 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 99 transitions, 718 flow [2024-06-21 21:20:23,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:23,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:23,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:23,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-21 21:20:23,848 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:23,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:23,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1773658632, now seen corresponding path program 1 times [2024-06-21 21:20:23,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:23,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930225005] [2024-06-21 21:20:23,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:23,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:24,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:24,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930225005] [2024-06-21 21:20:24,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930225005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:24,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:24,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:24,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078808359] [2024-06-21 21:20:24,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:24,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:24,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:24,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:24,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:24,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:24,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 99 transitions, 718 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:24,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:24,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:24,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:24,898 INFO L124 PetriNetUnfolderBase]: 241/478 cut-off events. [2024-06-21 21:20:24,898 INFO L125 PetriNetUnfolderBase]: For 10295/10296 co-relation queries the response was YES. [2024-06-21 21:20:24,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2513 conditions, 478 events. 241/478 cut-off events. For 10295/10296 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2257 event pairs, 48 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 2463. Up to 373 conditions per place. [2024-06-21 21:20:24,901 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 80 selfloop transitions, 20 changer transitions 0/113 dead transitions. [2024-06-21 21:20:24,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 962 flow [2024-06-21 21:20:24,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 21:20:24,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 21:20:24,902 INFO L175 Difference]: Start difference. First operand has 113 places, 99 transitions, 718 flow. Second operand 9 states and 128 transitions. [2024-06-21 21:20:24,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 962 flow [2024-06-21 21:20:24,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 113 transitions, 922 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:24,913 INFO L231 Difference]: Finished difference. Result has 114 places, 100 transitions, 734 flow [2024-06-21 21:20:24,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=734, PETRI_PLACES=114, PETRI_TRANSITIONS=100} [2024-06-21 21:20:24,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-21 21:20:24,913 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 100 transitions, 734 flow [2024-06-21 21:20:24,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:24,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:24,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:24,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-21 21:20:24,914 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:24,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:24,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1828358976, now seen corresponding path program 2 times [2024-06-21 21:20:24,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:24,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670793355] [2024-06-21 21:20:24,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:24,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:24,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:25,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:25,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670793355] [2024-06-21 21:20:25,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670793355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:25,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:25,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:25,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727563146] [2024-06-21 21:20:25,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:25,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:25,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:25,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:25,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 100 transitions, 734 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:25,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:25,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:25,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:25,841 INFO L124 PetriNetUnfolderBase]: 251/500 cut-off events. [2024-06-21 21:20:25,842 INFO L125 PetriNetUnfolderBase]: For 10835/10836 co-relation queries the response was YES. [2024-06-21 21:20:25,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 500 events. 251/500 cut-off events. For 10835/10836 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2390 event pairs, 55 based on Foata normal form. 3/502 useless extension candidates. Maximal degree in co-relation 2569. Up to 395 conditions per place. [2024-06-21 21:20:25,845 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 89 selfloop transitions, 15 changer transitions 0/117 dead transitions. [2024-06-21 21:20:25,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 117 transitions, 998 flow [2024-06-21 21:20:25,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:25,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-21 21:20:25,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-21 21:20:25,846 INFO L175 Difference]: Start difference. First operand has 114 places, 100 transitions, 734 flow. Second operand 9 states and 127 transitions. [2024-06-21 21:20:25,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 117 transitions, 998 flow [2024-06-21 21:20:25,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 117 transitions, 952 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:25,857 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 744 flow [2024-06-21 21:20:25,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=744, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2024-06-21 21:20:25,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 86 predicate places. [2024-06-21 21:20:25,858 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 744 flow [2024-06-21 21:20:25,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:25,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:25,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:25,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-21 21:20:25,858 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:25,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:25,859 INFO L85 PathProgramCache]: Analyzing trace with hash -755037452, now seen corresponding path program 1 times [2024-06-21 21:20:25,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:25,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2634493] [2024-06-21 21:20:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:25,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:26,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:26,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:26,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2634493] [2024-06-21 21:20:26,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2634493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:26,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:26,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:26,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099639777] [2024-06-21 21:20:26,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:26,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:26,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:26,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:26,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:26,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:26,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:26,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:26,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:26,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:26,908 INFO L124 PetriNetUnfolderBase]: 276/529 cut-off events. [2024-06-21 21:20:26,909 INFO L125 PetriNetUnfolderBase]: For 10898/10898 co-relation queries the response was YES. [2024-06-21 21:20:26,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2776 conditions, 529 events. 276/529 cut-off events. For 10898/10898 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2488 event pairs, 60 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 2723. Up to 450 conditions per place. [2024-06-21 21:20:26,912 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 90 selfloop transitions, 23 changer transitions 0/117 dead transitions. [2024-06-21 21:20:26,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 117 transitions, 1044 flow [2024-06-21 21:20:26,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:26,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 21:20:26,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 21:20:26,918 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 744 flow. Second operand 10 states and 131 transitions. [2024-06-21 21:20:26,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 117 transitions, 1044 flow [2024-06-21 21:20:26,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 117 transitions, 1008 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:26,935 INFO L231 Difference]: Finished difference. Result has 121 places, 104 transitions, 803 flow [2024-06-21 21:20:26,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=803, PETRI_PLACES=121, PETRI_TRANSITIONS=104} [2024-06-21 21:20:26,936 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-21 21:20:26,936 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 104 transitions, 803 flow [2024-06-21 21:20:26,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:26,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:26,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:26,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-21 21:20:26,937 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:26,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:26,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1111961560, now seen corresponding path program 3 times [2024-06-21 21:20:26,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:26,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879615565] [2024-06-21 21:20:26,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:27,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:27,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:27,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879615565] [2024-06-21 21:20:27,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879615565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:27,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:27,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:27,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868159456] [2024-06-21 21:20:27,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:27,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:27,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:27,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:27,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:27,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 104 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:27,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:27,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:27,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:27,950 INFO L124 PetriNetUnfolderBase]: 257/514 cut-off events. [2024-06-21 21:20:27,951 INFO L125 PetriNetUnfolderBase]: For 12897/12899 co-relation queries the response was YES. [2024-06-21 21:20:27,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2770 conditions, 514 events. 257/514 cut-off events. For 12897/12899 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2465 event pairs, 56 based on Foata normal form. 4/517 useless extension candidates. Maximal degree in co-relation 2716. Up to 418 conditions per place. [2024-06-21 21:20:27,954 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 90 selfloop transitions, 16 changer transitions 0/119 dead transitions. [2024-06-21 21:20:27,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 119 transitions, 1069 flow [2024-06-21 21:20:27,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:27,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:27,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 125 transitions. [2024-06-21 21:20:27,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4340277777777778 [2024-06-21 21:20:27,955 INFO L175 Difference]: Start difference. First operand has 121 places, 104 transitions, 803 flow. Second operand 9 states and 125 transitions. [2024-06-21 21:20:27,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 119 transitions, 1069 flow [2024-06-21 21:20:27,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 990 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:27,970 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 791 flow [2024-06-21 21:20:27,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=724, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=791, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2024-06-21 21:20:27,970 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-21 21:20:27,970 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 791 flow [2024-06-21 21:20:27,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:27,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:27,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:27,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-21 21:20:27,971 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:27,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:27,971 INFO L85 PathProgramCache]: Analyzing trace with hash 2086483318, now seen corresponding path program 4 times [2024-06-21 21:20:27,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:27,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781599910] [2024-06-21 21:20:27,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:27,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:28,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:28,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781599910] [2024-06-21 21:20:28,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781599910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:28,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:28,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:28,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479594157] [2024-06-21 21:20:28,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:28,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:28,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:28,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:28,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:28,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:28,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 791 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:28,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:28,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:28,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:28,801 INFO L124 PetriNetUnfolderBase]: 266/537 cut-off events. [2024-06-21 21:20:28,801 INFO L125 PetriNetUnfolderBase]: For 13941/13944 co-relation queries the response was YES. [2024-06-21 21:20:28,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2872 conditions, 537 events. 266/537 cut-off events. For 13941/13944 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2639 event pairs, 54 based on Foata normal form. 5/541 useless extension candidates. Maximal degree in co-relation 2816. Up to 415 conditions per place. [2024-06-21 21:20:28,806 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 92 selfloop transitions, 20 changer transitions 0/125 dead transitions. [2024-06-21 21:20:28,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 125 transitions, 1079 flow [2024-06-21 21:20:28,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:28,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-21 21:20:28,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-21 21:20:28,807 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 791 flow. Second operand 9 states and 129 transitions. [2024-06-21 21:20:28,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 125 transitions, 1079 flow [2024-06-21 21:20:28,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 125 transitions, 1037 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:28,824 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 821 flow [2024-06-21 21:20:28,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=821, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2024-06-21 21:20:28,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-21 21:20:28,825 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 821 flow [2024-06-21 21:20:28,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:28,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:28,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:28,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-21 21:20:28,826 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:28,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:28,826 INFO L85 PathProgramCache]: Analyzing trace with hash -504204962, now seen corresponding path program 5 times [2024-06-21 21:20:28,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:28,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546771810] [2024-06-21 21:20:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:28,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:29,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546771810] [2024-06-21 21:20:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546771810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:29,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:29,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003654139] [2024-06-21 21:20:29,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:29,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:29,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:29,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:29,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 109 transitions, 821 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:29,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:29,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:29,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:29,877 INFO L124 PetriNetUnfolderBase]: 271/546 cut-off events. [2024-06-21 21:20:29,877 INFO L125 PetriNetUnfolderBase]: For 16359/16363 co-relation queries the response was YES. [2024-06-21 21:20:29,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 546 events. 271/546 cut-off events. For 16359/16363 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2714 event pairs, 59 based on Foata normal form. 5/548 useless extension candidates. Maximal degree in co-relation 2949. Up to 434 conditions per place. [2024-06-21 21:20:29,881 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 90 selfloop transitions, 21 changer transitions 0/124 dead transitions. [2024-06-21 21:20:29,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 124 transitions, 1097 flow [2024-06-21 21:20:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-21 21:20:29,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-21 21:20:29,882 INFO L175 Difference]: Start difference. First operand has 127 places, 109 transitions, 821 flow. Second operand 9 states and 128 transitions. [2024-06-21 21:20:29,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 124 transitions, 1097 flow [2024-06-21 21:20:29,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 1045 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:29,897 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 835 flow [2024-06-21 21:20:29,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=835, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2024-06-21 21:20:29,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-21 21:20:29,898 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 835 flow [2024-06-21 21:20:29,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:29,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:29,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:29,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-21 21:20:29,898 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:29,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:29,899 INFO L85 PathProgramCache]: Analyzing trace with hash -243297034, now seen corresponding path program 2 times [2024-06-21 21:20:29,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:29,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236492953] [2024-06-21 21:20:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:30,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:30,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:30,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236492953] [2024-06-21 21:20:30,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236492953] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:30,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:30,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:30,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403587826] [2024-06-21 21:20:30,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:30,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:30,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:30,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:30,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 835 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:30,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:30,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:30,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:31,066 INFO L124 PetriNetUnfolderBase]: 291/567 cut-off events. [2024-06-21 21:20:31,066 INFO L125 PetriNetUnfolderBase]: For 13478/13478 co-relation queries the response was YES. [2024-06-21 21:20:31,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 567 events. 291/567 cut-off events. For 13478/13478 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2776 event pairs, 71 based on Foata normal form. 1/567 useless extension candidates. Maximal degree in co-relation 2955. Up to 465 conditions per place. [2024-06-21 21:20:31,070 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 33 changer transitions 0/124 dead transitions. [2024-06-21 21:20:31,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 124 transitions, 1149 flow [2024-06-21 21:20:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 21:20:31,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 21:20:31,085 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 835 flow. Second operand 9 states and 119 transitions. [2024-06-21 21:20:31,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 124 transitions, 1149 flow [2024-06-21 21:20:31,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 124 transitions, 1093 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:31,102 INFO L231 Difference]: Finished difference. Result has 132 places, 112 transitions, 902 flow [2024-06-21 21:20:31,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=132, PETRI_TRANSITIONS=112} [2024-06-21 21:20:31,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-21 21:20:31,103 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 112 transitions, 902 flow [2024-06-21 21:20:31,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:31,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:31,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:31,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-21 21:20:31,104 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:31,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1764622286, now seen corresponding path program 6 times [2024-06-21 21:20:31,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:31,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457706140] [2024-06-21 21:20:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:31,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:31,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457706140] [2024-06-21 21:20:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457706140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:31,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000076015] [2024-06-21 21:20:31,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:31,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:31,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:31,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:31,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:31,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:31,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 112 transitions, 902 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:31,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:31,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:31,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:32,061 INFO L124 PetriNetUnfolderBase]: 280/564 cut-off events. [2024-06-21 21:20:32,062 INFO L125 PetriNetUnfolderBase]: For 16004/16007 co-relation queries the response was YES. [2024-06-21 21:20:32,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3039 conditions, 564 events. 280/564 cut-off events. For 16004/16007 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2840 event pairs, 31 based on Foata normal form. 5/568 useless extension candidates. Maximal degree in co-relation 2979. Up to 407 conditions per place. [2024-06-21 21:20:32,065 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 94 selfloop transitions, 23 changer transitions 0/130 dead transitions. [2024-06-21 21:20:32,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1204 flow [2024-06-21 21:20:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:32,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-21 21:20:32,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2024-06-21 21:20:32,067 INFO L175 Difference]: Start difference. First operand has 132 places, 112 transitions, 902 flow. Second operand 9 states and 127 transitions. [2024-06-21 21:20:32,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1204 flow [2024-06-21 21:20:32,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 1103 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:32,086 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 881 flow [2024-06-21 21:20:32,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=881, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-06-21 21:20:32,087 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-21 21:20:32,087 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 881 flow [2024-06-21 21:20:32,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:32,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:32,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:32,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-21 21:20:32,087 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:32,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1105281432, now seen corresponding path program 1 times [2024-06-21 21:20:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:32,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716699555] [2024-06-21 21:20:32,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:32,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:32,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:32,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:32,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716699555] [2024-06-21 21:20:32,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716699555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:32,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:32,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:32,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457616338] [2024-06-21 21:20:32,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:32,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:32,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:32,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:32,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:32,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:32,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 881 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:32,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:32,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:32,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:33,162 INFO L124 PetriNetUnfolderBase]: 303/593 cut-off events. [2024-06-21 21:20:33,163 INFO L125 PetriNetUnfolderBase]: For 14137/14137 co-relation queries the response was YES. [2024-06-21 21:20:33,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3116 conditions, 593 events. 303/593 cut-off events. For 14137/14137 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2984 event pairs, 73 based on Foata normal form. 1/593 useless extension candidates. Maximal degree in co-relation 3055. Up to 516 conditions per place. [2024-06-21 21:20:33,166 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 21 changer transitions 0/135 dead transitions. [2024-06-21 21:20:33,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 135 transitions, 1226 flow [2024-06-21 21:20:33,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:20:33,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:20:33,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-21 21:20:33,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-21 21:20:33,167 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 881 flow. Second operand 11 states and 139 transitions. [2024-06-21 21:20:33,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 135 transitions, 1226 flow [2024-06-21 21:20:33,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 135 transitions, 1146 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:33,189 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 918 flow [2024-06-21 21:20:33,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=918, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-21 21:20:33,190 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 109 predicate places. [2024-06-21 21:20:33,190 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 918 flow [2024-06-21 21:20:33,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:33,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:33,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:33,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-21 21:20:33,190 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:33,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash 565170548, now seen corresponding path program 7 times [2024-06-21 21:20:33,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:33,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423971217] [2024-06-21 21:20:33,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:33,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:33,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:33,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:33,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423971217] [2024-06-21 21:20:33,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423971217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:33,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:33,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:33,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505644730] [2024-06-21 21:20:33,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:33,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:33,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:33,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:33,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:33,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 918 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:33,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:33,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:33,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:34,156 INFO L124 PetriNetUnfolderBase]: 287/575 cut-off events. [2024-06-21 21:20:34,157 INFO L125 PetriNetUnfolderBase]: For 16310/16312 co-relation queries the response was YES. [2024-06-21 21:20:34,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 575 events. 287/575 cut-off events. For 16310/16312 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2925 event pairs, 57 based on Foata normal form. 4/573 useless extension candidates. Maximal degree in co-relation 3013. Up to 447 conditions per place. [2024-06-21 21:20:34,160 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 95 selfloop transitions, 26 changer transitions 0/135 dead transitions. [2024-06-21 21:20:34,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 135 transitions, 1212 flow [2024-06-21 21:20:34,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:20:34,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:20:34,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-21 21:20:34,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44921875 [2024-06-21 21:20:34,172 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 918 flow. Second operand 8 states and 115 transitions. [2024-06-21 21:20:34,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 135 transitions, 1212 flow [2024-06-21 21:20:34,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 135 transitions, 1162 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:34,194 INFO L231 Difference]: Finished difference. Result has 141 places, 123 transitions, 952 flow [2024-06-21 21:20:34,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=952, PETRI_PLACES=141, PETRI_TRANSITIONS=123} [2024-06-21 21:20:34,195 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-21 21:20:34,195 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 123 transitions, 952 flow [2024-06-21 21:20:34,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:34,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:34,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:34,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-21 21:20:34,196 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:34,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:34,196 INFO L85 PathProgramCache]: Analyzing trace with hash 675280312, now seen corresponding path program 8 times [2024-06-21 21:20:34,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:34,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729854618] [2024-06-21 21:20:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:34,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:34,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:34,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729854618] [2024-06-21 21:20:34,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729854618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:34,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:34,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:34,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133624174] [2024-06-21 21:20:34,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:34,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:34,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:34,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:34,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:34,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:34,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 123 transitions, 952 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:34,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:34,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:34,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:35,247 INFO L124 PetriNetUnfolderBase]: 293/585 cut-off events. [2024-06-21 21:20:35,247 INFO L125 PetriNetUnfolderBase]: For 17342/17344 co-relation queries the response was YES. [2024-06-21 21:20:35,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3144 conditions, 585 events. 293/585 cut-off events. For 17342/17344 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2943 event pairs, 32 based on Foata normal form. 4/588 useless extension candidates. Maximal degree in co-relation 3081. Up to 406 conditions per place. [2024-06-21 21:20:35,251 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 98 selfloop transitions, 25 changer transitions 0/137 dead transitions. [2024-06-21 21:20:35,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 137 transitions, 1254 flow [2024-06-21 21:20:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:20:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:20:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-21 21:20:35,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-21 21:20:35,253 INFO L175 Difference]: Start difference. First operand has 141 places, 123 transitions, 952 flow. Second operand 8 states and 114 transitions. [2024-06-21 21:20:35,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 137 transitions, 1254 flow [2024-06-21 21:20:35,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 137 transitions, 1180 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:35,280 INFO L231 Difference]: Finished difference. Result has 143 places, 124 transitions, 964 flow [2024-06-21 21:20:35,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=964, PETRI_PLACES=143, PETRI_TRANSITIONS=124} [2024-06-21 21:20:35,280 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-21 21:20:35,281 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 124 transitions, 964 flow [2024-06-21 21:20:35,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:35,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:35,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:35,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-21 21:20:35,281 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:35,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:35,282 INFO L85 PathProgramCache]: Analyzing trace with hash 846100852, now seen corresponding path program 9 times [2024-06-21 21:20:35,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:35,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973959673] [2024-06-21 21:20:35,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:35,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:35,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:36,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:36,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973959673] [2024-06-21 21:20:36,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973959673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:36,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:36,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:36,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532900994] [2024-06-21 21:20:36,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:36,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:36,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:36,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:36,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:36,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:36,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 124 transitions, 964 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:36,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:36,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:36,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:36,311 INFO L124 PetriNetUnfolderBase]: 294/590 cut-off events. [2024-06-21 21:20:36,311 INFO L125 PetriNetUnfolderBase]: For 16410/16412 co-relation queries the response was YES. [2024-06-21 21:20:36,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3158 conditions, 590 events. 294/590 cut-off events. For 16410/16412 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3010 event pairs, 64 based on Foata normal form. 4/593 useless extension candidates. Maximal degree in co-relation 3094. Up to 480 conditions per place. [2024-06-21 21:20:36,315 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 103 selfloop transitions, 20 changer transitions 0/137 dead transitions. [2024-06-21 21:20:36,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 137 transitions, 1266 flow [2024-06-21 21:20:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:20:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:20:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 21:20:36,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:20:36,316 INFO L175 Difference]: Start difference. First operand has 143 places, 124 transitions, 964 flow. Second operand 8 states and 112 transitions. [2024-06-21 21:20:36,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 137 transitions, 1266 flow [2024-06-21 21:20:36,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 137 transitions, 1194 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:36,342 INFO L231 Difference]: Finished difference. Result has 146 places, 127 transitions, 980 flow [2024-06-21 21:20:36,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=980, PETRI_PLACES=146, PETRI_TRANSITIONS=127} [2024-06-21 21:20:36,342 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-06-21 21:20:36,342 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 127 transitions, 980 flow [2024-06-21 21:20:36,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:36,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:36,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:36,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-21 21:20:36,343 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:36,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1571683388, now seen corresponding path program 10 times [2024-06-21 21:20:36,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:36,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091132861] [2024-06-21 21:20:36,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091132861] [2024-06-21 21:20:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091132861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:36,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:36,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-21 21:20:36,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947874705] [2024-06-21 21:20:36,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:36,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-21 21:20:36,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:36,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-21 21:20:36,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-21 21:20:37,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-21 21:20:37,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 127 transitions, 980 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:37,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:37,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-21 21:20:37,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:37,269 INFO L124 PetriNetUnfolderBase]: 291/585 cut-off events. [2024-06-21 21:20:37,269 INFO L125 PetriNetUnfolderBase]: For 13304/13306 co-relation queries the response was YES. [2024-06-21 21:20:37,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3014 conditions, 585 events. 291/585 cut-off events. For 13304/13306 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2987 event pairs, 62 based on Foata normal form. 4/585 useless extension candidates. Maximal degree in co-relation 2948. Up to 472 conditions per place. [2024-06-21 21:20:37,273 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 102 selfloop transitions, 21 changer transitions 0/137 dead transitions. [2024-06-21 21:20:37,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 137 transitions, 1256 flow [2024-06-21 21:20:37,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-21 21:20:37,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-21 21:20:37,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-21 21:20:37,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-21 21:20:37,274 INFO L175 Difference]: Start difference. First operand has 146 places, 127 transitions, 980 flow. Second operand 8 states and 112 transitions. [2024-06-21 21:20:37,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 137 transitions, 1256 flow [2024-06-21 21:20:37,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 137 transitions, 1216 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-21 21:20:37,296 INFO L231 Difference]: Finished difference. Result has 151 places, 129 transitions, 1003 flow [2024-06-21 21:20:37,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1003, PETRI_PLACES=151, PETRI_TRANSITIONS=129} [2024-06-21 21:20:37,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-21 21:20:37,296 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 129 transitions, 1003 flow [2024-06-21 21:20:37,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 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) [2024-06-21 21:20:37,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:37,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:37,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-21 21:20:37,297 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:37,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash 413757366, now seen corresponding path program 2 times [2024-06-21 21:20:37,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:37,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080259323] [2024-06-21 21:20:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:38,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:38,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080259323] [2024-06-21 21:20:38,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080259323] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:38,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:38,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:38,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763118426] [2024-06-21 21:20:38,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:38,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:38,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:38,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:38,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:38,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:38,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 129 transitions, 1003 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:38,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:38,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:38,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:38,384 INFO L124 PetriNetUnfolderBase]: 318/623 cut-off events. [2024-06-21 21:20:38,384 INFO L125 PetriNetUnfolderBase]: For 12820/12820 co-relation queries the response was YES. [2024-06-21 21:20:38,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 623 events. 318/623 cut-off events. For 12820/12820 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3147 event pairs, 67 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3141. Up to 524 conditions per place. [2024-06-21 21:20:38,388 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 118 selfloop transitions, 23 changer transitions 0/145 dead transitions. [2024-06-21 21:20:38,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 145 transitions, 1381 flow [2024-06-21 21:20:38,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:20:38,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:20:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:20:38,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:20:38,389 INFO L175 Difference]: Start difference. First operand has 151 places, 129 transitions, 1003 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:20:38,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 145 transitions, 1381 flow [2024-06-21 21:20:38,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 145 transitions, 1295 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:38,411 INFO L231 Difference]: Finished difference. Result has 156 places, 132 transitions, 1023 flow [2024-06-21 21:20:38,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1023, PETRI_PLACES=156, PETRI_TRANSITIONS=132} [2024-06-21 21:20:38,412 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-21 21:20:38,412 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 132 transitions, 1023 flow [2024-06-21 21:20:38,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:38,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:38,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:38,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-21 21:20:38,412 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:38,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:38,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2071009356, now seen corresponding path program 3 times [2024-06-21 21:20:38,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:38,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570117011] [2024-06-21 21:20:38,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:38,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:39,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:39,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570117011] [2024-06-21 21:20:39,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570117011] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:39,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:39,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:39,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105639438] [2024-06-21 21:20:39,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:39,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:39,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:39,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:39,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:39,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:39,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 132 transitions, 1023 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:39,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:39,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:39,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:39,461 INFO L124 PetriNetUnfolderBase]: 324/630 cut-off events. [2024-06-21 21:20:39,461 INFO L125 PetriNetUnfolderBase]: For 14115/14115 co-relation queries the response was YES. [2024-06-21 21:20:39,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3318 conditions, 630 events. 324/630 cut-off events. For 14115/14115 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3184 event pairs, 53 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 3249. Up to 420 conditions per place. [2024-06-21 21:20:39,464 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 91 selfloop transitions, 53 changer transitions 0/148 dead transitions. [2024-06-21 21:20:39,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 148 transitions, 1425 flow [2024-06-21 21:20:39,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:39,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 21:20:39,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 21:20:39,465 INFO L175 Difference]: Start difference. First operand has 156 places, 132 transitions, 1023 flow. Second operand 10 states and 136 transitions. [2024-06-21 21:20:39,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 148 transitions, 1425 flow [2024-06-21 21:20:39,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 1327 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-21 21:20:39,492 INFO L231 Difference]: Finished difference. Result has 156 places, 135 transitions, 1097 flow [2024-06-21 21:20:39,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1097, PETRI_PLACES=156, PETRI_TRANSITIONS=135} [2024-06-21 21:20:39,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-21 21:20:39,493 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 135 transitions, 1097 flow [2024-06-21 21:20:39,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:39,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:39,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:39,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-21 21:20:39,494 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:39,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:39,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1717690444, now seen corresponding path program 4 times [2024-06-21 21:20:39,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:39,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927285741] [2024-06-21 21:20:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:40,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:40,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:40,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927285741] [2024-06-21 21:20:40,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927285741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:40,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:40,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:40,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697044179] [2024-06-21 21:20:40,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:40,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:40,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:40,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:40,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:40,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:40,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 135 transitions, 1097 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:40,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:40,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:40,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:40,578 INFO L124 PetriNetUnfolderBase]: 330/640 cut-off events. [2024-06-21 21:20:40,578 INFO L125 PetriNetUnfolderBase]: For 15186/15186 co-relation queries the response was YES. [2024-06-21 21:20:40,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3499 conditions, 640 events. 330/640 cut-off events. For 15186/15186 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3257 event pairs, 59 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 3430. Up to 430 conditions per place. [2024-06-21 21:20:40,582 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 103 selfloop transitions, 45 changer transitions 0/152 dead transitions. [2024-06-21 21:20:40,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 152 transitions, 1533 flow [2024-06-21 21:20:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:40,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-21 21:20:40,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-21 21:20:40,583 INFO L175 Difference]: Start difference. First operand has 156 places, 135 transitions, 1097 flow. Second operand 10 states and 138 transitions. [2024-06-21 21:20:40,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 152 transitions, 1533 flow [2024-06-21 21:20:40,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 152 transitions, 1383 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:40,609 INFO L231 Difference]: Finished difference. Result has 158 places, 138 transitions, 1109 flow [2024-06-21 21:20:40,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1109, PETRI_PLACES=158, PETRI_TRANSITIONS=138} [2024-06-21 21:20:40,610 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-21 21:20:40,610 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 138 transitions, 1109 flow [2024-06-21 21:20:40,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:40,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:40,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:40,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-21 21:20:40,611 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:40,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:40,611 INFO L85 PathProgramCache]: Analyzing trace with hash -2060533836, now seen corresponding path program 5 times [2024-06-21 21:20:40,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:40,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269014944] [2024-06-21 21:20:40,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:40,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:41,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:41,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:41,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269014944] [2024-06-21 21:20:41,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269014944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:41,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:41,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:41,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329209641] [2024-06-21 21:20:41,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:41,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:41,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:41,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:41,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:41,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:41,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 138 transitions, 1109 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:41,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:41,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:41,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:41,735 INFO L124 PetriNetUnfolderBase]: 338/654 cut-off events. [2024-06-21 21:20:41,735 INFO L125 PetriNetUnfolderBase]: For 15943/15943 co-relation queries the response was YES. [2024-06-21 21:20:41,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 654 events. 338/654 cut-off events. For 15943/15943 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3301 event pairs, 102 based on Foata normal form. 1/654 useless extension candidates. Maximal degree in co-relation 3562. Up to 579 conditions per place. [2024-06-21 21:20:41,739 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 130 selfloop transitions, 21 changer transitions 0/155 dead transitions. [2024-06-21 21:20:41,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 155 transitions, 1580 flow [2024-06-21 21:20:41,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:20:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:20:41,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-21 21:20:41,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-21 21:20:41,748 INFO L175 Difference]: Start difference. First operand has 158 places, 138 transitions, 1109 flow. Second operand 11 states and 137 transitions. [2024-06-21 21:20:41,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 155 transitions, 1580 flow [2024-06-21 21:20:41,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 155 transitions, 1438 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:41,779 INFO L231 Difference]: Finished difference. Result has 162 places, 144 transitions, 1096 flow [2024-06-21 21:20:41,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1096, PETRI_PLACES=162, PETRI_TRANSITIONS=144} [2024-06-21 21:20:41,780 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-06-21 21:20:41,780 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 144 transitions, 1096 flow [2024-06-21 21:20:41,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:41,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:41,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:41,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-21 21:20:41,781 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:41,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:41,781 INFO L85 PathProgramCache]: Analyzing trace with hash -2060890026, now seen corresponding path program 6 times [2024-06-21 21:20:41,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:41,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500237990] [2024-06-21 21:20:41,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:41,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:42,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:42,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500237990] [2024-06-21 21:20:42,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500237990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:42,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:42,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:42,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161025358] [2024-06-21 21:20:42,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:42,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:42,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:42,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:42,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:42,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:42,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 144 transitions, 1096 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:42,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:42,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:42,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:42,950 INFO L124 PetriNetUnfolderBase]: 339/656 cut-off events. [2024-06-21 21:20:42,951 INFO L125 PetriNetUnfolderBase]: For 16823/16823 co-relation queries the response was YES. [2024-06-21 21:20:42,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 656 events. 339/656 cut-off events. For 16823/16823 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3338 event pairs, 102 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 3518. Up to 582 conditions per place. [2024-06-21 21:20:42,955 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 20 changer transitions 0/155 dead transitions. [2024-06-21 21:20:42,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 155 transitions, 1472 flow [2024-06-21 21:20:42,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-21 21:20:42,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-21 21:20:42,956 INFO L175 Difference]: Start difference. First operand has 162 places, 144 transitions, 1096 flow. Second operand 10 states and 126 transitions. [2024-06-21 21:20:42,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 155 transitions, 1472 flow [2024-06-21 21:20:42,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 155 transitions, 1400 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-21 21:20:42,988 INFO L231 Difference]: Finished difference. Result has 166 places, 146 transitions, 1130 flow [2024-06-21 21:20:42,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1130, PETRI_PLACES=166, PETRI_TRANSITIONS=146} [2024-06-21 21:20:42,988 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-21 21:20:42,988 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 146 transitions, 1130 flow [2024-06-21 21:20:42,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:42,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:42,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:42,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-21 21:20:42,989 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:42,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1938858070, now seen corresponding path program 7 times [2024-06-21 21:20:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:42,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842529966] [2024-06-21 21:20:42,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:42,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:43,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:43,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:43,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842529966] [2024-06-21 21:20:43,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842529966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:43,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:43,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:43,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34623535] [2024-06-21 21:20:43,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:43,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:43,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:43,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:43,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:43,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 146 transitions, 1130 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:43,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:43,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:43,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:44,041 INFO L124 PetriNetUnfolderBase]: 340/657 cut-off events. [2024-06-21 21:20:44,041 INFO L125 PetriNetUnfolderBase]: For 17527/17527 co-relation queries the response was YES. [2024-06-21 21:20:44,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3623 conditions, 657 events. 340/657 cut-off events. For 17527/17527 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3332 event pairs, 59 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 3549. Up to 447 conditions per place. [2024-06-21 21:20:44,046 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 108 selfloop transitions, 50 changer transitions 0/162 dead transitions. [2024-06-21 21:20:44,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 162 transitions, 1604 flow [2024-06-21 21:20:44,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:44,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:44,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-21 21:20:44,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-21 21:20:44,052 INFO L175 Difference]: Start difference. First operand has 166 places, 146 transitions, 1130 flow. Second operand 10 states and 137 transitions. [2024-06-21 21:20:44,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 162 transitions, 1604 flow [2024-06-21 21:20:44,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 162 transitions, 1520 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:44,083 INFO L231 Difference]: Finished difference. Result has 168 places, 149 transitions, 1232 flow [2024-06-21 21:20:44,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1232, PETRI_PLACES=168, PETRI_TRANSITIONS=149} [2024-06-21 21:20:44,083 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-21 21:20:44,083 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 149 transitions, 1232 flow [2024-06-21 21:20:44,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:44,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:44,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:44,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-21 21:20:44,084 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:44,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:44,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1670446983, now seen corresponding path program 1 times [2024-06-21 21:20:44,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:44,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970612279] [2024-06-21 21:20:44,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:44,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:45,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:45,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:45,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970612279] [2024-06-21 21:20:45,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970612279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:45,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:45,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:45,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796032197] [2024-06-21 21:20:45,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:45,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:45,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:45,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:45,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:45,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:45,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 149 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:45,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:45,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:45,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:45,375 INFO L124 PetriNetUnfolderBase]: 344/667 cut-off events. [2024-06-21 21:20:45,376 INFO L125 PetriNetUnfolderBase]: For 18382/18382 co-relation queries the response was YES. [2024-06-21 21:20:45,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 667 events. 344/667 cut-off events. For 18382/18382 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3395 event pairs, 51 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 3695. Up to 577 conditions per place. [2024-06-21 21:20:45,380 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 138 selfloop transitions, 22 changer transitions 0/164 dead transitions. [2024-06-21 21:20:45,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 1602 flow [2024-06-21 21:20:45,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:45,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 21:20:45,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 21:20:45,381 INFO L175 Difference]: Start difference. First operand has 168 places, 149 transitions, 1232 flow. Second operand 10 states and 131 transitions. [2024-06-21 21:20:45,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 1602 flow [2024-06-21 21:20:45,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 164 transitions, 1438 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:45,418 INFO L231 Difference]: Finished difference. Result has 170 places, 150 transitions, 1132 flow [2024-06-21 21:20:45,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1132, PETRI_PLACES=170, PETRI_TRANSITIONS=150} [2024-06-21 21:20:45,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-21 21:20:45,418 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 150 transitions, 1132 flow [2024-06-21 21:20:45,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:45,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:45,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:45,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-21 21:20:45,419 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:45,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash -316665709, now seen corresponding path program 2 times [2024-06-21 21:20:45,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:45,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16842879] [2024-06-21 21:20:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:45,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:46,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:46,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16842879] [2024-06-21 21:20:46,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16842879] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:46,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:46,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737441134] [2024-06-21 21:20:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:46,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:46,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:46,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:46,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:46,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:46,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 150 transitions, 1132 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:46,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:46,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:46,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:46,483 INFO L124 PetriNetUnfolderBase]: 348/676 cut-off events. [2024-06-21 21:20:46,484 INFO L125 PetriNetUnfolderBase]: For 18672/18672 co-relation queries the response was YES. [2024-06-21 21:20:46,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3699 conditions, 676 events. 348/676 cut-off events. For 18672/18672 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3452 event pairs, 62 based on Foata normal form. 2/677 useless extension candidates. Maximal degree in co-relation 3623. Up to 582 conditions per place. [2024-06-21 21:20:46,488 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 19 changer transitions 0/166 dead transitions. [2024-06-21 21:20:46,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 166 transitions, 1510 flow [2024-06-21 21:20:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:46,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:46,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 21:20:46,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 21:20:46,489 INFO L175 Difference]: Start difference. First operand has 170 places, 150 transitions, 1132 flow. Second operand 10 states and 131 transitions. [2024-06-21 21:20:46,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 166 transitions, 1510 flow [2024-06-21 21:20:46,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 166 transitions, 1456 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:46,523 INFO L231 Difference]: Finished difference. Result has 172 places, 151 transitions, 1138 flow [2024-06-21 21:20:46,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1138, PETRI_PLACES=172, PETRI_TRANSITIONS=151} [2024-06-21 21:20:46,524 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-21 21:20:46,524 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 151 transitions, 1138 flow [2024-06-21 21:20:46,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:46,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:46,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:46,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-21 21:20:46,525 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:46,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:46,525 INFO L85 PathProgramCache]: Analyzing trace with hash -318539659, now seen corresponding path program 3 times [2024-06-21 21:20:46,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:46,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390851218] [2024-06-21 21:20:46,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:46,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:47,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:47,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390851218] [2024-06-21 21:20:47,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390851218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:47,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:47,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:47,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438425280] [2024-06-21 21:20:47,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:47,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:47,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:47,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:47,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:47,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:47,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 151 transitions, 1138 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:47,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:47,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:47,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:47,469 INFO L124 PetriNetUnfolderBase]: 352/683 cut-off events. [2024-06-21 21:20:47,469 INFO L125 PetriNetUnfolderBase]: For 19403/19403 co-relation queries the response was YES. [2024-06-21 21:20:47,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3751 conditions, 683 events. 352/683 cut-off events. For 19403/19403 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3483 event pairs, 51 based on Foata normal form. 2/684 useless extension candidates. Maximal degree in co-relation 3674. Up to 579 conditions per place. [2024-06-21 21:20:47,474 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 20 changer transitions 0/169 dead transitions. [2024-06-21 21:20:47,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 169 transitions, 1530 flow [2024-06-21 21:20:47,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:47,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:47,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 21:20:47,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:20:47,475 INFO L175 Difference]: Start difference. First operand has 172 places, 151 transitions, 1138 flow. Second operand 10 states and 132 transitions. [2024-06-21 21:20:47,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 169 transitions, 1530 flow [2024-06-21 21:20:47,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 169 transitions, 1480 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:47,517 INFO L231 Difference]: Finished difference. Result has 174 places, 152 transitions, 1152 flow [2024-06-21 21:20:47,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1152, PETRI_PLACES=174, PETRI_TRANSITIONS=152} [2024-06-21 21:20:47,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-21 21:20:47,517 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 152 transitions, 1152 flow [2024-06-21 21:20:47,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:47,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:47,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:47,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-21 21:20:47,518 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:47,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:47,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1931323545, now seen corresponding path program 1 times [2024-06-21 21:20:47,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:47,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778056206] [2024-06-21 21:20:47,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:47,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:48,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:48,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:48,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778056206] [2024-06-21 21:20:48,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778056206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:48,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:48,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:48,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428194361] [2024-06-21 21:20:48,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:48,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:48,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:48,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:48,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:48,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 152 transitions, 1152 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:48,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:48,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:48,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:48,666 INFO L124 PetriNetUnfolderBase]: 355/688 cut-off events. [2024-06-21 21:20:48,667 INFO L125 PetriNetUnfolderBase]: For 19439/19439 co-relation queries the response was YES. [2024-06-21 21:20:48,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 688 events. 355/688 cut-off events. For 19439/19439 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3516 event pairs, 52 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 3740. Up to 598 conditions per place. [2024-06-21 21:20:48,672 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 25 changer transitions 0/168 dead transitions. [2024-06-21 21:20:48,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 168 transitions, 1570 flow [2024-06-21 21:20:48,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:20:48,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:20:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 21:20:48,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 21:20:48,673 INFO L175 Difference]: Start difference. First operand has 174 places, 152 transitions, 1152 flow. Second operand 11 states and 142 transitions. [2024-06-21 21:20:48,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 168 transitions, 1570 flow [2024-06-21 21:20:48,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 168 transitions, 1516 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:48,718 INFO L231 Difference]: Finished difference. Result has 177 places, 154 transitions, 1211 flow [2024-06-21 21:20:48,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1211, PETRI_PLACES=177, PETRI_TRANSITIONS=154} [2024-06-21 21:20:48,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 146 predicate places. [2024-06-21 21:20:48,719 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 154 transitions, 1211 flow [2024-06-21 21:20:48,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:48,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:48,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:48,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-21 21:20:48,720 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:48,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:48,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1097303747, now seen corresponding path program 4 times [2024-06-21 21:20:48,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:48,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090986327] [2024-06-21 21:20:48,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:48,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:48,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:49,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:49,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090986327] [2024-06-21 21:20:49,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090986327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:49,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:49,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:49,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139529882] [2024-06-21 21:20:49,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:49,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:49,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:49,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:49,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:49,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 154 transitions, 1211 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:49,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:49,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:49,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:49,573 INFO L124 PetriNetUnfolderBase]: 362/701 cut-off events. [2024-06-21 21:20:49,574 INFO L125 PetriNetUnfolderBase]: For 21164/21164 co-relation queries the response was YES. [2024-06-21 21:20:49,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3916 conditions, 701 events. 362/701 cut-off events. For 21164/21164 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3603 event pairs, 66 based on Foata normal form. 2/702 useless extension candidates. Maximal degree in co-relation 3837. Up to 618 conditions per place. [2024-06-21 21:20:49,579 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 145 selfloop transitions, 21 changer transitions 0/170 dead transitions. [2024-06-21 21:20:49,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 170 transitions, 1611 flow [2024-06-21 21:20:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:49,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:20:49,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:20:49,580 INFO L175 Difference]: Start difference. First operand has 177 places, 154 transitions, 1211 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:20:49,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 170 transitions, 1611 flow [2024-06-21 21:20:49,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 170 transitions, 1514 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-21 21:20:49,632 INFO L231 Difference]: Finished difference. Result has 178 places, 157 transitions, 1198 flow [2024-06-21 21:20:49,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1198, PETRI_PLACES=178, PETRI_TRANSITIONS=157} [2024-06-21 21:20:49,633 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 147 predicate places. [2024-06-21 21:20:49,633 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 157 transitions, 1198 flow [2024-06-21 21:20:49,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:49,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:49,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:49,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-21 21:20:49,633 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:49,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:49,634 INFO L85 PathProgramCache]: Analyzing trace with hash 898001957, now seen corresponding path program 5 times [2024-06-21 21:20:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:49,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375311565] [2024-06-21 21:20:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:50,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:50,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:50,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375311565] [2024-06-21 21:20:50,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375311565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:50,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:50,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:50,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401544828] [2024-06-21 21:20:50,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:50,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:50,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:50,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:50,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:50,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:50,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 157 transitions, 1198 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:50,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:50,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:50,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:50,576 INFO L124 PetriNetUnfolderBase]: 366/709 cut-off events. [2024-06-21 21:20:50,576 INFO L125 PetriNetUnfolderBase]: For 22031/22031 co-relation queries the response was YES. [2024-06-21 21:20:50,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 709 events. 366/709 cut-off events. For 22031/22031 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3664 event pairs, 66 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 3866. Up to 626 conditions per place. [2024-06-21 21:20:50,581 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 21 changer transitions 0/171 dead transitions. [2024-06-21 21:20:50,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 171 transitions, 1586 flow [2024-06-21 21:20:50,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:50,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:50,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:20:50,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:20:50,582 INFO L175 Difference]: Start difference. First operand has 178 places, 157 transitions, 1198 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:20:50,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 171 transitions, 1586 flow [2024-06-21 21:20:50,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 171 transitions, 1528 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-21 21:20:50,634 INFO L231 Difference]: Finished difference. Result has 181 places, 158 transitions, 1210 flow [2024-06-21 21:20:50,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1210, PETRI_PLACES=181, PETRI_TRANSITIONS=158} [2024-06-21 21:20:50,635 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-21 21:20:50,635 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 158 transitions, 1210 flow [2024-06-21 21:20:50,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:50,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:50,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:50,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-21 21:20:50,636 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:50,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:50,636 INFO L85 PathProgramCache]: Analyzing trace with hash -950914925, now seen corresponding path program 6 times [2024-06-21 21:20:50,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:50,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822238445] [2024-06-21 21:20:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:50,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:50,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:51,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:51,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822238445] [2024-06-21 21:20:51,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822238445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:51,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:51,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:51,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066002516] [2024-06-21 21:20:51,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:51,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:51,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:51,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:51,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:51,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:51,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 158 transitions, 1210 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:51,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:51,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:51,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:51,704 INFO L124 PetriNetUnfolderBase]: 370/716 cut-off events. [2024-06-21 21:20:51,705 INFO L125 PetriNetUnfolderBase]: For 22965/22965 co-relation queries the response was YES. [2024-06-21 21:20:51,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4000 conditions, 716 events. 370/716 cut-off events. For 22965/22965 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3703 event pairs, 56 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 3919. Up to 586 conditions per place. [2024-06-21 21:20:51,709 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 135 selfloop transitions, 34 changer transitions 0/173 dead transitions. [2024-06-21 21:20:51,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 173 transitions, 1606 flow [2024-06-21 21:20:51,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:51,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 21:20:51,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 21:20:51,710 INFO L175 Difference]: Start difference. First operand has 181 places, 158 transitions, 1210 flow. Second operand 10 states and 134 transitions. [2024-06-21 21:20:51,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 173 transitions, 1606 flow [2024-06-21 21:20:51,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 173 transitions, 1538 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 21:20:51,757 INFO L231 Difference]: Finished difference. Result has 182 places, 159 transitions, 1240 flow [2024-06-21 21:20:51,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1240, PETRI_PLACES=182, PETRI_TRANSITIONS=159} [2024-06-21 21:20:51,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-21 21:20:51,758 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 159 transitions, 1240 flow [2024-06-21 21:20:51,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:51,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:51,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:51,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-21 21:20:51,759 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:51,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:51,759 INFO L85 PathProgramCache]: Analyzing trace with hash 296780243, now seen corresponding path program 7 times [2024-06-21 21:20:51,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:51,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204445078] [2024-06-21 21:20:51,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:51,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:52,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:52,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204445078] [2024-06-21 21:20:52,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204445078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:52,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:52,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:52,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955591017] [2024-06-21 21:20:52,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:52,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:52,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:52,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:52,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:52,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 159 transitions, 1240 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:52,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:52,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:52,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:52,783 INFO L124 PetriNetUnfolderBase]: 374/725 cut-off events. [2024-06-21 21:20:52,783 INFO L125 PetriNetUnfolderBase]: For 24047/24047 co-relation queries the response was YES. [2024-06-21 21:20:52,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 725 events. 374/725 cut-off events. For 24047/24047 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3759 event pairs, 61 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 3998. Up to 621 conditions per place. [2024-06-21 21:20:52,788 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 153 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2024-06-21 21:20:52,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 178 transitions, 1660 flow [2024-06-21 21:20:52,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:52,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 21:20:52,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:20:52,818 INFO L175 Difference]: Start difference. First operand has 182 places, 159 transitions, 1240 flow. Second operand 10 states and 132 transitions. [2024-06-21 21:20:52,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 178 transitions, 1660 flow [2024-06-21 21:20:52,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 178 transitions, 1572 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:52,873 INFO L231 Difference]: Finished difference. Result has 184 places, 160 transitions, 1226 flow [2024-06-21 21:20:52,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1226, PETRI_PLACES=184, PETRI_TRANSITIONS=160} [2024-06-21 21:20:52,874 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-21 21:20:52,874 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 160 transitions, 1226 flow [2024-06-21 21:20:52,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:52,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:52,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:52,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-21 21:20:52,874 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:52,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:52,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1242580943, now seen corresponding path program 8 times [2024-06-21 21:20:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:52,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078993531] [2024-06-21 21:20:52,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:52,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:53,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:53,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078993531] [2024-06-21 21:20:53,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078993531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:53,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:53,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:53,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641181805] [2024-06-21 21:20:53,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:53,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:53,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:53,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:53,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:53,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:53,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 160 transitions, 1226 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:53,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:53,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:53,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:53,925 INFO L124 PetriNetUnfolderBase]: 378/735 cut-off events. [2024-06-21 21:20:53,925 INFO L125 PetriNetUnfolderBase]: For 25120/25120 co-relation queries the response was YES. [2024-06-21 21:20:53,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4113 conditions, 735 events. 378/735 cut-off events. For 25120/25120 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3834 event pairs, 67 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 4031. Up to 643 conditions per place. [2024-06-21 21:20:53,930 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 149 selfloop transitions, 23 changer transitions 0/176 dead transitions. [2024-06-21 21:20:53,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 176 transitions, 1636 flow [2024-06-21 21:20:53,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:53,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 21:20:53,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 21:20:53,931 INFO L175 Difference]: Start difference. First operand has 184 places, 160 transitions, 1226 flow. Second operand 10 states and 131 transitions. [2024-06-21 21:20:53,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 176 transitions, 1636 flow [2024-06-21 21:20:53,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 176 transitions, 1572 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:53,999 INFO L231 Difference]: Finished difference. Result has 186 places, 161 transitions, 1242 flow [2024-06-21 21:20:53,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1242, PETRI_PLACES=186, PETRI_TRANSITIONS=161} [2024-06-21 21:20:53,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-21 21:20:54,000 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 161 transitions, 1242 flow [2024-06-21 21:20:54,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:54,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:54,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:54,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-21 21:20:54,000 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:54,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:54,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1270138703, now seen corresponding path program 9 times [2024-06-21 21:20:54,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:54,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521001630] [2024-06-21 21:20:54,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:54,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:54,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:54,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:54,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521001630] [2024-06-21 21:20:54,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521001630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:54,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:54,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:54,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103550530] [2024-06-21 21:20:54,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:54,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:54,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:54,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:54,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:54,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:54,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 161 transitions, 1242 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:54,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:54,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:54,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:55,100 INFO L124 PetriNetUnfolderBase]: 382/743 cut-off events. [2024-06-21 21:20:55,100 INFO L125 PetriNetUnfolderBase]: For 26156/26156 co-relation queries the response was YES. [2024-06-21 21:20:55,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4170 conditions, 743 events. 382/743 cut-off events. For 26156/26156 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3900 event pairs, 66 based on Foata normal form. 2/744 useless extension candidates. Maximal degree in co-relation 4087. Up to 637 conditions per place. [2024-06-21 21:20:55,105 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 150 selfloop transitions, 24 changer transitions 0/178 dead transitions. [2024-06-21 21:20:55,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 178 transitions, 1660 flow [2024-06-21 21:20:55,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:55,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:55,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 21:20:55,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 21:20:55,106 INFO L175 Difference]: Start difference. First operand has 186 places, 161 transitions, 1242 flow. Second operand 10 states and 133 transitions. [2024-06-21 21:20:55,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 178 transitions, 1660 flow [2024-06-21 21:20:55,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 178 transitions, 1590 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:55,170 INFO L231 Difference]: Finished difference. Result has 188 places, 162 transitions, 1256 flow [2024-06-21 21:20:55,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1256, PETRI_PLACES=188, PETRI_TRANSITIONS=162} [2024-06-21 21:20:55,171 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-21 21:20:55,171 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 162 transitions, 1256 flow [2024-06-21 21:20:55,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:55,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:55,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:55,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-21 21:20:55,171 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:55,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:55,172 INFO L85 PathProgramCache]: Analyzing trace with hash -122359903, now seen corresponding path program 10 times [2024-06-21 21:20:55,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:55,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299170938] [2024-06-21 21:20:55,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:55,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:55,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:55,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299170938] [2024-06-21 21:20:55,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299170938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:55,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:55,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:55,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96159988] [2024-06-21 21:20:55,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:55,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:55,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:55,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:55,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:55,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:55,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 162 transitions, 1256 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:55,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:55,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:55,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:56,186 INFO L124 PetriNetUnfolderBase]: 386/751 cut-off events. [2024-06-21 21:20:56,186 INFO L125 PetriNetUnfolderBase]: For 27168/27168 co-relation queries the response was YES. [2024-06-21 21:20:56,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 751 events. 386/751 cut-off events. For 27168/27168 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3955 event pairs, 38 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 4147. Up to 610 conditions per place. [2024-06-21 21:20:56,192 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 153 selfloop transitions, 24 changer transitions 0/181 dead transitions. [2024-06-21 21:20:56,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 181 transitions, 1686 flow [2024-06-21 21:20:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:20:56,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:20:56,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:20:56,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:20:56,193 INFO L175 Difference]: Start difference. First operand has 188 places, 162 transitions, 1256 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:20:56,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 181 transitions, 1686 flow [2024-06-21 21:20:56,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 181 transitions, 1612 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:56,268 INFO L231 Difference]: Finished difference. Result has 190 places, 163 transitions, 1268 flow [2024-06-21 21:20:56,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1268, PETRI_PLACES=190, PETRI_TRANSITIONS=163} [2024-06-21 21:20:56,269 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 159 predicate places. [2024-06-21 21:20:56,269 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 163 transitions, 1268 flow [2024-06-21 21:20:56,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:56,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:56,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:56,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-21 21:20:56,270 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:56,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:56,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1242586895, now seen corresponding path program 2 times [2024-06-21 21:20:56,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:56,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069451061] [2024-06-21 21:20:56,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:56,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:56,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:56,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069451061] [2024-06-21 21:20:56,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069451061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:56,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:56,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:20:56,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226800948] [2024-06-21 21:20:56,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:56,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:20:56,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:56,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:20:56,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:20:57,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:57,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 163 transitions, 1268 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:57,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:57,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:57,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:57,248 INFO L124 PetriNetUnfolderBase]: 395/766 cut-off events. [2024-06-21 21:20:57,248 INFO L125 PetriNetUnfolderBase]: For 28747/28747 co-relation queries the response was YES. [2024-06-21 21:20:57,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4367 conditions, 766 events. 395/766 cut-off events. For 28747/28747 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4052 event pairs, 71 based on Foata normal form. 2/767 useless extension candidates. Maximal degree in co-relation 4282. Up to 671 conditions per place. [2024-06-21 21:20:57,254 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 153 selfloop transitions, 26 changer transitions 0/183 dead transitions. [2024-06-21 21:20:57,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 183 transitions, 1752 flow [2024-06-21 21:20:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:20:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:20:57,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 21:20:57,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:20:57,255 INFO L175 Difference]: Start difference. First operand has 190 places, 163 transitions, 1268 flow. Second operand 11 states and 143 transitions. [2024-06-21 21:20:57,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 183 transitions, 1752 flow [2024-06-21 21:20:57,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 183 transitions, 1676 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:57,323 INFO L231 Difference]: Finished difference. Result has 194 places, 167 transitions, 1336 flow [2024-06-21 21:20:57,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1336, PETRI_PLACES=194, PETRI_TRANSITIONS=167} [2024-06-21 21:20:57,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-21 21:20:57,323 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 167 transitions, 1336 flow [2024-06-21 21:20:57,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:20:57,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:57,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:57,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-21 21:20:57,324 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:57,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:57,324 INFO L85 PathProgramCache]: Analyzing trace with hash 96015025, now seen corresponding path program 1 times [2024-06-21 21:20:57,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:57,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390149203] [2024-06-21 21:20:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:58,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:58,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:58,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390149203] [2024-06-21 21:20:58,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390149203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:58,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:58,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:20:58,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505812106] [2024-06-21 21:20:58,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:58,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:20:58,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:58,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:20:58,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:20:58,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:58,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 167 transitions, 1336 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:20:58,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:58,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:58,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:58,577 INFO L124 PetriNetUnfolderBase]: 418/815 cut-off events. [2024-06-21 21:20:58,578 INFO L125 PetriNetUnfolderBase]: For 43729/43729 co-relation queries the response was YES. [2024-06-21 21:20:58,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4701 conditions, 815 events. 418/815 cut-off events. For 43729/43729 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4356 event pairs, 85 based on Foata normal form. 13/827 useless extension candidates. Maximal degree in co-relation 4614. Up to 664 conditions per place. [2024-06-21 21:20:58,583 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 150 selfloop transitions, 25 changer transitions 10/189 dead transitions. [2024-06-21 21:20:58,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 189 transitions, 1910 flow [2024-06-21 21:20:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:20:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:20:58,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 21:20:58,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:20:58,584 INFO L175 Difference]: Start difference. First operand has 194 places, 167 transitions, 1336 flow. Second operand 12 states and 160 transitions. [2024-06-21 21:20:58,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 189 transitions, 1910 flow [2024-06-21 21:20:58,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 189 transitions, 1808 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-21 21:20:58,650 INFO L231 Difference]: Finished difference. Result has 199 places, 164 transitions, 1291 flow [2024-06-21 21:20:58,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1291, PETRI_PLACES=199, PETRI_TRANSITIONS=164} [2024-06-21 21:20:58,650 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-21 21:20:58,650 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 164 transitions, 1291 flow [2024-06-21 21:20:58,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:20:58,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:58,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:58,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-21 21:20:58,651 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:58,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:58,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1972404093, now seen corresponding path program 11 times [2024-06-21 21:20:58,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:58,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820533976] [2024-06-21 21:20:58,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:58,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:20:59,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:20:59,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:20:59,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820533976] [2024-06-21 21:20:59,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820533976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:20:59,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:20:59,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:20:59,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754548601] [2024-06-21 21:20:59,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:20:59,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:20:59,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:20:59,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:20:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:20:59,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:20:59,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 164 transitions, 1291 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:59,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:20:59,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:20:59,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:20:59,571 INFO L124 PetriNetUnfolderBase]: 396/773 cut-off events. [2024-06-21 21:20:59,572 INFO L125 PetriNetUnfolderBase]: For 31503/31503 co-relation queries the response was YES. [2024-06-21 21:20:59,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4449 conditions, 773 events. 396/773 cut-off events. For 31503/31503 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4116 event pairs, 74 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 4360. Up to 657 conditions per place. [2024-06-21 21:20:59,578 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 142 selfloop transitions, 32 changer transitions 0/178 dead transitions. [2024-06-21 21:20:59,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 178 transitions, 1705 flow [2024-06-21 21:20:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:20:59,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:20:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 21:20:59,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 21:20:59,579 INFO L175 Difference]: Start difference. First operand has 199 places, 164 transitions, 1291 flow. Second operand 9 states and 119 transitions. [2024-06-21 21:20:59,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 178 transitions, 1705 flow [2024-06-21 21:20:59,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 178 transitions, 1627 flow, removed 10 selfloop flow, removed 14 redundant places. [2024-06-21 21:20:59,654 INFO L231 Difference]: Finished difference. Result has 194 places, 165 transitions, 1321 flow [2024-06-21 21:20:59,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1321, PETRI_PLACES=194, PETRI_TRANSITIONS=165} [2024-06-21 21:20:59,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-21 21:20:59,655 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 165 transitions, 1321 flow [2024-06-21 21:20:59,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:20:59,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:20:59,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:20:59,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-21 21:20:59,655 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:20:59,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:20:59,656 INFO L85 PathProgramCache]: Analyzing trace with hash 340418729, now seen corresponding path program 12 times [2024-06-21 21:20:59,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:20:59,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021054981] [2024-06-21 21:20:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:20:59,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:20:59,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:00,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:00,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:00,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021054981] [2024-06-21 21:21:00,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021054981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:00,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:00,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:00,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260515235] [2024-06-21 21:21:00,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:00,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:00,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:00,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:00,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:00,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:00,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 165 transitions, 1321 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:00,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:00,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:00,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:00,681 INFO L124 PetriNetUnfolderBase]: 400/779 cut-off events. [2024-06-21 21:21:00,681 INFO L125 PetriNetUnfolderBase]: For 32016/32016 co-relation queries the response was YES. [2024-06-21 21:21:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 779 events. 400/779 cut-off events. For 32016/32016 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4149 event pairs, 67 based on Foata normal form. 2/780 useless extension candidates. Maximal degree in co-relation 4431. Up to 623 conditions per place. [2024-06-21 21:21:00,687 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 141 selfloop transitions, 35 changer transitions 0/180 dead transitions. [2024-06-21 21:21:00,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 180 transitions, 1743 flow [2024-06-21 21:21:00,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:00,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:00,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-21 21:21:00,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-21 21:21:00,688 INFO L175 Difference]: Start difference. First operand has 194 places, 165 transitions, 1321 flow. Second operand 9 states and 121 transitions. [2024-06-21 21:21:00,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 180 transitions, 1743 flow [2024-06-21 21:21:00,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 180 transitions, 1645 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:00,756 INFO L231 Difference]: Finished difference. Result has 196 places, 166 transitions, 1339 flow [2024-06-21 21:21:00,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1227, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1339, PETRI_PLACES=196, PETRI_TRANSITIONS=166} [2024-06-21 21:21:00,757 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-21 21:21:00,757 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 166 transitions, 1339 flow [2024-06-21 21:21:00,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:00,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:00,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:00,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-21 21:21:00,757 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:00,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:00,758 INFO L85 PathProgramCache]: Analyzing trace with hash -21295759, now seen corresponding path program 13 times [2024-06-21 21:21:00,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:00,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128794408] [2024-06-21 21:21:00,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:00,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:00,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:01,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:01,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:01,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128794408] [2024-06-21 21:21:01,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128794408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:01,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:01,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:01,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114918942] [2024-06-21 21:21:01,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:01,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:01,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:01,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:01,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:01,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:01,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 166 transitions, 1339 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:01,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:01,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:01,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:01,800 INFO L124 PetriNetUnfolderBase]: 404/787 cut-off events. [2024-06-21 21:21:01,807 INFO L125 PetriNetUnfolderBase]: For 30894/30894 co-relation queries the response was YES. [2024-06-21 21:21:01,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 787 events. 404/787 cut-off events. For 30894/30894 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4216 event pairs, 43 based on Foata normal form. 2/788 useless extension candidates. Maximal degree in co-relation 4459. Up to 600 conditions per place. [2024-06-21 21:21:01,814 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 29 changer transitions 0/182 dead transitions. [2024-06-21 21:21:01,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 182 transitions, 1765 flow [2024-06-21 21:21:01,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:01,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:01,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 21:21:01,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 21:21:01,816 INFO L175 Difference]: Start difference. First operand has 196 places, 166 transitions, 1339 flow. Second operand 9 states and 118 transitions. [2024-06-21 21:21:01,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 182 transitions, 1765 flow [2024-06-21 21:21:01,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 182 transitions, 1663 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:01,886 INFO L231 Difference]: Finished difference. Result has 198 places, 167 transitions, 1341 flow [2024-06-21 21:21:01,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1241, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1341, PETRI_PLACES=198, PETRI_TRANSITIONS=167} [2024-06-21 21:21:01,888 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-21 21:21:01,888 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 167 transitions, 1341 flow [2024-06-21 21:21:01,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:01,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:01,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:01,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-21 21:21:01,889 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:01,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:01,889 INFO L85 PathProgramCache]: Analyzing trace with hash -380374427, now seen corresponding path program 14 times [2024-06-21 21:21:01,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339061275] [2024-06-21 21:21:01,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:01,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:02,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:02,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:02,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339061275] [2024-06-21 21:21:02,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339061275] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:02,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:02,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569624537] [2024-06-21 21:21:02,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:02,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:02,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:02,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:02,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:02,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:02,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 167 transitions, 1341 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:02,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:02,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:02,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:03,154 INFO L124 PetriNetUnfolderBase]: 411/804 cut-off events. [2024-06-21 21:21:03,155 INFO L125 PetriNetUnfolderBase]: For 29758/29758 co-relation queries the response was YES. [2024-06-21 21:21:03,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 804 events. 411/804 cut-off events. For 29758/29758 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4341 event pairs, 89 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 4501. Up to 696 conditions per place. [2024-06-21 21:21:03,161 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 30 changer transitions 0/183 dead transitions. [2024-06-21 21:21:03,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 183 transitions, 1798 flow [2024-06-21 21:21:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:03,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 21:21:03,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 21:21:03,162 INFO L175 Difference]: Start difference. First operand has 198 places, 167 transitions, 1341 flow. Second operand 9 states and 118 transitions. [2024-06-21 21:21:03,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 183 transitions, 1798 flow [2024-06-21 21:21:03,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 183 transitions, 1708 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:03,239 INFO L231 Difference]: Finished difference. Result has 201 places, 172 transitions, 1402 flow [2024-06-21 21:21:03,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1402, PETRI_PLACES=201, PETRI_TRANSITIONS=172} [2024-06-21 21:21:03,240 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-21 21:21:03,240 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 172 transitions, 1402 flow [2024-06-21 21:21:03,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:03,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:03,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:03,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-21 21:21:03,240 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:03,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:03,241 INFO L85 PathProgramCache]: Analyzing trace with hash 459323561, now seen corresponding path program 15 times [2024-06-21 21:21:03,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:03,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940853542] [2024-06-21 21:21:03,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:03,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:03,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:03,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940853542] [2024-06-21 21:21:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940853542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:03,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:03,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:03,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683233557] [2024-06-21 21:21:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:03,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:03,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 172 transitions, 1402 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:03,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:03,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:04,223 INFO L124 PetriNetUnfolderBase]: 422/825 cut-off events. [2024-06-21 21:21:04,223 INFO L125 PetriNetUnfolderBase]: For 30488/30488 co-relation queries the response was YES. [2024-06-21 21:21:04,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4799 conditions, 825 events. 422/825 cut-off events. For 30488/30488 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4486 event pairs, 86 based on Foata normal form. 2/826 useless extension candidates. Maximal degree in co-relation 4708. Up to 674 conditions per place. [2024-06-21 21:21:04,229 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 34 changer transitions 0/187 dead transitions. [2024-06-21 21:21:04,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 187 transitions, 1952 flow [2024-06-21 21:21:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:04,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 21:21:04,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:21:04,241 INFO L175 Difference]: Start difference. First operand has 201 places, 172 transitions, 1402 flow. Second operand 9 states and 120 transitions. [2024-06-21 21:21:04,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 187 transitions, 1952 flow [2024-06-21 21:21:04,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 187 transitions, 1874 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-21 21:21:04,312 INFO L231 Difference]: Finished difference. Result has 206 places, 174 transitions, 1458 flow [2024-06-21 21:21:04,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1458, PETRI_PLACES=206, PETRI_TRANSITIONS=174} [2024-06-21 21:21:04,313 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-21 21:21:04,313 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 174 transitions, 1458 flow [2024-06-21 21:21:04,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:04,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:04,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:04,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-21 21:21:04,313 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:04,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:04,314 INFO L85 PathProgramCache]: Analyzing trace with hash 658773221, now seen corresponding path program 16 times [2024-06-21 21:21:04,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:04,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928577963] [2024-06-21 21:21:04,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:04,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:05,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:05,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:05,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928577963] [2024-06-21 21:21:05,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928577963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:05,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:05,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:05,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359721854] [2024-06-21 21:21:05,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:05,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:05,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:05,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:05,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:05,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:05,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 174 transitions, 1458 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:05,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:05,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:05,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:05,335 INFO L124 PetriNetUnfolderBase]: 419/820 cut-off events. [2024-06-21 21:21:05,336 INFO L125 PetriNetUnfolderBase]: For 27568/27568 co-relation queries the response was YES. [2024-06-21 21:21:05,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4622 conditions, 820 events. 419/820 cut-off events. For 27568/27568 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4446 event pairs, 89 based on Foata normal form. 2/821 useless extension candidates. Maximal degree in co-relation 4530. Up to 712 conditions per place. [2024-06-21 21:21:05,342 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 151 selfloop transitions, 30 changer transitions 0/185 dead transitions. [2024-06-21 21:21:05,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 185 transitions, 1846 flow [2024-06-21 21:21:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 21:21:05,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 21:21:05,361 INFO L175 Difference]: Start difference. First operand has 206 places, 174 transitions, 1458 flow. Second operand 9 states and 118 transitions. [2024-06-21 21:21:05,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 185 transitions, 1846 flow [2024-06-21 21:21:05,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 185 transitions, 1769 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-21 21:21:05,431 INFO L231 Difference]: Finished difference. Result has 210 places, 174 transitions, 1447 flow [2024-06-21 21:21:05,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1447, PETRI_PLACES=210, PETRI_TRANSITIONS=174} [2024-06-21 21:21:05,431 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-21 21:21:05,431 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 174 transitions, 1447 flow [2024-06-21 21:21:05,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:05,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:05,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:05,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-21 21:21:05,432 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:05,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:05,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1972398141, now seen corresponding path program 3 times [2024-06-21 21:21:05,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:05,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793589399] [2024-06-21 21:21:05,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:05,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:06,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:06,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:06,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793589399] [2024-06-21 21:21:06,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793589399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:06,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:06,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:06,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774824046] [2024-06-21 21:21:06,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:06,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:06,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:06,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:06,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:06,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:06,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 174 transitions, 1447 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:06,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:06,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:06,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:06,560 INFO L124 PetriNetUnfolderBase]: 417/817 cut-off events. [2024-06-21 21:21:06,560 INFO L125 PetriNetUnfolderBase]: For 25580/25580 co-relation queries the response was YES. [2024-06-21 21:21:06,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 817 events. 417/817 cut-off events. For 25580/25580 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4447 event pairs, 79 based on Foata normal form. 1/817 useless extension candidates. Maximal degree in co-relation 4433. Up to 699 conditions per place. [2024-06-21 21:21:06,566 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 146 selfloop transitions, 40 changer transitions 0/190 dead transitions. [2024-06-21 21:21:06,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 190 transitions, 1925 flow [2024-06-21 21:21:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:21:06,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:06,567 INFO L175 Difference]: Start difference. First operand has 210 places, 174 transitions, 1447 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:21:06,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 190 transitions, 1925 flow [2024-06-21 21:21:06,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 190 transitions, 1853 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-21 21:21:06,648 INFO L231 Difference]: Finished difference. Result has 212 places, 177 transitions, 1545 flow [2024-06-21 21:21:06,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1545, PETRI_PLACES=212, PETRI_TRANSITIONS=177} [2024-06-21 21:21:06,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-21 21:21:06,649 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 177 transitions, 1545 flow [2024-06-21 21:21:06,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:06,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:06,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:06,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-21 21:21:06,650 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:06,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:06,650 INFO L85 PathProgramCache]: Analyzing trace with hash -32575357, now seen corresponding path program 17 times [2024-06-21 21:21:06,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:06,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666615160] [2024-06-21 21:21:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:06,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:07,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:07,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666615160] [2024-06-21 21:21:07,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666615160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:07,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:07,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:07,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242622258] [2024-06-21 21:21:07,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:07,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:07,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:07,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 177 transitions, 1545 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:07,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:07,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:07,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:07,747 INFO L124 PetriNetUnfolderBase]: 421/825 cut-off events. [2024-06-21 21:21:07,747 INFO L125 PetriNetUnfolderBase]: For 28031/28031 co-relation queries the response was YES. [2024-06-21 21:21:07,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4644 conditions, 825 events. 421/825 cut-off events. For 28031/28031 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4523 event pairs, 88 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 4550. Up to 697 conditions per place. [2024-06-21 21:21:07,754 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 37 changer transitions 0/190 dead transitions. [2024-06-21 21:21:07,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 190 transitions, 2012 flow [2024-06-21 21:21:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:07,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-21 21:21:07,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-21 21:21:07,755 INFO L175 Difference]: Start difference. First operand has 212 places, 177 transitions, 1545 flow. Second operand 9 states and 118 transitions. [2024-06-21 21:21:07,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 190 transitions, 2012 flow [2024-06-21 21:21:07,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 190 transitions, 1874 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-21 21:21:07,818 INFO L231 Difference]: Finished difference. Result has 214 places, 180 transitions, 1547 flow [2024-06-21 21:21:07,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1407, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1547, PETRI_PLACES=214, PETRI_TRANSITIONS=180} [2024-06-21 21:21:07,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-21 21:21:07,819 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 180 transitions, 1547 flow [2024-06-21 21:21:07,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:07,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:07,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:07,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-21 21:21:07,819 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:07,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1716429595, now seen corresponding path program 18 times [2024-06-21 21:21:07,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:07,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923927745] [2024-06-21 21:21:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:07,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:08,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:08,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923927745] [2024-06-21 21:21:08,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923927745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:08,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:08,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:08,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212207516] [2024-06-21 21:21:08,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:08,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:08,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:08,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:08,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:08,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:08,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 180 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:08,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:08,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:08,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:08,925 INFO L124 PetriNetUnfolderBase]: 428/842 cut-off events. [2024-06-21 21:21:08,925 INFO L125 PetriNetUnfolderBase]: For 28205/28205 co-relation queries the response was YES. [2024-06-21 21:21:08,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 842 events. 428/842 cut-off events. For 28205/28205 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4644 event pairs, 90 based on Foata normal form. 2/841 useless extension candidates. Maximal degree in co-relation 4607. Up to 709 conditions per place. [2024-06-21 21:21:08,931 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 154 selfloop transitions, 35 changer transitions 0/193 dead transitions. [2024-06-21 21:21:08,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 193 transitions, 2015 flow [2024-06-21 21:21:08,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:08,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 21:21:08,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:21:08,932 INFO L175 Difference]: Start difference. First operand has 214 places, 180 transitions, 1547 flow. Second operand 9 states and 120 transitions. [2024-06-21 21:21:08,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 193 transitions, 2015 flow [2024-06-21 21:21:08,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 193 transitions, 1891 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 21:21:08,993 INFO L231 Difference]: Finished difference. Result has 218 places, 184 transitions, 1576 flow [2024-06-21 21:21:08,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1427, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1576, PETRI_PLACES=218, PETRI_TRANSITIONS=184} [2024-06-21 21:21:08,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-21 21:21:08,993 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 184 transitions, 1576 flow [2024-06-21 21:21:08,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:08,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:08,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:08,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-21 21:21:08,994 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:08,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:08,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1477540127, now seen corresponding path program 19 times [2024-06-21 21:21:08,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:08,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824958123] [2024-06-21 21:21:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:08,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:09,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824958123] [2024-06-21 21:21:09,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824958123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:09,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:09,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941149845] [2024-06-21 21:21:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:09,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:09,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:09,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:09,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 184 transitions, 1576 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:09,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:09,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:09,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:10,008 INFO L124 PetriNetUnfolderBase]: 432/848 cut-off events. [2024-06-21 21:21:10,008 INFO L125 PetriNetUnfolderBase]: For 29343/29343 co-relation queries the response was YES. [2024-06-21 21:21:10,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4756 conditions, 848 events. 432/848 cut-off events. For 29343/29343 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4678 event pairs, 92 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 4658. Up to 717 conditions per place. [2024-06-21 21:21:10,015 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 154 selfloop transitions, 37 changer transitions 0/195 dead transitions. [2024-06-21 21:21:10,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 195 transitions, 2020 flow [2024-06-21 21:21:10,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-21 21:21:10,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-21 21:21:10,016 INFO L175 Difference]: Start difference. First operand has 218 places, 184 transitions, 1576 flow. Second operand 9 states and 119 transitions. [2024-06-21 21:21:10,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 195 transitions, 2020 flow [2024-06-21 21:21:10,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 195 transitions, 1904 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-21 21:21:10,084 INFO L231 Difference]: Finished difference. Result has 221 places, 186 transitions, 1582 flow [2024-06-21 21:21:10,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1462, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1582, PETRI_PLACES=221, PETRI_TRANSITIONS=186} [2024-06-21 21:21:10,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-21 21:21:10,085 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 186 transitions, 1582 flow [2024-06-21 21:21:10,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:10,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:10,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:10,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-21 21:21:10,086 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:10,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:10,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1915879255, now seen corresponding path program 20 times [2024-06-21 21:21:10,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153688141] [2024-06-21 21:21:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:10,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:10,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:10,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:10,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153688141] [2024-06-21 21:21:10,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153688141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:10,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:10,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-21 21:21:10,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088899375] [2024-06-21 21:21:10,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:10,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-21 21:21:10,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:10,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-21 21:21:10,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-21 21:21:10,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:10,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 186 transitions, 1582 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:10,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:10,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:10,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:11,238 INFO L124 PetriNetUnfolderBase]: 429/843 cut-off events. [2024-06-21 21:21:11,238 INFO L125 PetriNetUnfolderBase]: For 27074/27074 co-relation queries the response was YES. [2024-06-21 21:21:11,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4566 conditions, 843 events. 429/843 cut-off events. For 27074/27074 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4659 event pairs, 89 based on Foata normal form. 2/842 useless extension candidates. Maximal degree in co-relation 4467. Up to 686 conditions per place. [2024-06-21 21:21:11,243 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 40 changer transitions 0/196 dead transitions. [2024-06-21 21:21:11,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 196 transitions, 1988 flow [2024-06-21 21:21:11,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-21 21:21:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-21 21:21:11,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-21 21:21:11,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:21:11,244 INFO L175 Difference]: Start difference. First operand has 221 places, 186 transitions, 1582 flow. Second operand 9 states and 120 transitions. [2024-06-21 21:21:11,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 196 transitions, 1988 flow [2024-06-21 21:21:11,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 196 transitions, 1896 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-21 21:21:11,329 INFO L231 Difference]: Finished difference. Result has 225 places, 186 transitions, 1574 flow [2024-06-21 21:21:11,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1574, PETRI_PLACES=225, PETRI_TRANSITIONS=186} [2024-06-21 21:21:11,330 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-21 21:21:11,330 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 186 transitions, 1574 flow [2024-06-21 21:21:11,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 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) [2024-06-21 21:21:11,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:11,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:11,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-21 21:21:11,331 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:11,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:11,331 INFO L85 PathProgramCache]: Analyzing trace with hash -181611257, now seen corresponding path program 2 times [2024-06-21 21:21:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076321231] [2024-06-21 21:21:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:11,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:12,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:12,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076321231] [2024-06-21 21:21:12,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076321231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:12,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:12,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50344073] [2024-06-21 21:21:12,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:12,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:12,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:12,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:12,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:12,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:12,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 186 transitions, 1574 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:12,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:12,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:12,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:12,687 INFO L124 PetriNetUnfolderBase]: 449/889 cut-off events. [2024-06-21 21:21:12,687 INFO L125 PetriNetUnfolderBase]: For 41979/41979 co-relation queries the response was YES. [2024-06-21 21:21:12,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4834 conditions, 889 events. 449/889 cut-off events. For 41979/41979 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4937 event pairs, 90 based on Foata normal form. 12/900 useless extension candidates. Maximal degree in co-relation 4734. Up to 695 conditions per place. [2024-06-21 21:21:12,693 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 157 selfloop transitions, 38 changer transitions 7/206 dead transitions. [2024-06-21 21:21:12,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 206 transitions, 2164 flow [2024-06-21 21:21:12,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:12,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:12,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 21:21:12,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 21:21:12,694 INFO L175 Difference]: Start difference. First operand has 225 places, 186 transitions, 1574 flow. Second operand 11 states and 147 transitions. [2024-06-21 21:21:12,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 206 transitions, 2164 flow [2024-06-21 21:21:12,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 206 transitions, 1982 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:12,787 INFO L231 Difference]: Finished difference. Result has 227 places, 185 transitions, 1491 flow [2024-06-21 21:21:12,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1392, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1491, PETRI_PLACES=227, PETRI_TRANSITIONS=185} [2024-06-21 21:21:12,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-21 21:21:12,788 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 185 transitions, 1491 flow [2024-06-21 21:21:12,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:12,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:12,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:12,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-21 21:21:12,788 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:12,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1708795163, now seen corresponding path program 3 times [2024-06-21 21:21:12,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:12,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138741018] [2024-06-21 21:21:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:12,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:13,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138741018] [2024-06-21 21:21:13,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138741018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:13,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:13,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050414182] [2024-06-21 21:21:13,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:13,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:13,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:13,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:13,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 185 transitions, 1491 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:13,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:13,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:13,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:14,026 INFO L124 PetriNetUnfolderBase]: 457/909 cut-off events. [2024-06-21 21:21:14,027 INFO L125 PetriNetUnfolderBase]: For 44486/44486 co-relation queries the response was YES. [2024-06-21 21:21:14,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 909 events. 457/909 cut-off events. For 44486/44486 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5094 event pairs, 95 based on Foata normal form. 12/918 useless extension candidates. Maximal degree in co-relation 4792. Up to 641 conditions per place. [2024-06-21 21:21:14,034 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 47 changer transitions 7/205 dead transitions. [2024-06-21 21:21:14,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 205 transitions, 2131 flow [2024-06-21 21:21:14,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:14,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-21 21:21:14,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-21 21:21:14,035 INFO L175 Difference]: Start difference. First operand has 227 places, 185 transitions, 1491 flow. Second operand 11 states and 153 transitions. [2024-06-21 21:21:14,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 205 transitions, 2131 flow [2024-06-21 21:21:14,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 205 transitions, 1999 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:14,129 INFO L231 Difference]: Finished difference. Result has 228 places, 184 transitions, 1486 flow [2024-06-21 21:21:14,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1486, PETRI_PLACES=228, PETRI_TRANSITIONS=184} [2024-06-21 21:21:14,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-21 21:21:14,130 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 184 transitions, 1486 flow [2024-06-21 21:21:14,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:14,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:14,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:14,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-21 21:21:14,130 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:14,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:14,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1305569189, now seen corresponding path program 4 times [2024-06-21 21:21:14,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:14,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561939870] [2024-06-21 21:21:14,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:14,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:15,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:15,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:15,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561939870] [2024-06-21 21:21:15,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561939870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:15,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:15,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:15,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664822050] [2024-06-21 21:21:15,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:15,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:15,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:15,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:15,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:15,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:15,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 184 transitions, 1486 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:15,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:15,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:15,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:15,395 INFO L124 PetriNetUnfolderBase]: 465/933 cut-off events. [2024-06-21 21:21:15,395 INFO L125 PetriNetUnfolderBase]: For 42589/42589 co-relation queries the response was YES. [2024-06-21 21:21:15,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 933 events. 465/933 cut-off events. For 42589/42589 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5286 event pairs, 99 based on Foata normal form. 12/942 useless extension candidates. Maximal degree in co-relation 4878. Up to 665 conditions per place. [2024-06-21 21:21:15,402 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 49 changer transitions 7/204 dead transitions. [2024-06-21 21:21:15,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 204 transitions, 2122 flow [2024-06-21 21:21:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:15,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-21 21:21:15,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-21 21:21:15,403 INFO L175 Difference]: Start difference. First operand has 228 places, 184 transitions, 1486 flow. Second operand 11 states and 152 transitions. [2024-06-21 21:21:15,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 204 transitions, 2122 flow [2024-06-21 21:21:15,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 204 transitions, 2016 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:15,486 INFO L231 Difference]: Finished difference. Result has 230 places, 183 transitions, 1501 flow [2024-06-21 21:21:15,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1501, PETRI_PLACES=230, PETRI_TRANSITIONS=183} [2024-06-21 21:21:15,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-21 21:21:15,487 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 183 transitions, 1501 flow [2024-06-21 21:21:15,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:15,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:15,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:15,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-21 21:21:15,488 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:15,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:15,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1554919859, now seen corresponding path program 5 times [2024-06-21 21:21:15,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:15,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117757868] [2024-06-21 21:21:15,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:15,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:16,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:16,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:16,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117757868] [2024-06-21 21:21:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117757868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:16,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:16,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:16,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859280127] [2024-06-21 21:21:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:16,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:16,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:16,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:16,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 183 transitions, 1501 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:16,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:16,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:16,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:16,602 INFO L124 PetriNetUnfolderBase]: 473/957 cut-off events. [2024-06-21 21:21:16,602 INFO L125 PetriNetUnfolderBase]: For 45409/45409 co-relation queries the response was YES. [2024-06-21 21:21:16,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5186 conditions, 957 events. 473/957 cut-off events. For 45409/45409 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5467 event pairs, 103 based on Foata normal form. 12/966 useless extension candidates. Maximal degree in co-relation 5085. Up to 689 conditions per place. [2024-06-21 21:21:16,609 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 134 selfloop transitions, 57 changer transitions 7/202 dead transitions. [2024-06-21 21:21:16,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 202 transitions, 2115 flow [2024-06-21 21:21:16,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:16,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-21 21:21:16,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-21 21:21:16,610 INFO L175 Difference]: Start difference. First operand has 230 places, 183 transitions, 1501 flow. Second operand 11 states and 151 transitions. [2024-06-21 21:21:16,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 202 transitions, 2115 flow [2024-06-21 21:21:16,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 202 transitions, 2003 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:16,704 INFO L231 Difference]: Finished difference. Result has 232 places, 182 transitions, 1528 flow [2024-06-21 21:21:16,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1528, PETRI_PLACES=232, PETRI_TRANSITIONS=182} [2024-06-21 21:21:16,705 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 201 predicate places. [2024-06-21 21:21:16,705 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 182 transitions, 1528 flow [2024-06-21 21:21:16,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:16,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:16,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:16,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-21 21:21:16,706 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:16,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:16,706 INFO L85 PathProgramCache]: Analyzing trace with hash 536919683, now seen corresponding path program 6 times [2024-06-21 21:21:16,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:16,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588752190] [2024-06-21 21:21:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:16,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:17,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:17,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588752190] [2024-06-21 21:21:17,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588752190] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:17,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:17,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:17,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397144966] [2024-06-21 21:21:17,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:17,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:17,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:17,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:17,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:17,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:17,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 182 transitions, 1528 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:17,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:17,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:17,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:18,069 INFO L124 PetriNetUnfolderBase]: 481/982 cut-off events. [2024-06-21 21:21:18,069 INFO L125 PetriNetUnfolderBase]: For 48275/48275 co-relation queries the response was YES. [2024-06-21 21:21:18,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 982 events. 481/982 cut-off events. For 48275/48275 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5683 event pairs, 158 based on Foata normal form. 12/993 useless extension candidates. Maximal degree in co-relation 5305. Up to 854 conditions per place. [2024-06-21 21:21:18,076 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 168 selfloop transitions, 17 changer transitions 9/198 dead transitions. [2024-06-21 21:21:18,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 198 transitions, 2052 flow [2024-06-21 21:21:18,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:18,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:18,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:21:18,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:21:18,083 INFO L175 Difference]: Start difference. First operand has 232 places, 182 transitions, 1528 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:21:18,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 198 transitions, 2052 flow [2024-06-21 21:21:18,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 198 transitions, 1922 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:18,189 INFO L231 Difference]: Finished difference. Result has 234 places, 178 transitions, 1439 flow [2024-06-21 21:21:18,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1398, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1439, PETRI_PLACES=234, PETRI_TRANSITIONS=178} [2024-06-21 21:21:18,189 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-21 21:21:18,189 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 178 transitions, 1439 flow [2024-06-21 21:21:18,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:18,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:18,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:18,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-21 21:21:18,190 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:18,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:18,190 INFO L85 PathProgramCache]: Analyzing trace with hash 547961573, now seen corresponding path program 7 times [2024-06-21 21:21:18,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:18,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000662335] [2024-06-21 21:21:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:18,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:19,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:19,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000662335] [2024-06-21 21:21:19,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000662335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:19,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:19,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:19,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121635163] [2024-06-21 21:21:19,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:19,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:19,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:19,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 178 transitions, 1439 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:19,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:19,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:19,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:19,356 INFO L124 PetriNetUnfolderBase]: 461/944 cut-off events. [2024-06-21 21:21:19,357 INFO L125 PetriNetUnfolderBase]: For 34894/34894 co-relation queries the response was YES. [2024-06-21 21:21:19,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5136 conditions, 944 events. 461/944 cut-off events. For 34894/34894 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5447 event pairs, 156 based on Foata normal form. 2/945 useless extension candidates. Maximal degree in co-relation 5033. Up to 850 conditions per place. [2024-06-21 21:21:19,362 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 165 selfloop transitions, 22 changer transitions 0/191 dead transitions. [2024-06-21 21:21:19,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 191 transitions, 1871 flow [2024-06-21 21:21:19,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:21:19,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:21:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 21:21:19,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-21 21:21:19,364 INFO L175 Difference]: Start difference. First operand has 234 places, 178 transitions, 1439 flow. Second operand 12 states and 145 transitions. [2024-06-21 21:21:19,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 191 transitions, 1871 flow [2024-06-21 21:21:19,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 191 transitions, 1801 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-21 21:21:19,457 INFO L231 Difference]: Finished difference. Result has 234 places, 179 transitions, 1453 flow [2024-06-21 21:21:19,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1453, PETRI_PLACES=234, PETRI_TRANSITIONS=179} [2024-06-21 21:21:19,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-21 21:21:19,458 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 179 transitions, 1453 flow [2024-06-21 21:21:19,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:19,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:19,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:19,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-21 21:21:19,458 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:19,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:19,458 INFO L85 PathProgramCache]: Analyzing trace with hash 548347523, now seen corresponding path program 8 times [2024-06-21 21:21:19,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:19,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061016635] [2024-06-21 21:21:19,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:19,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:20,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:20,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061016635] [2024-06-21 21:21:20,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061016635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:20,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:20,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:20,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695019387] [2024-06-21 21:21:20,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:20,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:20,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:20,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:20,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:20,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 179 transitions, 1453 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:20,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:20,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:20,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:20,655 INFO L124 PetriNetUnfolderBase]: 458/939 cut-off events. [2024-06-21 21:21:20,655 INFO L125 PetriNetUnfolderBase]: For 32404/32404 co-relation queries the response was YES. [2024-06-21 21:21:20,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 939 events. 458/939 cut-off events. For 32404/32404 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5403 event pairs, 153 based on Foata normal form. 2/940 useless extension candidates. Maximal degree in co-relation 4872. Up to 831 conditions per place. [2024-06-21 21:21:20,660 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 23 changer transitions 0/193 dead transitions. [2024-06-21 21:21:20,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 193 transitions, 1893 flow [2024-06-21 21:21:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:21:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:21:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-21 21:21:20,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-21 21:21:20,662 INFO L175 Difference]: Start difference. First operand has 234 places, 179 transitions, 1453 flow. Second operand 12 states and 146 transitions. [2024-06-21 21:21:20,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 193 transitions, 1893 flow [2024-06-21 21:21:20,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 193 transitions, 1819 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:20,765 INFO L231 Difference]: Finished difference. Result has 236 places, 180 transitions, 1465 flow [2024-06-21 21:21:20,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1465, PETRI_PLACES=236, PETRI_TRANSITIONS=180} [2024-06-21 21:21:20,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-21 21:21:20,765 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 180 transitions, 1465 flow [2024-06-21 21:21:20,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:20,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:20,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:20,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-21 21:21:20,766 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:20,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:20,766 INFO L85 PathProgramCache]: Analyzing trace with hash 52499879, now seen corresponding path program 1 times [2024-06-21 21:21:20,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:20,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53043202] [2024-06-21 21:21:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:20,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:21,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:21,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:21,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53043202] [2024-06-21 21:21:21,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53043202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:21,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:21,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:21,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454432488] [2024-06-21 21:21:21,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:21,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:21,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:21,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:21,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:21,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 180 transitions, 1465 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:21,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:21,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:21,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:21,906 INFO L124 PetriNetUnfolderBase]: 469/959 cut-off events. [2024-06-21 21:21:21,907 INFO L125 PetriNetUnfolderBase]: For 35418/35418 co-relation queries the response was YES. [2024-06-21 21:21:21,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5125 conditions, 959 events. 469/959 cut-off events. For 35418/35418 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5553 event pairs, 81 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 5021. Up to 843 conditions per place. [2024-06-21 21:21:21,914 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 25 changer transitions 0/199 dead transitions. [2024-06-21 21:21:21,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 199 transitions, 2031 flow [2024-06-21 21:21:21,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:21,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:21,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 21:21:21,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 21:21:21,939 INFO L175 Difference]: Start difference. First operand has 236 places, 180 transitions, 1465 flow. Second operand 11 states and 145 transitions. [2024-06-21 21:21:21,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 199 transitions, 2031 flow [2024-06-21 21:21:22,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 199 transitions, 1957 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:22,038 INFO L231 Difference]: Finished difference. Result has 237 places, 182 transitions, 1467 flow [2024-06-21 21:21:22,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1467, PETRI_PLACES=237, PETRI_TRANSITIONS=182} [2024-06-21 21:21:22,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-21 21:21:22,048 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 182 transitions, 1467 flow [2024-06-21 21:21:22,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:22,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:22,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:22,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-21 21:21:22,048 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:22,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1641754855, now seen corresponding path program 2 times [2024-06-21 21:21:22,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:22,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301176786] [2024-06-21 21:21:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:22,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:22,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:22,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:22,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301176786] [2024-06-21 21:21:22,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301176786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:22,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:22,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:22,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136422541] [2024-06-21 21:21:22,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:22,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:22,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:22,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:22,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:22,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 182 transitions, 1467 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:22,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:22,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:22,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:23,253 INFO L124 PetriNetUnfolderBase]: 466/956 cut-off events. [2024-06-21 21:21:23,253 INFO L125 PetriNetUnfolderBase]: For 32429/32429 co-relation queries the response was YES. [2024-06-21 21:21:23,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4967 conditions, 956 events. 466/956 cut-off events. For 32429/32429 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5528 event pairs, 86 based on Foata normal form. 2/957 useless extension candidates. Maximal degree in co-relation 4862. Up to 855 conditions per place. [2024-06-21 21:21:23,259 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 169 selfloop transitions, 24 changer transitions 0/197 dead transitions. [2024-06-21 21:21:23,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 197 transitions, 1891 flow [2024-06-21 21:21:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:23,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:23,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 21:21:23,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 21:21:23,260 INFO L175 Difference]: Start difference. First operand has 237 places, 182 transitions, 1467 flow. Second operand 11 states and 142 transitions. [2024-06-21 21:21:23,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 197 transitions, 1891 flow [2024-06-21 21:21:23,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 197 transitions, 1845 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:23,362 INFO L231 Difference]: Finished difference. Result has 241 places, 182 transitions, 1473 flow [2024-06-21 21:21:23,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1473, PETRI_PLACES=241, PETRI_TRANSITIONS=182} [2024-06-21 21:21:23,362 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-21 21:21:23,362 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 182 transitions, 1473 flow [2024-06-21 21:21:23,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:23,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:23,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:23,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-21 21:21:23,363 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:23,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:23,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1960750977, now seen corresponding path program 3 times [2024-06-21 21:21:23,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:23,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352708130] [2024-06-21 21:21:23,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:23,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:24,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:24,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:24,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352708130] [2024-06-21 21:21:24,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352708130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:24,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:24,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:24,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904152507] [2024-06-21 21:21:24,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:24,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:24,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:24,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:24,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:24,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:24,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 182 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:24,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:24,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:24,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:24,548 INFO L124 PetriNetUnfolderBase]: 470/964 cut-off events. [2024-06-21 21:21:24,548 INFO L125 PetriNetUnfolderBase]: For 33488/33488 co-relation queries the response was YES. [2024-06-21 21:21:24,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 964 events. 470/964 cut-off events. For 33488/33488 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5607 event pairs, 80 based on Foata normal form. 2/965 useless extension candidates. Maximal degree in co-relation 4918. Up to 827 conditions per place. [2024-06-21 21:21:24,556 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 170 selfloop transitions, 26 changer transitions 0/200 dead transitions. [2024-06-21 21:21:24,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 200 transitions, 1919 flow [2024-06-21 21:21:24,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:24,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 21:21:24,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 21:21:24,560 INFO L175 Difference]: Start difference. First operand has 241 places, 182 transitions, 1473 flow. Second operand 11 states and 146 transitions. [2024-06-21 21:21:24,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 200 transitions, 1919 flow [2024-06-21 21:21:24,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 200 transitions, 1869 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:24,691 INFO L231 Difference]: Finished difference. Result has 242 places, 183 transitions, 1493 flow [2024-06-21 21:21:24,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1423, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1493, PETRI_PLACES=242, PETRI_TRANSITIONS=183} [2024-06-21 21:21:24,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-21 21:21:24,691 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 183 transitions, 1493 flow [2024-06-21 21:21:24,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:24,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:24,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:24,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-21 21:21:24,692 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:24,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:24,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1284793881, now seen corresponding path program 4 times [2024-06-21 21:21:24,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:24,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791764442] [2024-06-21 21:21:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:24,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:25,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:25,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:25,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791764442] [2024-06-21 21:21:25,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791764442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:25,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:25,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:25,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730389155] [2024-06-21 21:21:25,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:25,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:25,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:25,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:25,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:25,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 183 transitions, 1493 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:25,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:25,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:25,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:25,798 INFO L124 PetriNetUnfolderBase]: 474/972 cut-off events. [2024-06-21 21:21:25,798 INFO L125 PetriNetUnfolderBase]: For 34020/34020 co-relation queries the response was YES. [2024-06-21 21:21:25,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 972 events. 474/972 cut-off events. For 34020/34020 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5651 event pairs, 80 based on Foata normal form. 2/973 useless extension candidates. Maximal degree in co-relation 4991. Up to 852 conditions per place. [2024-06-21 21:21:25,807 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 21 changer transitions 0/203 dead transitions. [2024-06-21 21:21:25,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 203 transitions, 1953 flow [2024-06-21 21:21:25,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 21:21:25,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:25,808 INFO L175 Difference]: Start difference. First operand has 242 places, 183 transitions, 1493 flow. Second operand 11 states and 143 transitions. [2024-06-21 21:21:25,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 203 transitions, 1953 flow [2024-06-21 21:21:25,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 203 transitions, 1893 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:25,948 INFO L231 Difference]: Finished difference. Result has 244 places, 184 transitions, 1495 flow [2024-06-21 21:21:25,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1433, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1495, PETRI_PLACES=244, PETRI_TRANSITIONS=184} [2024-06-21 21:21:25,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-21 21:21:25,948 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 184 transitions, 1495 flow [2024-06-21 21:21:25,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:25,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:25,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:25,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-21 21:21:25,949 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:25,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:25,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1641761799, now seen corresponding path program 1 times [2024-06-21 21:21:25,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:25,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635122522] [2024-06-21 21:21:25,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:25,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:27,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635122522] [2024-06-21 21:21:27,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635122522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:27,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:27,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:27,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123789141] [2024-06-21 21:21:27,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:27,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:27,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:27,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:27,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:27,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:27,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 184 transitions, 1495 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:27,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:27,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:27,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:27,466 INFO L124 PetriNetUnfolderBase]: 477/979 cut-off events. [2024-06-21 21:21:27,466 INFO L125 PetriNetUnfolderBase]: For 34007/34007 co-relation queries the response was YES. [2024-06-21 21:21:27,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5171 conditions, 979 events. 477/979 cut-off events. For 34007/34007 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5691 event pairs, 85 based on Foata normal form. 1/979 useless extension candidates. Maximal degree in co-relation 5062. Up to 876 conditions per place. [2024-06-21 21:21:27,472 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 170 selfloop transitions, 27 changer transitions 0/201 dead transitions. [2024-06-21 21:21:27,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 201 transitions, 1995 flow [2024-06-21 21:21:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:21:27,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:21:27,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 21:21:27,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 21:21:27,474 INFO L175 Difference]: Start difference. First operand has 244 places, 184 transitions, 1495 flow. Second operand 12 states and 153 transitions. [2024-06-21 21:21:27,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 201 transitions, 1995 flow [2024-06-21 21:21:27,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 201 transitions, 1943 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:27,613 INFO L231 Difference]: Finished difference. Result has 247 places, 186 transitions, 1574 flow [2024-06-21 21:21:27,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1574, PETRI_PLACES=247, PETRI_TRANSITIONS=186} [2024-06-21 21:21:27,614 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-21 21:21:27,614 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 186 transitions, 1574 flow [2024-06-21 21:21:27,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:27,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:27,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:27,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-21 21:21:27,614 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:27,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:27,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1464642593, now seen corresponding path program 5 times [2024-06-21 21:21:27,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:27,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542591247] [2024-06-21 21:21:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:27,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:28,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542591247] [2024-06-21 21:21:28,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542591247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:28,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:28,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517746418] [2024-06-21 21:21:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:28,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:28,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:28,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:28,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:28,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 186 transitions, 1574 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:28,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:28,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:28,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:28,756 INFO L124 PetriNetUnfolderBase]: 482/992 cut-off events. [2024-06-21 21:21:28,757 INFO L125 PetriNetUnfolderBase]: For 37113/37113 co-relation queries the response was YES. [2024-06-21 21:21:28,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5265 conditions, 992 events. 482/992 cut-off events. For 37113/37113 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5833 event pairs, 106 based on Foata normal form. 2/993 useless extension candidates. Maximal degree in co-relation 5155. Up to 886 conditions per place. [2024-06-21 21:21:28,766 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 23 changer transitions 0/202 dead transitions. [2024-06-21 21:21:28,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 202 transitions, 2026 flow [2024-06-21 21:21:28,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:28,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:28,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:21:28,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:21:28,769 INFO L175 Difference]: Start difference. First operand has 247 places, 186 transitions, 1574 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:21:28,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 202 transitions, 2026 flow [2024-06-21 21:21:28,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 202 transitions, 1911 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:28,900 INFO L231 Difference]: Finished difference. Result has 248 places, 188 transitions, 1533 flow [2024-06-21 21:21:28,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1459, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1533, PETRI_PLACES=248, PETRI_TRANSITIONS=188} [2024-06-21 21:21:28,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-21 21:21:28,900 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 188 transitions, 1533 flow [2024-06-21 21:21:28,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:28,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:28,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:28,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-21 21:21:28,901 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:28,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:28,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1618655631, now seen corresponding path program 6 times [2024-06-21 21:21:28,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:28,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700152814] [2024-06-21 21:21:28,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:28,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:29,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:29,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700152814] [2024-06-21 21:21:29,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700152814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:29,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:29,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866841591] [2024-06-21 21:21:29,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:29,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:29,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:29,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 188 transitions, 1533 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:29,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:29,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:29,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:30,126 INFO L124 PetriNetUnfolderBase]: 486/1000 cut-off events. [2024-06-21 21:21:30,127 INFO L125 PetriNetUnfolderBase]: For 38266/38266 co-relation queries the response was YES. [2024-06-21 21:21:30,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 1000 events. 486/1000 cut-off events. For 38266/38266 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5889 event pairs, 106 based on Foata normal form. 2/1001 useless extension candidates. Maximal degree in co-relation 5157. Up to 880 conditions per place. [2024-06-21 21:21:30,135 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 176 selfloop transitions, 24 changer transitions 0/204 dead transitions. [2024-06-21 21:21:30,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 204 transitions, 1987 flow [2024-06-21 21:21:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:30,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 21:21:30,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:30,136 INFO L175 Difference]: Start difference. First operand has 248 places, 188 transitions, 1533 flow. Second operand 11 states and 143 transitions. [2024-06-21 21:21:30,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 204 transitions, 1987 flow [2024-06-21 21:21:30,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 204 transitions, 1938 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:30,284 INFO L231 Difference]: Finished difference. Result has 252 places, 189 transitions, 1556 flow [2024-06-21 21:21:30,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1556, PETRI_PLACES=252, PETRI_TRANSITIONS=189} [2024-06-21 21:21:30,285 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-21 21:21:30,285 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 189 transitions, 1556 flow [2024-06-21 21:21:30,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:30,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:30,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:30,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-21 21:21:30,285 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:30,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2063673877, now seen corresponding path program 7 times [2024-06-21 21:21:30,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:30,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008852568] [2024-06-21 21:21:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:30,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:30,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:30,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:30,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008852568] [2024-06-21 21:21:30,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008852568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:30,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:30,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:30,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925149104] [2024-06-21 21:21:30,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:30,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:30,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:30,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:30,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:31,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:31,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 189 transitions, 1556 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:31,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:31,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:31,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:31,289 INFO L124 PetriNetUnfolderBase]: 497/1021 cut-off events. [2024-06-21 21:21:31,289 INFO L125 PetriNetUnfolderBase]: For 43564/43564 co-relation queries the response was YES. [2024-06-21 21:21:31,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5540 conditions, 1021 events. 497/1021 cut-off events. For 43564/43564 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6028 event pairs, 109 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 5428. Up to 860 conditions per place. [2024-06-21 21:21:31,298 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 26 changer transitions 0/208 dead transitions. [2024-06-21 21:21:31,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 208 transitions, 2172 flow [2024-06-21 21:21:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:31,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:31,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 21:21:31,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 21:21:31,299 INFO L175 Difference]: Start difference. First operand has 252 places, 189 transitions, 1556 flow. Second operand 11 states and 145 transitions. [2024-06-21 21:21:31,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 208 transitions, 2172 flow [2024-06-21 21:21:31,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 208 transitions, 2110 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:31,441 INFO L231 Difference]: Finished difference. Result has 254 places, 191 transitions, 1592 flow [2024-06-21 21:21:31,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1592, PETRI_PLACES=254, PETRI_TRANSITIONS=191} [2024-06-21 21:21:31,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-21 21:21:31,442 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 191 transitions, 1592 flow [2024-06-21 21:21:31,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:31,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:31,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:31,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-21 21:21:31,443 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:31,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:31,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1327089177, now seen corresponding path program 8 times [2024-06-21 21:21:31,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:31,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204584672] [2024-06-21 21:21:31,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:31,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:32,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:32,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:32,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204584672] [2024-06-21 21:21:32,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204584672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:32,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:32,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:32,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241128156] [2024-06-21 21:21:32,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:32,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:32,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:32,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:32,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:32,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:32,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 191 transitions, 1592 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:32,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:32,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:32,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:32,562 INFO L124 PetriNetUnfolderBase]: 502/1032 cut-off events. [2024-06-21 21:21:32,562 INFO L125 PetriNetUnfolderBase]: For 44835/44835 co-relation queries the response was YES. [2024-06-21 21:21:32,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5620 conditions, 1032 events. 502/1032 cut-off events. For 44835/44835 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6124 event pairs, 113 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 5507. Up to 925 conditions per place. [2024-06-21 21:21:32,570 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 25 changer transitions 0/207 dead transitions. [2024-06-21 21:21:32,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 207 transitions, 2063 flow [2024-06-21 21:21:32,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:32,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:32,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:21:32,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:21:32,571 INFO L175 Difference]: Start difference. First operand has 254 places, 191 transitions, 1592 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:21:32,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 207 transitions, 2063 flow [2024-06-21 21:21:32,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 207 transitions, 2006 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:32,727 INFO L231 Difference]: Finished difference. Result has 258 places, 193 transitions, 1622 flow [2024-06-21 21:21:32,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1622, PETRI_PLACES=258, PETRI_TRANSITIONS=193} [2024-06-21 21:21:32,727 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-21 21:21:32,727 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 193 transitions, 1622 flow [2024-06-21 21:21:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:32,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:32,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:32,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-21 21:21:32,728 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:32,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 66453735, now seen corresponding path program 9 times [2024-06-21 21:21:32,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:32,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138117124] [2024-06-21 21:21:32,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:32,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:33,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:33,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138117124] [2024-06-21 21:21:33,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138117124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:33,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:33,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:33,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821310206] [2024-06-21 21:21:33,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:33,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:33,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:33,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:33,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:33,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 193 transitions, 1622 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:33,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:33,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:33,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:33,874 INFO L124 PetriNetUnfolderBase]: 506/1040 cut-off events. [2024-06-21 21:21:33,874 INFO L125 PetriNetUnfolderBase]: For 45783/45783 co-relation queries the response was YES. [2024-06-21 21:21:33,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5675 conditions, 1040 events. 506/1040 cut-off events. For 45783/45783 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6165 event pairs, 115 based on Foata normal form. 2/1041 useless extension candidates. Maximal degree in co-relation 5560. Up to 933 conditions per place. [2024-06-21 21:21:33,881 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 180 selfloop transitions, 24 changer transitions 0/208 dead transitions. [2024-06-21 21:21:33,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 208 transitions, 2084 flow [2024-06-21 21:21:33,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:33,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:33,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:21:33,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:21:33,882 INFO L175 Difference]: Start difference. First operand has 258 places, 193 transitions, 1622 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:21:33,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 208 transitions, 2084 flow [2024-06-21 21:21:34,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 208 transitions, 2024 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-21 21:21:34,038 INFO L231 Difference]: Finished difference. Result has 261 places, 194 transitions, 1636 flow [2024-06-21 21:21:34,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1636, PETRI_PLACES=261, PETRI_TRANSITIONS=194} [2024-06-21 21:21:34,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-21 21:21:34,039 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 194 transitions, 1636 flow [2024-06-21 21:21:34,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:34,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:34,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:34,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-21 21:21:34,040 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:34,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:34,040 INFO L85 PathProgramCache]: Analyzing trace with hash 66276105, now seen corresponding path program 10 times [2024-06-21 21:21:34,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:34,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231453185] [2024-06-21 21:21:34,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:34,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:34,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:34,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231453185] [2024-06-21 21:21:34,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231453185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:34,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:34,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:34,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426379221] [2024-06-21 21:21:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:34,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:34,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:34,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:34,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 194 transitions, 1636 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:34,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:34,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:34,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:35,207 INFO L124 PetriNetUnfolderBase]: 503/1035 cut-off events. [2024-06-21 21:21:35,207 INFO L125 PetriNetUnfolderBase]: For 42336/42336 co-relation queries the response was YES. [2024-06-21 21:21:35,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5511 conditions, 1035 events. 503/1035 cut-off events. For 42336/42336 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6157 event pairs, 112 based on Foata normal form. 2/1036 useless extension candidates. Maximal degree in co-relation 5395. Up to 908 conditions per place. [2024-06-21 21:21:35,216 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 179 selfloop transitions, 26 changer transitions 0/209 dead transitions. [2024-06-21 21:21:35,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 209 transitions, 2082 flow [2024-06-21 21:21:35,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:35,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 21:21:35,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:35,217 INFO L175 Difference]: Start difference. First operand has 261 places, 194 transitions, 1636 flow. Second operand 11 states and 143 transitions. [2024-06-21 21:21:35,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 209 transitions, 2082 flow [2024-06-21 21:21:35,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 209 transitions, 1997 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:35,368 INFO L231 Difference]: Finished difference. Result has 262 places, 194 transitions, 1607 flow [2024-06-21 21:21:35,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1607, PETRI_PLACES=262, PETRI_TRANSITIONS=194} [2024-06-21 21:21:35,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-21 21:21:35,369 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 194 transitions, 1607 flow [2024-06-21 21:21:35,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:35,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:35,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:35,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-21 21:21:35,370 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:35,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:35,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1318511353, now seen corresponding path program 2 times [2024-06-21 21:21:35,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:35,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61590600] [2024-06-21 21:21:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:35,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:36,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:36,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:36,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61590600] [2024-06-21 21:21:36,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61590600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:36,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:36,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:36,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207907058] [2024-06-21 21:21:36,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:36,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:36,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:36,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:36,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:36,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:36,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 194 transitions, 1607 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:36,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:36,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:36,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:36,534 INFO L124 PetriNetUnfolderBase]: 506/1039 cut-off events. [2024-06-21 21:21:36,534 INFO L125 PetriNetUnfolderBase]: For 41377/41377 co-relation queries the response was YES. [2024-06-21 21:21:36,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5556 conditions, 1039 events. 506/1039 cut-off events. For 41377/41377 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6175 event pairs, 95 based on Foata normal form. 1/1039 useless extension candidates. Maximal degree in co-relation 5439. Up to 884 conditions per place. [2024-06-21 21:21:36,543 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 154 selfloop transitions, 53 changer transitions 0/211 dead transitions. [2024-06-21 21:21:36,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 211 transitions, 2133 flow [2024-06-21 21:21:36,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:21:36,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:21:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 21:21:36,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:36,544 INFO L175 Difference]: Start difference. First operand has 262 places, 194 transitions, 1607 flow. Second operand 12 states and 156 transitions. [2024-06-21 21:21:36,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 211 transitions, 2133 flow [2024-06-21 21:21:36,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 211 transitions, 2063 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:36,701 INFO L231 Difference]: Finished difference. Result has 265 places, 197 transitions, 1740 flow [2024-06-21 21:21:36,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1740, PETRI_PLACES=265, PETRI_TRANSITIONS=197} [2024-06-21 21:21:36,702 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-21 21:21:36,702 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 197 transitions, 1740 flow [2024-06-21 21:21:36,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:36,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:36,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:36,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-21 21:21:36,702 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:36,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:36,703 INFO L85 PathProgramCache]: Analyzing trace with hash -182129463, now seen corresponding path program 11 times [2024-06-21 21:21:36,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:36,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228195327] [2024-06-21 21:21:36,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:36,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:37,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:37,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:37,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228195327] [2024-06-21 21:21:37,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228195327] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:37,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:37,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:37,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100192028] [2024-06-21 21:21:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:37,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:37,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:37,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:37,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 197 transitions, 1740 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:37,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:37,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:37,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:37,802 INFO L124 PetriNetUnfolderBase]: 510/1048 cut-off events. [2024-06-21 21:21:37,802 INFO L125 PetriNetUnfolderBase]: For 45343/45343 co-relation queries the response was YES. [2024-06-21 21:21:37,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5700 conditions, 1048 events. 510/1048 cut-off events. For 45343/45343 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6243 event pairs, 101 based on Foata normal form. 2/1049 useless extension candidates. Maximal degree in co-relation 5581. Up to 924 conditions per place. [2024-06-21 21:21:37,810 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 22 changer transitions 0/218 dead transitions. [2024-06-21 21:21:37,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 218 transitions, 2240 flow [2024-06-21 21:21:37,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:37,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:37,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 21:21:37,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:37,812 INFO L175 Difference]: Start difference. First operand has 265 places, 197 transitions, 1740 flow. Second operand 11 states and 143 transitions. [2024-06-21 21:21:37,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 218 transitions, 2240 flow [2024-06-21 21:21:37,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 218 transitions, 2084 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-21 21:21:37,972 INFO L231 Difference]: Finished difference. Result has 268 places, 198 transitions, 1656 flow [2024-06-21 21:21:37,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1656, PETRI_PLACES=268, PETRI_TRANSITIONS=198} [2024-06-21 21:21:37,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-21 21:21:37,973 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 198 transitions, 1656 flow [2024-06-21 21:21:37,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:37,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:37,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:37,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-21 21:21:37,973 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:37,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:37,974 INFO L85 PathProgramCache]: Analyzing trace with hash 691889455, now seen corresponding path program 12 times [2024-06-21 21:21:37,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:37,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178396439] [2024-06-21 21:21:37,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:37,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:38,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:38,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:38,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178396439] [2024-06-21 21:21:38,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178396439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:38,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:38,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:38,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952317569] [2024-06-21 21:21:38,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:38,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:38,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:38,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:38,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:38,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:38,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 198 transitions, 1656 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:38,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:38,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:38,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:39,256 INFO L124 PetriNetUnfolderBase]: 521/1069 cut-off events. [2024-06-21 21:21:39,256 INFO L125 PetriNetUnfolderBase]: For 50945/50945 co-relation queries the response was YES. [2024-06-21 21:21:39,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5909 conditions, 1069 events. 521/1069 cut-off events. For 50945/50945 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6365 event pairs, 106 based on Foata normal form. 2/1070 useless extension candidates. Maximal degree in co-relation 5789. Up to 929 conditions per place. [2024-06-21 21:21:39,266 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 26 changer transitions 0/219 dead transitions. [2024-06-21 21:21:39,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 219 transitions, 2320 flow [2024-06-21 21:21:39,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:39,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:39,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 21:21:39,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 21:21:39,267 INFO L175 Difference]: Start difference. First operand has 268 places, 198 transitions, 1656 flow. Second operand 11 states and 147 transitions. [2024-06-21 21:21:39,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 219 transitions, 2320 flow [2024-06-21 21:21:39,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 219 transitions, 2258 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:39,448 INFO L231 Difference]: Finished difference. Result has 270 places, 200 transitions, 1700 flow [2024-06-21 21:21:39,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1700, PETRI_PLACES=270, PETRI_TRANSITIONS=200} [2024-06-21 21:21:39,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-06-21 21:21:39,449 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 200 transitions, 1700 flow [2024-06-21 21:21:39,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:39,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:39,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:39,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-21 21:21:39,450 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:39,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:39,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1726974229, now seen corresponding path program 13 times [2024-06-21 21:21:39,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:39,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736558099] [2024-06-21 21:21:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:39,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:40,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:40,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:40,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736558099] [2024-06-21 21:21:40,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736558099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:40,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:40,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:40,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761378370] [2024-06-21 21:21:40,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:40,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:40,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:40,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:40,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:40,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:40,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 200 transitions, 1700 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:40,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:40,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:40,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:40,731 INFO L124 PetriNetUnfolderBase]: 525/1077 cut-off events. [2024-06-21 21:21:40,731 INFO L125 PetriNetUnfolderBase]: For 52391/52391 co-relation queries the response was YES. [2024-06-21 21:21:40,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5973 conditions, 1077 events. 525/1077 cut-off events. For 52391/52391 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6441 event pairs, 113 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5852. Up to 955 conditions per place. [2024-06-21 21:21:40,738 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 26 changer transitions 0/219 dead transitions. [2024-06-21 21:21:40,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 219 transitions, 2342 flow [2024-06-21 21:21:40,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:40,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 21:21:40,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 21:21:40,740 INFO L175 Difference]: Start difference. First operand has 270 places, 200 transitions, 1700 flow. Second operand 11 states and 145 transitions. [2024-06-21 21:21:40,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 219 transitions, 2342 flow [2024-06-21 21:21:40,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 219 transitions, 2276 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:40,947 INFO L231 Difference]: Finished difference. Result has 274 places, 201 transitions, 1716 flow [2024-06-21 21:21:40,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1640, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1716, PETRI_PLACES=274, PETRI_TRANSITIONS=201} [2024-06-21 21:21:40,948 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-21 21:21:40,948 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 201 transitions, 1716 flow [2024-06-21 21:21:40,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:40,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:40,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:40,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-21 21:21:40,948 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:40,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:40,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1726796599, now seen corresponding path program 14 times [2024-06-21 21:21:40,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:40,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876314579] [2024-06-21 21:21:40,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:40,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:41,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:41,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876314579] [2024-06-21 21:21:41,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876314579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:41,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:41,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:41,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703857219] [2024-06-21 21:21:41,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:41,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:41,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:41,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:41,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:41,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:41,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 201 transitions, 1716 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:41,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:41,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:41,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:41,958 INFO L124 PetriNetUnfolderBase]: 522/1072 cut-off events. [2024-06-21 21:21:41,958 INFO L125 PetriNetUnfolderBase]: For 48016/48016 co-relation queries the response was YES. [2024-06-21 21:21:41,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5787 conditions, 1072 events. 522/1072 cut-off events. For 48016/48016 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6397 event pairs, 117 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 5664. Up to 967 conditions per place. [2024-06-21 21:21:41,968 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 25 changer transitions 0/217 dead transitions. [2024-06-21 21:21:41,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 217 transitions, 2182 flow [2024-06-21 21:21:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-21 21:21:41,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-21 21:21:41,969 INFO L175 Difference]: Start difference. First operand has 274 places, 201 transitions, 1716 flow. Second operand 11 states and 142 transitions. [2024-06-21 21:21:41,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 217 transitions, 2182 flow [2024-06-21 21:21:42,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 217 transitions, 2098 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:42,144 INFO L231 Difference]: Finished difference. Result has 276 places, 201 transitions, 1686 flow [2024-06-21 21:21:42,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1686, PETRI_PLACES=276, PETRI_TRANSITIONS=201} [2024-06-21 21:21:42,145 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-21 21:21:42,145 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 201 transitions, 1686 flow [2024-06-21 21:21:42,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:42,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:42,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:42,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-21 21:21:42,145 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:42,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:42,146 INFO L85 PathProgramCache]: Analyzing trace with hash -710035443, now seen corresponding path program 15 times [2024-06-21 21:21:42,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:42,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306582881] [2024-06-21 21:21:42,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:42,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:42,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:42,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:42,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306582881] [2024-06-21 21:21:42,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306582881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:42,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:42,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:42,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085404933] [2024-06-21 21:21:42,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:42,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:42,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:42,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:42,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:43,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:43,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 201 transitions, 1686 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:43,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:43,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:43,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:43,342 INFO L124 PetriNetUnfolderBase]: 526/1080 cut-off events. [2024-06-21 21:21:43,343 INFO L125 PetriNetUnfolderBase]: For 48928/48928 co-relation queries the response was YES. [2024-06-21 21:21:43,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5801 conditions, 1080 events. 526/1080 cut-off events. For 48928/48928 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6452 event pairs, 77 based on Foata normal form. 2/1081 useless extension candidates. Maximal degree in co-relation 5677. Up to 921 conditions per place. [2024-06-21 21:21:43,352 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 25 changer transitions 0/222 dead transitions. [2024-06-21 21:21:43,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 222 transitions, 2196 flow [2024-06-21 21:21:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:21:43,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:21:43,353 INFO L175 Difference]: Start difference. First operand has 276 places, 201 transitions, 1686 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:21:43,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 222 transitions, 2196 flow [2024-06-21 21:21:43,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 222 transitions, 2144 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:43,539 INFO L231 Difference]: Finished difference. Result has 277 places, 202 transitions, 1716 flow [2024-06-21 21:21:43,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1716, PETRI_PLACES=277, PETRI_TRANSITIONS=202} [2024-06-21 21:21:43,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-21 21:21:43,539 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 202 transitions, 1716 flow [2024-06-21 21:21:43,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:43,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:43,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-21 21:21:43,540 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:43,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1014806153, now seen corresponding path program 16 times [2024-06-21 21:21:43,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:43,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441551462] [2024-06-21 21:21:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:43,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:44,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:44,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441551462] [2024-06-21 21:21:44,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441551462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:44,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:44,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:44,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366851374] [2024-06-21 21:21:44,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:44,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:44,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:44,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:44,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:44,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:44,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 202 transitions, 1716 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:44,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:44,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:44,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:44,833 INFO L124 PetriNetUnfolderBase]: 530/1088 cut-off events. [2024-06-21 21:21:44,833 INFO L125 PetriNetUnfolderBase]: For 50530/50530 co-relation queries the response was YES. [2024-06-21 21:21:44,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 1088 events. 530/1088 cut-off events. For 50530/50530 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6537 event pairs, 119 based on Foata normal form. 2/1089 useless extension candidates. Maximal degree in co-relation 5779. Up to 953 conditions per place. [2024-06-21 21:21:44,843 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 175 selfloop transitions, 38 changer transitions 0/217 dead transitions. [2024-06-21 21:21:44,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 217 transitions, 2204 flow [2024-06-21 21:21:44,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:44,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:21:44,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:44,844 INFO L175 Difference]: Start difference. First operand has 277 places, 202 transitions, 1716 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:21:44,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 217 transitions, 2204 flow [2024-06-21 21:21:45,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 217 transitions, 2132 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:45,046 INFO L231 Difference]: Finished difference. Result has 278 places, 203 transitions, 1758 flow [2024-06-21 21:21:45,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1758, PETRI_PLACES=278, PETRI_TRANSITIONS=203} [2024-06-21 21:21:45,047 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-21 21:21:45,047 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 203 transitions, 1758 flow [2024-06-21 21:21:45,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:45,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:45,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:45,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-21 21:21:45,047 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:45,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:45,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1880368649, now seen corresponding path program 17 times [2024-06-21 21:21:45,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:45,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902600565] [2024-06-21 21:21:45,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:45,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:45,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:45,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902600565] [2024-06-21 21:21:45,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902600565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:45,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:45,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:45,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743664257] [2024-06-21 21:21:45,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:45,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:45,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:45,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:45,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:45,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:45,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 203 transitions, 1758 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:45,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:45,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:45,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:46,289 INFO L124 PetriNetUnfolderBase]: 534/1096 cut-off events. [2024-06-21 21:21:46,289 INFO L125 PetriNetUnfolderBase]: For 51683/51683 co-relation queries the response was YES. [2024-06-21 21:21:46,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 1096 events. 534/1096 cut-off events. For 51683/51683 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6589 event pairs, 112 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 5856. Up to 919 conditions per place. [2024-06-21 21:21:46,301 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 174 selfloop transitions, 41 changer transitions 0/219 dead transitions. [2024-06-21 21:21:46,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 219 transitions, 2254 flow [2024-06-21 21:21:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 21:21:46,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:21:46,302 INFO L175 Difference]: Start difference. First operand has 278 places, 203 transitions, 1758 flow. Second operand 10 states and 132 transitions. [2024-06-21 21:21:46,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 219 transitions, 2254 flow [2024-06-21 21:21:46,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 219 transitions, 2154 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:46,489 INFO L231 Difference]: Finished difference. Result has 278 places, 204 transitions, 1780 flow [2024-06-21 21:21:46,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1658, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1780, PETRI_PLACES=278, PETRI_TRANSITIONS=204} [2024-06-21 21:21:46,489 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-21 21:21:46,489 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 204 transitions, 1780 flow [2024-06-21 21:21:46,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:46,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:46,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:46,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-21 21:21:46,490 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:46,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:46,490 INFO L85 PathProgramCache]: Analyzing trace with hash -724399147, now seen corresponding path program 18 times [2024-06-21 21:21:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:46,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404997847] [2024-06-21 21:21:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:46,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:47,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:47,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404997847] [2024-06-21 21:21:47,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404997847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:47,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:47,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:47,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378237221] [2024-06-21 21:21:47,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:47,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:47,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:47,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:47,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:47,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:47,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 204 transitions, 1780 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:47,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:47,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:47,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:47,765 INFO L124 PetriNetUnfolderBase]: 538/1104 cut-off events. [2024-06-21 21:21:47,765 INFO L125 PetriNetUnfolderBase]: For 50897/50897 co-relation queries the response was YES. [2024-06-21 21:21:47,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6034 conditions, 1104 events. 538/1104 cut-off events. For 50897/50897 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6668 event pairs, 101 based on Foata normal form. 2/1105 useless extension candidates. Maximal degree in co-relation 5909. Up to 861 conditions per place. [2024-06-21 21:21:47,776 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 173 selfloop transitions, 44 changer transitions 0/221 dead transitions. [2024-06-21 21:21:47,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 221 transitions, 2284 flow [2024-06-21 21:21:47,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:47,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:47,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 21:21:47,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 21:21:47,777 INFO L175 Difference]: Start difference. First operand has 278 places, 204 transitions, 1780 flow. Second operand 10 states and 134 transitions. [2024-06-21 21:21:47,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 221 transitions, 2284 flow [2024-06-21 21:21:47,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 221 transitions, 2176 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:47,987 INFO L231 Difference]: Finished difference. Result has 278 places, 205 transitions, 1802 flow [2024-06-21 21:21:47,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1672, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1802, PETRI_PLACES=278, PETRI_TRANSITIONS=205} [2024-06-21 21:21:47,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 247 predicate places. [2024-06-21 21:21:47,993 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 205 transitions, 1802 flow [2024-06-21 21:21:47,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:47,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:47,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:47,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-21 21:21:47,994 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:47,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:47,994 INFO L85 PathProgramCache]: Analyzing trace with hash -782491597, now seen corresponding path program 19 times [2024-06-21 21:21:47,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:47,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615050174] [2024-06-21 21:21:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:47,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:48,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:48,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:48,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615050174] [2024-06-21 21:21:48,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615050174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:48,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:48,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:48,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847633580] [2024-06-21 21:21:48,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:48,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:48,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:48,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:48,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:48,767 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 205 transitions, 1802 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:48,767 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:48,767 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:48,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:49,093 INFO L124 PetriNetUnfolderBase]: 542/1112 cut-off events. [2024-06-21 21:21:49,093 INFO L125 PetriNetUnfolderBase]: For 49922/49922 co-relation queries the response was YES. [2024-06-21 21:21:49,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6092 conditions, 1112 events. 542/1112 cut-off events. For 49922/49922 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6703 event pairs, 81 based on Foata normal form. 2/1113 useless extension candidates. Maximal degree in co-relation 5968. Up to 881 conditions per place. [2024-06-21 21:21:49,101 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 186 selfloop transitions, 33 changer transitions 0/223 dead transitions. [2024-06-21 21:21:49,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 223 transitions, 2314 flow [2024-06-21 21:21:49,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:49,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:49,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-21 21:21:49,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-21 21:21:49,102 INFO L175 Difference]: Start difference. First operand has 278 places, 205 transitions, 1802 flow. Second operand 10 states and 129 transitions. [2024-06-21 21:21:49,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 223 transitions, 2314 flow [2024-06-21 21:21:49,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 223 transitions, 2196 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:49,290 INFO L231 Difference]: Finished difference. Result has 279 places, 206 transitions, 1796 flow [2024-06-21 21:21:49,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1686, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1796, PETRI_PLACES=279, PETRI_TRANSITIONS=206} [2024-06-21 21:21:49,293 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-21 21:21:49,293 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 206 transitions, 1796 flow [2024-06-21 21:21:49,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:49,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:49,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:49,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-21 21:21:49,293 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:49,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:49,294 INFO L85 PathProgramCache]: Analyzing trace with hash -824786893, now seen corresponding path program 20 times [2024-06-21 21:21:49,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:49,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491044976] [2024-06-21 21:21:49,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:49,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:50,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:50,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491044976] [2024-06-21 21:21:50,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491044976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:50,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:50,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:50,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222776114] [2024-06-21 21:21:50,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:50,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:50,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:50,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:50,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:50,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:50,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 206 transitions, 1796 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:50,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:50,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:50,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:50,497 INFO L124 PetriNetUnfolderBase]: 549/1127 cut-off events. [2024-06-21 21:21:50,497 INFO L125 PetriNetUnfolderBase]: For 48992/48992 co-relation queries the response was YES. [2024-06-21 21:21:50,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6131 conditions, 1127 events. 549/1127 cut-off events. For 48992/48992 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6834 event pairs, 132 based on Foata normal form. 2/1128 useless extension candidates. Maximal degree in co-relation 6007. Up to 986 conditions per place. [2024-06-21 21:21:50,507 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 180 selfloop transitions, 37 changer transitions 1/222 dead transitions. [2024-06-21 21:21:50,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 222 transitions, 2341 flow [2024-06-21 21:21:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:50,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:50,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:21:50,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:50,508 INFO L175 Difference]: Start difference. First operand has 279 places, 206 transitions, 1796 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:21:50,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 222 transitions, 2341 flow [2024-06-21 21:21:50,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 222 transitions, 2241 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-21 21:21:50,696 INFO L231 Difference]: Finished difference. Result has 282 places, 209 transitions, 1867 flow [2024-06-21 21:21:50,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1867, PETRI_PLACES=282, PETRI_TRANSITIONS=209} [2024-06-21 21:21:50,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-21 21:21:50,697 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 209 transitions, 1867 flow [2024-06-21 21:21:50,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:50,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:50,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:50,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-21 21:21:50,697 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:50,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:50,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1259534037, now seen corresponding path program 21 times [2024-06-21 21:21:50,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:50,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169071651] [2024-06-21 21:21:50,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:50,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:50,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:51,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:51,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169071651] [2024-06-21 21:21:51,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169071651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:51,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:51,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:51,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821529087] [2024-06-21 21:21:51,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:51,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:51,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:51,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:51,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:51,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:51,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 209 transitions, 1867 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:51,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:51,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:51,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:51,833 INFO L124 PetriNetUnfolderBase]: 554/1136 cut-off events. [2024-06-21 21:21:51,833 INFO L125 PetriNetUnfolderBase]: For 46796/46796 co-relation queries the response was YES. [2024-06-21 21:21:51,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6158 conditions, 1136 events. 554/1136 cut-off events. For 46796/46796 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6897 event pairs, 132 based on Foata normal form. 2/1137 useless extension candidates. Maximal degree in co-relation 6032. Up to 996 conditions per place. [2024-06-21 21:21:51,844 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 183 selfloop transitions, 36 changer transitions 1/224 dead transitions. [2024-06-21 21:21:51,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 224 transitions, 2384 flow [2024-06-21 21:21:51,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:21:51,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:51,847 INFO L175 Difference]: Start difference. First operand has 282 places, 209 transitions, 1867 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:21:51,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 224 transitions, 2384 flow [2024-06-21 21:21:52,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 224 transitions, 2271 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:52,053 INFO L231 Difference]: Finished difference. Result has 285 places, 211 transitions, 1874 flow [2024-06-21 21:21:52,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1756, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1874, PETRI_PLACES=285, PETRI_TRANSITIONS=211} [2024-06-21 21:21:52,053 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-21 21:21:52,053 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 211 transitions, 1874 flow [2024-06-21 21:21:52,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:52,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:52,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:52,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-21 21:21:52,054 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:52,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:52,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1358891059, now seen corresponding path program 22 times [2024-06-21 21:21:52,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:52,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628072553] [2024-06-21 21:21:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:52,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:52,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:52,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628072553] [2024-06-21 21:21:52,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628072553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:52,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:52,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:52,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510181897] [2024-06-21 21:21:52,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:52,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:52,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:52,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:52,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:52,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:52,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 211 transitions, 1874 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:52,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:52,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:52,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:53,394 INFO L124 PetriNetUnfolderBase]: 556/1142 cut-off events. [2024-06-21 21:21:53,394 INFO L125 PetriNetUnfolderBase]: For 46688/46688 co-relation queries the response was YES. [2024-06-21 21:21:53,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6168 conditions, 1142 events. 556/1142 cut-off events. For 46688/46688 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6944 event pairs, 134 based on Foata normal form. 2/1143 useless extension candidates. Maximal degree in co-relation 6042. Up to 1002 conditions per place. [2024-06-21 21:21:53,405 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 36 changer transitions 1/225 dead transitions. [2024-06-21 21:21:53,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 225 transitions, 2387 flow [2024-06-21 21:21:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:53,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:53,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:21:53,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:21:53,406 INFO L175 Difference]: Start difference. First operand has 285 places, 211 transitions, 1874 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:21:53,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 225 transitions, 2387 flow [2024-06-21 21:21:53,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 225 transitions, 2306 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-21 21:21:53,607 INFO L231 Difference]: Finished difference. Result has 288 places, 212 transitions, 1906 flow [2024-06-21 21:21:53,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1906, PETRI_PLACES=288, PETRI_TRANSITIONS=212} [2024-06-21 21:21:53,607 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 257 predicate places. [2024-06-21 21:21:53,607 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 212 transitions, 1906 flow [2024-06-21 21:21:53,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:53,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:53,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:53,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-21 21:21:53,608 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:53,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:53,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1088826957, now seen corresponding path program 23 times [2024-06-21 21:21:53,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:53,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273814812] [2024-06-21 21:21:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:53,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:54,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:54,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273814812] [2024-06-21 21:21:54,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273814812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:54,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:54,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:54,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035659509] [2024-06-21 21:21:54,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:54,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:54,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:54,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:54,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:54,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 212 transitions, 1906 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:54,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:54,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:54,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:54,824 INFO L124 PetriNetUnfolderBase]: 558/1150 cut-off events. [2024-06-21 21:21:54,824 INFO L125 PetriNetUnfolderBase]: For 46844/46844 co-relation queries the response was YES. [2024-06-21 21:21:54,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6210 conditions, 1150 events. 558/1150 cut-off events. For 46844/46844 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7054 event pairs, 132 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 6084. Up to 980 conditions per place. [2024-06-21 21:21:54,834 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 38 changer transitions 0/226 dead transitions. [2024-06-21 21:21:54,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 226 transitions, 2414 flow [2024-06-21 21:21:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:54,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:54,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 21:21:54,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 21:21:54,835 INFO L175 Difference]: Start difference. First operand has 288 places, 212 transitions, 1906 flow. Second operand 10 states and 131 transitions. [2024-06-21 21:21:54,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 226 transitions, 2414 flow [2024-06-21 21:21:55,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 226 transitions, 2328 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-21 21:21:55,043 INFO L231 Difference]: Finished difference. Result has 292 places, 213 transitions, 1938 flow [2024-06-21 21:21:55,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1822, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1938, PETRI_PLACES=292, PETRI_TRANSITIONS=213} [2024-06-21 21:21:55,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-21 21:21:55,044 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 213 transitions, 1938 flow [2024-06-21 21:21:55,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:55,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:55,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:55,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-21 21:21:55,044 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:55,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:55,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1088711637, now seen corresponding path program 24 times [2024-06-21 21:21:55,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:55,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289450981] [2024-06-21 21:21:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:55,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:55,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289450981] [2024-06-21 21:21:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289450981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:55,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:55,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301277854] [2024-06-21 21:21:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:55,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:55,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:55,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 213 transitions, 1938 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:55,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:55,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:55,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:56,266 INFO L124 PetriNetUnfolderBase]: 569/1171 cut-off events. [2024-06-21 21:21:56,266 INFO L125 PetriNetUnfolderBase]: For 52358/52358 co-relation queries the response was YES. [2024-06-21 21:21:56,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6529 conditions, 1171 events. 569/1171 cut-off events. For 52358/52358 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7217 event pairs, 131 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 6402. Up to 902 conditions per place. [2024-06-21 21:21:56,277 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 180 selfloop transitions, 46 changer transitions 0/230 dead transitions. [2024-06-21 21:21:56,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 230 transitions, 2632 flow [2024-06-21 21:21:56,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:56,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:56,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 21:21:56,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 21:21:56,279 INFO L175 Difference]: Start difference. First operand has 292 places, 213 transitions, 1938 flow. Second operand 10 states and 133 transitions. [2024-06-21 21:21:56,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 230 transitions, 2632 flow [2024-06-21 21:21:56,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 230 transitions, 2520 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-21 21:21:56,474 INFO L231 Difference]: Finished difference. Result has 293 places, 215 transitions, 1996 flow [2024-06-21 21:21:56,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1996, PETRI_PLACES=293, PETRI_TRANSITIONS=215} [2024-06-21 21:21:56,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-21 21:21:56,474 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 215 transitions, 1996 flow [2024-06-21 21:21:56,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:56,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:56,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:56,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-21 21:21:56,475 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:56,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:56,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1052865673, now seen corresponding path program 25 times [2024-06-21 21:21:56,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:56,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297167473] [2024-06-21 21:21:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:56,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:57,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:57,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297167473] [2024-06-21 21:21:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297167473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:57,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:57,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:21:57,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463979264] [2024-06-21 21:21:57,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:57,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:21:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:57,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:21:57,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:21:57,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:57,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 215 transitions, 1996 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:57,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:57,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:57,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:57,680 INFO L124 PetriNetUnfolderBase]: 566/1166 cut-off events. [2024-06-21 21:21:57,680 INFO L125 PetriNetUnfolderBase]: For 47072/47072 co-relation queries the response was YES. [2024-06-21 21:21:57,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6331 conditions, 1166 events. 566/1166 cut-off events. For 47072/47072 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7182 event pairs, 134 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 6204. Up to 984 conditions per place. [2024-06-21 21:21:57,691 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 40 changer transitions 0/228 dead transitions. [2024-06-21 21:21:57,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 228 transitions, 2474 flow [2024-06-21 21:21:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:21:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:21:57,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-21 21:21:57,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-21 21:21:57,693 INFO L175 Difference]: Start difference. First operand has 293 places, 215 transitions, 1996 flow. Second operand 10 states and 131 transitions. [2024-06-21 21:21:57,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 228 transitions, 2474 flow [2024-06-21 21:21:57,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 228 transitions, 2371 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 21:21:57,921 INFO L231 Difference]: Finished difference. Result has 295 places, 215 transitions, 1979 flow [2024-06-21 21:21:57,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1979, PETRI_PLACES=295, PETRI_TRANSITIONS=215} [2024-06-21 21:21:57,922 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-21 21:21:57,922 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 215 transitions, 1979 flow [2024-06-21 21:21:57,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:21:57,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:57,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:57,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-21 21:21:57,923 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:57,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:57,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1880184075, now seen corresponding path program 3 times [2024-06-21 21:21:57,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:57,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213141239] [2024-06-21 21:21:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:57,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:21:58,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:21:58,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:21:58,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213141239] [2024-06-21 21:21:58,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213141239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:21:58,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:21:58,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:21:58,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628163578] [2024-06-21 21:21:58,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:21:58,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:21:58,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:21:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:21:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:21:58,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:21:58,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 215 transitions, 1979 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:58,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:21:58,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:21:58,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:21:59,302 INFO L124 PetriNetUnfolderBase]: 569/1173 cut-off events. [2024-06-21 21:21:59,303 INFO L125 PetriNetUnfolderBase]: For 44541/44541 co-relation queries the response was YES. [2024-06-21 21:21:59,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6375 conditions, 1173 events. 569/1173 cut-off events. For 44541/44541 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7214 event pairs, 127 based on Foata normal form. 1/1173 useless extension candidates. Maximal degree in co-relation 6248. Up to 1034 conditions per place. [2024-06-21 21:21:59,313 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 180 selfloop transitions, 47 changer transitions 0/231 dead transitions. [2024-06-21 21:21:59,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 231 transitions, 2543 flow [2024-06-21 21:21:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:21:59,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:21:59,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:21:59,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:21:59,314 INFO L175 Difference]: Start difference. First operand has 295 places, 215 transitions, 1979 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:21:59,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 231 transitions, 2543 flow [2024-06-21 21:21:59,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 231 transitions, 2431 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 21:21:59,484 INFO L231 Difference]: Finished difference. Result has 296 places, 217 transitions, 2052 flow [2024-06-21 21:21:59,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=296, PETRI_TRANSITIONS=217} [2024-06-21 21:21:59,484 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-21 21:21:59,484 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 217 transitions, 2052 flow [2024-06-21 21:21:59,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:21:59,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:21:59,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:21:59,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-21 21:21:59,485 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:21:59,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:21:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash -816209069, now seen corresponding path program 4 times [2024-06-21 21:21:59,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:21:59,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647168905] [2024-06-21 21:21:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:21:59,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:21:59,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:00,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:00,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:00,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647168905] [2024-06-21 21:22:00,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647168905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:00,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:00,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:00,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379267770] [2024-06-21 21:22:00,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:00,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:00,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:00,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:00,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:00,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:00,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 217 transitions, 2052 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:00,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:00,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:00,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:00,984 INFO L124 PetriNetUnfolderBase]: 572/1180 cut-off events. [2024-06-21 21:22:00,984 INFO L125 PetriNetUnfolderBase]: For 45547/45547 co-relation queries the response was YES. [2024-06-21 21:22:00,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6474 conditions, 1180 events. 572/1180 cut-off events. For 45547/45547 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7267 event pairs, 138 based on Foata normal form. 1/1180 useless extension candidates. Maximal degree in co-relation 6347. Up to 1022 conditions per place. [2024-06-21 21:22:00,994 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 44 changer transitions 3/234 dead transitions. [2024-06-21 21:22:00,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 234 transitions, 2665 flow [2024-06-21 21:22:00,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:00,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:00,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 21:22:00,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 21:22:00,995 INFO L175 Difference]: Start difference. First operand has 296 places, 217 transitions, 2052 flow. Second operand 12 states and 151 transitions. [2024-06-21 21:22:00,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 234 transitions, 2665 flow [2024-06-21 21:22:01,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 234 transitions, 2506 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-21 21:22:01,164 INFO L231 Difference]: Finished difference. Result has 300 places, 219 transitions, 2079 flow [2024-06-21 21:22:01,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1897, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2079, PETRI_PLACES=300, PETRI_TRANSITIONS=219} [2024-06-21 21:22:01,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-21 21:22:01,165 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 219 transitions, 2079 flow [2024-06-21 21:22:01,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:01,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:01,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:01,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-21 21:22:01,165 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:01,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:01,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1003401371, now seen corresponding path program 26 times [2024-06-21 21:22:01,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:01,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613922087] [2024-06-21 21:22:01,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:01,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:01,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613922087] [2024-06-21 21:22:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613922087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:01,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:01,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:01,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913805450] [2024-06-21 21:22:01,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:01,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:01,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:02,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:02,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 219 transitions, 2079 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:02,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:02,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:02,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:02,371 INFO L124 PetriNetUnfolderBase]: 567/1163 cut-off events. [2024-06-21 21:22:02,371 INFO L125 PetriNetUnfolderBase]: For 46522/46522 co-relation queries the response was YES. [2024-06-21 21:22:02,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 1163 events. 567/1163 cut-off events. For 46522/46522 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7172 event pairs, 133 based on Foata normal form. 2/1162 useless extension candidates. Maximal degree in co-relation 6192. Up to 970 conditions per place. [2024-06-21 21:22:02,382 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 182 selfloop transitions, 47 changer transitions 2/235 dead transitions. [2024-06-21 21:22:02,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 235 transitions, 2722 flow [2024-06-21 21:22:02,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:02,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 21:22:02,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 21:22:02,383 INFO L175 Difference]: Start difference. First operand has 300 places, 219 transitions, 2079 flow. Second operand 10 states and 133 transitions. [2024-06-21 21:22:02,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 235 transitions, 2722 flow [2024-06-21 21:22:02,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 235 transitions, 2558 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-21 21:22:02,582 INFO L231 Difference]: Finished difference. Result has 301 places, 222 transitions, 2098 flow [2024-06-21 21:22:02,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2098, PETRI_PLACES=301, PETRI_TRANSITIONS=222} [2024-06-21 21:22:02,583 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-21 21:22:02,583 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 222 transitions, 2098 flow [2024-06-21 21:22:02,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:02,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:02,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:02,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-21 21:22:02,583 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:02,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:02,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1009830461, now seen corresponding path program 27 times [2024-06-21 21:22:02,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:02,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538294479] [2024-06-21 21:22:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:02,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:03,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:03,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538294479] [2024-06-21 21:22:03,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538294479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:03,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:03,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:03,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182006528] [2024-06-21 21:22:03,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:03,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:03,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:03,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:03,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:03,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:03,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 222 transitions, 2098 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:03,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:03,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:03,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:03,820 INFO L124 PetriNetUnfolderBase]: 569/1171 cut-off events. [2024-06-21 21:22:03,820 INFO L125 PetriNetUnfolderBase]: For 46091/46091 co-relation queries the response was YES. [2024-06-21 21:22:03,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6326 conditions, 1171 events. 569/1171 cut-off events. For 46091/46091 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7221 event pairs, 133 based on Foata normal form. 2/1170 useless extension candidates. Maximal degree in co-relation 6195. Up to 976 conditions per place. [2024-06-21 21:22:03,831 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 182 selfloop transitions, 48 changer transitions 3/237 dead transitions. [2024-06-21 21:22:03,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 237 transitions, 2719 flow [2024-06-21 21:22:03,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:03,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 21:22:03,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:22:03,832 INFO L175 Difference]: Start difference. First operand has 301 places, 222 transitions, 2098 flow. Second operand 10 states and 132 transitions. [2024-06-21 21:22:03,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 237 transitions, 2719 flow [2024-06-21 21:22:04,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 237 transitions, 2559 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-21 21:22:04,005 INFO L231 Difference]: Finished difference. Result has 305 places, 224 transitions, 2127 flow [2024-06-21 21:22:04,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1942, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2127, PETRI_PLACES=305, PETRI_TRANSITIONS=224} [2024-06-21 21:22:04,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 274 predicate places. [2024-06-21 21:22:04,006 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 224 transitions, 2127 flow [2024-06-21 21:22:04,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:04,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:04,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:04,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-21 21:22:04,006 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:04,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:04,006 INFO L85 PathProgramCache]: Analyzing trace with hash -966208527, now seen corresponding path program 28 times [2024-06-21 21:22:04,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:04,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075276994] [2024-06-21 21:22:04,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:04,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:04,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:04,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:04,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:04,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075276994] [2024-06-21 21:22:04,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075276994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:04,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:04,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:04,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740789207] [2024-06-21 21:22:04,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:04,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:04,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:04,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:04,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:04,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:04,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 224 transitions, 2127 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:04,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:04,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:04,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:05,255 INFO L124 PetriNetUnfolderBase]: 575/1187 cut-off events. [2024-06-21 21:22:05,255 INFO L125 PetriNetUnfolderBase]: For 47057/47057 co-relation queries the response was YES. [2024-06-21 21:22:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6391 conditions, 1187 events. 575/1187 cut-off events. For 47057/47057 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7360 event pairs, 135 based on Foata normal form. 2/1186 useless extension candidates. Maximal degree in co-relation 6258. Up to 988 conditions per place. [2024-06-21 21:22:05,266 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 188 selfloop transitions, 45 changer transitions 3/240 dead transitions. [2024-06-21 21:22:05,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 240 transitions, 2733 flow [2024-06-21 21:22:05,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:05,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:05,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-21 21:22:05,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 21:22:05,267 INFO L175 Difference]: Start difference. First operand has 305 places, 224 transitions, 2127 flow. Second operand 10 states and 135 transitions. [2024-06-21 21:22:05,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 240 transitions, 2733 flow [2024-06-21 21:22:05,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 240 transitions, 2577 flow, removed 35 selfloop flow, removed 5 redundant places. [2024-06-21 21:22:05,458 INFO L231 Difference]: Finished difference. Result has 310 places, 227 transitions, 2125 flow [2024-06-21 21:22:05,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2125, PETRI_PLACES=310, PETRI_TRANSITIONS=227} [2024-06-21 21:22:05,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-21 21:22:05,459 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 227 transitions, 2125 flow [2024-06-21 21:22:05,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:05,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:05,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:05,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-21 21:22:05,460 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:05,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:05,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1669708937, now seen corresponding path program 29 times [2024-06-21 21:22:05,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:05,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232346425] [2024-06-21 21:22:05,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:05,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:06,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232346425] [2024-06-21 21:22:06,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232346425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:06,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:06,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:06,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384929128] [2024-06-21 21:22:06,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:06,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:06,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:06,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:06,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:06,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:06,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 227 transitions, 2125 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:06,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:06,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:06,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:06,641 INFO L124 PetriNetUnfolderBase]: 556/1142 cut-off events. [2024-06-21 21:22:06,641 INFO L125 PetriNetUnfolderBase]: For 50112/50112 co-relation queries the response was YES. [2024-06-21 21:22:06,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6201 conditions, 1142 events. 556/1142 cut-off events. For 50112/50112 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7064 event pairs, 126 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 6067. Up to 924 conditions per place. [2024-06-21 21:22:06,652 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 190 selfloop transitions, 47 changer transitions 0/241 dead transitions. [2024-06-21 21:22:06,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 241 transitions, 2845 flow [2024-06-21 21:22:06,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-21 21:22:06,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-21 21:22:06,653 INFO L175 Difference]: Start difference. First operand has 310 places, 227 transitions, 2125 flow. Second operand 10 states and 136 transitions. [2024-06-21 21:22:06,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 241 transitions, 2845 flow [2024-06-21 21:22:06,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 241 transitions, 2649 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:06,828 INFO L231 Difference]: Finished difference. Result has 310 places, 229 transitions, 2105 flow [2024-06-21 21:22:06,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2105, PETRI_PLACES=310, PETRI_TRANSITIONS=229} [2024-06-21 21:22:06,829 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-21 21:22:06,829 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 229 transitions, 2105 flow [2024-06-21 21:22:06,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:06,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:06,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:06,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-21 21:22:06,830 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:06,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1678688205, now seen corresponding path program 30 times [2024-06-21 21:22:06,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:06,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065357853] [2024-06-21 21:22:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:06,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:07,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:07,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065357853] [2024-06-21 21:22:07,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065357853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:07,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:07,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:07,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888537145] [2024-06-21 21:22:07,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:07,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:07,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:07,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:07,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 229 transitions, 2105 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:07,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:07,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:07,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:07,999 INFO L124 PetriNetUnfolderBase]: 560/1150 cut-off events. [2024-06-21 21:22:07,999 INFO L125 PetriNetUnfolderBase]: For 51020/51020 co-relation queries the response was YES. [2024-06-21 21:22:08,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6156 conditions, 1150 events. 560/1150 cut-off events. For 51020/51020 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7102 event pairs, 130 based on Foata normal form. 2/1149 useless extension candidates. Maximal degree in co-relation 6026. Up to 955 conditions per place. [2024-06-21 21:22:08,009 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 178 selfloop transitions, 58 changer transitions 0/240 dead transitions. [2024-06-21 21:22:08,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 240 transitions, 2639 flow [2024-06-21 21:22:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-21 21:22:08,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:22:08,010 INFO L175 Difference]: Start difference. First operand has 310 places, 229 transitions, 2105 flow. Second operand 10 states and 130 transitions. [2024-06-21 21:22:08,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 240 transitions, 2639 flow [2024-06-21 21:22:08,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 240 transitions, 2541 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-21 21:22:08,186 INFO L231 Difference]: Finished difference. Result has 314 places, 230 transitions, 2169 flow [2024-06-21 21:22:08,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2007, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2169, PETRI_PLACES=314, PETRI_TRANSITIONS=230} [2024-06-21 21:22:08,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-21 21:22:08,186 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 230 transitions, 2169 flow [2024-06-21 21:22:08,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:08,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:08,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:08,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-21 21:22:08,187 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:08,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1875219977, now seen corresponding path program 31 times [2024-06-21 21:22:08,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:08,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168194899] [2024-06-21 21:22:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:08,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:08,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168194899] [2024-06-21 21:22:08,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168194899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:08,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:08,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:08,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577035167] [2024-06-21 21:22:08,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:08,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:08,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:08,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:08,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:09,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:09,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 230 transitions, 2169 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:09,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:09,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:09,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:09,431 INFO L124 PetriNetUnfolderBase]: 564/1158 cut-off events. [2024-06-21 21:22:09,432 INFO L125 PetriNetUnfolderBase]: For 52204/52204 co-relation queries the response was YES. [2024-06-21 21:22:09,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6281 conditions, 1158 events. 564/1158 cut-off events. For 52204/52204 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7170 event pairs, 128 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 6149. Up to 937 conditions per place. [2024-06-21 21:22:09,442 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 185 selfloop transitions, 53 changer transitions 0/242 dead transitions. [2024-06-21 21:22:09,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 242 transitions, 2711 flow [2024-06-21 21:22:09,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 21:22:09,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:22:09,443 INFO L175 Difference]: Start difference. First operand has 314 places, 230 transitions, 2169 flow. Second operand 10 states and 132 transitions. [2024-06-21 21:22:09,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 242 transitions, 2711 flow [2024-06-21 21:22:09,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 242 transitions, 2542 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:09,614 INFO L231 Difference]: Finished difference. Result has 314 places, 231 transitions, 2154 flow [2024-06-21 21:22:09,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2154, PETRI_PLACES=314, PETRI_TRANSITIONS=231} [2024-06-21 21:22:09,615 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-21 21:22:09,615 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 231 transitions, 2154 flow [2024-06-21 21:22:09,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:09,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:09,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:09,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-21 21:22:09,616 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:09,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:09,616 INFO L85 PathProgramCache]: Analyzing trace with hash -738134397, now seen corresponding path program 32 times [2024-06-21 21:22:09,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:09,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205161788] [2024-06-21 21:22:09,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:09,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:09,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:10,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205161788] [2024-06-21 21:22:10,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205161788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:10,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:10,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:10,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358380044] [2024-06-21 21:22:10,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:10,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:10,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:10,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:10,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:10,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:10,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 231 transitions, 2154 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:10,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:10,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:10,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:10,754 INFO L124 PetriNetUnfolderBase]: 561/1153 cut-off events. [2024-06-21 21:22:10,754 INFO L125 PetriNetUnfolderBase]: For 47283/47283 co-relation queries the response was YES. [2024-06-21 21:22:10,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6021 conditions, 1153 events. 561/1153 cut-off events. For 47283/47283 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7165 event pairs, 129 based on Foata normal form. 2/1152 useless extension candidates. Maximal degree in co-relation 5890. Up to 958 conditions per place. [2024-06-21 21:22:10,765 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 191 selfloop transitions, 46 changer transitions 0/241 dead transitions. [2024-06-21 21:22:10,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 241 transitions, 2650 flow [2024-06-21 21:22:10,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:10,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 21:22:10,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 21:22:10,766 INFO L175 Difference]: Start difference. First operand has 314 places, 231 transitions, 2154 flow. Second operand 10 states and 133 transitions. [2024-06-21 21:22:10,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 241 transitions, 2650 flow [2024-06-21 21:22:10,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 241 transitions, 2480 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-21 21:22:10,935 INFO L231 Difference]: Finished difference. Result has 316 places, 231 transitions, 2080 flow [2024-06-21 21:22:10,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2080, PETRI_PLACES=316, PETRI_TRANSITIONS=231} [2024-06-21 21:22:10,935 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-21 21:22:10,936 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 231 transitions, 2080 flow [2024-06-21 21:22:10,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:10,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:10,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:10,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-21 21:22:10,936 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:10,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash 741874815, now seen corresponding path program 33 times [2024-06-21 21:22:10,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:10,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938557497] [2024-06-21 21:22:10,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:10,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:11,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:11,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:11,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938557497] [2024-06-21 21:22:11,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938557497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:11,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:11,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099317348] [2024-06-21 21:22:11,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:11,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:11,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:11,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:11,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:11,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 231 transitions, 2080 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:11,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:11,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:11,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:12,329 INFO L124 PetriNetUnfolderBase]: 565/1161 cut-off events. [2024-06-21 21:22:12,330 INFO L125 PetriNetUnfolderBase]: For 47921/47921 co-relation queries the response was YES. [2024-06-21 21:22:12,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5989 conditions, 1161 events. 565/1161 cut-off events. For 47921/47921 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7202 event pairs, 131 based on Foata normal form. 2/1160 useless extension candidates. Maximal degree in co-relation 5857. Up to 966 conditions per place. [2024-06-21 21:22:12,341 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 190 selfloop transitions, 48 changer transitions 1/243 dead transitions. [2024-06-21 21:22:12,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 243 transitions, 2635 flow [2024-06-21 21:22:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-21 21:22:12,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-21 21:22:12,342 INFO L175 Difference]: Start difference. First operand has 316 places, 231 transitions, 2080 flow. Second operand 10 states and 132 transitions. [2024-06-21 21:22:12,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 243 transitions, 2635 flow [2024-06-21 21:22:12,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 243 transitions, 2524 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:12,523 INFO L231 Difference]: Finished difference. Result has 316 places, 232 transitions, 2117 flow [2024-06-21 21:22:12,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2117, PETRI_PLACES=316, PETRI_TRANSITIONS=232} [2024-06-21 21:22:12,523 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-21 21:22:12,524 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 232 transitions, 2117 flow [2024-06-21 21:22:12,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:12,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:12,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:12,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-21 21:22:12,524 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:12,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1445365925, now seen corresponding path program 34 times [2024-06-21 21:22:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246079276] [2024-06-21 21:22:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:12,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:13,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:13,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246079276] [2024-06-21 21:22:13,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246079276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:13,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:13,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:13,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528180196] [2024-06-21 21:22:13,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:13,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:13,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:13,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:13,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:13,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:13,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 232 transitions, 2117 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:13,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:13,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:13,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:13,664 INFO L124 PetriNetUnfolderBase]: 557/1141 cut-off events. [2024-06-21 21:22:13,664 INFO L125 PetriNetUnfolderBase]: For 48762/48762 co-relation queries the response was YES. [2024-06-21 21:22:13,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5924 conditions, 1141 events. 557/1141 cut-off events. For 48762/48762 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7087 event pairs, 127 based on Foata normal form. 2/1140 useless extension candidates. Maximal degree in co-relation 5792. Up to 932 conditions per place. [2024-06-21 21:22:13,675 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 191 selfloop transitions, 49 changer transitions 0/244 dead transitions. [2024-06-21 21:22:13,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 244 transitions, 2667 flow [2024-06-21 21:22:13,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:13,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-21 21:22:13,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-21 21:22:13,676 INFO L175 Difference]: Start difference. First operand has 316 places, 232 transitions, 2117 flow. Second operand 10 states and 133 transitions. [2024-06-21 21:22:13,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 244 transitions, 2667 flow [2024-06-21 21:22:13,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 244 transitions, 2537 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-21 21:22:13,838 INFO L231 Difference]: Finished difference. Result has 320 places, 233 transitions, 2137 flow [2024-06-21 21:22:13,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2137, PETRI_PLACES=320, PETRI_TRANSITIONS=233} [2024-06-21 21:22:13,838 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-21 21:22:13,838 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 233 transitions, 2137 flow [2024-06-21 21:22:13,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:13,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:13,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:13,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-21 21:22:13,839 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:13,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:13,839 INFO L85 PathProgramCache]: Analyzing trace with hash 737286195, now seen corresponding path program 35 times [2024-06-21 21:22:13,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:13,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841526841] [2024-06-21 21:22:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:13,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:14,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:14,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:14,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841526841] [2024-06-21 21:22:14,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841526841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:14,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:14,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-21 21:22:14,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120502737] [2024-06-21 21:22:14,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:14,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-21 21:22:14,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:14,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-21 21:22:14,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-21 21:22:14,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:14,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 233 transitions, 2137 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:14,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:14,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:14,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:15,089 INFO L124 PetriNetUnfolderBase]: 554/1136 cut-off events. [2024-06-21 21:22:15,089 INFO L125 PetriNetUnfolderBase]: For 43076/43076 co-relation queries the response was YES. [2024-06-21 21:22:15,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5652 conditions, 1136 events. 554/1136 cut-off events. For 43076/43076 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7059 event pairs, 124 based on Foata normal form. 2/1135 useless extension candidates. Maximal degree in co-relation 5519. Up to 847 conditions per place. [2024-06-21 21:22:15,100 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 57 changer transitions 0/245 dead transitions. [2024-06-21 21:22:15,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 245 transitions, 2645 flow [2024-06-21 21:22:15,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-21 21:22:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-21 21:22:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-21 21:22:15,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-21 21:22:15,101 INFO L175 Difference]: Start difference. First operand has 320 places, 233 transitions, 2137 flow. Second operand 10 states and 134 transitions. [2024-06-21 21:22:15,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 245 transitions, 2645 flow [2024-06-21 21:22:15,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 245 transitions, 2505 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-21 21:22:15,277 INFO L231 Difference]: Finished difference. Result has 322 places, 233 transitions, 2115 flow [2024-06-21 21:22:15,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2115, PETRI_PLACES=322, PETRI_TRANSITIONS=233} [2024-06-21 21:22:15,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 21:22:15,277 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 233 transitions, 2115 flow [2024-06-21 21:22:15,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 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) [2024-06-21 21:22:15,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:15,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:15,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-21 21:22:15,278 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:15,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1356186029, now seen corresponding path program 5 times [2024-06-21 21:22:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437074076] [2024-06-21 21:22:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:16,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:16,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437074076] [2024-06-21 21:22:16,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437074076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:16,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:16,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:16,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225887758] [2024-06-21 21:22:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:16,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:16,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:16,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:16,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 233 transitions, 2115 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:16,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:16,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:16,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:16,883 INFO L124 PetriNetUnfolderBase]: 557/1144 cut-off events. [2024-06-21 21:22:16,884 INFO L125 PetriNetUnfolderBase]: For 40851/40851 co-relation queries the response was YES. [2024-06-21 21:22:16,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5703 conditions, 1144 events. 557/1144 cut-off events. For 40851/40851 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7127 event pairs, 198 based on Foata normal form. 1/1144 useless extension candidates. Maximal degree in co-relation 5569. Up to 1053 conditions per place. [2024-06-21 21:22:16,894 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2024-06-21 21:22:16,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 245 transitions, 2695 flow [2024-06-21 21:22:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:22:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:22:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-21 21:22:16,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-21 21:22:16,896 INFO L175 Difference]: Start difference. First operand has 322 places, 233 transitions, 2115 flow. Second operand 11 states and 134 transitions. [2024-06-21 21:22:16,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 245 transitions, 2695 flow [2024-06-21 21:22:17,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 245 transitions, 2407 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-21 21:22:17,077 INFO L231 Difference]: Finished difference. Result has 322 places, 235 transitions, 1948 flow [2024-06-21 21:22:17,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1948, PETRI_PLACES=322, PETRI_TRANSITIONS=235} [2024-06-21 21:22:17,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-21 21:22:17,077 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 235 transitions, 1948 flow [2024-06-21 21:22:17,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:17,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:17,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:17,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-21 21:22:17,078 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:17,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1633242329, now seen corresponding path program 6 times [2024-06-21 21:22:17,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:17,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119131200] [2024-06-21 21:22:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:17,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:17,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119131200] [2024-06-21 21:22:17,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119131200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:17,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:17,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:17,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511817327] [2024-06-21 21:22:17,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:17,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:17,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:17,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:17,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:18,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:18,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 235 transitions, 1948 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:18,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:18,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:18,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:18,369 INFO L124 PetriNetUnfolderBase]: 560/1148 cut-off events. [2024-06-21 21:22:18,369 INFO L125 PetriNetUnfolderBase]: For 41404/41404 co-relation queries the response was YES. [2024-06-21 21:22:18,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5387 conditions, 1148 events. 560/1148 cut-off events. For 41404/41404 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7174 event pairs, 106 based on Foata normal form. 1/1143 useless extension candidates. Maximal degree in co-relation 5254. Up to 878 conditions per place. [2024-06-21 21:22:18,379 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 88 changer transitions 0/247 dead transitions. [2024-06-21 21:22:18,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 247 transitions, 2536 flow [2024-06-21 21:22:18,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:22:18,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:22:18,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 21:22:18,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 21:22:18,385 INFO L175 Difference]: Start difference. First operand has 322 places, 235 transitions, 1948 flow. Second operand 11 states and 145 transitions. [2024-06-21 21:22:18,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 247 transitions, 2536 flow [2024-06-21 21:22:18,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 247 transitions, 2395 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:18,546 INFO L231 Difference]: Finished difference. Result has 323 places, 237 transitions, 2072 flow [2024-06-21 21:22:18,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2072, PETRI_PLACES=323, PETRI_TRANSITIONS=237} [2024-06-21 21:22:18,546 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-21 21:22:18,547 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 237 transitions, 2072 flow [2024-06-21 21:22:18,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:18,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:18,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:18,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-21 21:22:18,547 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:18,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:18,547 INFO L85 PathProgramCache]: Analyzing trace with hash -193070253, now seen corresponding path program 7 times [2024-06-21 21:22:18,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:18,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961481833] [2024-06-21 21:22:18,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:18,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:19,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:19,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:19,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961481833] [2024-06-21 21:22:19,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961481833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:19,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:19,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:19,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373407791] [2024-06-21 21:22:19,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:19,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:19,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:19,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:19,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:19,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:19,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 237 transitions, 2072 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:19,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:19,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:19,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:20,090 INFO L124 PetriNetUnfolderBase]: 563/1158 cut-off events. [2024-06-21 21:22:20,090 INFO L125 PetriNetUnfolderBase]: For 42571/42571 co-relation queries the response was YES. [2024-06-21 21:22:20,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5510 conditions, 1158 events. 563/1158 cut-off events. For 42571/42571 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7244 event pairs, 198 based on Foata normal form. 1/1158 useless extension candidates. Maximal degree in co-relation 5377. Up to 1054 conditions per place. [2024-06-21 21:22:20,101 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 222 selfloop transitions, 24 changer transitions 0/250 dead transitions. [2024-06-21 21:22:20,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 250 transitions, 2670 flow [2024-06-21 21:22:20,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:20,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 21:22:20,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-21 21:22:20,102 INFO L175 Difference]: Start difference. First operand has 323 places, 237 transitions, 2072 flow. Second operand 12 states and 145 transitions. [2024-06-21 21:22:20,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 250 transitions, 2670 flow [2024-06-21 21:22:20,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 250 transitions, 2423 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-21 21:22:20,257 INFO L231 Difference]: Finished difference. Result has 326 places, 239 transitions, 1967 flow [2024-06-21 21:22:20,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1825, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1967, PETRI_PLACES=326, PETRI_TRANSITIONS=239} [2024-06-21 21:22:20,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 295 predicate places. [2024-06-21 21:22:20,258 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 239 transitions, 1967 flow [2024-06-21 21:22:20,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:20,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:20,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:20,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-21 21:22:20,258 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:20,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:20,259 INFO L85 PathProgramCache]: Analyzing trace with hash -773178507, now seen corresponding path program 8 times [2024-06-21 21:22:20,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:20,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188765179] [2024-06-21 21:22:20,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:20,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188765179] [2024-06-21 21:22:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188765179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:21,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216145684] [2024-06-21 21:22:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:21,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:21,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:21,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:21,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:21,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 239 transitions, 1967 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:21,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:21,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:21,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:21,395 INFO L124 PetriNetUnfolderBase]: 566/1162 cut-off events. [2024-06-21 21:22:21,396 INFO L125 PetriNetUnfolderBase]: For 43560/43560 co-relation queries the response was YES. [2024-06-21 21:22:21,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5437 conditions, 1162 events. 566/1162 cut-off events. For 43560/43560 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7291 event pairs, 106 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 5303. Up to 888 conditions per place. [2024-06-21 21:22:21,423 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 76 changer transitions 0/251 dead transitions. [2024-06-21 21:22:21,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 251 transitions, 2569 flow [2024-06-21 21:22:21,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:22:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:22:21,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 21:22:21,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 21:22:21,425 INFO L175 Difference]: Start difference. First operand has 326 places, 239 transitions, 1967 flow. Second operand 11 states and 146 transitions. [2024-06-21 21:22:21,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 251 transitions, 2569 flow [2024-06-21 21:22:21,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 251 transitions, 2443 flow, removed 42 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:21,595 INFO L231 Difference]: Finished difference. Result has 327 places, 241 transitions, 2088 flow [2024-06-21 21:22:21,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2088, PETRI_PLACES=327, PETRI_TRANSITIONS=241} [2024-06-21 21:22:21,596 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-21 21:22:21,596 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 241 transitions, 2088 flow [2024-06-21 21:22:21,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:21,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:21,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:21,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-21 21:22:21,596 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:21,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1433052333, now seen corresponding path program 9 times [2024-06-21 21:22:21,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:21,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145199668] [2024-06-21 21:22:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:21,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:22,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:22,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:22,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145199668] [2024-06-21 21:22:22,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145199668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:22,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:22,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:22,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730227946] [2024-06-21 21:22:22,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:22,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:22,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:22,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:22,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:22,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:22,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 241 transitions, 2088 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:22,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:22,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:22,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:22,904 INFO L124 PetriNetUnfolderBase]: 564/1159 cut-off events. [2024-06-21 21:22:22,904 INFO L125 PetriNetUnfolderBase]: For 39561/39561 co-relation queries the response was YES. [2024-06-21 21:22:22,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 1159 events. 564/1159 cut-off events. For 39561/39561 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7266 event pairs, 106 based on Foata normal form. 1/1154 useless extension candidates. Maximal degree in co-relation 5210. Up to 885 conditions per place. [2024-06-21 21:22:22,915 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 70 changer transitions 0/253 dead transitions. [2024-06-21 21:22:22,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 253 transitions, 2694 flow [2024-06-21 21:22:22,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:22:22,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:22:22,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 21:22:22,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 21:22:22,916 INFO L175 Difference]: Start difference. First operand has 327 places, 241 transitions, 2088 flow. Second operand 11 states and 147 transitions. [2024-06-21 21:22:22,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 253 transitions, 2694 flow [2024-06-21 21:22:23,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 253 transitions, 2467 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-21 21:22:23,051 INFO L231 Difference]: Finished difference. Result has 329 places, 243 transitions, 2096 flow [2024-06-21 21:22:23,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2096, PETRI_PLACES=329, PETRI_TRANSITIONS=243} [2024-06-21 21:22:23,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-21 21:22:23,052 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 243 transitions, 2096 flow [2024-06-21 21:22:23,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:23,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:23,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:23,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-21 21:22:23,052 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:23,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1629034246, now seen corresponding path program 1 times [2024-06-21 21:22:23,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:23,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155062984] [2024-06-21 21:22:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:23,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:23,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:23,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:23,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155062984] [2024-06-21 21:22:23,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155062984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:23,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:23,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566566819] [2024-06-21 21:22:23,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:23,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:23,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:23,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:23,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:24,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:24,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 243 transitions, 2096 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:24,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:24,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:24,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:24,501 INFO L124 PetriNetUnfolderBase]: 575/1184 cut-off events. [2024-06-21 21:22:24,501 INFO L125 PetriNetUnfolderBase]: For 50249/50249 co-relation queries the response was YES. [2024-06-21 21:22:24,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5546 conditions, 1184 events. 575/1184 cut-off events. For 50249/50249 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7458 event pairs, 93 based on Foata normal form. 2/1185 useless extension candidates. Maximal degree in co-relation 5410. Up to 1001 conditions per place. [2024-06-21 21:22:24,512 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/265 dead transitions. [2024-06-21 21:22:24,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 265 transitions, 2856 flow [2024-06-21 21:22:24,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:24,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:24,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 21:22:24,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:22:24,513 INFO L175 Difference]: Start difference. First operand has 329 places, 243 transitions, 2096 flow. Second operand 12 states and 160 transitions. [2024-06-21 21:22:24,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 265 transitions, 2856 flow [2024-06-21 21:22:24,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 265 transitions, 2637 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-21 21:22:24,668 INFO L231 Difference]: Finished difference. Result has 332 places, 245 transitions, 1961 flow [2024-06-21 21:22:24,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1877, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1961, PETRI_PLACES=332, PETRI_TRANSITIONS=245} [2024-06-21 21:22:24,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 301 predicate places. [2024-06-21 21:22:24,668 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 245 transitions, 1961 flow [2024-06-21 21:22:24,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:24,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:24,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:24,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-21 21:22:24,669 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:24,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1819307000, now seen corresponding path program 2 times [2024-06-21 21:22:24,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:24,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250613653] [2024-06-21 21:22:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:24,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:25,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:25,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:25,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250613653] [2024-06-21 21:22:25,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250613653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:25,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:25,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:25,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955427874] [2024-06-21 21:22:25,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:25,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:25,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:25,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:25,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:25,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:25,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 245 transitions, 1961 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:25,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:25,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:25,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:25,999 INFO L124 PetriNetUnfolderBase]: 586/1205 cut-off events. [2024-06-21 21:22:25,999 INFO L125 PetriNetUnfolderBase]: For 56934/56934 co-relation queries the response was YES. [2024-06-21 21:22:26,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5685 conditions, 1205 events. 586/1205 cut-off events. For 56934/56934 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7598 event pairs, 102 based on Foata normal form. 2/1206 useless extension candidates. Maximal degree in co-relation 5548. Up to 1066 conditions per place. [2024-06-21 21:22:26,011 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/265 dead transitions. [2024-06-21 21:22:26,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 265 transitions, 2723 flow [2024-06-21 21:22:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:26,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 21:22:26,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:22:26,012 INFO L175 Difference]: Start difference. First operand has 332 places, 245 transitions, 1961 flow. Second operand 12 states and 156 transitions. [2024-06-21 21:22:26,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 265 transitions, 2723 flow [2024-06-21 21:22:26,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 265 transitions, 2674 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 21:22:26,179 INFO L231 Difference]: Finished difference. Result has 336 places, 247 transitions, 2000 flow [2024-06-21 21:22:26,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2000, PETRI_PLACES=336, PETRI_TRANSITIONS=247} [2024-06-21 21:22:26,179 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-21 21:22:26,179 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 247 transitions, 2000 flow [2024-06-21 21:22:26,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:26,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:26,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:26,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-21 21:22:26,180 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:26,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:26,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1813737230, now seen corresponding path program 3 times [2024-06-21 21:22:26,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:26,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507732854] [2024-06-21 21:22:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:26,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:27,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:27,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507732854] [2024-06-21 21:22:27,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507732854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:27,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:27,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:27,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079521259] [2024-06-21 21:22:27,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:27,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:27,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:27,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:27,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:27,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:27,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 247 transitions, 2000 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:27,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:27,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:27,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:27,550 INFO L124 PetriNetUnfolderBase]: 583/1200 cut-off events. [2024-06-21 21:22:27,550 INFO L125 PetriNetUnfolderBase]: For 51694/51694 co-relation queries the response was YES. [2024-06-21 21:22:27,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5524 conditions, 1200 events. 583/1200 cut-off events. For 51694/51694 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7572 event pairs, 103 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 5385. Up to 1078 conditions per place. [2024-06-21 21:22:27,560 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 26 changer transitions 0/263 dead transitions. [2024-06-21 21:22:27,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 263 transitions, 2558 flow [2024-06-21 21:22:27,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:27,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 21:22:27,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 21:22:27,561 INFO L175 Difference]: Start difference. First operand has 336 places, 247 transitions, 2000 flow. Second operand 12 states and 153 transitions. [2024-06-21 21:22:27,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 263 transitions, 2558 flow [2024-06-21 21:22:27,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 263 transitions, 2509 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-21 21:22:27,746 INFO L231 Difference]: Finished difference. Result has 340 places, 247 transitions, 2007 flow [2024-06-21 21:22:27,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2007, PETRI_PLACES=340, PETRI_TRANSITIONS=247} [2024-06-21 21:22:27,746 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-21 21:22:27,746 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 247 transitions, 2007 flow [2024-06-21 21:22:27,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:27,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:27,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:27,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-21 21:22:27,747 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:27,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:27,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1819451150, now seen corresponding path program 4 times [2024-06-21 21:22:27,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:27,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883032707] [2024-06-21 21:22:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:27,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:27,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:28,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:28,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:28,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883032707] [2024-06-21 21:22:28,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883032707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:28,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:28,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:28,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354334829] [2024-06-21 21:22:28,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:28,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:28,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:28,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:28,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:28,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:28,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 247 transitions, 2007 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:28,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:28,847 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:28,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:29,143 INFO L124 PetriNetUnfolderBase]: 580/1195 cut-off events. [2024-06-21 21:22:29,144 INFO L125 PetriNetUnfolderBase]: For 45374/45374 co-relation queries the response was YES. [2024-06-21 21:22:29,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5353 conditions, 1195 events. 580/1195 cut-off events. For 45374/45374 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7538 event pairs, 98 based on Foata normal form. 2/1196 useless extension candidates. Maximal degree in co-relation 5212. Up to 1037 conditions per place. [2024-06-21 21:22:29,186 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 28 changer transitions 0/265 dead transitions. [2024-06-21 21:22:29,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 265 transitions, 2573 flow [2024-06-21 21:22:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:29,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:29,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 21:22:29,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-21 21:22:29,187 INFO L175 Difference]: Start difference. First operand has 340 places, 247 transitions, 2007 flow. Second operand 12 states and 157 transitions. [2024-06-21 21:22:29,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 265 transitions, 2573 flow [2024-06-21 21:22:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 265 transitions, 2511 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:22:29,344 INFO L231 Difference]: Finished difference. Result has 341 places, 247 transitions, 2005 flow [2024-06-21 21:22:29,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1945, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2005, PETRI_PLACES=341, PETRI_TRANSITIONS=247} [2024-06-21 21:22:29,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-21 21:22:29,344 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 247 transitions, 2005 flow [2024-06-21 21:22:29,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:29,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:29,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:29,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-21 21:22:29,345 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:29,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:29,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1173903660, now seen corresponding path program 5 times [2024-06-21 21:22:29,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:29,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306193324] [2024-06-21 21:22:29,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:29,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:30,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:30,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:30,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306193324] [2024-06-21 21:22:30,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306193324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:30,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:30,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:30,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51966960] [2024-06-21 21:22:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:30,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:30,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:30,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:30,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:30,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 247 transitions, 2005 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:30,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:30,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:30,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:30,692 INFO L124 PetriNetUnfolderBase]: 584/1203 cut-off events. [2024-06-21 21:22:30,692 INFO L125 PetriNetUnfolderBase]: For 46403/46403 co-relation queries the response was YES. [2024-06-21 21:22:30,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5402 conditions, 1203 events. 584/1203 cut-off events. For 46403/46403 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7616 event pairs, 96 based on Foata normal form. 2/1204 useless extension candidates. Maximal degree in co-relation 5260. Up to 1057 conditions per place. [2024-06-21 21:22:30,704 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 243 selfloop transitions, 22 changer transitions 0/269 dead transitions. [2024-06-21 21:22:30,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 269 transitions, 2601 flow [2024-06-21 21:22:30,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:30,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:30,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 21:22:30,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 21:22:30,705 INFO L175 Difference]: Start difference. First operand has 341 places, 247 transitions, 2005 flow. Second operand 12 states and 154 transitions. [2024-06-21 21:22:30,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 269 transitions, 2601 flow [2024-06-21 21:22:30,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 269 transitions, 2522 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-21 21:22:30,896 INFO L231 Difference]: Finished difference. Result has 341 places, 248 transitions, 1990 flow [2024-06-21 21:22:30,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1926, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1990, PETRI_PLACES=341, PETRI_TRANSITIONS=248} [2024-06-21 21:22:30,897 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-21 21:22:30,897 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 248 transitions, 1990 flow [2024-06-21 21:22:30,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:30,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:30,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:30,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-21 21:22:30,897 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:30,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:30,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1393780100, now seen corresponding path program 1 times [2024-06-21 21:22:30,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:30,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162084230] [2024-06-21 21:22:30,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:30,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:32,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:32,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162084230] [2024-06-21 21:22:32,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162084230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:32,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:32,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:22:32,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13256935] [2024-06-21 21:22:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:32,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:22:32,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:32,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:22:32,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:22:32,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:32,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 248 transitions, 1990 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:22:32,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:32,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:32,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:32,498 INFO L124 PetriNetUnfolderBase]: 596/1231 cut-off events. [2024-06-21 21:22:32,499 INFO L125 PetriNetUnfolderBase]: For 70903/70903 co-relation queries the response was YES. [2024-06-21 21:22:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5595 conditions, 1231 events. 596/1231 cut-off events. For 70903/70903 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7805 event pairs, 108 based on Foata normal form. 8/1238 useless extension candidates. Maximal degree in co-relation 5453. Up to 1070 conditions per place. [2024-06-21 21:22:32,510 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 229 selfloop transitions, 22 changer transitions 13/268 dead transitions. [2024-06-21 21:22:32,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 268 transitions, 2652 flow [2024-06-21 21:22:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:22:32,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:22:32,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-21 21:22:32,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-21 21:22:32,511 INFO L175 Difference]: Start difference. First operand has 341 places, 248 transitions, 1990 flow. Second operand 13 states and 167 transitions. [2024-06-21 21:22:32,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 268 transitions, 2652 flow [2024-06-21 21:22:32,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 268 transitions, 2598 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:32,713 INFO L231 Difference]: Finished difference. Result has 344 places, 242 transitions, 1927 flow [2024-06-21 21:22:32,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1936, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1927, PETRI_PLACES=344, PETRI_TRANSITIONS=242} [2024-06-21 21:22:32,713 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-21 21:22:32,714 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 242 transitions, 1927 flow [2024-06-21 21:22:32,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:22:32,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:32,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:32,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-21 21:22:32,714 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:32,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:32,715 INFO L85 PathProgramCache]: Analyzing trace with hash -308515196, now seen corresponding path program 6 times [2024-06-21 21:22:32,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:32,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103451835] [2024-06-21 21:22:32,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:32,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:32,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:33,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:33,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:33,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103451835] [2024-06-21 21:22:33,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103451835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:33,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:33,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:33,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763966580] [2024-06-21 21:22:33,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:33,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:33,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:33,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:33,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:33,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:33,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 242 transitions, 1927 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:33,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:33,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:33,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:33,812 INFO L124 PetriNetUnfolderBase]: 583/1204 cut-off events. [2024-06-21 21:22:33,812 INFO L125 PetriNetUnfolderBase]: For 56375/56375 co-relation queries the response was YES. [2024-06-21 21:22:33,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5548 conditions, 1204 events. 583/1204 cut-off events. For 56375/56375 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7625 event pairs, 132 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 5405. Up to 1047 conditions per place. [2024-06-21 21:22:33,851 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 26 changer transitions 0/262 dead transitions. [2024-06-21 21:22:33,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 262 transitions, 2695 flow [2024-06-21 21:22:33,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 21:22:33,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-21 21:22:33,853 INFO L175 Difference]: Start difference. First operand has 344 places, 242 transitions, 1927 flow. Second operand 12 states and 157 transitions. [2024-06-21 21:22:33,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 262 transitions, 2695 flow [2024-06-21 21:22:34,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 262 transitions, 2631 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-06-21 21:22:34,065 INFO L231 Difference]: Finished difference. Result has 337 places, 244 transitions, 1957 flow [2024-06-21 21:22:34,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1867, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1957, PETRI_PLACES=337, PETRI_TRANSITIONS=244} [2024-06-21 21:22:34,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-21 21:22:34,066 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 244 transitions, 1957 flow [2024-06-21 21:22:34,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:34,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:34,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:34,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-21 21:22:34,066 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:34,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:34,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1222899978, now seen corresponding path program 7 times [2024-06-21 21:22:34,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:34,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790033471] [2024-06-21 21:22:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:34,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:34,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790033471] [2024-06-21 21:22:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790033471] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:34,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:34,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:34,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558784954] [2024-06-21 21:22:34,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:34,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:34,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:34,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:34,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:34,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 244 transitions, 1957 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:34,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:34,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:34,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:35,290 INFO L124 PetriNetUnfolderBase]: 580/1198 cut-off events. [2024-06-21 21:22:35,290 INFO L125 PetriNetUnfolderBase]: For 47559/47559 co-relation queries the response was YES. [2024-06-21 21:22:35,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5345 conditions, 1198 events. 580/1198 cut-off events. For 47559/47559 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 7594 event pairs, 108 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 5205. Up to 1030 conditions per place. [2024-06-21 21:22:35,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 38 changer transitions 0/260 dead transitions. [2024-06-21 21:22:35,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 260 transitions, 2507 flow [2024-06-21 21:22:35,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:35,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 21:22:35,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:22:35,303 INFO L175 Difference]: Start difference. First operand has 337 places, 244 transitions, 1957 flow. Second operand 12 states and 156 transitions. [2024-06-21 21:22:35,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 260 transitions, 2507 flow [2024-06-21 21:22:35,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 260 transitions, 2446 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-21 21:22:35,486 INFO L231 Difference]: Finished difference. Result has 341 places, 244 transitions, 1976 flow [2024-06-21 21:22:35,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1976, PETRI_PLACES=341, PETRI_TRANSITIONS=244} [2024-06-21 21:22:35,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 310 predicate places. [2024-06-21 21:22:35,486 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 244 transitions, 1976 flow [2024-06-21 21:22:35,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:35,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:35,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:35,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-21 21:22:35,487 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:35,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:35,487 INFO L85 PathProgramCache]: Analyzing trace with hash 636839636, now seen corresponding path program 8 times [2024-06-21 21:22:35,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:35,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417002957] [2024-06-21 21:22:35,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:35,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:35,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:36,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:36,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417002957] [2024-06-21 21:22:36,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417002957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:36,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:36,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:36,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038126528] [2024-06-21 21:22:36,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:36,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:36,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:36,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:36,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:36,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 244 transitions, 1976 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:36,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:36,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:36,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:36,960 INFO L124 PetriNetUnfolderBase]: 591/1219 cut-off events. [2024-06-21 21:22:36,961 INFO L125 PetriNetUnfolderBase]: For 56542/56542 co-relation queries the response was YES. [2024-06-21 21:22:36,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5663 conditions, 1219 events. 591/1219 cut-off events. For 56542/56542 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7733 event pairs, 109 based on Foata normal form. 2/1220 useless extension candidates. Maximal degree in co-relation 5521. Up to 954 conditions per place. [2024-06-21 21:22:36,971 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 41 changer transitions 0/265 dead transitions. [2024-06-21 21:22:36,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 265 transitions, 2756 flow [2024-06-21 21:22:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:36,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 161 transitions. [2024-06-21 21:22:36,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4192708333333333 [2024-06-21 21:22:36,972 INFO L175 Difference]: Start difference. First operand has 341 places, 244 transitions, 1976 flow. Second operand 12 states and 161 transitions. [2024-06-21 21:22:36,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 265 transitions, 2756 flow [2024-06-21 21:22:37,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 265 transitions, 2678 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-21 21:22:37,222 INFO L231 Difference]: Finished difference. Result has 342 places, 246 transitions, 2022 flow [2024-06-21 21:22:37,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2022, PETRI_PLACES=342, PETRI_TRANSITIONS=246} [2024-06-21 21:22:37,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-21 21:22:37,223 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 246 transitions, 2022 flow [2024-06-21 21:22:37,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:37,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:37,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:37,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-21 21:22:37,224 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:37,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1875957494, now seen corresponding path program 9 times [2024-06-21 21:22:37,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:37,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738672206] [2024-06-21 21:22:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:37,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:37,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:37,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738672206] [2024-06-21 21:22:37,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738672206] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:37,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:37,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:37,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678613020] [2024-06-21 21:22:37,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:37,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:37,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:37,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:37,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:38,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:38,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 246 transitions, 2022 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:38,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:38,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:38,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:38,481 INFO L124 PetriNetUnfolderBase]: 595/1227 cut-off events. [2024-06-21 21:22:38,481 INFO L125 PetriNetUnfolderBase]: For 57997/57997 co-relation queries the response was YES. [2024-06-21 21:22:38,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5756 conditions, 1227 events. 595/1227 cut-off events. For 57997/57997 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7767 event pairs, 115 based on Foata normal form. 2/1228 useless extension candidates. Maximal degree in co-relation 5613. Up to 1059 conditions per place. [2024-06-21 21:22:38,491 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 43 changer transitions 0/263 dead transitions. [2024-06-21 21:22:38,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 263 transitions, 2598 flow [2024-06-21 21:22:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:38,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-21 21:22:38,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4036458333333333 [2024-06-21 21:22:38,492 INFO L175 Difference]: Start difference. First operand has 342 places, 246 transitions, 2022 flow. Second operand 12 states and 155 transitions. [2024-06-21 21:22:38,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 263 transitions, 2598 flow [2024-06-21 21:22:38,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 263 transitions, 2523 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-21 21:22:38,731 INFO L231 Difference]: Finished difference. Result has 346 places, 247 transitions, 2059 flow [2024-06-21 21:22:38,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2059, PETRI_PLACES=346, PETRI_TRANSITIONS=247} [2024-06-21 21:22:38,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-21 21:22:38,731 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 247 transitions, 2059 flow [2024-06-21 21:22:38,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:38,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:38,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:38,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-21 21:22:38,732 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:38,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:38,732 INFO L85 PathProgramCache]: Analyzing trace with hash 917253328, now seen corresponding path program 10 times [2024-06-21 21:22:38,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:38,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659416751] [2024-06-21 21:22:38,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:38,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:39,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:39,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659416751] [2024-06-21 21:22:39,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659416751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:39,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:39,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142838120] [2024-06-21 21:22:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:39,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:39,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:39,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:39,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:39,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:39,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 247 transitions, 2059 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:39,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:39,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:39,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:39,917 INFO L124 PetriNetUnfolderBase]: 599/1236 cut-off events. [2024-06-21 21:22:39,917 INFO L125 PetriNetUnfolderBase]: For 59057/59057 co-relation queries the response was YES. [2024-06-21 21:22:39,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5832 conditions, 1236 events. 599/1236 cut-off events. For 59057/59057 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7847 event pairs, 144 based on Foata normal form. 2/1237 useless extension candidates. Maximal degree in co-relation 5687. Up to 1104 conditions per place. [2024-06-21 21:22:39,930 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 25 changer transitions 0/264 dead transitions. [2024-06-21 21:22:39,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 264 transitions, 2635 flow [2024-06-21 21:22:39,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:39,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 21:22:39,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 21:22:39,931 INFO L175 Difference]: Start difference. First operand has 346 places, 247 transitions, 2059 flow. Second operand 12 states and 153 transitions. [2024-06-21 21:22:39,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 264 transitions, 2635 flow [2024-06-21 21:22:40,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 264 transitions, 2539 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:40,192 INFO L231 Difference]: Finished difference. Result has 348 places, 248 transitions, 2037 flow [2024-06-21 21:22:40,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1963, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2037, PETRI_PLACES=348, PETRI_TRANSITIONS=248} [2024-06-21 21:22:40,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-21 21:22:40,193 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 248 transitions, 2037 flow [2024-06-21 21:22:40,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:40,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:40,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:40,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-21 21:22:40,194 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:40,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -965565424, now seen corresponding path program 11 times [2024-06-21 21:22:40,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:40,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39382404] [2024-06-21 21:22:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:40,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:40,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:40,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39382404] [2024-06-21 21:22:40,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39382404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:40,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:40,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:40,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522861394] [2024-06-21 21:22:40,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:40,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:40,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:40,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:40,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:41,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:41,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 248 transitions, 2037 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:41,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:41,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:41,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:41,431 INFO L124 PetriNetUnfolderBase]: 596/1231 cut-off events. [2024-06-21 21:22:41,432 INFO L125 PetriNetUnfolderBase]: For 51834/51834 co-relation queries the response was YES. [2024-06-21 21:22:41,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 1231 events. 596/1231 cut-off events. For 51834/51834 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7805 event pairs, 141 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 5441. Up to 1063 conditions per place. [2024-06-21 21:22:41,444 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 27 changer transitions 0/265 dead transitions. [2024-06-21 21:22:41,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 265 transitions, 2599 flow [2024-06-21 21:22:41,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 21:22:41,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:22:41,445 INFO L175 Difference]: Start difference. First operand has 348 places, 248 transitions, 2037 flow. Second operand 12 states and 156 transitions. [2024-06-21 21:22:41,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 265 transitions, 2599 flow [2024-06-21 21:22:41,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 265 transitions, 2527 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:41,664 INFO L231 Difference]: Finished difference. Result has 350 places, 248 transitions, 2023 flow [2024-06-21 21:22:41,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2023, PETRI_PLACES=350, PETRI_TRANSITIONS=248} [2024-06-21 21:22:41,665 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-21 21:22:41,665 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 248 transitions, 2023 flow [2024-06-21 21:22:41,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:41,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:41,665 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:41,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-21 21:22:41,665 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:41,666 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:41,666 INFO L85 PathProgramCache]: Analyzing trace with hash 2075822066, now seen corresponding path program 2 times [2024-06-21 21:22:41,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:41,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186835139] [2024-06-21 21:22:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:41,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:42,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:42,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186835139] [2024-06-21 21:22:42,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186835139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:42,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:42,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:22:42,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308764422] [2024-06-21 21:22:42,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:42,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:22:42,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:42,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:22:42,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:22:42,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:42,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 248 transitions, 2023 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:22:42,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:42,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:42,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:43,009 INFO L124 PetriNetUnfolderBase]: 608/1262 cut-off events. [2024-06-21 21:22:43,009 INFO L125 PetriNetUnfolderBase]: For 78743/78743 co-relation queries the response was YES. [2024-06-21 21:22:43,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5799 conditions, 1262 events. 608/1262 cut-off events. For 78743/78743 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8035 event pairs, 124 based on Foata normal form. 8/1269 useless extension candidates. Maximal degree in co-relation 5652. Up to 1063 conditions per place. [2024-06-21 21:22:43,021 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 209 selfloop transitions, 45 changer transitions 9/267 dead transitions. [2024-06-21 21:22:43,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 267 transitions, 2679 flow [2024-06-21 21:22:43,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:22:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:22:43,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 169 transitions. [2024-06-21 21:22:43,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:22:43,024 INFO L175 Difference]: Start difference. First operand has 350 places, 248 transitions, 2023 flow. Second operand 13 states and 169 transitions. [2024-06-21 21:22:43,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 267 transitions, 2679 flow [2024-06-21 21:22:43,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 267 transitions, 2596 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 21:22:43,257 INFO L231 Difference]: Finished difference. Result has 351 places, 245 transitions, 2010 flow [2024-06-21 21:22:43,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2010, PETRI_PLACES=351, PETRI_TRANSITIONS=245} [2024-06-21 21:22:43,257 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-21 21:22:43,257 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 245 transitions, 2010 flow [2024-06-21 21:22:43,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:22:43,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:43,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:43,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-21 21:22:43,258 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:43,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:43,258 INFO L85 PathProgramCache]: Analyzing trace with hash 2076148496, now seen corresponding path program 3 times [2024-06-21 21:22:43,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:43,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656987899] [2024-06-21 21:22:43,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:43,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:44,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:44,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656987899] [2024-06-21 21:22:44,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656987899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:44,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:44,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:22:44,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177073247] [2024-06-21 21:22:44,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:44,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:22:44,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:44,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:22:44,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:22:44,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:44,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 245 transitions, 2010 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:22:44,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:44,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:44,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:44,704 INFO L124 PetriNetUnfolderBase]: 621/1291 cut-off events. [2024-06-21 21:22:44,704 INFO L125 PetriNetUnfolderBase]: For 104789/104789 co-relation queries the response was YES. [2024-06-21 21:22:44,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6779 conditions, 1291 events. 621/1291 cut-off events. For 104789/104789 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8224 event pairs, 130 based on Foata normal form. 6/1296 useless extension candidates. Maximal degree in co-relation 6632. Up to 1049 conditions per place. [2024-06-21 21:22:44,718 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 214 selfloop transitions, 42 changer transitions 8/268 dead transitions. [2024-06-21 21:22:44,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 268 transitions, 2920 flow [2024-06-21 21:22:44,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:22:44,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:22:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2024-06-21 21:22:44,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110576923076923 [2024-06-21 21:22:44,719 INFO L175 Difference]: Start difference. First operand has 351 places, 245 transitions, 2010 flow. Second operand 13 states and 171 transitions. [2024-06-21 21:22:44,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 268 transitions, 2920 flow [2024-06-21 21:22:45,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 268 transitions, 2822 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:22:45,106 INFO L231 Difference]: Finished difference. Result has 349 places, 241 transitions, 1962 flow [2024-06-21 21:22:45,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1962, PETRI_PLACES=349, PETRI_TRANSITIONS=241} [2024-06-21 21:22:45,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-21 21:22:45,107 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 241 transitions, 1962 flow [2024-06-21 21:22:45,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:22:45,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:45,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:45,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-21 21:22:45,108 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:45,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:45,108 INFO L85 PathProgramCache]: Analyzing trace with hash -366646690, now seen corresponding path program 12 times [2024-06-21 21:22:45,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:45,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166215518] [2024-06-21 21:22:45,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:45,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:45,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:45,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166215518] [2024-06-21 21:22:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166215518] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:45,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:45,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:45,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731374971] [2024-06-21 21:22:45,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:45,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:45,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:45,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:45,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:46,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:46,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 241 transitions, 1962 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:46,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:46,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:46,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:46,433 INFO L124 PetriNetUnfolderBase]: 609/1260 cut-off events. [2024-06-21 21:22:46,433 INFO L125 PetriNetUnfolderBase]: For 88543/88543 co-relation queries the response was YES. [2024-06-21 21:22:46,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 1260 events. 609/1260 cut-off events. For 88543/88543 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7969 event pairs, 148 based on Foata normal form. 2/1261 useless extension candidates. Maximal degree in co-relation 6447. Up to 1116 conditions per place. [2024-06-21 21:22:46,444 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 237 selfloop transitions, 23 changer transitions 0/264 dead transitions. [2024-06-21 21:22:46,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 264 transitions, 2554 flow [2024-06-21 21:22:46,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:46,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:46,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 21:22:46,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 21:22:46,445 INFO L175 Difference]: Start difference. First operand has 349 places, 241 transitions, 1962 flow. Second operand 12 states and 154 transitions. [2024-06-21 21:22:46,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 264 transitions, 2554 flow [2024-06-21 21:22:46,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 264 transitions, 2458 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-21 21:22:46,764 INFO L231 Difference]: Finished difference. Result has 343 places, 242 transitions, 1936 flow [2024-06-21 21:22:46,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1936, PETRI_PLACES=343, PETRI_TRANSITIONS=242} [2024-06-21 21:22:46,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-21 21:22:46,765 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 242 transitions, 1936 flow [2024-06-21 21:22:46,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:46,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:46,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:46,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-21 21:22:46,766 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:46,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash -19119592, now seen corresponding path program 13 times [2024-06-21 21:22:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846020967] [2024-06-21 21:22:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:47,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:47,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846020967] [2024-06-21 21:22:47,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846020967] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:47,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:47,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:47,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298954675] [2024-06-21 21:22:47,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:47,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:47,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:47,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:47,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:47,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:47,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 242 transitions, 1936 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:47,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:47,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:47,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:48,030 INFO L124 PetriNetUnfolderBase]: 620/1281 cut-off events. [2024-06-21 21:22:48,030 INFO L125 PetriNetUnfolderBase]: For 95604/95604 co-relation queries the response was YES. [2024-06-21 21:22:48,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6850 conditions, 1281 events. 620/1281 cut-off events. For 95604/95604 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8123 event pairs, 153 based on Foata normal form. 2/1282 useless extension candidates. Maximal degree in co-relation 6706. Up to 1126 conditions per place. [2024-06-21 21:22:48,043 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 28 changer transitions 0/264 dead transitions. [2024-06-21 21:22:48,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 264 transitions, 2730 flow [2024-06-21 21:22:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:48,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:48,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 21:22:48,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 21:22:48,044 INFO L175 Difference]: Start difference. First operand has 343 places, 242 transitions, 1936 flow. Second operand 12 states and 158 transitions. [2024-06-21 21:22:48,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 264 transitions, 2730 flow [2024-06-21 21:22:48,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 264 transitions, 2670 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:48,404 INFO L231 Difference]: Finished difference. Result has 345 places, 244 transitions, 1978 flow [2024-06-21 21:22:48,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1876, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1978, PETRI_PLACES=345, PETRI_TRANSITIONS=244} [2024-06-21 21:22:48,405 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-21 21:22:48,405 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 244 transitions, 1978 flow [2024-06-21 21:22:48,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:48,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:48,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:48,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-21 21:22:48,405 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:48,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:48,405 INFO L85 PathProgramCache]: Analyzing trace with hash -527754672, now seen corresponding path program 14 times [2024-06-21 21:22:48,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:48,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109426113] [2024-06-21 21:22:48,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:48,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:48,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109426113] [2024-06-21 21:22:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109426113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:49,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:49,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:49,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31567974] [2024-06-21 21:22:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:49,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:49,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:49,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:49,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 244 transitions, 1978 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:49,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:49,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:49,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:49,701 INFO L124 PetriNetUnfolderBase]: 624/1289 cut-off events. [2024-06-21 21:22:49,701 INFO L125 PetriNetUnfolderBase]: For 97740/97740 co-relation queries the response was YES. [2024-06-21 21:22:49,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6919 conditions, 1289 events. 624/1289 cut-off events. For 97740/97740 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8164 event pairs, 148 based on Foata normal form. 2/1290 useless extension candidates. Maximal degree in co-relation 6774. Up to 1104 conditions per place. [2024-06-21 21:22:49,715 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 29 changer transitions 0/266 dead transitions. [2024-06-21 21:22:49,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 266 transitions, 2762 flow [2024-06-21 21:22:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:49,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-21 21:22:49,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-21 21:22:49,717 INFO L175 Difference]: Start difference. First operand has 345 places, 244 transitions, 1978 flow. Second operand 12 states and 160 transitions. [2024-06-21 21:22:49,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 266 transitions, 2762 flow [2024-06-21 21:22:50,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 266 transitions, 2703 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-21 21:22:50,104 INFO L231 Difference]: Finished difference. Result has 349 places, 245 transitions, 2005 flow [2024-06-21 21:22:50,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1919, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2005, PETRI_PLACES=349, PETRI_TRANSITIONS=245} [2024-06-21 21:22:50,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-21 21:22:50,105 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 245 transitions, 2005 flow [2024-06-21 21:22:50,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:50,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:50,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-21 21:22:50,105 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:50,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1437943910, now seen corresponding path program 15 times [2024-06-21 21:22:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832737153] [2024-06-21 21:22:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:50,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:50,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:50,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832737153] [2024-06-21 21:22:50,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832737153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:50,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:50,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:50,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931797658] [2024-06-21 21:22:50,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:50,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:50,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:50,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:50,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:51,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:51,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 245 transitions, 2005 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:51,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:51,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:51,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:51,398 INFO L124 PetriNetUnfolderBase]: 628/1297 cut-off events. [2024-06-21 21:22:51,398 INFO L125 PetriNetUnfolderBase]: For 99724/99724 co-relation queries the response was YES. [2024-06-21 21:22:51,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6996 conditions, 1297 events. 628/1297 cut-off events. For 99724/99724 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8255 event pairs, 171 based on Foata normal form. 2/1298 useless extension candidates. Maximal degree in co-relation 6849. Up to 1177 conditions per place. [2024-06-21 21:22:51,412 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 232 selfloop transitions, 27 changer transitions 0/263 dead transitions. [2024-06-21 21:22:51,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 263 transitions, 2583 flow [2024-06-21 21:22:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:51,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:51,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 21:22:51,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 21:22:51,414 INFO L175 Difference]: Start difference. First operand has 349 places, 245 transitions, 2005 flow. Second operand 12 states and 153 transitions. [2024-06-21 21:22:51,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 263 transitions, 2583 flow [2024-06-21 21:22:51,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 263 transitions, 2505 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:51,805 INFO L231 Difference]: Finished difference. Result has 351 places, 246 transitions, 2005 flow [2024-06-21 21:22:51,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2005, PETRI_PLACES=351, PETRI_TRANSITIONS=246} [2024-06-21 21:22:51,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 320 predicate places. [2024-06-21 21:22:51,806 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 246 transitions, 2005 flow [2024-06-21 21:22:51,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:51,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:51,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:51,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-21 21:22:51,807 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:51,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:51,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1145860876, now seen corresponding path program 16 times [2024-06-21 21:22:51,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:51,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003886848] [2024-06-21 21:22:51,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:52,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:52,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003886848] [2024-06-21 21:22:52,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003886848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:52,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:52,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:52,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774609464] [2024-06-21 21:22:52,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:52,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:52,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:52,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:52,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:52,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:52,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 246 transitions, 2005 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:52,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:52,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:52,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:53,170 INFO L124 PetriNetUnfolderBase]: 648/1345 cut-off events. [2024-06-21 21:22:53,171 INFO L125 PetriNetUnfolderBase]: For 141750/141750 co-relation queries the response was YES. [2024-06-21 21:22:53,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7575 conditions, 1345 events. 648/1345 cut-off events. For 141750/141750 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8514 event pairs, 170 based on Foata normal form. 8/1352 useless extension candidates. Maximal degree in co-relation 7427. Up to 1097 conditions per place. [2024-06-21 21:22:53,184 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 234 selfloop transitions, 25 changer transitions 7/270 dead transitions. [2024-06-21 21:22:53,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 270 transitions, 2895 flow [2024-06-21 21:22:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 162 transitions. [2024-06-21 21:22:53,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-21 21:22:53,186 INFO L175 Difference]: Start difference. First operand has 351 places, 246 transitions, 2005 flow. Second operand 12 states and 162 transitions. [2024-06-21 21:22:53,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 270 transitions, 2895 flow [2024-06-21 21:22:53,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 270 transitions, 2819 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:53,682 INFO L231 Difference]: Finished difference. Result has 353 places, 243 transitions, 1959 flow [2024-06-21 21:22:53,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1959, PETRI_PLACES=353, PETRI_TRANSITIONS=243} [2024-06-21 21:22:53,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-21 21:22:53,683 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 243 transitions, 1959 flow [2024-06-21 21:22:53,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:53,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:53,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:53,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-21 21:22:53,684 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:53,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash -536261266, now seen corresponding path program 17 times [2024-06-21 21:22:53,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:53,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894577884] [2024-06-21 21:22:53,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:53,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:53,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:54,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894577884] [2024-06-21 21:22:54,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894577884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:54,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:54,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928232863] [2024-06-21 21:22:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:54,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:54,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:54,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:54,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:54,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 243 transitions, 1959 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:54,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:54,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:54,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:54,984 INFO L124 PetriNetUnfolderBase]: 634/1315 cut-off events. [2024-06-21 21:22:54,984 INFO L125 PetriNetUnfolderBase]: For 118620/118620 co-relation queries the response was YES. [2024-06-21 21:22:54,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7448 conditions, 1315 events. 634/1315 cut-off events. For 118620/118620 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8321 event pairs, 138 based on Foata normal form. 2/1316 useless extension candidates. Maximal degree in co-relation 7299. Up to 1136 conditions per place. [2024-06-21 21:22:55,031 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 26 changer transitions 0/266 dead transitions. [2024-06-21 21:22:55,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 266 transitions, 2559 flow [2024-06-21 21:22:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:55,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-21 21:22:55,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-21 21:22:55,033 INFO L175 Difference]: Start difference. First operand has 353 places, 243 transitions, 1959 flow. Second operand 12 states and 152 transitions. [2024-06-21 21:22:55,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 266 transitions, 2559 flow [2024-06-21 21:22:55,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 266 transitions, 2504 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:22:55,510 INFO L231 Difference]: Finished difference. Result has 352 places, 244 transitions, 1986 flow [2024-06-21 21:22:55,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1986, PETRI_PLACES=352, PETRI_TRANSITIONS=244} [2024-06-21 21:22:55,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-21 21:22:55,510 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 244 transitions, 1986 flow [2024-06-21 21:22:55,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:55,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:55,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:55,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-21 21:22:55,511 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:55,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:55,512 INFO L85 PathProgramCache]: Analyzing trace with hash 125130414, now seen corresponding path program 4 times [2024-06-21 21:22:55,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:55,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953529781] [2024-06-21 21:22:55,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:55,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:56,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:56,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953529781] [2024-06-21 21:22:56,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953529781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:56,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:56,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:22:56,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79252892] [2024-06-21 21:22:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:56,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:22:56,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:22:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:22:56,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:56,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 244 transitions, 1986 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:22:56,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:56,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:56,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:57,127 INFO L124 PetriNetUnfolderBase]: 624/1297 cut-off events. [2024-06-21 21:22:57,127 INFO L125 PetriNetUnfolderBase]: For 111414/111414 co-relation queries the response was YES. [2024-06-21 21:22:57,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6581 conditions, 1297 events. 624/1297 cut-off events. For 111414/111414 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8248 event pairs, 171 based on Foata normal form. 8/1304 useless extension candidates. Maximal degree in co-relation 6432. Up to 1148 conditions per place. [2024-06-21 21:22:57,140 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 228 selfloop transitions, 24 changer transitions 9/265 dead transitions. [2024-06-21 21:22:57,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 265 transitions, 2640 flow [2024-06-21 21:22:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:22:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:22:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-21 21:22:57,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-21 21:22:57,142 INFO L175 Difference]: Start difference. First operand has 352 places, 244 transitions, 1986 flow. Second operand 13 states and 165 transitions. [2024-06-21 21:22:57,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 265 transitions, 2640 flow [2024-06-21 21:22:57,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 265 transitions, 2568 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-21 21:22:57,517 INFO L231 Difference]: Finished difference. Result has 355 places, 241 transitions, 1937 flow [2024-06-21 21:22:57,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1937, PETRI_PLACES=355, PETRI_TRANSITIONS=241} [2024-06-21 21:22:57,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-21 21:22:57,517 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 241 transitions, 1937 flow [2024-06-21 21:22:57,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:22:57,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:57,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:57,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-21 21:22:57,518 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:57,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1872319900, now seen corresponding path program 18 times [2024-06-21 21:22:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:57,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555618038] [2024-06-21 21:22:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:57,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:22:58,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:22:58,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:22:58,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555618038] [2024-06-21 21:22:58,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555618038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:22:58,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:22:58,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:22:58,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812282083] [2024-06-21 21:22:58,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:22:58,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:22:58,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:22:58,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:22:58,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:22:58,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:22:58,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 241 transitions, 1937 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:58,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:22:58,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:22:58,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:22:59,027 INFO L124 PetriNetUnfolderBase]: 618/1281 cut-off events. [2024-06-21 21:22:59,028 INFO L125 PetriNetUnfolderBase]: For 95169/95169 co-relation queries the response was YES. [2024-06-21 21:22:59,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6631 conditions, 1281 events. 618/1281 cut-off events. For 95169/95169 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8120 event pairs, 144 based on Foata normal form. 2/1278 useless extension candidates. Maximal degree in co-relation 6481. Up to 1146 conditions per place. [2024-06-21 21:22:59,041 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2024-06-21 21:22:59,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 258 transitions, 2729 flow [2024-06-21 21:22:59,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:22:59,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:22:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-21 21:22:59,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-21 21:22:59,042 INFO L175 Difference]: Start difference. First operand has 355 places, 241 transitions, 1937 flow. Second operand 12 states and 153 transitions. [2024-06-21 21:22:59,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 258 transitions, 2729 flow [2024-06-21 21:22:59,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 258 transitions, 2673 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:22:59,409 INFO L231 Difference]: Finished difference. Result has 352 places, 243 transitions, 1995 flow [2024-06-21 21:22:59,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1995, PETRI_PLACES=352, PETRI_TRANSITIONS=243} [2024-06-21 21:22:59,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 321 predicate places. [2024-06-21 21:22:59,409 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 243 transitions, 1995 flow [2024-06-21 21:22:59,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:22:59,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:22:59,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:22:59,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-21 21:22:59,410 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:22:59,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:22:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1866963100, now seen corresponding path program 19 times [2024-06-21 21:22:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:22:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164305100] [2024-06-21 21:22:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:22:59,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:22:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:00,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:00,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164305100] [2024-06-21 21:23:00,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164305100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:00,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:00,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:00,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398671008] [2024-06-21 21:23:00,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:00,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:00,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:00,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:00,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:00,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:00,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 243 transitions, 1995 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:00,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:00,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:00,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:00,629 INFO L124 PetriNetUnfolderBase]: 615/1278 cut-off events. [2024-06-21 21:23:00,629 INFO L125 PetriNetUnfolderBase]: For 86037/86037 co-relation queries the response was YES. [2024-06-21 21:23:00,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6418 conditions, 1278 events. 615/1278 cut-off events. For 86037/86037 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8113 event pairs, 165 based on Foata normal form. 2/1279 useless extension candidates. Maximal degree in co-relation 6268. Up to 1131 conditions per place. [2024-06-21 21:23:00,643 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 38 changer transitions 0/258 dead transitions. [2024-06-21 21:23:00,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 258 transitions, 2539 flow [2024-06-21 21:23:00,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:00,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:23:00,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:23:00,644 INFO L175 Difference]: Start difference. First operand has 352 places, 243 transitions, 1995 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:23:00,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 258 transitions, 2539 flow [2024-06-21 21:23:00,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 258 transitions, 2454 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-21 21:23:00,976 INFO L231 Difference]: Finished difference. Result has 355 places, 243 transitions, 1992 flow [2024-06-21 21:23:00,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1910, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1992, PETRI_PLACES=355, PETRI_TRANSITIONS=243} [2024-06-21 21:23:00,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-21 21:23:00,976 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 243 transitions, 1992 flow [2024-06-21 21:23:00,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:00,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:00,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:00,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-21 21:23:00,977 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:00,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:00,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1724710300, now seen corresponding path program 20 times [2024-06-21 21:23:00,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:00,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854090050] [2024-06-21 21:23:00,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:00,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:00,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:01,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:01,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:01,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854090050] [2024-06-21 21:23:01,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854090050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:01,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:01,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:01,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535833018] [2024-06-21 21:23:01,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:01,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:01,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:01,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:01,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:01,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:01,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 243 transitions, 1992 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:01,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:01,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:01,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:02,286 INFO L124 PetriNetUnfolderBase]: 626/1299 cut-off events. [2024-06-21 21:23:02,287 INFO L125 PetriNetUnfolderBase]: For 97662/97662 co-relation queries the response was YES. [2024-06-21 21:23:02,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6776 conditions, 1299 events. 626/1299 cut-off events. For 97662/97662 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8263 event pairs, 138 based on Foata normal form. 2/1300 useless extension candidates. Maximal degree in co-relation 6625. Up to 965 conditions per place. [2024-06-21 21:23:02,300 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 213 selfloop transitions, 47 changer transitions 0/264 dead transitions. [2024-06-21 21:23:02,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 264 transitions, 2810 flow [2024-06-21 21:23:02,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:02,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:02,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 21:23:02,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 21:23:02,301 INFO L175 Difference]: Start difference. First operand has 355 places, 243 transitions, 1992 flow. Second operand 11 states and 148 transitions. [2024-06-21 21:23:02,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 264 transitions, 2810 flow [2024-06-21 21:23:02,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 264 transitions, 2732 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-21 21:23:02,717 INFO L231 Difference]: Finished difference. Result has 356 places, 245 transitions, 2076 flow [2024-06-21 21:23:02,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2076, PETRI_PLACES=356, PETRI_TRANSITIONS=245} [2024-06-21 21:23:02,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-21 21:23:02,718 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 245 transitions, 2076 flow [2024-06-21 21:23:02,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:02,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:02,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:02,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-21 21:23:02,719 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:02,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:02,719 INFO L85 PathProgramCache]: Analyzing trace with hash 867017766, now seen corresponding path program 21 times [2024-06-21 21:23:02,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:02,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262646298] [2024-06-21 21:23:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:02,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:03,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:03,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262646298] [2024-06-21 21:23:03,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262646298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:03,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:03,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:03,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960228622] [2024-06-21 21:23:03,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:03,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:03,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:03,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:03,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:03,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:03,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 245 transitions, 2076 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:03,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:03,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:03,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:04,078 INFO L124 PetriNetUnfolderBase]: 623/1294 cut-off events. [2024-06-21 21:23:04,079 INFO L125 PetriNetUnfolderBase]: For 87822/87822 co-relation queries the response was YES. [2024-06-21 21:23:04,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6612 conditions, 1294 events. 623/1294 cut-off events. For 87822/87822 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8240 event pairs, 152 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 6461. Up to 1053 conditions per place. [2024-06-21 21:23:04,092 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 214 selfloop transitions, 44 changer transitions 0/262 dead transitions. [2024-06-21 21:23:04,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 262 transitions, 2632 flow [2024-06-21 21:23:04,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:04,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:04,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 21:23:04,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 21:23:04,093 INFO L175 Difference]: Start difference. First operand has 356 places, 245 transitions, 2076 flow. Second operand 11 states and 145 transitions. [2024-06-21 21:23:04,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 262 transitions, 2632 flow [2024-06-21 21:23:04,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 262 transitions, 2531 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-21 21:23:04,457 INFO L231 Difference]: Finished difference. Result has 359 places, 245 transitions, 2071 flow [2024-06-21 21:23:04,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2071, PETRI_PLACES=359, PETRI_TRANSITIONS=245} [2024-06-21 21:23:04,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 21:23:04,458 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 245 transitions, 2071 flow [2024-06-21 21:23:04,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:04,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:04,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:04,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-21 21:23:04,458 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:04,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:04,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1512565256, now seen corresponding path program 22 times [2024-06-21 21:23:04,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:04,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383073150] [2024-06-21 21:23:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:04,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:04,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:05,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:05,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383073150] [2024-06-21 21:23:05,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383073150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:05,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:05,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:05,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005012204] [2024-06-21 21:23:05,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:05,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:05,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:05,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:05,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:05,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:05,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 245 transitions, 2071 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:05,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:05,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:05,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:05,705 INFO L124 PetriNetUnfolderBase]: 627/1302 cut-off events. [2024-06-21 21:23:05,705 INFO L125 PetriNetUnfolderBase]: For 87201/87201 co-relation queries the response was YES. [2024-06-21 21:23:05,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6652 conditions, 1302 events. 627/1302 cut-off events. For 87201/87201 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8277 event pairs, 123 based on Foata normal form. 2/1303 useless extension candidates. Maximal degree in co-relation 6500. Up to 1027 conditions per place. [2024-06-21 21:23:05,719 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 224 selfloop transitions, 37 changer transitions 0/265 dead transitions. [2024-06-21 21:23:05,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 265 transitions, 2661 flow [2024-06-21 21:23:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:05,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-21 21:23:05,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-21 21:23:05,720 INFO L175 Difference]: Start difference. First operand has 359 places, 245 transitions, 2071 flow. Second operand 11 states and 140 transitions. [2024-06-21 21:23:05,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 265 transitions, 2661 flow [2024-06-21 21:23:06,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 265 transitions, 2534 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 21:23:06,105 INFO L231 Difference]: Finished difference. Result has 357 places, 246 transitions, 2054 flow [2024-06-21 21:23:06,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2054, PETRI_PLACES=357, PETRI_TRANSITIONS=246} [2024-06-21 21:23:06,105 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-21 21:23:06,106 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 246 transitions, 2054 flow [2024-06-21 21:23:06,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:06,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:06,106 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:06,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-21 21:23:06,106 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:06,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:06,106 INFO L85 PathProgramCache]: Analyzing trace with hash 530207154, now seen corresponding path program 23 times [2024-06-21 21:23:06,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:06,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646545827] [2024-06-21 21:23:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:06,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:06,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:06,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:06,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646545827] [2024-06-21 21:23:06,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646545827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:06,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:06,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:06,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537172999] [2024-06-21 21:23:06,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:06,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:06,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:06,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:07,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:07,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 246 transitions, 2054 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:07,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:07,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:07,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:07,421 INFO L124 PetriNetUnfolderBase]: 638/1323 cut-off events. [2024-06-21 21:23:07,421 INFO L125 PetriNetUnfolderBase]: For 95616/95616 co-relation queries the response was YES. [2024-06-21 21:23:07,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 1323 events. 638/1323 cut-off events. For 95616/95616 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8408 event pairs, 182 based on Foata normal form. 2/1324 useless extension candidates. Maximal degree in co-relation 6809. Up to 1105 conditions per place. [2024-06-21 21:23:07,434 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 39 changer transitions 0/264 dead transitions. [2024-06-21 21:23:07,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 264 transitions, 2858 flow [2024-06-21 21:23:07,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:07,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:07,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-21 21:23:07,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-21 21:23:07,435 INFO L175 Difference]: Start difference. First operand has 357 places, 246 transitions, 2054 flow. Second operand 11 states and 145 transitions. [2024-06-21 21:23:07,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 264 transitions, 2858 flow [2024-06-21 21:23:07,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 264 transitions, 2746 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-21 21:23:07,817 INFO L231 Difference]: Finished difference. Result has 359 places, 248 transitions, 2086 flow [2024-06-21 21:23:07,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1960, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2086, PETRI_PLACES=359, PETRI_TRANSITIONS=248} [2024-06-21 21:23:07,818 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 21:23:07,818 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 248 transitions, 2086 flow [2024-06-21 21:23:07,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:07,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:07,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:07,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-21 21:23:07,818 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:07,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash 175746460, now seen corresponding path program 24 times [2024-06-21 21:23:07,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:07,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881975147] [2024-06-21 21:23:07,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:07,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:08,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:08,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881975147] [2024-06-21 21:23:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881975147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:08,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:08,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459689271] [2024-06-21 21:23:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:08,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:08,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:08,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:08,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 248 transitions, 2086 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:08,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:08,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:08,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:09,072 INFO L124 PetriNetUnfolderBase]: 635/1317 cut-off events. [2024-06-21 21:23:09,072 INFO L125 PetriNetUnfolderBase]: For 82234/82234 co-relation queries the response was YES. [2024-06-21 21:23:09,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6630 conditions, 1317 events. 635/1317 cut-off events. For 82234/82234 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8383 event pairs, 149 based on Foata normal form. 2/1318 useless extension candidates. Maximal degree in co-relation 6479. Up to 1098 conditions per place. [2024-06-21 21:23:09,085 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 206 selfloop transitions, 52 changer transitions 0/262 dead transitions. [2024-06-21 21:23:09,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 262 transitions, 2634 flow [2024-06-21 21:23:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:09,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:09,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 21:23:09,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:23:09,087 INFO L175 Difference]: Start difference. First operand has 359 places, 248 transitions, 2086 flow. Second operand 11 states and 143 transitions. [2024-06-21 21:23:09,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 262 transitions, 2634 flow [2024-06-21 21:23:09,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 262 transitions, 2550 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-21 21:23:09,465 INFO L231 Difference]: Finished difference. Result has 362 places, 248 transitions, 2112 flow [2024-06-21 21:23:09,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2112, PETRI_PLACES=362, PETRI_TRANSITIONS=248} [2024-06-21 21:23:09,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-21 21:23:09,466 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 248 transitions, 2112 flow [2024-06-21 21:23:09,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:09,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:09,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:09,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-21 21:23:09,466 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:09,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:09,467 INFO L85 PathProgramCache]: Analyzing trace with hash -971658744, now seen corresponding path program 25 times [2024-06-21 21:23:09,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:09,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14524964] [2024-06-21 21:23:09,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:09,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:10,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:10,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14524964] [2024-06-21 21:23:10,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14524964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:10,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:10,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:10,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433433192] [2024-06-21 21:23:10,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:10,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:10,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:10,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:10,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:10,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:10,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 248 transitions, 2112 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:10,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:10,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:10,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:10,705 INFO L124 PetriNetUnfolderBase]: 646/1339 cut-off events. [2024-06-21 21:23:10,705 INFO L125 PetriNetUnfolderBase]: For 91518/91518 co-relation queries the response was YES. [2024-06-21 21:23:10,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6985 conditions, 1339 events. 646/1339 cut-off events. For 91518/91518 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8528 event pairs, 182 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 6833. Up to 969 conditions per place. [2024-06-21 21:23:10,719 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 45 changer transitions 0/267 dead transitions. [2024-06-21 21:23:10,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 267 transitions, 2912 flow [2024-06-21 21:23:10,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:10,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 21:23:10,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 21:23:10,720 INFO L175 Difference]: Start difference. First operand has 362 places, 248 transitions, 2112 flow. Second operand 11 states and 146 transitions. [2024-06-21 21:23:10,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 267 transitions, 2912 flow [2024-06-21 21:23:11,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 267 transitions, 2798 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:11,121 INFO L231 Difference]: Finished difference. Result has 362 places, 250 transitions, 2142 flow [2024-06-21 21:23:11,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2142, PETRI_PLACES=362, PETRI_TRANSITIONS=250} [2024-06-21 21:23:11,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-21 21:23:11,122 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 250 transitions, 2142 flow [2024-06-21 21:23:11,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:11,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:11,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:11,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-21 21:23:11,124 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:11,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:11,124 INFO L85 PathProgramCache]: Analyzing trace with hash 201411080, now seen corresponding path program 26 times [2024-06-21 21:23:11,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:11,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940475945] [2024-06-21 21:23:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:11,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:11,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:11,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:11,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:11,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940475945] [2024-06-21 21:23:11,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940475945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:11,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:11,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:11,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805201635] [2024-06-21 21:23:11,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:11,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:11,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:11,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:11,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:11,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:11,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 250 transitions, 2142 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:11,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:11,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:11,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:12,269 INFO L124 PetriNetUnfolderBase]: 650/1347 cut-off events. [2024-06-21 21:23:12,270 INFO L125 PetriNetUnfolderBase]: For 91759/91759 co-relation queries the response was YES. [2024-06-21 21:23:12,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7066 conditions, 1347 events. 650/1347 cut-off events. For 91759/91759 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8601 event pairs, 192 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 6914. Up to 1176 conditions per place. [2024-06-21 21:23:12,284 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 39 changer transitions 0/265 dead transitions. [2024-06-21 21:23:12,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 265 transitions, 2720 flow [2024-06-21 21:23:12,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:12,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:12,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:23:12,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:23:12,285 INFO L175 Difference]: Start difference. First operand has 362 places, 250 transitions, 2142 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:23:12,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 265 transitions, 2720 flow [2024-06-21 21:23:12,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 265 transitions, 2640 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-21 21:23:12,690 INFO L231 Difference]: Finished difference. Result has 365 places, 251 transitions, 2172 flow [2024-06-21 21:23:12,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2172, PETRI_PLACES=365, PETRI_TRANSITIONS=251} [2024-06-21 21:23:12,690 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-21 21:23:12,691 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 251 transitions, 2172 flow [2024-06-21 21:23:12,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:12,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:12,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:12,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-21 21:23:12,691 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:12,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1726410022, now seen corresponding path program 27 times [2024-06-21 21:23:12,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:12,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989115257] [2024-06-21 21:23:12,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:12,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:13,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:13,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989115257] [2024-06-21 21:23:13,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989115257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:13,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:13,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:13,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043390035] [2024-06-21 21:23:13,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:13,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:13,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:13,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:13,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:13,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:13,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 251 transitions, 2172 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:13,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:13,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:13,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:13,868 INFO L124 PetriNetUnfolderBase]: 654/1355 cut-off events. [2024-06-21 21:23:13,868 INFO L125 PetriNetUnfolderBase]: For 91553/91553 co-relation queries the response was YES. [2024-06-21 21:23:13,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7119 conditions, 1355 events. 654/1355 cut-off events. For 91553/91553 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8655 event pairs, 194 based on Foata normal form. 2/1356 useless extension candidates. Maximal degree in co-relation 6966. Up to 1184 conditions per place. [2024-06-21 21:23:13,884 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 37 changer transitions 0/266 dead transitions. [2024-06-21 21:23:13,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 266 transitions, 2750 flow [2024-06-21 21:23:13,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:13,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:13,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-21 21:23:13,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-21 21:23:13,885 INFO L175 Difference]: Start difference. First operand has 365 places, 251 transitions, 2172 flow. Second operand 11 states and 141 transitions. [2024-06-21 21:23:13,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 266 transitions, 2750 flow [2024-06-21 21:23:14,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 266 transitions, 2658 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-21 21:23:14,288 INFO L231 Difference]: Finished difference. Result has 366 places, 252 transitions, 2184 flow [2024-06-21 21:23:14,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2184, PETRI_PLACES=366, PETRI_TRANSITIONS=252} [2024-06-21 21:23:14,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-21 21:23:14,288 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 252 transitions, 2184 flow [2024-06-21 21:23:14,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:14,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:14,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:14,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-21 21:23:14,289 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:14,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:14,289 INFO L85 PathProgramCache]: Analyzing trace with hash 248420548, now seen corresponding path program 28 times [2024-06-21 21:23:14,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:14,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402723874] [2024-06-21 21:23:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:14,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:15,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:15,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402723874] [2024-06-21 21:23:15,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402723874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:15,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:15,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:15,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962112278] [2024-06-21 21:23:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:15,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:15,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:15,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:15,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 252 transitions, 2184 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:15,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:15,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:15,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:15,503 INFO L124 PetriNetUnfolderBase]: 651/1350 cut-off events. [2024-06-21 21:23:15,504 INFO L125 PetriNetUnfolderBase]: For 82347/82347 co-relation queries the response was YES. [2024-06-21 21:23:15,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6881 conditions, 1350 events. 651/1350 cut-off events. For 82347/82347 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 8648 event pairs, 189 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 6728. Up to 1107 conditions per place. [2024-06-21 21:23:15,518 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 222 selfloop transitions, 41 changer transitions 0/267 dead transitions. [2024-06-21 21:23:15,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 267 transitions, 2744 flow [2024-06-21 21:23:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:15,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 21:23:15,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 21:23:15,519 INFO L175 Difference]: Start difference. First operand has 366 places, 252 transitions, 2184 flow. Second operand 11 states and 144 transitions. [2024-06-21 21:23:15,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 267 transitions, 2744 flow [2024-06-21 21:23:15,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 267 transitions, 2642 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-21 21:23:15,907 INFO L231 Difference]: Finished difference. Result has 367 places, 252 transitions, 2170 flow [2024-06-21 21:23:15,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2170, PETRI_PLACES=367, PETRI_TRANSITIONS=252} [2024-06-21 21:23:15,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-21 21:23:15,916 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 252 transitions, 2170 flow [2024-06-21 21:23:15,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:15,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:15,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:15,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-21 21:23:15,917 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:15,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:15,917 INFO L85 PathProgramCache]: Analyzing trace with hash 872739622, now seen corresponding path program 5 times [2024-06-21 21:23:15,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:15,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007161805] [2024-06-21 21:23:15,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:15,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:16,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:16,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007161805] [2024-06-21 21:23:16,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007161805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:16,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:16,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:16,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48451047] [2024-06-21 21:23:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:16,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:16,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:16,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:16,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:16,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:16,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 252 transitions, 2170 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:16,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:16,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:16,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:17,297 INFO L124 PetriNetUnfolderBase]: 663/1382 cut-off events. [2024-06-21 21:23:17,298 INFO L125 PetriNetUnfolderBase]: For 109608/109608 co-relation queries the response was YES. [2024-06-21 21:23:17,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7081 conditions, 1382 events. 663/1382 cut-off events. For 109608/109608 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 8917 event pairs, 193 based on Foata normal form. 8/1389 useless extension candidates. Maximal degree in co-relation 6928. Up to 1208 conditions per place. [2024-06-21 21:23:17,312 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 223 selfloop transitions, 35 changer transitions 9/271 dead transitions. [2024-06-21 21:23:17,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 271 transitions, 2830 flow [2024-06-21 21:23:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 21:23:17,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 21:23:17,314 INFO L175 Difference]: Start difference. First operand has 367 places, 252 transitions, 2170 flow. Second operand 12 states and 154 transitions. [2024-06-21 21:23:17,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 271 transitions, 2830 flow [2024-06-21 21:23:17,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 271 transitions, 2700 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:23:17,715 INFO L231 Difference]: Finished difference. Result has 367 places, 249 transitions, 2096 flow [2024-06-21 21:23:17,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2040, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2096, PETRI_PLACES=367, PETRI_TRANSITIONS=249} [2024-06-21 21:23:17,716 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 336 predicate places. [2024-06-21 21:23:17,716 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 249 transitions, 2096 flow [2024-06-21 21:23:17,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:17,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:17,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:17,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-21 21:23:17,717 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:17,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1597581800, now seen corresponding path program 6 times [2024-06-21 21:23:17,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:17,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615205158] [2024-06-21 21:23:17,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:17,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:17,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:18,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:18,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:18,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615205158] [2024-06-21 21:23:18,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615205158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:18,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:18,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:18,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805172922] [2024-06-21 21:23:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:18,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:18,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:18,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:18,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 249 transitions, 2096 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:18,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:18,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:18,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:19,196 INFO L124 PetriNetUnfolderBase]: 676/1413 cut-off events. [2024-06-21 21:23:19,196 INFO L125 PetriNetUnfolderBase]: For 132344/132344 co-relation queries the response was YES. [2024-06-21 21:23:19,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7985 conditions, 1413 events. 676/1413 cut-off events. For 132344/132344 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9109 event pairs, 209 based on Foata normal form. 6/1418 useless extension candidates. Maximal degree in co-relation 7833. Up to 1180 conditions per place. [2024-06-21 21:23:19,210 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 36 changer transitions 6/270 dead transitions. [2024-06-21 21:23:19,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 270 transitions, 3002 flow [2024-06-21 21:23:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-21 21:23:19,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2024-06-21 21:23:19,211 INFO L175 Difference]: Start difference. First operand has 367 places, 249 transitions, 2096 flow. Second operand 12 states and 157 transitions. [2024-06-21 21:23:19,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 270 transitions, 3002 flow [2024-06-21 21:23:19,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 270 transitions, 2914 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:19,782 INFO L231 Difference]: Finished difference. Result has 365 places, 247 transitions, 2082 flow [2024-06-21 21:23:19,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2018, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2082, PETRI_PLACES=365, PETRI_TRANSITIONS=247} [2024-06-21 21:23:19,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-21 21:23:19,782 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 247 transitions, 2082 flow [2024-06-21 21:23:19,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:19,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:19,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:19,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-21 21:23:19,783 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:19,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:19,783 INFO L85 PathProgramCache]: Analyzing trace with hash 597776896, now seen corresponding path program 7 times [2024-06-21 21:23:19,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:19,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243455479] [2024-06-21 21:23:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:19,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:20,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:20,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243455479] [2024-06-21 21:23:20,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243455479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:20,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:20,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:20,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594880447] [2024-06-21 21:23:20,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:20,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:20,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:20,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:20,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 247 transitions, 2082 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:20,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:20,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:20,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:21,240 INFO L124 PetriNetUnfolderBase]: 652/1360 cut-off events. [2024-06-21 21:23:21,241 INFO L125 PetriNetUnfolderBase]: For 105239/105239 co-relation queries the response was YES. [2024-06-21 21:23:21,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6874 conditions, 1360 events. 652/1360 cut-off events. For 105239/105239 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8703 event pairs, 165 based on Foata normal form. 8/1367 useless extension candidates. Maximal degree in co-relation 6723. Up to 1131 conditions per place. [2024-06-21 21:23:21,255 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 194 selfloop transitions, 54 changer transitions 12/264 dead transitions. [2024-06-21 21:23:21,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 264 transitions, 2718 flow [2024-06-21 21:23:21,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:21,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-21 21:23:21,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-21 21:23:21,256 INFO L175 Difference]: Start difference. First operand has 365 places, 247 transitions, 2082 flow. Second operand 12 states and 154 transitions. [2024-06-21 21:23:21,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 264 transitions, 2718 flow [2024-06-21 21:23:21,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 264 transitions, 2644 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:21,656 INFO L231 Difference]: Finished difference. Result has 364 places, 242 transitions, 2086 flow [2024-06-21 21:23:21,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2086, PETRI_PLACES=364, PETRI_TRANSITIONS=242} [2024-06-21 21:23:21,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 21:23:21,656 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 242 transitions, 2086 flow [2024-06-21 21:23:21,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:21,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:21,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:21,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-21 21:23:21,657 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:21,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:21,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1556852886, now seen corresponding path program 29 times [2024-06-21 21:23:21,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:21,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978326941] [2024-06-21 21:23:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:22,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:22,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978326941] [2024-06-21 21:23:22,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978326941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:22,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:22,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:22,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668588024] [2024-06-21 21:23:22,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:22,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:22,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:22,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:22,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:22,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 242 transitions, 2086 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:22,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:22,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:22,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:22,908 INFO L124 PetriNetUnfolderBase]: 637/1324 cut-off events. [2024-06-21 21:23:22,909 INFO L125 PetriNetUnfolderBase]: For 78926/78926 co-relation queries the response was YES. [2024-06-21 21:23:22,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6689 conditions, 1324 events. 637/1324 cut-off events. For 78926/78926 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 8445 event pairs, 200 based on Foata normal form. 2/1323 useless extension candidates. Maximal degree in co-relation 6539. Up to 1102 conditions per place. [2024-06-21 21:23:22,922 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 192 selfloop transitions, 59 changer transitions 0/255 dead transitions. [2024-06-21 21:23:22,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 255 transitions, 2636 flow [2024-06-21 21:23:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:22,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:22,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 21:23:22,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:23:22,924 INFO L175 Difference]: Start difference. First operand has 364 places, 242 transitions, 2086 flow. Second operand 11 states and 143 transitions. [2024-06-21 21:23:22,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 255 transitions, 2636 flow [2024-06-21 21:23:23,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 255 transitions, 2506 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-21 21:23:23,278 INFO L231 Difference]: Finished difference. Result has 356 places, 243 transitions, 2102 flow [2024-06-21 21:23:23,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1958, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2102, PETRI_PLACES=356, PETRI_TRANSITIONS=243} [2024-06-21 21:23:23,279 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-21 21:23:23,279 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 243 transitions, 2102 flow [2024-06-21 21:23:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:23,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:23,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:23,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-21 21:23:23,279 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:23,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1040670442, now seen corresponding path program 30 times [2024-06-21 21:23:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:23,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311953643] [2024-06-21 21:23:23,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:23,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:24,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:24,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311953643] [2024-06-21 21:23:24,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311953643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:24,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:24,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:24,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572883145] [2024-06-21 21:23:24,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:24,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:24,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:24,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:24,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:24,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:24,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 243 transitions, 2102 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:24,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:24,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:24,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:24,671 INFO L124 PetriNetUnfolderBase]: 641/1332 cut-off events. [2024-06-21 21:23:24,671 INFO L125 PetriNetUnfolderBase]: For 74392/74392 co-relation queries the response was YES. [2024-06-21 21:23:24,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6664 conditions, 1332 events. 641/1332 cut-off events. For 74392/74392 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8518 event pairs, 202 based on Foata normal form. 2/1331 useless extension candidates. Maximal degree in co-relation 6517. Up to 1110 conditions per place. [2024-06-21 21:23:24,685 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 50 changer transitions 0/256 dead transitions. [2024-06-21 21:23:24,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 256 transitions, 2654 flow [2024-06-21 21:23:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 21:23:24,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 21:23:24,686 INFO L175 Difference]: Start difference. First operand has 356 places, 243 transitions, 2102 flow. Second operand 11 states and 146 transitions. [2024-06-21 21:23:24,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 256 transitions, 2654 flow [2024-06-21 21:23:25,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 256 transitions, 2520 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-21 21:23:25,041 INFO L231 Difference]: Finished difference. Result has 358 places, 244 transitions, 2096 flow [2024-06-21 21:23:25,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2096, PETRI_PLACES=358, PETRI_TRANSITIONS=244} [2024-06-21 21:23:25,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-21 21:23:25,041 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 244 transitions, 2096 flow [2024-06-21 21:23:25,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:25,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:25,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:25,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-21 21:23:25,042 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:25,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1234609852, now seen corresponding path program 31 times [2024-06-21 21:23:25,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:25,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657272741] [2024-06-21 21:23:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:25,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:25,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:25,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:25,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657272741] [2024-06-21 21:23:25,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657272741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:25,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:25,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:25,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435468544] [2024-06-21 21:23:25,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:25,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:25,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:25,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:25,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:25,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:25,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 244 transitions, 2096 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:25,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:25,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:25,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:26,360 INFO L124 PetriNetUnfolderBase]: 645/1344 cut-off events. [2024-06-21 21:23:26,360 INFO L125 PetriNetUnfolderBase]: For 76087/76087 co-relation queries the response was YES. [2024-06-21 21:23:26,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6705 conditions, 1344 events. 645/1344 cut-off events. For 76087/76087 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8592 event pairs, 206 based on Foata normal form. 2/1343 useless extension candidates. Maximal degree in co-relation 6557. Up to 1118 conditions per place. [2024-06-21 21:23:26,374 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 202 selfloop transitions, 51 changer transitions 0/257 dead transitions. [2024-06-21 21:23:26,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 257 transitions, 2652 flow [2024-06-21 21:23:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:26,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:26,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-21 21:23:26,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:23:26,376 INFO L175 Difference]: Start difference. First operand has 358 places, 244 transitions, 2096 flow. Second operand 11 states and 143 transitions. [2024-06-21 21:23:26,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 257 transitions, 2652 flow [2024-06-21 21:23:26,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 257 transitions, 2534 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-21 21:23:26,700 INFO L231 Difference]: Finished difference. Result has 360 places, 245 transitions, 2110 flow [2024-06-21 21:23:26,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2110, PETRI_PLACES=360, PETRI_TRANSITIONS=245} [2024-06-21 21:23:26,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-21 21:23:26,701 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 245 transitions, 2110 flow [2024-06-21 21:23:26,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:26,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:26,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:26,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-21 21:23:26,702 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:26,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:26,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1997723844, now seen corresponding path program 32 times [2024-06-21 21:23:26,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:26,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038977161] [2024-06-21 21:23:26,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:26,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:27,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:27,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038977161] [2024-06-21 21:23:27,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038977161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:27,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:27,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367608173] [2024-06-21 21:23:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:27,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:27,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:27,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:27,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 245 transitions, 2110 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:27,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:27,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:27,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:27,913 INFO L124 PetriNetUnfolderBase]: 649/1352 cut-off events. [2024-06-21 21:23:27,914 INFO L125 PetriNetUnfolderBase]: For 77863/77863 co-relation queries the response was YES. [2024-06-21 21:23:27,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6762 conditions, 1352 events. 649/1352 cut-off events. For 77863/77863 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8644 event pairs, 206 based on Foata normal form. 2/1351 useless extension candidates. Maximal degree in co-relation 6613. Up to 1076 conditions per place. [2024-06-21 21:23:27,927 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 201 selfloop transitions, 54 changer transitions 0/259 dead transitions. [2024-06-21 21:23:27,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 259 transitions, 2674 flow [2024-06-21 21:23:27,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:27,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:27,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-21 21:23:27,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-21 21:23:27,928 INFO L175 Difference]: Start difference. First operand has 360 places, 245 transitions, 2110 flow. Second operand 11 states and 146 transitions. [2024-06-21 21:23:27,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 259 transitions, 2674 flow [2024-06-21 21:23:28,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 259 transitions, 2552 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-21 21:23:28,273 INFO L231 Difference]: Finished difference. Result has 362 places, 246 transitions, 2128 flow [2024-06-21 21:23:28,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2128, PETRI_PLACES=362, PETRI_TRANSITIONS=246} [2024-06-21 21:23:28,274 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-21 21:23:28,274 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 246 transitions, 2128 flow [2024-06-21 21:23:28,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:28,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:28,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:28,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-21 21:23:28,274 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:28,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:28,275 INFO L85 PathProgramCache]: Analyzing trace with hash -221224358, now seen corresponding path program 33 times [2024-06-21 21:23:28,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:28,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070369961] [2024-06-21 21:23:28,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:28,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:28,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:29,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:29,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070369961] [2024-06-21 21:23:29,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070369961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:29,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:29,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:29,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41172756] [2024-06-21 21:23:29,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:29,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:29,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:29,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:29,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:29,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:29,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 246 transitions, 2128 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:29,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:29,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:29,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:29,613 INFO L124 PetriNetUnfolderBase]: 653/1360 cut-off events. [2024-06-21 21:23:29,614 INFO L125 PetriNetUnfolderBase]: For 79649/79649 co-relation queries the response was YES. [2024-06-21 21:23:29,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6831 conditions, 1360 events. 653/1360 cut-off events. For 79649/79649 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8721 event pairs, 210 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 6681. Up to 1134 conditions per place. [2024-06-21 21:23:29,630 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 46 changer transitions 0/259 dead transitions. [2024-06-21 21:23:29,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 259 transitions, 2692 flow [2024-06-21 21:23:29,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:29,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 21:23:29,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 21:23:29,631 INFO L175 Difference]: Start difference. First operand has 362 places, 246 transitions, 2128 flow. Second operand 11 states and 147 transitions. [2024-06-21 21:23:29,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 259 transitions, 2692 flow [2024-06-21 21:23:29,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 259 transitions, 2562 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-21 21:23:29,965 INFO L231 Difference]: Finished difference. Result has 364 places, 247 transitions, 2124 flow [2024-06-21 21:23:29,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2124, PETRI_PLACES=364, PETRI_TRANSITIONS=247} [2024-06-21 21:23:29,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-21 21:23:29,966 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 247 transitions, 2124 flow [2024-06-21 21:23:29,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:29,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:29,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:29,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-21 21:23:29,966 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:29,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:29,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1580015710, now seen corresponding path program 34 times [2024-06-21 21:23:29,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:29,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155049101] [2024-06-21 21:23:29,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:29,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:30,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:30,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155049101] [2024-06-21 21:23:30,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155049101] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:30,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:30,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:30,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932408489] [2024-06-21 21:23:30,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:30,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:30,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:30,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:30,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:30,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:30,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 247 transitions, 2124 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:30,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:30,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:30,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:31,205 INFO L124 PetriNetUnfolderBase]: 664/1381 cut-off events. [2024-06-21 21:23:31,206 INFO L125 PetriNetUnfolderBase]: For 90761/90761 co-relation queries the response was YES. [2024-06-21 21:23:31,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7162 conditions, 1381 events. 664/1381 cut-off events. For 90761/90761 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8883 event pairs, 213 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 7011. Up to 1116 conditions per place. [2024-06-21 21:23:31,220 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 48 changer transitions 0/263 dead transitions. [2024-06-21 21:23:31,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 263 transitions, 2922 flow [2024-06-21 21:23:31,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:31,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-21 21:23:31,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-21 21:23:31,221 INFO L175 Difference]: Start difference. First operand has 364 places, 247 transitions, 2124 flow. Second operand 11 states and 151 transitions. [2024-06-21 21:23:31,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 263 transitions, 2922 flow [2024-06-21 21:23:31,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 263 transitions, 2806 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-21 21:23:31,576 INFO L231 Difference]: Finished difference. Result has 366 places, 249 transitions, 2170 flow [2024-06-21 21:23:31,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2170, PETRI_PLACES=366, PETRI_TRANSITIONS=249} [2024-06-21 21:23:31,577 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-21 21:23:31,577 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 249 transitions, 2170 flow [2024-06-21 21:23:31,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:31,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:31,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:31,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-21 21:23:31,577 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:31,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:31,578 INFO L85 PathProgramCache]: Analyzing trace with hash -21922568, now seen corresponding path program 35 times [2024-06-21 21:23:31,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:31,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501622509] [2024-06-21 21:23:31,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:31,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:32,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:32,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501622509] [2024-06-21 21:23:32,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501622509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:32,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:32,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160609982] [2024-06-21 21:23:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:32,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:32,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:32,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:32,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 249 transitions, 2170 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:32,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:32,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:32,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:32,810 INFO L124 PetriNetUnfolderBase]: 661/1372 cut-off events. [2024-06-21 21:23:32,810 INFO L125 PetriNetUnfolderBase]: For 83353/83353 co-relation queries the response was YES. [2024-06-21 21:23:32,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6919 conditions, 1372 events. 661/1372 cut-off events. For 83353/83353 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8806 event pairs, 212 based on Foata normal form. 2/1371 useless extension candidates. Maximal degree in co-relation 6767. Up to 1150 conditions per place. [2024-06-21 21:23:32,824 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 47 changer transitions 0/261 dead transitions. [2024-06-21 21:23:32,824 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 261 transitions, 2710 flow [2024-06-21 21:23:32,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:32,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:32,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 21:23:32,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 21:23:32,825 INFO L175 Difference]: Start difference. First operand has 366 places, 249 transitions, 2170 flow. Second operand 11 states and 147 transitions. [2024-06-21 21:23:32,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 261 transitions, 2710 flow [2024-06-21 21:23:33,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 261 transitions, 2599 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-21 21:23:33,174 INFO L231 Difference]: Finished difference. Result has 370 places, 249 transitions, 2157 flow [2024-06-21 21:23:33,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2157, PETRI_PLACES=370, PETRI_TRANSITIONS=249} [2024-06-21 21:23:33,175 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 339 predicate places. [2024-06-21 21:23:33,175 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 249 transitions, 2157 flow [2024-06-21 21:23:33,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:33,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:33,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:33,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-21 21:23:33,176 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:33,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1528646152, now seen corresponding path program 36 times [2024-06-21 21:23:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:33,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510515507] [2024-06-21 21:23:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:33,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:33,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:33,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510515507] [2024-06-21 21:23:33,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510515507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:33,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:33,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:33,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032326219] [2024-06-21 21:23:33,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:33,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:33,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:33,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:33,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:34,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:34,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 249 transitions, 2157 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:34,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:34,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:34,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:34,469 INFO L124 PetriNetUnfolderBase]: 665/1384 cut-off events. [2024-06-21 21:23:34,469 INFO L125 PetriNetUnfolderBase]: For 84631/84631 co-relation queries the response was YES. [2024-06-21 21:23:34,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 1384 events. 665/1384 cut-off events. For 84631/84631 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8922 event pairs, 216 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 6829. Up to 1158 conditions per place. [2024-06-21 21:23:34,484 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 209 selfloop transitions, 49 changer transitions 0/262 dead transitions. [2024-06-21 21:23:34,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 262 transitions, 2731 flow [2024-06-21 21:23:34,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:34,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:34,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-21 21:23:34,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-21 21:23:34,485 INFO L175 Difference]: Start difference. First operand has 370 places, 249 transitions, 2157 flow. Second operand 11 states and 144 transitions. [2024-06-21 21:23:34,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 262 transitions, 2731 flow [2024-06-21 21:23:34,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 262 transitions, 2631 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-21 21:23:34,879 INFO L231 Difference]: Finished difference. Result has 371 places, 250 transitions, 2193 flow [2024-06-21 21:23:34,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2193, PETRI_PLACES=371, PETRI_TRANSITIONS=250} [2024-06-21 21:23:34,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 340 predicate places. [2024-06-21 21:23:34,879 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 250 transitions, 2193 flow [2024-06-21 21:23:34,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:34,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:34,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:34,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-21 21:23:34,880 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:34,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:34,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1384611472, now seen corresponding path program 37 times [2024-06-21 21:23:34,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:34,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817926170] [2024-06-21 21:23:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:34,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:35,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:35,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817926170] [2024-06-21 21:23:35,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817926170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:35,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:35,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:35,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983287297] [2024-06-21 21:23:35,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:35,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:35,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:35,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:35,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:35,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:35,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 250 transitions, 2193 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:35,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:35,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:35,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:36,128 INFO L124 PetriNetUnfolderBase]: 669/1392 cut-off events. [2024-06-21 21:23:36,128 INFO L125 PetriNetUnfolderBase]: For 86923/86923 co-relation queries the response was YES. [2024-06-21 21:23:36,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7088 conditions, 1392 events. 669/1392 cut-off events. For 86923/86923 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8972 event pairs, 216 based on Foata normal form. 2/1391 useless extension candidates. Maximal degree in co-relation 6933. Up to 1144 conditions per place. [2024-06-21 21:23:36,143 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 210 selfloop transitions, 50 changer transitions 0/264 dead transitions. [2024-06-21 21:23:36,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 264 transitions, 2775 flow [2024-06-21 21:23:36,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:36,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:36,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-21 21:23:36,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-21 21:23:36,144 INFO L175 Difference]: Start difference. First operand has 371 places, 250 transitions, 2193 flow. Second operand 11 states and 147 transitions. [2024-06-21 21:23:36,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 264 transitions, 2775 flow [2024-06-21 21:23:36,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 264 transitions, 2649 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-21 21:23:36,516 INFO L231 Difference]: Finished difference. Result has 373 places, 251 transitions, 2207 flow [2024-06-21 21:23:36,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2207, PETRI_PLACES=373, PETRI_TRANSITIONS=251} [2024-06-21 21:23:36,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-21 21:23:36,517 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 251 transitions, 2207 flow [2024-06-21 21:23:36,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:36,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:36,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:36,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-21 21:23:36,517 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:36,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:36,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1381036552, now seen corresponding path program 38 times [2024-06-21 21:23:36,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:36,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182778930] [2024-06-21 21:23:36,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:36,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:37,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:37,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:37,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182778930] [2024-06-21 21:23:37,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182778930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:37,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:37,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-21 21:23:37,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643149973] [2024-06-21 21:23:37,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:37,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-21 21:23:37,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:37,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-21 21:23:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-21 21:23:37,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:37,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 251 transitions, 2207 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:37,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:37,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:37,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:37,816 INFO L124 PetriNetUnfolderBase]: 666/1387 cut-off events. [2024-06-21 21:23:37,816 INFO L125 PetriNetUnfolderBase]: For 78573/78573 co-relation queries the response was YES. [2024-06-21 21:23:37,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6823 conditions, 1387 events. 666/1387 cut-off events. For 78573/78573 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8950 event pairs, 213 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 6667. Up to 995 conditions per place. [2024-06-21 21:23:37,832 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 203 selfloop transitions, 58 changer transitions 0/265 dead transitions. [2024-06-21 21:23:37,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 265 transitions, 2759 flow [2024-06-21 21:23:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-21 21:23:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-21 21:23:37,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-21 21:23:37,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-21 21:23:37,833 INFO L175 Difference]: Start difference. First operand has 373 places, 251 transitions, 2207 flow. Second operand 11 states and 148 transitions. [2024-06-21 21:23:37,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 265 transitions, 2759 flow [2024-06-21 21:23:38,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 265 transitions, 2629 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-21 21:23:38,185 INFO L231 Difference]: Finished difference. Result has 375 places, 251 transitions, 2197 flow [2024-06-21 21:23:38,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2197, PETRI_PLACES=375, PETRI_TRANSITIONS=251} [2024-06-21 21:23:38,186 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 344 predicate places. [2024-06-21 21:23:38,186 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 251 transitions, 2197 flow [2024-06-21 21:23:38,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 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) [2024-06-21 21:23:38,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:38,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:38,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-21 21:23:38,187 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:38,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1801597538, now seen corresponding path program 8 times [2024-06-21 21:23:38,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:38,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262189217] [2024-06-21 21:23:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:38,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:39,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:39,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:39,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262189217] [2024-06-21 21:23:39,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262189217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:39,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:39,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:39,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215139121] [2024-06-21 21:23:39,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:39,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:39,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:39,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:39,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:39,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:39,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 251 transitions, 2197 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:39,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:39,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:39,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:39,527 INFO L124 PetriNetUnfolderBase]: 696/1451 cut-off events. [2024-06-21 21:23:39,527 INFO L125 PetriNetUnfolderBase]: For 134696/134696 co-relation queries the response was YES. [2024-06-21 21:23:39,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8042 conditions, 1451 events. 696/1451 cut-off events. For 134696/134696 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 9406 event pairs, 196 based on Foata normal form. 6/1451 useless extension candidates. Maximal degree in co-relation 7885. Up to 1106 conditions per place. [2024-06-21 21:23:39,542 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 67 changer transitions 6/270 dead transitions. [2024-06-21 21:23:39,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 270 transitions, 3083 flow [2024-06-21 21:23:39,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:39,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-06-21 21:23:39,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4244791666666667 [2024-06-21 21:23:39,543 INFO L175 Difference]: Start difference. First operand has 375 places, 251 transitions, 2197 flow. Second operand 12 states and 163 transitions. [2024-06-21 21:23:39,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 270 transitions, 3083 flow [2024-06-21 21:23:40,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 270 transitions, 2788 flow, removed 17 selfloop flow, removed 13 redundant places. [2024-06-21 21:23:40,117 INFO L231 Difference]: Finished difference. Result has 374 places, 249 transitions, 2028 flow [2024-06-21 21:23:40,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2028, PETRI_PLACES=374, PETRI_TRANSITIONS=249} [2024-06-21 21:23:40,117 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 343 predicate places. [2024-06-21 21:23:40,117 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 249 transitions, 2028 flow [2024-06-21 21:23:40,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:40,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:40,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:40,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-21 21:23:40,118 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:40,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:40,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1801271108, now seen corresponding path program 9 times [2024-06-21 21:23:40,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:40,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505547272] [2024-06-21 21:23:40,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:40,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:40,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:40,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505547272] [2024-06-21 21:23:40,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505547272] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:40,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:40,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:40,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433902802] [2024-06-21 21:23:40,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:40,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:40,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:40,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:40,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:41,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:41,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 249 transitions, 2028 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:41,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:41,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:41,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:41,516 INFO L124 PetriNetUnfolderBase]: 672/1403 cut-off events. [2024-06-21 21:23:41,516 INFO L125 PetriNetUnfolderBase]: For 110889/110889 co-relation queries the response was YES. [2024-06-21 21:23:41,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6588 conditions, 1403 events. 672/1403 cut-off events. For 110889/110889 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9097 event pairs, 190 based on Foata normal form. 8/1405 useless extension candidates. Maximal degree in co-relation 6433. Up to 1106 conditions per place. [2024-06-21 21:23:41,531 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 63 changer transitions 13/264 dead transitions. [2024-06-21 21:23:41,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 264 transitions, 2648 flow [2024-06-21 21:23:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:41,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:41,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 21:23:41,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 21:23:41,532 INFO L175 Difference]: Start difference. First operand has 374 places, 249 transitions, 2028 flow. Second operand 12 states and 158 transitions. [2024-06-21 21:23:41,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 264 transitions, 2648 flow [2024-06-21 21:23:41,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 264 transitions, 2510 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:41,890 INFO L231 Difference]: Finished difference. Result has 373 places, 244 transitions, 1990 flow [2024-06-21 21:23:41,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1990, PETRI_PLACES=373, PETRI_TRANSITIONS=244} [2024-06-21 21:23:41,890 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 342 predicate places. [2024-06-21 21:23:41,891 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 244 transitions, 1990 flow [2024-06-21 21:23:41,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:41,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:41,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:41,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-21 21:23:41,891 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:41,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:41,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1474939014, now seen corresponding path program 10 times [2024-06-21 21:23:41,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:41,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792310370] [2024-06-21 21:23:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:41,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:41,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:42,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:42,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:42,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792310370] [2024-06-21 21:23:42,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792310370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:42,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:42,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:42,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092365468] [2024-06-21 21:23:42,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:42,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:42,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:42,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:42,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:42,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:42,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 244 transitions, 1990 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:42,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:42,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:42,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:43,313 INFO L124 PetriNetUnfolderBase]: 683/1426 cut-off events. [2024-06-21 21:23:43,314 INFO L125 PetriNetUnfolderBase]: For 131478/131478 co-relation queries the response was YES. [2024-06-21 21:23:43,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7535 conditions, 1426 events. 683/1426 cut-off events. For 131478/131478 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9219 event pairs, 196 based on Foata normal form. 6/1426 useless extension candidates. Maximal degree in co-relation 7381. Up to 1086 conditions per place. [2024-06-21 21:23:43,329 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 60 changer transitions 6/263 dead transitions. [2024-06-21 21:23:43,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 263 transitions, 2860 flow [2024-06-21 21:23:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-21 21:23:43,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-21 21:23:43,329 INFO L175 Difference]: Start difference. First operand has 373 places, 244 transitions, 1990 flow. Second operand 12 states and 164 transitions. [2024-06-21 21:23:43,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 263 transitions, 2860 flow [2024-06-21 21:23:43,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 263 transitions, 2698 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:43,857 INFO L231 Difference]: Finished difference. Result has 366 places, 242 transitions, 1960 flow [2024-06-21 21:23:43,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1960, PETRI_PLACES=366, PETRI_TRANSITIONS=242} [2024-06-21 21:23:43,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-21 21:23:43,858 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 242 transitions, 1960 flow [2024-06-21 21:23:43,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:43,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:43,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:43,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-21 21:23:43,859 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:43,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:43,859 INFO L85 PathProgramCache]: Analyzing trace with hash -233813210, now seen corresponding path program 11 times [2024-06-21 21:23:43,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:43,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201738461] [2024-06-21 21:23:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:43,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:44,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:44,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:44,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201738461] [2024-06-21 21:23:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201738461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:44,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:44,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:44,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846517157] [2024-06-21 21:23:44,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:44,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:44,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:44,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:44,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:44,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:44,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 242 transitions, 1960 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:44,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:44,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:44,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:45,150 INFO L124 PetriNetUnfolderBase]: 681/1424 cut-off events. [2024-06-21 21:23:45,150 INFO L125 PetriNetUnfolderBase]: For 135258/135258 co-relation queries the response was YES. [2024-06-21 21:23:45,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7416 conditions, 1424 events. 681/1424 cut-off events. For 135258/135258 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9163 event pairs, 202 based on Foata normal form. 8/1426 useless extension candidates. Maximal degree in co-relation 7265. Up to 1132 conditions per place. [2024-06-21 21:23:45,166 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 77 changer transitions 9/257 dead transitions. [2024-06-21 21:23:45,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 257 transitions, 2558 flow [2024-06-21 21:23:45,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:45,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-21 21:23:45,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-21 21:23:45,167 INFO L175 Difference]: Start difference. First operand has 366 places, 242 transitions, 1960 flow. Second operand 12 states and 158 transitions. [2024-06-21 21:23:45,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 257 transitions, 2558 flow [2024-06-21 21:23:45,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 257 transitions, 2436 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:45,630 INFO L231 Difference]: Finished difference. Result has 365 places, 239 transitions, 1980 flow [2024-06-21 21:23:45,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1980, PETRI_PLACES=365, PETRI_TRANSITIONS=239} [2024-06-21 21:23:45,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-21 21:23:45,631 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 239 transitions, 1980 flow [2024-06-21 21:23:45,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:45,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:45,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:45,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-21 21:23:45,631 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:45,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:45,632 INFO L85 PathProgramCache]: Analyzing trace with hash -233486780, now seen corresponding path program 12 times [2024-06-21 21:23:45,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:45,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859990148] [2024-06-21 21:23:45,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:45,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:46,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:46,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:46,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859990148] [2024-06-21 21:23:46,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859990148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:46,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:46,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:46,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417453059] [2024-06-21 21:23:46,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:46,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:46,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:46,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:46,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:46,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:46,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 239 transitions, 1980 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:46,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:46,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:46,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:46,914 INFO L124 PetriNetUnfolderBase]: 672/1411 cut-off events. [2024-06-21 21:23:46,915 INFO L125 PetriNetUnfolderBase]: For 121468/121468 co-relation queries the response was YES. [2024-06-21 21:23:46,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 1411 events. 672/1411 cut-off events. For 121468/121468 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 9100 event pairs, 198 based on Foata normal form. 6/1411 useless extension candidates. Maximal degree in co-relation 7209. Up to 1122 conditions per place. [2024-06-21 21:23:46,929 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 164 selfloop transitions, 74 changer transitions 12/254 dead transitions. [2024-06-21 21:23:46,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 254 transitions, 2554 flow [2024-06-21 21:23:46,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:46,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-21 21:23:46,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-21 21:23:46,930 INFO L175 Difference]: Start difference. First operand has 365 places, 239 transitions, 1980 flow. Second operand 12 states and 156 transitions. [2024-06-21 21:23:46,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 254 transitions, 2554 flow [2024-06-21 21:23:47,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 254 transitions, 2390 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:47,379 INFO L231 Difference]: Finished difference. Result has 363 places, 235 transitions, 1946 flow [2024-06-21 21:23:47,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1818, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1946, PETRI_PLACES=363, PETRI_TRANSITIONS=235} [2024-06-21 21:23:47,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-21 21:23:47,380 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 235 transitions, 1946 flow [2024-06-21 21:23:47,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:47,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:47,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:47,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-21 21:23:47,380 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:47,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:47,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1318985118, now seen corresponding path program 13 times [2024-06-21 21:23:47,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:47,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285736285] [2024-06-21 21:23:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:47,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:48,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:48,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285736285] [2024-06-21 21:23:48,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285736285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:48,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:48,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195355980] [2024-06-21 21:23:48,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:48,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:48,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:48,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:48,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:48,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 235 transitions, 1946 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:48,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:48,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:48,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:48,950 INFO L124 PetriNetUnfolderBase]: 679/1431 cut-off events. [2024-06-21 21:23:48,951 INFO L125 PetriNetUnfolderBase]: For 142875/142875 co-relation queries the response was YES. [2024-06-21 21:23:48,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7929 conditions, 1431 events. 679/1431 cut-off events. For 142875/142875 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9165 event pairs, 319 based on Foata normal form. 6/1436 useless extension candidates. Maximal degree in co-relation 7780. Up to 1213 conditions per place. [2024-06-21 21:23:48,966 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 222 selfloop transitions, 21 changer transitions 9/256 dead transitions. [2024-06-21 21:23:48,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 256 transitions, 2778 flow [2024-06-21 21:23:48,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-21 21:23:48,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-21 21:23:48,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 172 transitions. [2024-06-21 21:23:48,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38392857142857145 [2024-06-21 21:23:48,967 INFO L175 Difference]: Start difference. First operand has 363 places, 235 transitions, 1946 flow. Second operand 14 states and 172 transitions. [2024-06-21 21:23:48,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 256 transitions, 2778 flow [2024-06-21 21:23:49,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 256 transitions, 2604 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:49,556 INFO L231 Difference]: Finished difference. Result has 359 places, 232 transitions, 1813 flow [2024-06-21 21:23:49,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1813, PETRI_PLACES=359, PETRI_TRANSITIONS=232} [2024-06-21 21:23:49,557 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-21 21:23:49,557 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 232 transitions, 1813 flow [2024-06-21 21:23:49,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:49,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:49,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:49,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-21 21:23:49,557 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:49,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:49,558 INFO L85 PathProgramCache]: Analyzing trace with hash -243930502, now seen corresponding path program 14 times [2024-06-21 21:23:49,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:49,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666152381] [2024-06-21 21:23:49,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:49,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:50,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:50,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666152381] [2024-06-21 21:23:50,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666152381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:50,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:50,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:50,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473979641] [2024-06-21 21:23:50,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:50,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:50,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:50,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:50,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:50,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:50,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 232 transitions, 1813 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:50,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:50,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:50,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:51,244 INFO L124 PetriNetUnfolderBase]: 691/1453 cut-off events. [2024-06-21 21:23:51,244 INFO L125 PetriNetUnfolderBase]: For 166809/166809 co-relation queries the response was YES. [2024-06-21 21:23:51,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8609 conditions, 1453 events. 691/1453 cut-off events. For 166809/166809 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9326 event pairs, 331 based on Foata normal form. 6/1458 useless extension candidates. Maximal degree in co-relation 8463. Up to 1282 conditions per place. [2024-06-21 21:23:51,259 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 16 changer transitions 6/251 dead transitions. [2024-06-21 21:23:51,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 251 transitions, 2619 flow [2024-06-21 21:23:51,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:51,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:51,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-21 21:23:51,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-21 21:23:51,260 INFO L175 Difference]: Start difference. First operand has 359 places, 232 transitions, 1813 flow. Second operand 12 states and 151 transitions. [2024-06-21 21:23:51,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 251 transitions, 2619 flow [2024-06-21 21:23:51,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 251 transitions, 2571 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-21 21:23:51,873 INFO L231 Difference]: Finished difference. Result has 354 places, 230 transitions, 1789 flow [2024-06-21 21:23:51,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1789, PETRI_PLACES=354, PETRI_TRANSITIONS=230} [2024-06-21 21:23:51,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-21 21:23:51,873 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 230 transitions, 1789 flow [2024-06-21 21:23:51,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:51,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:51,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:51,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-21 21:23:51,874 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:51,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:51,874 INFO L85 PathProgramCache]: Analyzing trace with hash -67039184, now seen corresponding path program 15 times [2024-06-21 21:23:51,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:51,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031849709] [2024-06-21 21:23:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:51,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:52,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031849709] [2024-06-21 21:23:52,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031849709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:52,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:52,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:52,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514008935] [2024-06-21 21:23:52,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:52,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:52,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:52,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:52,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:52,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:52,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 230 transitions, 1789 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:52,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:52,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:52,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:53,350 INFO L124 PetriNetUnfolderBase]: 685/1441 cut-off events. [2024-06-21 21:23:53,350 INFO L125 PetriNetUnfolderBase]: For 160919/160919 co-relation queries the response was YES. [2024-06-21 21:23:53,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8498 conditions, 1441 events. 685/1441 cut-off events. For 160919/160919 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9236 event pairs, 329 based on Foata normal form. 6/1446 useless extension candidates. Maximal degree in co-relation 8354. Up to 1263 conditions per place. [2024-06-21 21:23:53,365 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 221 selfloop transitions, 19 changer transitions 6/250 dead transitions. [2024-06-21 21:23:53,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 250 transitions, 2591 flow [2024-06-21 21:23:53,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:23:53,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:23:53,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-21 21:23:53,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-21 21:23:53,367 INFO L175 Difference]: Start difference. First operand has 354 places, 230 transitions, 1789 flow. Second operand 13 states and 163 transitions. [2024-06-21 21:23:53,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 250 transitions, 2591 flow [2024-06-21 21:23:53,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 250 transitions, 2555 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 21:23:53,950 INFO L231 Difference]: Finished difference. Result has 354 places, 228 transitions, 1783 flow [2024-06-21 21:23:53,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1783, PETRI_PLACES=354, PETRI_TRANSITIONS=228} [2024-06-21 21:23:53,950 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-21 21:23:53,951 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 228 transitions, 1783 flow [2024-06-21 21:23:53,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:53,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:53,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:53,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-21 21:23:53,951 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:53,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:53,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1141416234, now seen corresponding path program 16 times [2024-06-21 21:23:53,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:53,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096834947] [2024-06-21 21:23:53,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:53,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:55,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:55,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:55,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096834947] [2024-06-21 21:23:55,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096834947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:55,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:55,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:55,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105389636] [2024-06-21 21:23:55,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:55,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:55,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:55,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:55,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:55,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:55,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 228 transitions, 1783 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:55,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:55,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:55,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:55,759 INFO L124 PetriNetUnfolderBase]: 661/1388 cut-off events. [2024-06-21 21:23:55,760 INFO L125 PetriNetUnfolderBase]: For 140610/140610 co-relation queries the response was YES. [2024-06-21 21:23:55,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7550 conditions, 1388 events. 661/1388 cut-off events. For 140610/140610 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8815 event pairs, 207 based on Foata normal form. 8/1393 useless extension candidates. Maximal degree in co-relation 7407. Up to 1107 conditions per place. [2024-06-21 21:23:55,773 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 171 selfloop transitions, 58 changer transitions 13/246 dead transitions. [2024-06-21 21:23:55,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 246 transitions, 2359 flow [2024-06-21 21:23:55,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:23:55,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:23:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 171 transitions. [2024-06-21 21:23:55,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4110576923076923 [2024-06-21 21:23:55,774 INFO L175 Difference]: Start difference. First operand has 354 places, 228 transitions, 1783 flow. Second operand 13 states and 171 transitions. [2024-06-21 21:23:55,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 246 transitions, 2359 flow [2024-06-21 21:23:56,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 246 transitions, 2315 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:23:56,222 INFO L231 Difference]: Finished difference. Result has 353 places, 223 transitions, 1829 flow [2024-06-21 21:23:56,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1829, PETRI_PLACES=353, PETRI_TRANSITIONS=223} [2024-06-21 21:23:56,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-21 21:23:56,223 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 223 transitions, 1829 flow [2024-06-21 21:23:56,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:56,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:56,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:56,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-21 21:23:56,223 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:56,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:56,224 INFO L85 PathProgramCache]: Analyzing trace with hash 583436100, now seen corresponding path program 17 times [2024-06-21 21:23:56,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:56,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215539611] [2024-06-21 21:23:56,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:56,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:57,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:57,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215539611] [2024-06-21 21:23:57,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215539611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:57,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:57,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:57,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830758580] [2024-06-21 21:23:57,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:57,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:57,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:57,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:57,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:57,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:57,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 223 transitions, 1829 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:57,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:57,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:57,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:57,677 INFO L124 PetriNetUnfolderBase]: 632/1329 cut-off events. [2024-06-21 21:23:57,678 INFO L125 PetriNetUnfolderBase]: For 107228/107228 co-relation queries the response was YES. [2024-06-21 21:23:57,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6602 conditions, 1329 events. 632/1329 cut-off events. For 107228/107228 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8427 event pairs, 309 based on Foata normal form. 8/1335 useless extension candidates. Maximal degree in co-relation 6461. Up to 1213 conditions per place. [2024-06-21 21:23:57,690 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 208 selfloop transitions, 13 changer transitions 13/238 dead transitions. [2024-06-21 21:23:57,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 238 transitions, 2381 flow [2024-06-21 21:23:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:23:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:23:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 155 transitions. [2024-06-21 21:23:57,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37259615384615385 [2024-06-21 21:23:57,691 INFO L175 Difference]: Start difference. First operand has 353 places, 223 transitions, 1829 flow. Second operand 13 states and 155 transitions. [2024-06-21 21:23:57,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 238 transitions, 2381 flow [2024-06-21 21:23:58,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 238 transitions, 2241 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-21 21:23:58,020 INFO L231 Difference]: Finished difference. Result has 346 places, 218 transitions, 1691 flow [2024-06-21 21:23:58,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1691, PETRI_PLACES=346, PETRI_TRANSITIONS=218} [2024-06-21 21:23:58,021 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-21 21:23:58,021 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 218 transitions, 1691 flow [2024-06-21 21:23:58,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:58,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:58,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:58,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-21 21:23:58,022 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:58,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1690209498, now seen corresponding path program 18 times [2024-06-21 21:23:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:58,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244643931] [2024-06-21 21:23:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:58,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:23:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:23:58,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:23:58,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244643931] [2024-06-21 21:23:58,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244643931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:23:58,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:23:58,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:23:58,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666560201] [2024-06-21 21:23:58,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:23:58,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:23:58,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:23:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:23:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:23:58,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:23:58,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 218 transitions, 1691 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:58,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:23:58,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:23:58,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:23:59,324 INFO L124 PetriNetUnfolderBase]: 603/1265 cut-off events. [2024-06-21 21:23:59,324 INFO L125 PetriNetUnfolderBase]: For 71801/71801 co-relation queries the response was YES. [2024-06-21 21:23:59,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5415 conditions, 1265 events. 603/1265 cut-off events. For 71801/71801 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7932 event pairs, 297 based on Foata normal form. 8/1272 useless extension candidates. Maximal degree in co-relation 5277. Up to 1154 conditions per place. [2024-06-21 21:23:59,337 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 203 selfloop transitions, 10 changer transitions 15/232 dead transitions. [2024-06-21 21:23:59,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 232 transitions, 2187 flow [2024-06-21 21:23:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:23:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:23:59,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 21:23:59,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 21:23:59,338 INFO L175 Difference]: Start difference. First operand has 346 places, 218 transitions, 1691 flow. Second operand 12 states and 144 transitions. [2024-06-21 21:23:59,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 232 transitions, 2187 flow [2024-06-21 21:23:59,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 232 transitions, 2144 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 21:23:59,527 INFO L231 Difference]: Finished difference. Result has 338 places, 211 transitions, 1607 flow [2024-06-21 21:23:59,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1607, PETRI_PLACES=338, PETRI_TRANSITIONS=211} [2024-06-21 21:23:59,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-21 21:23:59,527 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 211 transitions, 1607 flow [2024-06-21 21:23:59,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:23:59,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:23:59,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:23:59,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-21 21:23:59,528 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:23:59,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:23:59,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1087192218, now seen corresponding path program 1 times [2024-06-21 21:23:59,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:23:59,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704079370] [2024-06-21 21:23:59,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:23:59,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:23:59,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:00,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:00,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704079370] [2024-06-21 21:24:00,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704079370] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:00,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:00,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:00,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386778129] [2024-06-21 21:24:00,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:00,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:00,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:00,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:00,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:01,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:01,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 211 transitions, 1607 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:01,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:01,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:01,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:01,436 INFO L124 PetriNetUnfolderBase]: 591/1238 cut-off events. [2024-06-21 21:24:01,436 INFO L125 PetriNetUnfolderBase]: For 61970/61970 co-relation queries the response was YES. [2024-06-21 21:24:01,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5219 conditions, 1238 events. 591/1238 cut-off events. For 61970/61970 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7694 event pairs, 167 based on Foata normal form. 6/1243 useless extension candidates. Maximal degree in co-relation 5083. Up to 1087 conditions per place. [2024-06-21 21:24:01,447 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 196 selfloop transitions, 21 changer transitions 12/233 dead transitions. [2024-06-21 21:24:01,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 233 transitions, 2125 flow [2024-06-21 21:24:01,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 167 transitions. [2024-06-21 21:24:01,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014423076923077 [2024-06-21 21:24:01,448 INFO L175 Difference]: Start difference. First operand has 338 places, 211 transitions, 1607 flow. Second operand 13 states and 167 transitions. [2024-06-21 21:24:01,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 233 transitions, 2125 flow [2024-06-21 21:24:01,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 233 transitions, 2053 flow, removed 10 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:01,634 INFO L231 Difference]: Finished difference. Result has 328 places, 207 transitions, 1557 flow [2024-06-21 21:24:01,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1541, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1557, PETRI_PLACES=328, PETRI_TRANSITIONS=207} [2024-06-21 21:24:01,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-21 21:24:01,634 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 207 transitions, 1557 flow [2024-06-21 21:24:01,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:01,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:01,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:01,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-21 21:24:01,635 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:01,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:01,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1489915966, now seen corresponding path program 2 times [2024-06-21 21:24:01,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:01,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876889340] [2024-06-21 21:24:01,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:01,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:03,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:03,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876889340] [2024-06-21 21:24:03,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876889340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:03,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:03,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:03,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392709613] [2024-06-21 21:24:03,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:03,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:03,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:03,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:03,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:03,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 207 transitions, 1557 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:03,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:03,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:03,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:03,536 INFO L124 PetriNetUnfolderBase]: 577/1212 cut-off events. [2024-06-21 21:24:03,536 INFO L125 PetriNetUnfolderBase]: For 58454/58454 co-relation queries the response was YES. [2024-06-21 21:24:03,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5001 conditions, 1212 events. 577/1212 cut-off events. For 58454/58454 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7499 event pairs, 167 based on Foata normal form. 6/1217 useless extension candidates. Maximal degree in co-relation 4870. Up to 1083 conditions per place. [2024-06-21 21:24:03,547 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 18 changer transitions 15/228 dead transitions. [2024-06-21 21:24:03,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 228 transitions, 2057 flow [2024-06-21 21:24:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:03,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:03,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-21 21:24:03,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-21 21:24:03,548 INFO L175 Difference]: Start difference. First operand has 328 places, 207 transitions, 1557 flow. Second operand 13 states and 163 transitions. [2024-06-21 21:24:03,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 228 transitions, 2057 flow [2024-06-21 21:24:03,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 228 transitions, 1995 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:03,725 INFO L231 Difference]: Finished difference. Result has 323 places, 202 transitions, 1504 flow [2024-06-21 21:24:03,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1495, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1504, PETRI_PLACES=323, PETRI_TRANSITIONS=202} [2024-06-21 21:24:03,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 292 predicate places. [2024-06-21 21:24:03,726 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 202 transitions, 1504 flow [2024-06-21 21:24:03,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:03,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:03,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:03,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-21 21:24:03,726 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:03,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:03,726 INFO L85 PathProgramCache]: Analyzing trace with hash -151381152, now seen corresponding path program 3 times [2024-06-21 21:24:03,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:03,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215054920] [2024-06-21 21:24:03,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:03,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:05,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215054920] [2024-06-21 21:24:05,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215054920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:05,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:05,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:05,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597235429] [2024-06-21 21:24:05,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:05,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:05,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:05,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:05,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 202 transitions, 1504 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:05,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:05,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:05,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:05,598 INFO L124 PetriNetUnfolderBase]: 565/1188 cut-off events. [2024-06-21 21:24:05,599 INFO L125 PetriNetUnfolderBase]: For 58418/58418 co-relation queries the response was YES. [2024-06-21 21:24:05,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4876 conditions, 1188 events. 565/1188 cut-off events. For 58418/58418 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 7333 event pairs, 161 based on Foata normal form. 6/1193 useless extension candidates. Maximal degree in co-relation 4747. Up to 1049 conditions per place. [2024-06-21 21:24:05,610 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 16 changer transitions 19/225 dead transitions. [2024-06-21 21:24:05,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 225 transitions, 2002 flow [2024-06-21 21:24:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:05,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-21 21:24:05,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-21 21:24:05,611 INFO L175 Difference]: Start difference. First operand has 323 places, 202 transitions, 1504 flow. Second operand 13 states and 164 transitions. [2024-06-21 21:24:05,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 225 transitions, 2002 flow [2024-06-21 21:24:05,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 225 transitions, 1956 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:05,758 INFO L231 Difference]: Finished difference. Result has 316 places, 196 transitions, 1447 flow [2024-06-21 21:24:05,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1458, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1447, PETRI_PLACES=316, PETRI_TRANSITIONS=196} [2024-06-21 21:24:05,758 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-21 21:24:05,758 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 196 transitions, 1447 flow [2024-06-21 21:24:05,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:05,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:05,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:05,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-21 21:24:05,759 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:05,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:05,759 INFO L85 PathProgramCache]: Analyzing trace with hash -143650754, now seen corresponding path program 4 times [2024-06-21 21:24:05,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:05,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012078203] [2024-06-21 21:24:05,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:05,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:06,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:06,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012078203] [2024-06-21 21:24:06,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012078203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:06,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:06,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:06,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630441066] [2024-06-21 21:24:06,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:06,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:06,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:06,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:06,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:07,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:07,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 196 transitions, 1447 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:07,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:07,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:07,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:07,344 INFO L124 PetriNetUnfolderBase]: 546/1151 cut-off events. [2024-06-21 21:24:07,344 INFO L125 PetriNetUnfolderBase]: For 55544/55544 co-relation queries the response was YES. [2024-06-21 21:24:07,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4709 conditions, 1151 events. 546/1151 cut-off events. For 55544/55544 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7031 event pairs, 153 based on Foata normal form. 6/1156 useless extension candidates. Maximal degree in co-relation 4583. Up to 1003 conditions per place. [2024-06-21 21:24:07,354 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 14 changer transitions 24/221 dead transitions. [2024-06-21 21:24:07,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 221 transitions, 1943 flow [2024-06-21 21:24:07,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-21 21:24:07,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-21 21:24:07,355 INFO L175 Difference]: Start difference. First operand has 316 places, 196 transitions, 1447 flow. Second operand 13 states and 165 transitions. [2024-06-21 21:24:07,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 221 transitions, 1943 flow [2024-06-21 21:24:07,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 221 transitions, 1891 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:07,486 INFO L231 Difference]: Finished difference. Result has 307 places, 189 transitions, 1368 flow [2024-06-21 21:24:07,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1368, PETRI_PLACES=307, PETRI_TRANSITIONS=189} [2024-06-21 21:24:07,487 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-21 21:24:07,487 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 189 transitions, 1368 flow [2024-06-21 21:24:07,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:07,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:07,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:07,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-21 21:24:07,487 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:07,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:07,488 INFO L85 PathProgramCache]: Analyzing trace with hash -803333036, now seen corresponding path program 5 times [2024-06-21 21:24:07,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:07,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246483391] [2024-06-21 21:24:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:07,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:08,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:08,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246483391] [2024-06-21 21:24:08,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246483391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:08,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:08,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:08,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513622941] [2024-06-21 21:24:08,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:08,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:08,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:08,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:08,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:08,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:08,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 189 transitions, 1368 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:08,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:08,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:08,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:09,260 INFO L124 PetriNetUnfolderBase]: 520/1097 cut-off events. [2024-06-21 21:24:09,261 INFO L125 PetriNetUnfolderBase]: For 55425/55425 co-relation queries the response was YES. [2024-06-21 21:24:09,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 1097 events. 520/1097 cut-off events. For 55425/55425 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 6643 event pairs, 151 based on Foata normal form. 6/1102 useless extension candidates. Maximal degree in co-relation 4343. Up to 946 conditions per place. [2024-06-21 21:24:09,268 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 26 changer transitions 13/209 dead transitions. [2024-06-21 21:24:09,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 209 transitions, 1826 flow [2024-06-21 21:24:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-21 21:24:09,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2024-06-21 21:24:09,269 INFO L175 Difference]: Start difference. First operand has 307 places, 189 transitions, 1368 flow. Second operand 13 states and 166 transitions. [2024-06-21 21:24:09,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 209 transitions, 1826 flow [2024-06-21 21:24:09,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 209 transitions, 1778 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:09,390 INFO L231 Difference]: Finished difference. Result has 295 places, 185 transitions, 1344 flow [2024-06-21 21:24:09,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1344, PETRI_PLACES=295, PETRI_TRANSITIONS=185} [2024-06-21 21:24:09,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-21 21:24:09,391 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 185 transitions, 1344 flow [2024-06-21 21:24:09,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:09,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:09,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:09,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-21 21:24:09,391 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:09,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:09,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1622578872, now seen corresponding path program 6 times [2024-06-21 21:24:09,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:09,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939795655] [2024-06-21 21:24:09,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:09,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:10,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:10,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939795655] [2024-06-21 21:24:10,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939795655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:10,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:10,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:10,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129244549] [2024-06-21 21:24:10,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:10,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:10,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:10,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:10,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:10,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 185 transitions, 1344 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:10,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:10,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:10,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:11,168 INFO L124 PetriNetUnfolderBase]: 509/1076 cut-off events. [2024-06-21 21:24:11,168 INFO L125 PetriNetUnfolderBase]: For 55375/55375 co-relation queries the response was YES. [2024-06-21 21:24:11,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 1076 events. 509/1076 cut-off events. For 55375/55375 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6491 event pairs, 147 based on Foata normal form. 6/1081 useless extension candidates. Maximal degree in co-relation 4268. Up to 920 conditions per place. [2024-06-21 21:24:11,176 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 24 changer transitions 16/206 dead transitions. [2024-06-21 21:24:11,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 206 transitions, 1798 flow [2024-06-21 21:24:11,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:11,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 166 transitions. [2024-06-21 21:24:11,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39903846153846156 [2024-06-21 21:24:11,177 INFO L175 Difference]: Start difference. First operand has 295 places, 185 transitions, 1344 flow. Second operand 13 states and 166 transitions. [2024-06-21 21:24:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 206 transitions, 1798 flow [2024-06-21 21:24:11,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 206 transitions, 1740 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 21:24:11,334 INFO L231 Difference]: Finished difference. Result has 292 places, 180 transitions, 1298 flow [2024-06-21 21:24:11,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1298, PETRI_PLACES=292, PETRI_TRANSITIONS=180} [2024-06-21 21:24:11,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-21 21:24:11,334 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 180 transitions, 1298 flow [2024-06-21 21:24:11,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:11,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:11,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:11,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-21 21:24:11,335 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:11,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash 136712596, now seen corresponding path program 7 times [2024-06-21 21:24:11,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:11,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402605029] [2024-06-21 21:24:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:11,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:12,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:12,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402605029] [2024-06-21 21:24:12,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402605029] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:12,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:12,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:12,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028773425] [2024-06-21 21:24:12,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:12,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:12,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:12,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:12,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:12,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 180 transitions, 1298 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:12,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:12,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:12,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:13,066 INFO L124 PetriNetUnfolderBase]: 494/1048 cut-off events. [2024-06-21 21:24:13,066 INFO L125 PetriNetUnfolderBase]: For 55394/55394 co-relation queries the response was YES. [2024-06-21 21:24:13,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 1048 events. 494/1048 cut-off events. For 55394/55394 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6287 event pairs, 183 based on Foata normal form. 6/1053 useless extension candidates. Maximal degree in co-relation 4153. Up to 925 conditions per place. [2024-06-21 21:24:13,074 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 167 selfloop transitions, 16 changer transitions 13/200 dead transitions. [2024-06-21 21:24:13,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 200 transitions, 1738 flow [2024-06-21 21:24:13,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-21 21:24:13,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-21 21:24:13,075 INFO L175 Difference]: Start difference. First operand has 292 places, 180 transitions, 1298 flow. Second operand 13 states and 161 transitions. [2024-06-21 21:24:13,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 200 transitions, 1738 flow [2024-06-21 21:24:13,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 200 transitions, 1682 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-21 21:24:13,216 INFO L231 Difference]: Finished difference. Result has 287 places, 176 transitions, 1248 flow [2024-06-21 21:24:13,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1242, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1248, PETRI_PLACES=287, PETRI_TRANSITIONS=176} [2024-06-21 21:24:13,216 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-21 21:24:13,216 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 176 transitions, 1248 flow [2024-06-21 21:24:13,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:13,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:13,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:13,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-21 21:24:13,217 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:13,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1732806746, now seen corresponding path program 8 times [2024-06-21 21:24:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:13,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607585044] [2024-06-21 21:24:13,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:14,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:14,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607585044] [2024-06-21 21:24:14,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607585044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:14,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:14,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:14,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760067442] [2024-06-21 21:24:14,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:14,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:14,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:14,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:14,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 176 transitions, 1248 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:14,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:14,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:14,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:14,758 INFO L124 PetriNetUnfolderBase]: 483/1027 cut-off events. [2024-06-21 21:24:14,758 INFO L125 PetriNetUnfolderBase]: For 55407/55407 co-relation queries the response was YES. [2024-06-21 21:24:14,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4167 conditions, 1027 events. 483/1027 cut-off events. For 55407/55407 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 6142 event pairs, 175 based on Foata normal form. 6/1032 useless extension candidates. Maximal degree in co-relation 4051. Up to 855 conditions per place. [2024-06-21 21:24:14,766 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 162 selfloop transitions, 16 changer transitions 16/198 dead transitions. [2024-06-21 21:24:14,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 198 transitions, 1688 flow [2024-06-21 21:24:14,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:14,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 164 transitions. [2024-06-21 21:24:14,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942307692307692 [2024-06-21 21:24:14,767 INFO L175 Difference]: Start difference. First operand has 287 places, 176 transitions, 1248 flow. Second operand 13 states and 164 transitions. [2024-06-21 21:24:14,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 198 transitions, 1688 flow [2024-06-21 21:24:14,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 198 transitions, 1650 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-21 21:24:14,901 INFO L231 Difference]: Finished difference. Result has 284 places, 170 transitions, 1199 flow [2024-06-21 21:24:14,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1199, PETRI_PLACES=284, PETRI_TRANSITIONS=170} [2024-06-21 21:24:14,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-21 21:24:14,902 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 170 transitions, 1199 flow [2024-06-21 21:24:14,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:14,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:14,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:14,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-21 21:24:14,903 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:14,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:14,903 INFO L85 PathProgramCache]: Analyzing trace with hash 132243946, now seen corresponding path program 9 times [2024-06-21 21:24:14,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:14,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780844520] [2024-06-21 21:24:14,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:14,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:15,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:15,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780844520] [2024-06-21 21:24:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780844520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:15,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:15,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706061107] [2024-06-21 21:24:15,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:15,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:15,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:15,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:15,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 170 transitions, 1199 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:15,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:15,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:15,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:16,233 INFO L124 PetriNetUnfolderBase]: 464/988 cut-off events. [2024-06-21 21:24:16,233 INFO L125 PetriNetUnfolderBase]: For 55363/55363 co-relation queries the response was YES. [2024-06-21 21:24:16,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4031 conditions, 988 events. 464/988 cut-off events. For 55363/55363 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5832 event pairs, 171 based on Foata normal form. 6/993 useless extension candidates. Maximal degree in co-relation 3915. Up to 851 conditions per place. [2024-06-21 21:24:16,241 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 160 selfloop transitions, 14 changer transitions 13/191 dead transitions. [2024-06-21 21:24:16,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 191 transitions, 1623 flow [2024-06-21 21:24:16,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 161 transitions. [2024-06-21 21:24:16,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-06-21 21:24:16,242 INFO L175 Difference]: Start difference. First operand has 284 places, 170 transitions, 1199 flow. Second operand 13 states and 161 transitions. [2024-06-21 21:24:16,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 191 transitions, 1623 flow [2024-06-21 21:24:16,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 191 transitions, 1581 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:16,369 INFO L231 Difference]: Finished difference. Result has 277 places, 165 transitions, 1149 flow [2024-06-21 21:24:16,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1157, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1149, PETRI_PLACES=277, PETRI_TRANSITIONS=165} [2024-06-21 21:24:16,369 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-21 21:24:16,370 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 165 transitions, 1149 flow [2024-06-21 21:24:16,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:16,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:16,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:16,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-21 21:24:16,370 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:16,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash 272619430, now seen corresponding path program 10 times [2024-06-21 21:24:16,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:16,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912978450] [2024-06-21 21:24:16,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:16,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:17,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:17,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912978450] [2024-06-21 21:24:17,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912978450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:17,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:17,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:17,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161467251] [2024-06-21 21:24:17,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:17,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:17,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:17,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:17,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:17,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:17,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 165 transitions, 1149 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:17,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:17,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:17,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:17,743 INFO L124 PetriNetUnfolderBase]: 449/957 cut-off events. [2024-06-21 21:24:17,743 INFO L125 PetriNetUnfolderBase]: For 55221/55221 co-relation queries the response was YES. [2024-06-21 21:24:17,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3903 conditions, 957 events. 449/957 cut-off events. For 55221/55221 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5597 event pairs, 177 based on Foata normal form. 6/962 useless extension candidates. Maximal degree in co-relation 3789. Up to 847 conditions per place. [2024-06-21 21:24:17,751 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 8 changer transitions 22/185 dead transitions. [2024-06-21 21:24:17,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 185 transitions, 1559 flow [2024-06-21 21:24:17,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:17,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-21 21:24:17,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-21 21:24:17,752 INFO L175 Difference]: Start difference. First operand has 277 places, 165 transitions, 1149 flow. Second operand 13 states and 157 transitions. [2024-06-21 21:24:17,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 185 transitions, 1559 flow [2024-06-21 21:24:17,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 185 transitions, 1523 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:17,873 INFO L231 Difference]: Finished difference. Result has 272 places, 157 transitions, 1072 flow [2024-06-21 21:24:17,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1113, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1072, PETRI_PLACES=272, PETRI_TRANSITIONS=157} [2024-06-21 21:24:17,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-21 21:24:17,873 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 157 transitions, 1072 flow [2024-06-21 21:24:17,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:17,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:17,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:17,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-21 21:24:17,874 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:17,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:17,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1102402472, now seen corresponding path program 11 times [2024-06-21 21:24:17,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:17,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029361227] [2024-06-21 21:24:17,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:17,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:18,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:18,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029361227] [2024-06-21 21:24:18,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029361227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:18,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:18,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:18,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158259599] [2024-06-21 21:24:18,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:18,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:18,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:18,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:19,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:19,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 157 transitions, 1072 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:19,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:19,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:19,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:19,353 INFO L124 PetriNetUnfolderBase]: 435/920 cut-off events. [2024-06-21 21:24:19,353 INFO L125 PetriNetUnfolderBase]: For 55127/55127 co-relation queries the response was YES. [2024-06-21 21:24:19,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3750 conditions, 920 events. 435/920 cut-off events. For 55127/55127 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5299 event pairs, 156 based on Foata normal form. 6/925 useless extension candidates. Maximal degree in co-relation 3637. Up to 790 conditions per place. [2024-06-21 21:24:19,359 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 145 selfloop transitions, 13 changer transitions 21/183 dead transitions. [2024-06-21 21:24:19,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 183 transitions, 1494 flow [2024-06-21 21:24:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-21 21:24:19,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-21 21:24:19,375 INFO L175 Difference]: Start difference. First operand has 272 places, 157 transitions, 1072 flow. Second operand 13 states and 165 transitions. [2024-06-21 21:24:19,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 183 transitions, 1494 flow [2024-06-21 21:24:19,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 183 transitions, 1427 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:19,477 INFO L231 Difference]: Finished difference. Result has 258 places, 151 transitions, 985 flow [2024-06-21 21:24:19,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=985, PETRI_PLACES=258, PETRI_TRANSITIONS=151} [2024-06-21 21:24:19,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-21 21:24:19,477 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 151 transitions, 985 flow [2024-06-21 21:24:19,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:19,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:19,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:19,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-21 21:24:19,478 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:19,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:19,478 INFO L85 PathProgramCache]: Analyzing trace with hash -593300980, now seen corresponding path program 12 times [2024-06-21 21:24:19,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:19,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213595118] [2024-06-21 21:24:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:19,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:20,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:20,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213595118] [2024-06-21 21:24:20,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213595118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:20,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:20,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:20,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378225402] [2024-06-21 21:24:20,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:20,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:20,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:20,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:20,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:21,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:21,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 151 transitions, 985 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:21,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:21,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:21,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:21,294 INFO L124 PetriNetUnfolderBase]: 411/874 cut-off events. [2024-06-21 21:24:21,294 INFO L125 PetriNetUnfolderBase]: For 53749/53749 co-relation queries the response was YES. [2024-06-21 21:24:21,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 874 events. 411/874 cut-off events. For 53749/53749 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4981 event pairs, 137 based on Foata normal form. 6/879 useless extension candidates. Maximal degree in co-relation 3404. Up to 746 conditions per place. [2024-06-21 21:24:21,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 141 selfloop transitions, 17 changer transitions 12/174 dead transitions. [2024-06-21 21:24:21,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 174 transitions, 1381 flow [2024-06-21 21:24:21,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:21,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:21,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-06-21 21:24:21,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39663461538461536 [2024-06-21 21:24:21,302 INFO L175 Difference]: Start difference. First operand has 258 places, 151 transitions, 985 flow. Second operand 13 states and 165 transitions. [2024-06-21 21:24:21,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 174 transitions, 1381 flow [2024-06-21 21:24:21,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 174 transitions, 1343 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:21,414 INFO L231 Difference]: Finished difference. Result has 248 places, 147 transitions, 956 flow [2024-06-21 21:24:21,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=947, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=956, PETRI_PLACES=248, PETRI_TRANSITIONS=147} [2024-06-21 21:24:21,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-21 21:24:21,415 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 147 transitions, 956 flow [2024-06-21 21:24:21,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:21,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:21,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:21,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-21 21:24:21,416 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:21,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:21,416 INFO L85 PathProgramCache]: Analyzing trace with hash 474860328, now seen corresponding path program 13 times [2024-06-21 21:24:21,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:21,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680970770] [2024-06-21 21:24:21,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:21,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:22,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:22,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:22,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680970770] [2024-06-21 21:24:22,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680970770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:22,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:22,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:22,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678422431] [2024-06-21 21:24:22,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:22,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:22,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:22,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:22,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:22,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:22,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 147 transitions, 956 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:22,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:22,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:22,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:23,052 INFO L124 PetriNetUnfolderBase]: 382/815 cut-off events. [2024-06-21 21:24:23,052 INFO L125 PetriNetUnfolderBase]: For 35917/35917 co-relation queries the response was YES. [2024-06-21 21:24:23,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2874 conditions, 815 events. 382/815 cut-off events. For 35917/35917 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4605 event pairs, 121 based on Foata normal form. 6/820 useless extension candidates. Maximal degree in co-relation 2770. Up to 709 conditions per place. [2024-06-21 21:24:23,058 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 14 changer transitions 14/168 dead transitions. [2024-06-21 21:24:23,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 168 transitions, 1336 flow [2024-06-21 21:24:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:23,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-21 21:24:23,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38461538461538464 [2024-06-21 21:24:23,059 INFO L175 Difference]: Start difference. First operand has 248 places, 147 transitions, 956 flow. Second operand 13 states and 160 transitions. [2024-06-21 21:24:23,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 168 transitions, 1336 flow [2024-06-21 21:24:23,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 168 transitions, 1286 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:23,129 INFO L231 Difference]: Finished difference. Result has 243 places, 142 transitions, 903 flow [2024-06-21 21:24:23,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=903, PETRI_PLACES=243, PETRI_TRANSITIONS=142} [2024-06-21 21:24:23,130 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-21 21:24:23,130 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 142 transitions, 903 flow [2024-06-21 21:24:23,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:23,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:23,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:23,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-21 21:24:23,130 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:23,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:23,131 INFO L85 PathProgramCache]: Analyzing trace with hash 41173644, now seen corresponding path program 14 times [2024-06-21 21:24:23,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:23,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225270152] [2024-06-21 21:24:23,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:23,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:24,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:24,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225270152] [2024-06-21 21:24:24,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225270152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:24,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:24,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365077399] [2024-06-21 21:24:24,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:24,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:24,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:24,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 142 transitions, 903 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:24,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:24,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:24,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:24,601 INFO L124 PetriNetUnfolderBase]: 373/796 cut-off events. [2024-06-21 21:24:24,601 INFO L125 PetriNetUnfolderBase]: For 35886/35886 co-relation queries the response was YES. [2024-06-21 21:24:24,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2769 conditions, 796 events. 373/796 cut-off events. For 35886/35886 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4442 event pairs, 108 based on Foata normal form. 6/801 useless extension candidates. Maximal degree in co-relation 2667. Up to 675 conditions per place. [2024-06-21 21:24:24,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 129 selfloop transitions, 11 changer transitions 22/166 dead transitions. [2024-06-21 21:24:24,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 166 transitions, 1285 flow [2024-06-21 21:24:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-21 21:24:24,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-21 21:24:24,607 INFO L175 Difference]: Start difference. First operand has 243 places, 142 transitions, 903 flow. Second operand 13 states and 162 transitions. [2024-06-21 21:24:24,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 166 transitions, 1285 flow [2024-06-21 21:24:24,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 166 transitions, 1242 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:24,676 INFO L231 Difference]: Finished difference. Result has 234 places, 135 transitions, 838 flow [2024-06-21 21:24:24,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=838, PETRI_PLACES=234, PETRI_TRANSITIONS=135} [2024-06-21 21:24:24,676 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-21 21:24:24,676 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 135 transitions, 838 flow [2024-06-21 21:24:24,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:24,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:24,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:24,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-21 21:24:24,677 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:24,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:24,677 INFO L85 PathProgramCache]: Analyzing trace with hash 555770956, now seen corresponding path program 15 times [2024-06-21 21:24:24,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:24,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494111487] [2024-06-21 21:24:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:24,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494111487] [2024-06-21 21:24:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494111487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:25,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:25,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893314739] [2024-06-21 21:24:25,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:25,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:25,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:25,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:25,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:25,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:25,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 135 transitions, 838 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:25,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:25,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:25,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:26,183 INFO L124 PetriNetUnfolderBase]: 354/755 cut-off events. [2024-06-21 21:24:26,183 INFO L125 PetriNetUnfolderBase]: For 34907/34907 co-relation queries the response was YES. [2024-06-21 21:24:26,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2610 conditions, 755 events. 354/755 cut-off events. For 34907/34907 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4134 event pairs, 66 based on Foata normal form. 6/760 useless extension candidates. Maximal degree in co-relation 2510. Up to 614 conditions per place. [2024-06-21 21:24:26,188 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 9 changer transitions 27/161 dead transitions. [2024-06-21 21:24:26,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 161 transitions, 1214 flow [2024-06-21 21:24:26,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-21 21:24:26,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-21 21:24:26,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 162 transitions. [2024-06-21 21:24:26,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894230769230769 [2024-06-21 21:24:26,189 INFO L175 Difference]: Start difference. First operand has 234 places, 135 transitions, 838 flow. Second operand 13 states and 162 transitions. [2024-06-21 21:24:26,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 161 transitions, 1214 flow [2024-06-21 21:24:26,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 161 transitions, 1176 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-21 21:24:26,253 INFO L231 Difference]: Finished difference. Result has 224 places, 126 transitions, 762 flow [2024-06-21 21:24:26,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=762, PETRI_PLACES=224, PETRI_TRANSITIONS=126} [2024-06-21 21:24:26,253 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-06-21 21:24:26,253 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 126 transitions, 762 flow [2024-06-21 21:24:26,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:26,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:26,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:26,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-21 21:24:26,254 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:26,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash -252024180, now seen corresponding path program 16 times [2024-06-21 21:24:26,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:26,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661184849] [2024-06-21 21:24:26,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:26,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:27,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:27,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661184849] [2024-06-21 21:24:27,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661184849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:27,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:27,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:27,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515831546] [2024-06-21 21:24:27,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:27,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:27,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:27,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:27,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:27,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 126 transitions, 762 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:27,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:27,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:27,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:27,843 INFO L124 PetriNetUnfolderBase]: 327/692 cut-off events. [2024-06-21 21:24:27,843 INFO L125 PetriNetUnfolderBase]: For 34818/34818 co-relation queries the response was YES. [2024-06-21 21:24:27,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 692 events. 327/692 cut-off events. For 34818/34818 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3726 event pairs, 79 based on Foata normal form. 6/697 useless extension candidates. Maximal degree in co-relation 2293. Up to 566 conditions per place. [2024-06-21 21:24:27,848 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 114 selfloop transitions, 14 changer transitions 12/144 dead transitions. [2024-06-21 21:24:27,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 144 transitions, 1086 flow [2024-06-21 21:24:27,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:27,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 21:24:27,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 21:24:27,851 INFO L175 Difference]: Start difference. First operand has 224 places, 126 transitions, 762 flow. Second operand 12 states and 150 transitions. [2024-06-21 21:24:27,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 144 transitions, 1086 flow [2024-06-21 21:24:27,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 144 transitions, 1046 flow, removed 5 selfloop flow, removed 16 redundant places. [2024-06-21 21:24:27,900 INFO L231 Difference]: Finished difference. Result has 209 places, 122 transitions, 735 flow [2024-06-21 21:24:27,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=209, PETRI_TRANSITIONS=122} [2024-06-21 21:24:27,900 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-06-21 21:24:27,900 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 122 transitions, 735 flow [2024-06-21 21:24:27,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:27,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:27,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:27,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-21 21:24:27,901 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:27,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:27,901 INFO L85 PathProgramCache]: Analyzing trace with hash -123644606, now seen corresponding path program 17 times [2024-06-21 21:24:27,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:27,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043945212] [2024-06-21 21:24:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:27,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:29,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:29,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043945212] [2024-06-21 21:24:29,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043945212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:29,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:29,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254784187] [2024-06-21 21:24:29,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:29,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:29,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:29,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 122 transitions, 735 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:29,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:29,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:29,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:29,602 INFO L124 PetriNetUnfolderBase]: 313/666 cut-off events. [2024-06-21 21:24:29,603 INFO L125 PetriNetUnfolderBase]: For 34782/34782 co-relation queries the response was YES. [2024-06-21 21:24:29,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2304 conditions, 666 events. 313/666 cut-off events. For 34782/34782 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3565 event pairs, 77 based on Foata normal form. 6/671 useless extension candidates. Maximal degree in co-relation 2215. Up to 541 conditions per place. [2024-06-21 21:24:29,607 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 19 changer transitions 13/138 dead transitions. [2024-06-21 21:24:29,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 138 transitions, 1041 flow [2024-06-21 21:24:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 21:24:29,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 21:24:29,608 INFO L175 Difference]: Start difference. First operand has 209 places, 122 transitions, 735 flow. Second operand 12 states and 150 transitions. [2024-06-21 21:24:29,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 138 transitions, 1041 flow [2024-06-21 21:24:29,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 138 transitions, 1005 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:29,654 INFO L231 Difference]: Finished difference. Result has 203 places, 118 transitions, 718 flow [2024-06-21 21:24:29,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=718, PETRI_PLACES=203, PETRI_TRANSITIONS=118} [2024-06-21 21:24:29,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-21 21:24:29,654 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 118 transitions, 718 flow [2024-06-21 21:24:29,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:29,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:29,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:29,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-21 21:24:29,655 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:29,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:29,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1369109442, now seen corresponding path program 18 times [2024-06-21 21:24:29,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:29,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086866725] [2024-06-21 21:24:29,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:29,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:30,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:30,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086866725] [2024-06-21 21:24:30,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086866725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:30,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:30,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:30,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847422002] [2024-06-21 21:24:30,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:30,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:30,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:30,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:30,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:30,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:30,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 118 transitions, 718 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:30,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:30,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:30,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:30,887 INFO L124 PetriNetUnfolderBase]: 302/645 cut-off events. [2024-06-21 21:24:30,887 INFO L125 PetriNetUnfolderBase]: For 32128/32128 co-relation queries the response was YES. [2024-06-21 21:24:30,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2230 conditions, 645 events. 302/645 cut-off events. For 32128/32128 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3415 event pairs, 73 based on Foata normal form. 6/650 useless extension candidates. Maximal degree in co-relation 2144. Up to 515 conditions per place. [2024-06-21 21:24:30,891 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 17 changer transitions 16/135 dead transitions. [2024-06-21 21:24:30,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 135 transitions, 1020 flow [2024-06-21 21:24:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:30,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:30,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-21 21:24:30,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-21 21:24:30,892 INFO L175 Difference]: Start difference. First operand has 203 places, 118 transitions, 718 flow. Second operand 12 states and 150 transitions. [2024-06-21 21:24:30,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 135 transitions, 1020 flow [2024-06-21 21:24:30,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 135 transitions, 976 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 21:24:30,941 INFO L231 Difference]: Finished difference. Result has 198 places, 113 transitions, 685 flow [2024-06-21 21:24:30,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=685, PETRI_PLACES=198, PETRI_TRANSITIONS=113} [2024-06-21 21:24:30,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-06-21 21:24:30,941 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 113 transitions, 685 flow [2024-06-21 21:24:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:30,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:30,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:30,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-21 21:24:30,942 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:30,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:30,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1114851894, now seen corresponding path program 19 times [2024-06-21 21:24:30,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:30,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448741421] [2024-06-21 21:24:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:30,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:31,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:31,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448741421] [2024-06-21 21:24:31,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448741421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:31,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:31,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:31,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654885150] [2024-06-21 21:24:31,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:31,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:31,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:31,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:31,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:31,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:31,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 113 transitions, 685 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:31,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:31,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:31,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:32,162 INFO L124 PetriNetUnfolderBase]: 287/616 cut-off events. [2024-06-21 21:24:32,162 INFO L125 PetriNetUnfolderBase]: For 30400/30400 co-relation queries the response was YES. [2024-06-21 21:24:32,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2132 conditions, 616 events. 287/616 cut-off events. For 30400/30400 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3215 event pairs, 71 based on Foata normal form. 6/621 useless extension candidates. Maximal degree in co-relation 2048. Up to 514 conditions per place. [2024-06-21 21:24:32,166 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 11 changer transitions 14/129 dead transitions. [2024-06-21 21:24:32,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 129 transitions, 973 flow [2024-06-21 21:24:32,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:32,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:32,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-21 21:24:32,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-21 21:24:32,167 INFO L175 Difference]: Start difference. First operand has 198 places, 113 transitions, 685 flow. Second operand 12 states and 147 transitions. [2024-06-21 21:24:32,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 129 transitions, 973 flow [2024-06-21 21:24:32,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 129 transitions, 923 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:32,209 INFO L231 Difference]: Finished difference. Result has 189 places, 108 transitions, 637 flow [2024-06-21 21:24:32,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=637, PETRI_PLACES=189, PETRI_TRANSITIONS=108} [2024-06-21 21:24:32,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-21 21:24:32,209 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 108 transitions, 637 flow [2024-06-21 21:24:32,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:32,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:32,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:32,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-21 21:24:32,210 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:32,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:32,210 INFO L85 PathProgramCache]: Analyzing trace with hash -2084516576, now seen corresponding path program 20 times [2024-06-21 21:24:32,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:32,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860259735] [2024-06-21 21:24:32,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:32,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:33,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:33,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860259735] [2024-06-21 21:24:33,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860259735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:33,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:33,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:33,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316422273] [2024-06-21 21:24:33,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:33,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:33,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:33,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:33,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:33,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 108 transitions, 637 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:33,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:33,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:33,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:33,924 INFO L124 PetriNetUnfolderBase]: 275/590 cut-off events. [2024-06-21 21:24:33,924 INFO L125 PetriNetUnfolderBase]: For 27847/27847 co-relation queries the response was YES. [2024-06-21 21:24:33,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2029 conditions, 590 events. 275/590 cut-off events. For 27847/27847 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3045 event pairs, 69 based on Foata normal form. 6/595 useless extension candidates. Maximal degree in co-relation 1948. Up to 479 conditions per place. [2024-06-21 21:24:33,928 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 92 selfloop transitions, 15 changer transitions 13/124 dead transitions. [2024-06-21 21:24:33,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 124 transitions, 915 flow [2024-06-21 21:24:33,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:33,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 21:24:33,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 21:24:33,929 INFO L175 Difference]: Start difference. First operand has 189 places, 108 transitions, 637 flow. Second operand 12 states and 149 transitions. [2024-06-21 21:24:33,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 124 transitions, 915 flow [2024-06-21 21:24:33,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 124 transitions, 883 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:33,962 INFO L231 Difference]: Finished difference. Result has 182 places, 104 transitions, 620 flow [2024-06-21 21:24:33,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=620, PETRI_PLACES=182, PETRI_TRANSITIONS=104} [2024-06-21 21:24:33,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-21 21:24:33,962 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 104 transitions, 620 flow [2024-06-21 21:24:33,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:33,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:33,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-21 21:24:33,963 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:33,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:33,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1171035036, now seen corresponding path program 21 times [2024-06-21 21:24:33,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:33,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270579763] [2024-06-21 21:24:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:33,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:34,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:34,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:34,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270579763] [2024-06-21 21:24:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270579763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957150373] [2024-06-21 21:24:34,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:34,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:34,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:34,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:34,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:35,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:35,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 104 transitions, 620 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:35,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:35,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:35,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:35,370 INFO L124 PetriNetUnfolderBase]: 264/569 cut-off events. [2024-06-21 21:24:35,370 INFO L125 PetriNetUnfolderBase]: For 26252/26252 co-relation queries the response was YES. [2024-06-21 21:24:35,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1963 conditions, 569 events. 264/569 cut-off events. For 26252/26252 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2906 event pairs, 65 based on Foata normal form. 6/574 useless extension candidates. Maximal degree in co-relation 1884. Up to 453 conditions per place. [2024-06-21 21:24:35,373 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 12 changer transitions 17/121 dead transitions. [2024-06-21 21:24:35,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 121 transitions, 894 flow [2024-06-21 21:24:35,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:35,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:35,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-21 21:24:35,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-21 21:24:35,374 INFO L175 Difference]: Start difference. First operand has 182 places, 104 transitions, 620 flow. Second operand 12 states and 149 transitions. [2024-06-21 21:24:35,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 121 transitions, 894 flow [2024-06-21 21:24:35,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 121 transitions, 856 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:35,413 INFO L231 Difference]: Finished difference. Result has 176 places, 98 transitions, 583 flow [2024-06-21 21:24:35,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=583, PETRI_PLACES=176, PETRI_TRANSITIONS=98} [2024-06-21 21:24:35,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-21 21:24:35,414 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 98 transitions, 583 flow [2024-06-21 21:24:35,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:35,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:35,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:35,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-21 21:24:35,414 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:35,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:35,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1541020018, now seen corresponding path program 22 times [2024-06-21 21:24:35,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:35,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870916553] [2024-06-21 21:24:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:35,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:36,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:36,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870916553] [2024-06-21 21:24:36,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870916553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:36,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:36,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:36,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071668180] [2024-06-21 21:24:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:36,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:36,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:36,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:36,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:36,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 98 transitions, 583 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:36,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:36,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:36,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:36,959 INFO L124 PetriNetUnfolderBase]: 248/535 cut-off events. [2024-06-21 21:24:36,960 INFO L125 PetriNetUnfolderBase]: For 23922/23922 co-relation queries the response was YES. [2024-06-21 21:24:36,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1850 conditions, 535 events. 248/535 cut-off events. For 23922/23922 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2654 event pairs, 59 based on Foata normal form. 6/540 useless extension candidates. Maximal degree in co-relation 1774. Up to 436 conditions per place. [2024-06-21 21:24:36,963 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 5 changer transitions 21/116 dead transitions. [2024-06-21 21:24:36,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 116 transitions, 849 flow [2024-06-21 21:24:36,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 21:24:36,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 21:24:36,964 INFO L175 Difference]: Start difference. First operand has 176 places, 98 transitions, 583 flow. Second operand 12 states and 144 transitions. [2024-06-21 21:24:36,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 116 transitions, 849 flow [2024-06-21 21:24:36,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 116 transitions, 815 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:36,992 INFO L231 Difference]: Finished difference. Result has 167 places, 91 transitions, 531 flow [2024-06-21 21:24:36,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=531, PETRI_PLACES=167, PETRI_TRANSITIONS=91} [2024-06-21 21:24:36,992 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-21 21:24:36,992 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 91 transitions, 531 flow [2024-06-21 21:24:36,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:36,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:36,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:36,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-21 21:24:36,993 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:36,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1324123062, now seen corresponding path program 23 times [2024-06-21 21:24:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:36,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134178616] [2024-06-21 21:24:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:38,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134178616] [2024-06-21 21:24:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134178616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:38,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:38,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:38,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100661135] [2024-06-21 21:24:38,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:38,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:38,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:38,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:38,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:38,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:38,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 91 transitions, 531 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:38,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:38,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:38,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:38,735 INFO L124 PetriNetUnfolderBase]: 228/493 cut-off events. [2024-06-21 21:24:38,735 INFO L125 PetriNetUnfolderBase]: For 20971/20971 co-relation queries the response was YES. [2024-06-21 21:24:38,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1702 conditions, 493 events. 228/493 cut-off events. For 20971/20971 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2386 event pairs, 59 based on Foata normal form. 6/498 useless extension candidates. Maximal degree in co-relation 1630. Up to 409 conditions per place. [2024-06-21 21:24:38,737 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 11 changer transitions 10/107 dead transitions. [2024-06-21 21:24:38,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 107 transitions, 777 flow [2024-06-21 21:24:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 21:24:38,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 21:24:38,738 INFO L175 Difference]: Start difference. First operand has 167 places, 91 transitions, 531 flow. Second operand 12 states and 144 transitions. [2024-06-21 21:24:38,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 107 transitions, 777 flow [2024-06-21 21:24:38,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 107 transitions, 755 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-21 21:24:38,763 INFO L231 Difference]: Finished difference. Result has 156 places, 88 transitions, 520 flow [2024-06-21 21:24:38,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=520, PETRI_PLACES=156, PETRI_TRANSITIONS=88} [2024-06-21 21:24:38,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 125 predicate places. [2024-06-21 21:24:38,764 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 88 transitions, 520 flow [2024-06-21 21:24:38,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:38,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:38,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-21 21:24:38,765 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:38,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1278450418, now seen corresponding path program 24 times [2024-06-21 21:24:38,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:38,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968906802] [2024-06-21 21:24:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:38,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:38,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:39,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968906802] [2024-06-21 21:24:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968906802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:39,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:39,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790273585] [2024-06-21 21:24:39,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:39,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:39,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:39,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:39,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:39,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 88 transitions, 520 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:39,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:39,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:39,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:40,157 INFO L124 PetriNetUnfolderBase]: 221/480 cut-off events. [2024-06-21 21:24:40,157 INFO L125 PetriNetUnfolderBase]: For 17598/17598 co-relation queries the response was YES. [2024-06-21 21:24:40,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1644 conditions, 480 events. 221/480 cut-off events. For 17598/17598 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2299 event pairs, 57 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 1577. Up to 391 conditions per place. [2024-06-21 21:24:40,159 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 78 selfloop transitions, 8 changer transitions 15/105 dead transitions. [2024-06-21 21:24:40,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 105 transitions, 764 flow [2024-06-21 21:24:40,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:40,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 21:24:40,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 21:24:40,160 INFO L175 Difference]: Start difference. First operand has 156 places, 88 transitions, 520 flow. Second operand 12 states and 144 transitions. [2024-06-21 21:24:40,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 105 transitions, 764 flow [2024-06-21 21:24:40,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 105 transitions, 736 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:40,183 INFO L231 Difference]: Finished difference. Result has 152 places, 83 transitions, 489 flow [2024-06-21 21:24:40,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=489, PETRI_PLACES=152, PETRI_TRANSITIONS=83} [2024-06-21 21:24:40,184 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-21 21:24:40,184 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 83 transitions, 489 flow [2024-06-21 21:24:40,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:40,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:40,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:40,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-21 21:24:40,185 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:40,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:40,185 INFO L85 PathProgramCache]: Analyzing trace with hash 997520114, now seen corresponding path program 25 times [2024-06-21 21:24:40,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:40,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713885194] [2024-06-21 21:24:40,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:40,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:41,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:41,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:41,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713885194] [2024-06-21 21:24:41,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713885194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:41,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:41,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:41,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045971286] [2024-06-21 21:24:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:41,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:41,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:41,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:41,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 83 transitions, 489 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:41,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:41,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:41,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:41,651 INFO L124 PetriNetUnfolderBase]: 209/456 cut-off events. [2024-06-21 21:24:41,652 INFO L125 PetriNetUnfolderBase]: For 16326/16326 co-relation queries the response was YES. [2024-06-21 21:24:41,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1560 conditions, 456 events. 209/456 cut-off events. For 16326/16326 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2133 event pairs, 51 based on Foata normal form. 6/461 useless extension candidates. Maximal degree in co-relation 1495. Up to 357 conditions per place. [2024-06-21 21:24:41,654 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 73 selfloop transitions, 6 changer transitions 19/102 dead transitions. [2024-06-21 21:24:41,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 102 transitions, 731 flow [2024-06-21 21:24:41,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:41,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-21 21:24:41,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-21 21:24:41,655 INFO L175 Difference]: Start difference. First operand has 152 places, 83 transitions, 489 flow. Second operand 12 states and 145 transitions. [2024-06-21 21:24:41,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 102 transitions, 731 flow [2024-06-21 21:24:41,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 102 transitions, 705 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:41,673 INFO L231 Difference]: Finished difference. Result has 144 places, 77 transitions, 451 flow [2024-06-21 21:24:41,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=451, PETRI_PLACES=144, PETRI_TRANSITIONS=77} [2024-06-21 21:24:41,673 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-21 21:24:41,674 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 77 transitions, 451 flow [2024-06-21 21:24:41,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:41,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:41,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:41,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-21 21:24:41,674 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:41,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:41,674 INFO L85 PathProgramCache]: Analyzing trace with hash 960414240, now seen corresponding path program 26 times [2024-06-21 21:24:41,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:41,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090631083] [2024-06-21 21:24:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:41,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:42,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:42,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:42,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090631083] [2024-06-21 21:24:42,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090631083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:42,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:42,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:42,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942886634] [2024-06-21 21:24:42,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:42,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:42,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:42,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:42,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:42,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:42,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 77 transitions, 451 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:42,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:42,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:42,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:43,144 INFO L124 PetriNetUnfolderBase]: 190/419 cut-off events. [2024-06-21 21:24:43,144 INFO L125 PetriNetUnfolderBase]: For 13928/13928 co-relation queries the response was YES. [2024-06-21 21:24:43,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 419 events. 190/419 cut-off events. For 13928/13928 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1897 event pairs, 43 based on Foata normal form. 6/424 useless extension candidates. Maximal degree in co-relation 1371. Up to 311 conditions per place. [2024-06-21 21:24:43,146 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 3 changer transitions 27/97 dead transitions. [2024-06-21 21:24:43,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 97 transitions, 685 flow [2024-06-21 21:24:43,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:43,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:43,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-21 21:24:43,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-21 21:24:43,147 INFO L175 Difference]: Start difference. First operand has 144 places, 77 transitions, 451 flow. Second operand 12 states and 144 transitions. [2024-06-21 21:24:43,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 97 transitions, 685 flow [2024-06-21 21:24:43,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 97 transitions, 661 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:43,158 INFO L231 Difference]: Finished difference. Result has 134 places, 69 transitions, 399 flow [2024-06-21 21:24:43,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=399, PETRI_PLACES=134, PETRI_TRANSITIONS=69} [2024-06-21 21:24:43,158 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-06-21 21:24:43,158 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 69 transitions, 399 flow [2024-06-21 21:24:43,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:43,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:43,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:43,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-21 21:24:43,159 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:43,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:43,159 INFO L85 PathProgramCache]: Analyzing trace with hash 2098955684, now seen corresponding path program 27 times [2024-06-21 21:24:43,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:43,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341235349] [2024-06-21 21:24:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:43,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:44,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:44,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:44,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341235349] [2024-06-21 21:24:44,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341235349] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:44,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:44,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:44,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54182068] [2024-06-21 21:24:44,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:44,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:44,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:44,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:44,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:44,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:44,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 69 transitions, 399 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:44,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:44,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:44,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:44,376 INFO L124 PetriNetUnfolderBase]: 162/357 cut-off events. [2024-06-21 21:24:44,377 INFO L125 PetriNetUnfolderBase]: For 11176/11180 co-relation queries the response was YES. [2024-06-21 21:24:44,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1227 conditions, 357 events. 162/357 cut-off events. For 11176/11180 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1546 event pairs, 41 based on Foata normal form. 10/366 useless extension candidates. Maximal degree in co-relation 1171. Up to 236 conditions per place. [2024-06-21 21:24:44,378 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 47 selfloop transitions, 18 changer transitions 14/83 dead transitions. [2024-06-21 21:24:44,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 83 transitions, 587 flow [2024-06-21 21:24:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-21 21:24:44,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-21 21:24:44,379 INFO L175 Difference]: Start difference. First operand has 134 places, 69 transitions, 399 flow. Second operand 12 states and 143 transitions. [2024-06-21 21:24:44,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 83 transitions, 587 flow [2024-06-21 21:24:44,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 83 transitions, 556 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:44,388 INFO L231 Difference]: Finished difference. Result has 119 places, 64 transitions, 383 flow [2024-06-21 21:24:44,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=383, PETRI_PLACES=119, PETRI_TRANSITIONS=64} [2024-06-21 21:24:44,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-21 21:24:44,389 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 64 transitions, 383 flow [2024-06-21 21:24:44,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:44,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:44,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:44,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-21 21:24:44,389 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:44,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:44,390 INFO L85 PathProgramCache]: Analyzing trace with hash -810801120, now seen corresponding path program 28 times [2024-06-21 21:24:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839613934] [2024-06-21 21:24:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:45,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:45,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:45,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839613934] [2024-06-21 21:24:45,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839613934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:45,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:45,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:45,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441887182] [2024-06-21 21:24:45,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:45,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:45,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:45,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:45,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:45,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:45,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 64 transitions, 383 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:45,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:45,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:45,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:45,763 INFO L124 PetriNetUnfolderBase]: 150/331 cut-off events. [2024-06-21 21:24:45,764 INFO L125 PetriNetUnfolderBase]: For 8292/8292 co-relation queries the response was YES. [2024-06-21 21:24:45,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 331 events. 150/331 cut-off events. For 8292/8292 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1391 event pairs, 39 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1092. Up to 218 conditions per place. [2024-06-21 21:24:45,765 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 18 changer transitions 13/78 dead transitions. [2024-06-21 21:24:45,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 78 transitions, 561 flow [2024-06-21 21:24:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:45,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:45,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 21:24:45,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 21:24:45,766 INFO L175 Difference]: Start difference. First operand has 119 places, 64 transitions, 383 flow. Second operand 12 states and 141 transitions. [2024-06-21 21:24:45,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 78 transitions, 561 flow [2024-06-21 21:24:45,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 78 transitions, 513 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:45,775 INFO L231 Difference]: Finished difference. Result has 112 places, 60 transitions, 356 flow [2024-06-21 21:24:45,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=356, PETRI_PLACES=112, PETRI_TRANSITIONS=60} [2024-06-21 21:24:45,775 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-21 21:24:45,775 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 60 transitions, 356 flow [2024-06-21 21:24:45,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:45,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:45,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:45,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-21 21:24:45,776 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:45,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:45,776 INFO L85 PathProgramCache]: Analyzing trace with hash 211098840, now seen corresponding path program 29 times [2024-06-21 21:24:45,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:45,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23169429] [2024-06-21 21:24:45,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:45,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:45,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:46,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:46,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:46,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23169429] [2024-06-21 21:24:46,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23169429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:46,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:46,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:46,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974866341] [2024-06-21 21:24:46,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:46,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:46,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:46,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:46,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:46,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:46,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 60 transitions, 356 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:46,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:46,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:46,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:47,128 INFO L124 PetriNetUnfolderBase]: 139/310 cut-off events. [2024-06-21 21:24:47,128 INFO L125 PetriNetUnfolderBase]: For 7491/7495 co-relation queries the response was YES. [2024-06-21 21:24:47,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 310 events. 139/310 cut-off events. For 7491/7495 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1274 event pairs, 33 based on Foata normal form. 10/319 useless extension candidates. Maximal degree in co-relation 1018. Up to 178 conditions per place. [2024-06-21 21:24:47,130 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 41 selfloop transitions, 16 changer transitions 14/75 dead transitions. [2024-06-21 21:24:47,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 75 transitions, 530 flow [2024-06-21 21:24:47,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:47,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-21 21:24:47,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-21 21:24:47,131 INFO L175 Difference]: Start difference. First operand has 112 places, 60 transitions, 356 flow. Second operand 12 states and 143 transitions. [2024-06-21 21:24:47,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 75 transitions, 530 flow [2024-06-21 21:24:47,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 75 transitions, 486 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:47,138 INFO L231 Difference]: Finished difference. Result has 106 places, 54 transitions, 317 flow [2024-06-21 21:24:47,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=317, PETRI_PLACES=106, PETRI_TRANSITIONS=54} [2024-06-21 21:24:47,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-21 21:24:47,138 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 54 transitions, 317 flow [2024-06-21 21:24:47,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:47,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:47,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:47,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-21 21:24:47,139 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:47,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:47,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1536137786, now seen corresponding path program 30 times [2024-06-21 21:24:47,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:47,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026404720] [2024-06-21 21:24:47,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:47,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:48,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:48,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026404720] [2024-06-21 21:24:48,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026404720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:48,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:48,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:48,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703621012] [2024-06-21 21:24:48,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:48,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:48,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:48,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:48,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:48,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:48,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 54 transitions, 317 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:48,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:48,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:48,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:48,439 INFO L124 PetriNetUnfolderBase]: 123/274 cut-off events. [2024-06-21 21:24:48,439 INFO L125 PetriNetUnfolderBase]: For 6226/6230 co-relation queries the response was YES. [2024-06-21 21:24:48,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 274 events. 123/274 cut-off events. For 6226/6230 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1063 event pairs, 33 based on Foata normal form. 10/283 useless extension candidates. Maximal degree in co-relation 906. Up to 174 conditions per place. [2024-06-21 21:24:48,440 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 33 selfloop transitions, 14 changer transitions 17/68 dead transitions. [2024-06-21 21:24:48,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 68 transitions, 475 flow [2024-06-21 21:24:48,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:48,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:48,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-21 21:24:48,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-21 21:24:48,441 INFO L175 Difference]: Start difference. First operand has 106 places, 54 transitions, 317 flow. Second operand 12 states and 141 transitions. [2024-06-21 21:24:48,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 68 transitions, 475 flow [2024-06-21 21:24:48,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 68 transitions, 433 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-21 21:24:48,448 INFO L231 Difference]: Finished difference. Result has 97 places, 47 transitions, 274 flow [2024-06-21 21:24:48,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=274, PETRI_PLACES=97, PETRI_TRANSITIONS=47} [2024-06-21 21:24:48,449 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-21 21:24:48,449 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 47 transitions, 274 flow [2024-06-21 21:24:48,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:48,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:48,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:48,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-21 21:24:48,449 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:48,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:48,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1867887346, now seen corresponding path program 31 times [2024-06-21 21:24:48,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:48,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582800463] [2024-06-21 21:24:48,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:48,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:49,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:49,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:49,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582800463] [2024-06-21 21:24:49,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582800463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:49,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:49,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:49,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752373972] [2024-06-21 21:24:49,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:49,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:49,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:49,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:49,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 47 transitions, 274 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:49,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:49,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:49,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:49,776 INFO L124 PetriNetUnfolderBase]: 109/240 cut-off events. [2024-06-21 21:24:49,776 INFO L125 PetriNetUnfolderBase]: For 4760/4764 co-relation queries the response was YES. [2024-06-21 21:24:49,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 831 conditions, 240 events. 109/240 cut-off events. For 4760/4764 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 876 event pairs, 31 based on Foata normal form. 10/249 useless extension candidates. Maximal degree in co-relation 790. Up to 156 conditions per place. [2024-06-21 21:24:49,777 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 13 changer transitions 14/61 dead transitions. [2024-06-21 21:24:49,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 418 flow [2024-06-21 21:24:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 21:24:49,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 21:24:49,778 INFO L175 Difference]: Start difference. First operand has 97 places, 47 transitions, 274 flow. Second operand 12 states and 139 transitions. [2024-06-21 21:24:49,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 418 flow [2024-06-21 21:24:49,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 378 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:49,782 INFO L231 Difference]: Finished difference. Result has 86 places, 42 transitions, 239 flow [2024-06-21 21:24:49,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=239, PETRI_PLACES=86, PETRI_TRANSITIONS=42} [2024-06-21 21:24:49,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-21 21:24:49,783 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 42 transitions, 239 flow [2024-06-21 21:24:49,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:49,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:49,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:49,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-21 21:24:49,783 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:49,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:49,783 INFO L85 PathProgramCache]: Analyzing trace with hash -647193116, now seen corresponding path program 32 times [2024-06-21 21:24:49,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:49,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957504775] [2024-06-21 21:24:49,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:49,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:50,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:50,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957504775] [2024-06-21 21:24:50,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957504775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:50,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:50,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:50,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337172747] [2024-06-21 21:24:50,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:50,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:50,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:51,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:51,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 42 transitions, 239 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:51,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:51,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:51,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:51,246 INFO L124 PetriNetUnfolderBase]: 97/214 cut-off events. [2024-06-21 21:24:51,246 INFO L125 PetriNetUnfolderBase]: For 3192/3192 co-relation queries the response was YES. [2024-06-21 21:24:51,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 214 events. 97/214 cut-off events. For 3192/3192 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 730 event pairs, 29 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 692. Up to 138 conditions per place. [2024-06-21 21:24:51,247 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 11 changer transitions 13/56 dead transitions. [2024-06-21 21:24:51,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 56 transitions, 373 flow [2024-06-21 21:24:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 21:24:51,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 21:24:51,248 INFO L175 Difference]: Start difference. First operand has 86 places, 42 transitions, 239 flow. Second operand 12 states and 139 transitions. [2024-06-21 21:24:51,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 56 transitions, 373 flow [2024-06-21 21:24:51,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 56 transitions, 329 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-21 21:24:51,250 INFO L231 Difference]: Finished difference. Result has 78 places, 38 transitions, 202 flow [2024-06-21 21:24:51,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=202, PETRI_PLACES=78, PETRI_TRANSITIONS=38} [2024-06-21 21:24:51,251 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-21 21:24:51,251 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 38 transitions, 202 flow [2024-06-21 21:24:51,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:51,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:51,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:51,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-21 21:24:51,251 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:51,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:51,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1727511862, now seen corresponding path program 33 times [2024-06-21 21:24:51,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:51,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081785712] [2024-06-21 21:24:51,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:51,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:52,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:52,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081785712] [2024-06-21 21:24:52,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081785712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:52,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:52,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372154798] [2024-06-21 21:24:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:52,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:52,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:52,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:52,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:52,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:52,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 38 transitions, 202 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:52,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:52,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:52,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:52,589 INFO L124 PetriNetUnfolderBase]: 86/193 cut-off events. [2024-06-21 21:24:52,590 INFO L125 PetriNetUnfolderBase]: For 2656/2656 co-relation queries the response was YES. [2024-06-21 21:24:52,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 644 conditions, 193 events. 86/193 cut-off events. For 2656/2656 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 619 event pairs, 25 based on Foata normal form. 6/198 useless extension candidates. Maximal degree in co-relation 610. Up to 112 conditions per place. [2024-06-21 21:24:52,590 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 24 selfloop transitions, 8 changer transitions 17/53 dead transitions. [2024-06-21 21:24:52,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 53 transitions, 332 flow [2024-06-21 21:24:52,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-21 21:24:52,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-21 21:24:52,591 INFO L175 Difference]: Start difference. First operand has 78 places, 38 transitions, 202 flow. Second operand 12 states and 139 transitions. [2024-06-21 21:24:52,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 53 transitions, 332 flow [2024-06-21 21:24:52,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 53 transitions, 304 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-21 21:24:52,594 INFO L231 Difference]: Finished difference. Result has 73 places, 32 transitions, 167 flow [2024-06-21 21:24:52,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=61, 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=12, PETRI_FLOW=167, PETRI_PLACES=73, PETRI_TRANSITIONS=32} [2024-06-21 21:24:52,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-21 21:24:52,594 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 32 transitions, 167 flow [2024-06-21 21:24:52,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:52,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:52,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:52,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-21 21:24:52,595 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:52,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:52,595 INFO L85 PathProgramCache]: Analyzing trace with hash 143391474, now seen corresponding path program 34 times [2024-06-21 21:24:52,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:52,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521394801] [2024-06-21 21:24:52,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:52,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:53,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521394801] [2024-06-21 21:24:53,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521394801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:53,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:53,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:53,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349738949] [2024-06-21 21:24:53,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:53,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:53,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:53,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:53,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:53,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 32 transitions, 167 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:53,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:53,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:53,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:54,022 INFO L124 PetriNetUnfolderBase]: 70/159 cut-off events. [2024-06-21 21:24:54,022 INFO L125 PetriNetUnfolderBase]: For 2166/2166 co-relation queries the response was YES. [2024-06-21 21:24:54,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 159 events. 70/159 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 455 event pairs, 23 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 506. Up to 94 conditions per place. [2024-06-21 21:24:54,023 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 21 selfloop transitions, 8 changer transitions 13/46 dead transitions. [2024-06-21 21:24:54,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 46 transitions, 281 flow [2024-06-21 21:24:54,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:54,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:54,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 21:24:54,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 21:24:54,024 INFO L175 Difference]: Start difference. First operand has 73 places, 32 transitions, 167 flow. Second operand 12 states and 136 transitions. [2024-06-21 21:24:54,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 46 transitions, 281 flow [2024-06-21 21:24:54,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 252 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-21 21:24:54,025 INFO L231 Difference]: Finished difference. Result has 64 places, 28 transitions, 139 flow [2024-06-21 21:24:54,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=139, PETRI_PLACES=64, PETRI_TRANSITIONS=28} [2024-06-21 21:24:54,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-21 21:24:54,026 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 28 transitions, 139 flow [2024-06-21 21:24:54,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:54,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:54,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:54,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-21 21:24:54,026 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:54,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:54,027 INFO L85 PathProgramCache]: Analyzing trace with hash -26716310, now seen corresponding path program 35 times [2024-06-21 21:24:54,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:54,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187673227] [2024-06-21 21:24:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:54,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:55,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:55,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:55,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187673227] [2024-06-21 21:24:55,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187673227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:55,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:55,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:55,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635812243] [2024-06-21 21:24:55,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:55,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:55,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:55,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:55,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:55,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:55,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 28 transitions, 139 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:55,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:55,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:55,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:55,560 INFO L124 PetriNetUnfolderBase]: 59/138 cut-off events. [2024-06-21 21:24:55,561 INFO L125 PetriNetUnfolderBase]: For 1532/1532 co-relation queries the response was YES. [2024-06-21 21:24:55,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 457 conditions, 138 events. 59/138 cut-off events. For 1532/1532 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 356 event pairs, 19 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 428. Up to 68 conditions per place. [2024-06-21 21:24:55,561 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 17 selfloop transitions, 6 changer transitions 16/43 dead transitions. [2024-06-21 21:24:55,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 249 flow [2024-06-21 21:24:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-21 21:24:55,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-21 21:24:55,562 INFO L175 Difference]: Start difference. First operand has 64 places, 28 transitions, 139 flow. Second operand 12 states and 136 transitions. [2024-06-21 21:24:55,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 249 flow [2024-06-21 21:24:55,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 43 transitions, 225 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-21 21:24:55,563 INFO L231 Difference]: Finished difference. Result has 58 places, 23 transitions, 108 flow [2024-06-21 21:24:55,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=108, PETRI_PLACES=58, PETRI_TRANSITIONS=23} [2024-06-21 21:24:55,563 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-21 21:24:55,563 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 23 transitions, 108 flow [2024-06-21 21:24:55,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:55,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-21 21:24:55,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:55,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-21 21:24:55,563 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-21 21:24:55,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-21 21:24:55,564 INFO L85 PathProgramCache]: Analyzing trace with hash -137538830, now seen corresponding path program 36 times [2024-06-21 21:24:55,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-21 21:24:55,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264029164] [2024-06-21 21:24:55,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-21 21:24:55,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-21 21:24:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-21 21:24:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-21 21:24:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-21 21:24:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264029164] [2024-06-21 21:24:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264029164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-21 21:24:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-21 21:24:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-21 21:24:56,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988375436] [2024-06-21 21:24:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-21 21:24:56,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-21 21:24:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-21 21:24:56,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-21 21:24:56,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-21 21:24:56,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-21 21:24:56,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 23 transitions, 108 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:56,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-21 21:24:56,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-21 21:24:56,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-21 21:24:56,960 INFO L124 PetriNetUnfolderBase]: 29/76 cut-off events. [2024-06-21 21:24:56,960 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-21 21:24:56,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 76 events. 29/76 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 190. Up to 24 conditions per place. [2024-06-21 21:24:56,960 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-06-21 21:24:56,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 34 transitions, 164 flow [2024-06-21 21:24:56,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-21 21:24:56,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-21 21:24:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-21 21:24:56,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-21 21:24:56,961 INFO L175 Difference]: Start difference. First operand has 58 places, 23 transitions, 108 flow. Second operand 12 states and 127 transitions. [2024-06-21 21:24:56,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 34 transitions, 164 flow [2024-06-21 21:24:56,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 134 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-21 21:24:56,962 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-21 21:24:56,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-21 21:24:56,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-21 21:24:56,962 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-21 21:24:56,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 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) [2024-06-21 21:24:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-21 21:24:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-21 21:24:56,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-21 21:24:56,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-21 21:24:56,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-21 21:24:56,969 INFO L445 BasicCegarLoop]: Path program histogram: [38, 36, 35, 20, 18, 10, 9, 8, 7, 6, 5, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-21 21:24:56,972 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-21 21:24:56,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-21 21:24:56,976 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-21 21:24:56,976 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-21 21:24:56,977 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.06 09:24:56 BasicIcfg [2024-06-21 21:24:56,977 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-21 21:24:56,977 INFO L158 Benchmark]: Toolchain (without parser) took 299958.15ms. Allocated memory was 138.4MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 104.6MB in the beginning and 687.9MB in the end (delta: -583.4MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-06-21 21:24:56,980 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory was 67.7MB in the beginning and 67.6MB in the end (delta: 72.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 21:24:56,980 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-21 21:24:56,980 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.76ms. Allocated memory is still 138.4MB. Free memory was 103.8MB in the beginning and 71.0MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-21 21:24:56,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.40ms. Allocated memory is still 138.4MB. Free memory was 71.0MB in the beginning and 68.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-21 21:24:56,980 INFO L158 Benchmark]: Boogie Preprocessor took 51.32ms. Allocated memory is still 138.4MB. Free memory was 68.2MB in the beginning and 65.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-21 21:24:56,981 INFO L158 Benchmark]: RCFGBuilder took 744.52ms. Allocated memory is still 138.4MB. Free memory was 64.7MB in the beginning and 80.7MB in the end (delta: -16.0MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2024-06-21 21:24:56,981 INFO L158 Benchmark]: TraceAbstraction took 298618.25ms. Allocated memory was 138.4MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 79.5MB in the beginning and 687.9MB in the end (delta: -608.4MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2024-06-21 21:24:56,982 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 109.1MB. Free memory was 67.7MB in the beginning and 67.6MB in the end (delta: 72.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.19ms. Allocated memory is still 138.4MB. Free memory is still 110.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.76ms. Allocated memory is still 138.4MB. Free memory was 103.8MB in the beginning and 71.0MB in the end (delta: 32.8MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.40ms. Allocated memory is still 138.4MB. Free memory was 71.0MB in the beginning and 68.2MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.32ms. Allocated memory is still 138.4MB. Free memory was 68.2MB in the beginning and 65.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 744.52ms. Allocated memory is still 138.4MB. Free memory was 64.7MB in the beginning and 80.7MB in the end (delta: -16.0MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * TraceAbstraction took 298618.25ms. Allocated memory was 138.4MB in the beginning and 1.8GB in the end (delta: 1.6GB). Free memory was 79.5MB in the beginning and 687.9MB in the end (delta: -608.4MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: 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, 52 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: 298.5s, OverallIterations: 215, TraceHistogramMax: 1, PathProgramHistogramMax: 38, EmptinessCheckTime: 0.0s, AutomataDifference: 118.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14963 SdHoareTripleChecker+Valid, 47.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12719 mSDsluCounter, 10808 SdHoareTripleChecker+Invalid, 40.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10054 mSDsCounter, 2674 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89092 IncrementalHoareTripleChecker+Invalid, 91766 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2674 mSolverCounterUnsat, 754 mSDtfsCounter, 89092 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2481 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2481 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5683 ImplicationChecksByTransitivity, 68.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2207occurred in iteration=167, InterpolantAutomatonStates: 2295, 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: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 177.0s InterpolantComputationTime, 3788 NumberOfCodeBlocks, 3788 NumberOfCodeBlocksAsserted, 215 NumberOfCheckSat, 3573 ConstructedInterpolants, 0 QuantifiedInterpolants, 169361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 215 InterpolantComputations, 215 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! [2024-06-21 21:24:57,028 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