./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/mix000.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cde23df1 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/mix000.opt.i ./goblint.2024-05-21_14-57-05.files/protection/mix000.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 11:45:59,296 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 11:45:59,368 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 11:45:59,373 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 11:45:59,373 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 11:45:59,398 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 11:45:59,399 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 11:45:59,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 11:45:59,399 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 11:45:59,402 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 11:45:59,403 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 11:45:59,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 11:45:59,404 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 11:45:59,405 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 11:45:59,405 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 11:45:59,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 11:45:59,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 11:45:59,405 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 11:45:59,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 11:45:59,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 11:45:59,406 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 11:45:59,406 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 11:45:59,407 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 11:45:59,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 11:45:59,407 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 11:45:59,407 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 11:45:59,407 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 11:45:59,408 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 11:45:59,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 11:45:59,408 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 11:45:59,409 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 11:45:59,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 11:45:59,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:45:59,410 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 11:45:59,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 11:45:59,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 11:45:59,410 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 11:45:59,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 11:45:59,411 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 11:45:59,411 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 11:45:59,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 11:45:59,411 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 11:45:59,411 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 11:45:59,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 11:45:59,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 11:45:59,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 11:45:59,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 11:45:59,637 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 11:45:59,637 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 11:45:59,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-14 11:46:00,805 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 11:46:01,020 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 11:46:01,023 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.opt.i [2024-06-14 11:46:01,044 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3eb00f29/327efd2e3da04f11ad0873d49ff61e12/FLAG939258036 [2024-06-14 11:46:01,057 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3eb00f29/327efd2e3da04f11ad0873d49ff61e12 [2024-06-14 11:46:01,059 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 11:46:01,059 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 11:46:01,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/mix000.opt.yml/witness.yml [2024-06-14 11:46:01,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 11:46:01,182 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 11:46:01,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 11:46:01,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 11:46:01,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 11:46:01,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:46:01" (1/2) ... [2024-06-14 11:46:01,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c87dc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01, skipping insertion in model container [2024-06-14 11:46:01,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 11:46:01" (1/2) ... [2024-06-14 11:46:01,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4fd7fabc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 11:46:01, skipping insertion in model container [2024-06-14 11:46:01,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:46:01" (2/2) ... [2024-06-14 11:46:01,190 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c87dc25 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01, skipping insertion in model container [2024-06-14 11:46:01,190 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:46:01" (2/2) ... [2024-06-14 11:46:01,191 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 11:46:01,288 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 11:46:01,289 INFO L97 edCorrectnessWitness]: Location invariant before [L830-L830] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 11:46:01,290 INFO L97 edCorrectnessWitness]: Location invariant before [L829-L829] ((((((((((((((((! multithreaded || x$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || ((0 <= x$mem_tmp && x$mem_tmp <= 1) && (x$mem_tmp == 0 || x$mem_tmp == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= x$w_buff0 && x$w_buff0 <= 1) && (x$w_buff0 == 0 || x$w_buff0 == 1)))) && (! multithreaded || ((0 <= x$w_buff1 && x$w_buff1 <= 1) && (x$w_buff1 == 0 || x$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EBX && __unbuffered_p0_EBX <= 1) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) [2024-06-14 11:46:01,290 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 11:46:01,290 INFO L106 edCorrectnessWitness]: ghost_update [L827-L827] multithreaded = 1; [2024-06-14 11:46:01,328 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 11:46:01,679 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:46:01,687 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 11:46:01,770 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 11:46:01,798 INFO L206 MainTranslator]: Completed translation [2024-06-14 11:46:01,800 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01 WrapperNode [2024-06-14 11:46:01,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 11:46:01,801 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 11:46:01,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 11:46:01,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 11:46:01,807 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 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,832 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 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,871 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-14 11:46:01,882 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 11:46:01,883 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 11:46:01,883 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 11:46:01,883 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 11:46:01,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,902 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,927 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]. [2024-06-14 11:46:01,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,942 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,948 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,956 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 11:46:01,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 11:46:01,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 11:46:01,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 11:46:01,963 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (1/1) ... [2024-06-14 11:46:01,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 11:46:01,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 11:46:02,026 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) [2024-06-14 11:46:02,053 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 [2024-06-14 11:46:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 11:46:02,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 11:46:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 11:46:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 11:46:02,079 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 11:46:02,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 11:46:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 11:46:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 11:46:02,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 11:46:02,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 11:46:02,082 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-14 11:46:02,208 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 11:46:02,210 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 11:46:02,527 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 11:46:02,528 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 11:46:02,705 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 11:46:02,705 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 11:46:02,708 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:46:02 BoogieIcfgContainer [2024-06-14 11:46:02,708 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 11:46:02,710 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 11:46:02,710 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 11:46:02,712 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 11:46:02,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 11:46:01" (1/4) ... [2024-06-14 11:46:02,713 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a984161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 11:46:02, skipping insertion in model container [2024-06-14 11:46:02,713 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 11:46:01" (2/4) ... [2024-06-14 11:46:02,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a984161 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:46:02, skipping insertion in model container [2024-06-14 11:46:02,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 11:46:01" (3/4) ... [2024-06-14 11:46:02,718 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a984161 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 11:46:02, skipping insertion in model container [2024-06-14 11:46:02,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 11:46:02" (4/4) ... [2024-06-14 11:46:02,720 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.opt.i [2024-06-14 11:46:02,735 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 11:46:02,735 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 11:46:02,735 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 11:46:02,779 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 11:46:02,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 11:46:02,839 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-14 11:46:02,839 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:46:02,841 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 43 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. [2024-06-14 11:46:02,841 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-14 11:46:02,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-14 11:46:02,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 11:46:02,861 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;@4a8f6df4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 11:46:02,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 11:46:02,867 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 11:46:02,867 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2024-06-14 11:46:02,867 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 11:46:02,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:02,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 11:46:02,869 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)] === [2024-06-14 11:46:02,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:02,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1642904383, now seen corresponding path program 1 times [2024-06-14 11:46:02,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:02,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012008277] [2024-06-14 11:46:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:02,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:03,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:03,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012008277] [2024-06-14 11:46:03,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012008277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:03,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:03,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 11:46:03,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129904173] [2024-06-14 11:46:03,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:03,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 11:46:03,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:03,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 11:46:03,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 11:46:03,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-14 11:46:03,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:03,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:03,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-14 11:46:03,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:04,120 INFO L124 PetriNetUnfolderBase]: 131/262 cut-off events. [2024-06-14 11:46:04,120 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 11:46:04,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 262 events. 131/262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1025 event pairs, 75 based on Foata normal form. 1/252 useless extension candidates. Maximal degree in co-relation 506. Up to 235 conditions per place. [2024-06-14 11:46:04,126 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 22 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-14 11:46:04,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 119 flow [2024-06-14 11:46:04,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 11:46:04,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 11:46:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-06-14 11:46:04,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59375 [2024-06-14 11:46:04,137 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 57 transitions. [2024-06-14 11:46:04,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 119 flow [2024-06-14 11:46:04,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 11:46:04,140 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-14 11:46:04,142 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} [2024-06-14 11:46:04,144 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-14 11:46:04,145 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-14 11:46:04,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:04,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:04,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:04,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 11:46:04,146 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)] === [2024-06-14 11:46:04,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:04,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1717139950, now seen corresponding path program 1 times [2024-06-14 11:46:04,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:04,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231165162] [2024-06-14 11:46:04,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:04,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:04,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:04,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231165162] [2024-06-14 11:46:04,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231165162] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:04,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:04,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 11:46:04,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986694033] [2024-06-14 11:46:04,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:04,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 11:46:04,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:04,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 11:46:04,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 11:46:04,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 11:46:04,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:04,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:04,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 11:46:04,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:05,032 INFO L124 PetriNetUnfolderBase]: 186/342 cut-off events. [2024-06-14 11:46:05,033 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2024-06-14 11:46:05,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786 conditions, 342 events. 186/342 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1273 event pairs, 94 based on Foata normal form. 2/341 useless extension candidates. Maximal degree in co-relation 771. Up to 319 conditions per place. [2024-06-14 11:46:05,036 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 5 changer transitions 0/36 dead transitions. [2024-06-14 11:46:05,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 165 flow [2024-06-14 11:46:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 11:46:05,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 11:46:05,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-06-14 11:46:05,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234375 [2024-06-14 11:46:05,038 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 67 transitions. [2024-06-14 11:46:05,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 165 flow [2024-06-14 11:46:05,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 162 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 11:46:05,040 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-14 11:46:05,040 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} [2024-06-14 11:46:05,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-14 11:46:05,041 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-14 11:46:05,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:05,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:05,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:05,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 11:46:05,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:46:05,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:05,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1683688252, now seen corresponding path program 1 times [2024-06-14 11:46:05,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:05,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228341201] [2024-06-14 11:46:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:05,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:05,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:05,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:05,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228341201] [2024-06-14 11:46:05,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228341201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:05,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:05,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-14 11:46:05,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537948473] [2024-06-14 11:46:05,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:05,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-14 11:46:05,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:05,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-14 11:46:05,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-14 11:46:05,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 11:46:05,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:05,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:05,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 11:46:05,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:05,897 INFO L124 PetriNetUnfolderBase]: 180/332 cut-off events. [2024-06-14 11:46:05,897 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-06-14 11:46:05,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 332 events. 180/332 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1220 event pairs, 52 based on Foata normal form. 4/334 useless extension candidates. Maximal degree in co-relation 827. Up to 291 conditions per place. [2024-06-14 11:46:05,899 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 33 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2024-06-14 11:46:05,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 217 flow [2024-06-14 11:46:05,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:46:05,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:46:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-06-14 11:46:05,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-06-14 11:46:05,901 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 82 transitions. [2024-06-14 11:46:05,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 217 flow [2024-06-14 11:46:05,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 43 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 11:46:05,903 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-14 11:46:05,903 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=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-14 11:46:05,904 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-14 11:46:05,904 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-14 11:46:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:05,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:05,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:05,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 11:46:05,905 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:46:05,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:05,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1621724491, now seen corresponding path program 1 times [2024-06-14 11:46:05,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:05,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946468227] [2024-06-14 11:46:05,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:05,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:06,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:06,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:06,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946468227] [2024-06-14 11:46:06,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946468227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:06,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:06,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 11:46:06,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992241431] [2024-06-14 11:46:06,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:06,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 11:46:06,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:06,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 11:46:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 11:46:06,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 11:46:06,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:06,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:06,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 11:46:06,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:06,720 INFO L124 PetriNetUnfolderBase]: 137/284 cut-off events. [2024-06-14 11:46:06,721 INFO L125 PetriNetUnfolderBase]: For 265/265 co-relation queries the response was YES. [2024-06-14 11:46:06,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767 conditions, 284 events. 137/284 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1097 event pairs, 57 based on Foata normal form. 1/283 useless extension candidates. Maximal degree in co-relation 749. Up to 243 conditions per place. [2024-06-14 11:46:06,723 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 25 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-14 11:46:06,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 201 flow [2024-06-14 11:46:06,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 11:46:06,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 11:46:06,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-14 11:46:06,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2024-06-14 11:46:06,727 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 74 transitions. [2024-06-14 11:46:06,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 201 flow [2024-06-14 11:46:06,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 186 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:06,730 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-14 11:46:06,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-14 11:46:06,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-14 11:46:06,732 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-14 11:46:06,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:06,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:06,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:06,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 11:46:06,732 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:46:06,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash 2129581982, now seen corresponding path program 1 times [2024-06-14 11:46:06,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:06,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258093811] [2024-06-14 11:46:06,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:06,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:07,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:07,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258093811] [2024-06-14 11:46:07,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258093811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:07,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:07,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:07,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197944948] [2024-06-14 11:46:07,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:07,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:07,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:07,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:07,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:07,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 11:46:07,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 133 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:07,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:07,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 11:46:07,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:08,121 INFO L124 PetriNetUnfolderBase]: 174/321 cut-off events. [2024-06-14 11:46:08,122 INFO L125 PetriNetUnfolderBase]: For 449/449 co-relation queries the response was YES. [2024-06-14 11:46:08,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 942 conditions, 321 events. 174/321 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1150 event pairs, 29 based on Foata normal form. 4/323 useless extension candidates. Maximal degree in co-relation 922. Up to 262 conditions per place. [2024-06-14 11:46:08,124 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/51 dead transitions. [2024-06-14 11:46:08,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 271 flow [2024-06-14 11:46:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:08,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:08,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-14 11:46:08,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-14 11:46:08,125 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 7 states and 104 transitions. [2024-06-14 11:46:08,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 271 flow [2024-06-14 11:46:08,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 260 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:08,127 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 149 flow [2024-06-14 11:46:08,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=149, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-14 11:46:08,128 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-14 11:46:08,128 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 149 flow [2024-06-14 11:46:08,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:08,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:08,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:08,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 11:46:08,129 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)] === [2024-06-14 11:46:08,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:08,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1266149862, now seen corresponding path program 1 times [2024-06-14 11:46:08,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:08,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069570821] [2024-06-14 11:46:08,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:08,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:09,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:09,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:09,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069570821] [2024-06-14 11:46:09,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069570821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:09,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:09,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544667584] [2024-06-14 11:46:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:09,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:09,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-14 11:46:09,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:09,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:09,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-14 11:46:09,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:09,225 INFO L124 PetriNetUnfolderBase]: 129/268 cut-off events. [2024-06-14 11:46:09,225 INFO L125 PetriNetUnfolderBase]: For 515/515 co-relation queries the response was YES. [2024-06-14 11:46:09,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 268 events. 129/268 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1014 event pairs, 36 based on Foata normal form. 2/268 useless extension candidates. Maximal degree in co-relation 808. Up to 223 conditions per place. [2024-06-14 11:46:09,228 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 28 selfloop transitions, 8 changer transitions 0/42 dead transitions. [2024-06-14 11:46:09,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 42 transitions, 245 flow [2024-06-14 11:46:09,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:09,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-14 11:46:09,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-14 11:46:09,229 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 149 flow. Second operand 6 states and 86 transitions. [2024-06-14 11:46:09,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 42 transitions, 245 flow [2024-06-14 11:46:09,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 223 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:09,233 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 160 flow [2024-06-14 11:46:09,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=127, 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=160, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-14 11:46:09,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-14 11:46:09,235 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 160 flow [2024-06-14 11:46:09,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:09,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:09,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:09,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 11:46:09,236 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)] === [2024-06-14 11:46:09,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:09,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2075778054, now seen corresponding path program 1 times [2024-06-14 11:46:09,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:09,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308449375] [2024-06-14 11:46:09,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:09,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:09,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:09,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308449375] [2024-06-14 11:46:09,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308449375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:09,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:09,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:09,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075852305] [2024-06-14 11:46:09,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:09,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:09,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:09,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:09,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:09,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:09,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 160 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:09,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:09,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:09,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:10,006 INFO L124 PetriNetUnfolderBase]: 171/317 cut-off events. [2024-06-14 11:46:10,006 INFO L125 PetriNetUnfolderBase]: For 745/745 co-relation queries the response was YES. [2024-06-14 11:46:10,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1051 conditions, 317 events. 171/317 cut-off events. For 745/745 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1133 event pairs, 43 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1028. Up to 291 conditions per place. [2024-06-14 11:46:10,021 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 35 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-14 11:46:10,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 46 transitions, 276 flow [2024-06-14 11:46:10,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:10,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:10,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 78 transitions. [2024-06-14 11:46:10,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:46:10,023 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 160 flow. Second operand 6 states and 78 transitions. [2024-06-14 11:46:10,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 46 transitions, 276 flow [2024-06-14 11:46:10,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 259 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:10,024 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 176 flow [2024-06-14 11:46:10,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=176, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-14 11:46:10,025 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-14 11:46:10,025 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 176 flow [2024-06-14 11:46:10,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:10,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:10,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:10,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 11:46:10,026 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)] === [2024-06-14 11:46:10,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash 595932692, now seen corresponding path program 2 times [2024-06-14 11:46:10,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:10,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064368453] [2024-06-14 11:46:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:10,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:10,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:10,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:10,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064368453] [2024-06-14 11:46:10,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064368453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:10,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:10,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 11:46:10,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310562226] [2024-06-14 11:46:10,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:10,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 11:46:10,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:10,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 11:46:10,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 11:46:10,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:10,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 176 flow. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:10,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:10,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:10,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:10,892 INFO L124 PetriNetUnfolderBase]: 169/315 cut-off events. [2024-06-14 11:46:10,892 INFO L125 PetriNetUnfolderBase]: For 967/970 co-relation queries the response was YES. [2024-06-14 11:46:10,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 315 events. 169/315 cut-off events. For 967/970 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1135 event pairs, 47 based on Foata normal form. 3/315 useless extension candidates. Maximal degree in co-relation 1070. Up to 282 conditions per place. [2024-06-14 11:46:10,894 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-14 11:46:10,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 286 flow [2024-06-14 11:46:10,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 11:46:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 11:46:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 77 transitions. [2024-06-14 11:46:10,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-14 11:46:10,896 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 176 flow. Second operand 6 states and 77 transitions. [2024-06-14 11:46:10,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 286 flow [2024-06-14 11:46:10,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 269 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:10,898 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 202 flow [2024-06-14 11:46:10,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=202, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2024-06-14 11:46:10,899 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 19 predicate places. [2024-06-14 11:46:10,899 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 202 flow [2024-06-14 11:46:10,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:10,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:10,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:10,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 11:46:10,900 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)] === [2024-06-14 11:46:10,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash -103213844, now seen corresponding path program 1 times [2024-06-14 11:46:10,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:10,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761800973] [2024-06-14 11:46:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:11,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:11,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761800973] [2024-06-14 11:46:11,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761800973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:11,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:11,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:11,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760187653] [2024-06-14 11:46:11,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:11,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:11,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:11,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:11,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:11,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:11,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:11,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:11,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:11,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:11,762 INFO L124 PetriNetUnfolderBase]: 187/349 cut-off events. [2024-06-14 11:46:11,762 INFO L125 PetriNetUnfolderBase]: For 1292/1292 co-relation queries the response was YES. [2024-06-14 11:46:11,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 349 events. 187/349 cut-off events. For 1292/1292 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1285 event pairs, 43 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 1255. Up to 298 conditions per place. [2024-06-14 11:46:11,764 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 42 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-14 11:46:11,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 405 flow [2024-06-14 11:46:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:11,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:46:11,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 11:46:11,766 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 202 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:46:11,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 405 flow [2024-06-14 11:46:11,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 61 transitions, 374 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:11,769 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 277 flow [2024-06-14 11:46:11,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=277, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2024-06-14 11:46:11,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-14 11:46:11,770 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 277 flow [2024-06-14 11:46:11,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:11,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:11,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:11,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 11:46:11,771 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)] === [2024-06-14 11:46:11,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 75241350, now seen corresponding path program 2 times [2024-06-14 11:46:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:11,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901919062] [2024-06-14 11:46:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:11,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:12,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:12,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901919062] [2024-06-14 11:46:12,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901919062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:12,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:12,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:12,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760071353] [2024-06-14 11:46:12,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:12,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:12,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:12,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:12,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:12,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:12,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 277 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:12,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:12,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:12,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:12,716 INFO L124 PetriNetUnfolderBase]: 193/361 cut-off events. [2024-06-14 11:46:12,716 INFO L125 PetriNetUnfolderBase]: For 1672/1672 co-relation queries the response was YES. [2024-06-14 11:46:12,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1431 conditions, 361 events. 193/361 cut-off events. For 1672/1672 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1354 event pairs, 42 based on Foata normal form. 2/361 useless extension candidates. Maximal degree in co-relation 1403. Up to 300 conditions per place. [2024-06-14 11:46:12,719 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 42 selfloop transitions, 18 changer transitions 0/63 dead transitions. [2024-06-14 11:46:12,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 63 transitions, 453 flow [2024-06-14 11:46:12,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:12,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 11:46:12,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-14 11:46:12,720 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 277 flow. Second operand 7 states and 92 transitions. [2024-06-14 11:46:12,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 63 transitions, 453 flow [2024-06-14 11:46:12,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 429 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:12,724 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 318 flow [2024-06-14 11:46:12,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=318, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2024-06-14 11:46:12,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-06-14 11:46:12,726 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 318 flow [2024-06-14 11:46:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:12,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:12,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:12,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 11:46:12,726 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)] === [2024-06-14 11:46:12,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:12,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392142, now seen corresponding path program 3 times [2024-06-14 11:46:12,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:12,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582730954] [2024-06-14 11:46:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:13,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:13,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582730954] [2024-06-14 11:46:13,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582730954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:13,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:13,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:13,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242159959] [2024-06-14 11:46:13,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:13,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:13,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:13,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:13,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:13,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:13,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 318 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:13,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:13,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:13,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:13,722 INFO L124 PetriNetUnfolderBase]: 199/373 cut-off events. [2024-06-14 11:46:13,723 INFO L125 PetriNetUnfolderBase]: For 2144/2144 co-relation queries the response was YES. [2024-06-14 11:46:13,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 373 events. 199/373 cut-off events. For 2144/2144 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1427 event pairs, 44 based on Foata normal form. 2/373 useless extension candidates. Maximal degree in co-relation 1533. Up to 299 conditions per place. [2024-06-14 11:46:13,725 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 40 selfloop transitions, 20 changer transitions 0/63 dead transitions. [2024-06-14 11:46:13,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 490 flow [2024-06-14 11:46:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:13,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:13,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-06-14 11:46:13,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-14 11:46:13,728 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 318 flow. Second operand 7 states and 92 transitions. [2024-06-14 11:46:13,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 490 flow [2024-06-14 11:46:13,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 63 transitions, 443 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:13,732 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 340 flow [2024-06-14 11:46:13,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=340, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2024-06-14 11:46:13,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 31 predicate places. [2024-06-14 11:46:13,733 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 340 flow [2024-06-14 11:46:13,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:13,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:13,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:13,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 11:46:13,734 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)] === [2024-06-14 11:46:13,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1087392359, now seen corresponding path program 1 times [2024-06-14 11:46:13,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:13,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167272767] [2024-06-14 11:46:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:13,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:13,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:14,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:14,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:14,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167272767] [2024-06-14 11:46:14,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167272767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:14,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:14,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:14,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175250348] [2024-06-14 11:46:14,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:14,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:14,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:14,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:14,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:14,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:14,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 340 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:14,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:14,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:14,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:14,814 INFO L124 PetriNetUnfolderBase]: 202/378 cut-off events. [2024-06-14 11:46:14,814 INFO L125 PetriNetUnfolderBase]: For 2086/2086 co-relation queries the response was YES. [2024-06-14 11:46:14,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1573 conditions, 378 events. 202/378 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1439 event pairs, 41 based on Foata normal form. 1/377 useless extension candidates. Maximal degree in co-relation 1543. Up to 337 conditions per place. [2024-06-14 11:46:14,817 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 49 selfloop transitions, 12 changer transitions 0/64 dead transitions. [2024-06-14 11:46:14,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 502 flow [2024-06-14 11:46:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:14,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 11:46:14,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-14 11:46:14,818 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 340 flow. Second operand 7 states and 88 transitions. [2024-06-14 11:46:14,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 502 flow [2024-06-14 11:46:14,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 64 transitions, 453 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:14,823 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 334 flow [2024-06-14 11:46:14,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=334, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2024-06-14 11:46:14,825 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-14 11:46:14,825 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 334 flow [2024-06-14 11:46:14,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:14,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:14,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:14,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 11:46:14,826 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)] === [2024-06-14 11:46:14,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:14,827 INFO L85 PathProgramCache]: Analyzing trace with hash 80955270, now seen corresponding path program 4 times [2024-06-14 11:46:14,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:14,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309155851] [2024-06-14 11:46:14,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:14,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:15,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:15,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309155851] [2024-06-14 11:46:15,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309155851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:15,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:15,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955914252] [2024-06-14 11:46:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:15,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:15,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 334 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:15,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:15,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:15,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:15,820 INFO L124 PetriNetUnfolderBase]: 203/383 cut-off events. [2024-06-14 11:46:15,820 INFO L125 PetriNetUnfolderBase]: For 2417/2420 co-relation queries the response was YES. [2024-06-14 11:46:15,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1606 conditions, 383 events. 203/383 cut-off events. For 2417/2420 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1491 event pairs, 49 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1575. Up to 294 conditions per place. [2024-06-14 11:46:15,822 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 38 selfloop transitions, 24 changer transitions 0/65 dead transitions. [2024-06-14 11:46:15,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 504 flow [2024-06-14 11:46:15,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:15,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-06-14 11:46:15,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:46:15,824 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 334 flow. Second operand 7 states and 91 transitions. [2024-06-14 11:46:15,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 504 flow [2024-06-14 11:46:15,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 65 transitions, 477 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:15,827 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 384 flow [2024-06-14 11:46:15,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=384, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-06-14 11:46:15,827 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 35 predicate places. [2024-06-14 11:46:15,827 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 384 flow [2024-06-14 11:46:15,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:15,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:15,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:15,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 11:46:15,828 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)] === [2024-06-14 11:46:15,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:15,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361729, now seen corresponding path program 2 times [2024-06-14 11:46:15,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:15,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367351490] [2024-06-14 11:46:15,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:15,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:16,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:16,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:16,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367351490] [2024-06-14 11:46:16,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367351490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:16,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:16,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:16,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230182141] [2024-06-14 11:46:16,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:16,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:16,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:16,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:16,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:16,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:16,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:16,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:16,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:16,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:17,099 INFO L124 PetriNetUnfolderBase]: 206/388 cut-off events. [2024-06-14 11:46:17,099 INFO L125 PetriNetUnfolderBase]: For 2792/2795 co-relation queries the response was YES. [2024-06-14 11:46:17,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 388 events. 206/388 cut-off events. For 2792/2795 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1509 event pairs, 44 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 1684. Up to 338 conditions per place. [2024-06-14 11:46:17,102 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 48 selfloop transitions, 15 changer transitions 0/66 dead transitions. [2024-06-14 11:46:17,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 548 flow [2024-06-14 11:46:17,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:17,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:17,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2024-06-14 11:46:17,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38839285714285715 [2024-06-14 11:46:17,103 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 384 flow. Second operand 7 states and 87 transitions. [2024-06-14 11:46:17,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 548 flow [2024-06-14 11:46:17,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 487 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:17,106 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 376 flow [2024-06-14 11:46:17,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-06-14 11:46:17,107 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-14 11:46:17,107 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 376 flow [2024-06-14 11:46:17,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:17,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:17,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:17,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 11:46:17,107 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)] === [2024-06-14 11:46:17,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:17,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1294312709, now seen corresponding path program 3 times [2024-06-14 11:46:17,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:17,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097787589] [2024-06-14 11:46:17,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:17,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:17,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:17,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097787589] [2024-06-14 11:46:17,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097787589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:17,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:17,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 11:46:17,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004376408] [2024-06-14 11:46:17,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:17,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 11:46:17,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:17,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 11:46:17,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 11:46:17,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:17,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 376 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:17,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:17,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:17,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:18,100 INFO L124 PetriNetUnfolderBase]: 204/385 cut-off events. [2024-06-14 11:46:18,101 INFO L125 PetriNetUnfolderBase]: For 2985/2988 co-relation queries the response was YES. [2024-06-14 11:46:18,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 385 events. 204/385 cut-off events. For 2985/2988 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1503 event pairs, 44 based on Foata normal form. 3/384 useless extension candidates. Maximal degree in co-relation 1673. Up to 326 conditions per place. [2024-06-14 11:46:18,103 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 47 selfloop transitions, 20 changer transitions 0/70 dead transitions. [2024-06-14 11:46:18,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 562 flow [2024-06-14 11:46:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 11:46:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 11:46:18,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-14 11:46:18,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39285714285714285 [2024-06-14 11:46:18,105 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 376 flow. Second operand 7 states and 88 transitions. [2024-06-14 11:46:18,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 562 flow [2024-06-14 11:46:18,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 525 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:18,108 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 427 flow [2024-06-14 11:46:18,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2024-06-14 11:46:18,109 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-14 11:46:18,109 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 427 flow [2024-06-14 11:46:18,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:18,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:18,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:18,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 11:46:18,110 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)] === [2024-06-14 11:46:18,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:18,110 INFO L85 PathProgramCache]: Analyzing trace with hash -390541517, now seen corresponding path program 1 times [2024-06-14 11:46:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:18,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872280955] [2024-06-14 11:46:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:18,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:18,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:18,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872280955] [2024-06-14 11:46:18,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872280955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:18,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:18,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:18,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608111442] [2024-06-14 11:46:18,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:18,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:18,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:18,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:19,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:19,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 427 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:19,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:19,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:19,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:19,305 INFO L124 PetriNetUnfolderBase]: 202/381 cut-off events. [2024-06-14 11:46:19,305 INFO L125 PetriNetUnfolderBase]: For 3322/3322 co-relation queries the response was YES. [2024-06-14 11:46:19,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 381 events. 202/381 cut-off events. For 3322/3322 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1481 event pairs, 40 based on Foata normal form. 1/380 useless extension candidates. Maximal degree in co-relation 1717. Up to 312 conditions per place. [2024-06-14 11:46:19,308 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 18 changer transitions 0/80 dead transitions. [2024-06-14 11:46:19,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 80 transitions, 653 flow [2024-06-14 11:46:19,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:19,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:19,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 11:46:19,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:46:19,309 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 427 flow. Second operand 8 states and 104 transitions. [2024-06-14 11:46:19,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 80 transitions, 653 flow [2024-06-14 11:46:19,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 80 transitions, 623 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:19,313 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 466 flow [2024-06-14 11:46:19,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=466, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2024-06-14 11:46:19,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-14 11:46:19,314 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 466 flow [2024-06-14 11:46:19,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:19,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:19,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:19,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 11:46:19,315 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)] === [2024-06-14 11:46:19,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:19,315 INFO L85 PathProgramCache]: Analyzing trace with hash -655222065, now seen corresponding path program 1 times [2024-06-14 11:46:19,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:19,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482384492] [2024-06-14 11:46:19,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:19,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:20,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:20,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482384492] [2024-06-14 11:46:20,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482384492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:20,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:20,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:20,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705179118] [2024-06-14 11:46:20,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:20,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:20,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:20,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:20,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:20,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:20,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 466 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:20,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:20,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:20,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:20,553 INFO L124 PetriNetUnfolderBase]: 208/391 cut-off events. [2024-06-14 11:46:20,554 INFO L125 PetriNetUnfolderBase]: For 3905/3905 co-relation queries the response was YES. [2024-06-14 11:46:20,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1878 conditions, 391 events. 208/391 cut-off events. For 3905/3905 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1535 event pairs, 39 based on Foata normal form. 2/391 useless extension candidates. Maximal degree in co-relation 1841. Up to 316 conditions per place. [2024-06-14 11:46:20,557 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 21 changer transitions 0/81 dead transitions. [2024-06-14 11:46:20,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 81 transitions, 688 flow [2024-06-14 11:46:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:46:20,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 11:46:20,570 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 466 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:46:20,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 81 transitions, 688 flow [2024-06-14 11:46:20,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 81 transitions, 635 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:20,577 INFO L231 Difference]: Finished difference. Result has 78 places, 67 transitions, 492 flow [2024-06-14 11:46:20,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=492, PETRI_PLACES=78, PETRI_TRANSITIONS=67} [2024-06-14 11:46:20,578 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-14 11:46:20,578 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 67 transitions, 492 flow [2024-06-14 11:46:20,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:20,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:20,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:20,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 11:46:20,579 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)] === [2024-06-14 11:46:20,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:20,579 INFO L85 PathProgramCache]: Analyzing trace with hash -650580435, now seen corresponding path program 2 times [2024-06-14 11:46:20,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:20,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814097957] [2024-06-14 11:46:20,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:20,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:21,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:21,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814097957] [2024-06-14 11:46:21,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814097957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:21,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:21,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:21,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808521781] [2024-06-14 11:46:21,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:21,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:21,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:21,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:21,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:21,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:21,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 67 transitions, 492 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:21,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:21,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:21,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:21,843 INFO L124 PetriNetUnfolderBase]: 214/401 cut-off events. [2024-06-14 11:46:21,843 INFO L125 PetriNetUnfolderBase]: For 4534/4534 co-relation queries the response was YES. [2024-06-14 11:46:21,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 401 events. 214/401 cut-off events. For 4534/4534 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1572 event pairs, 41 based on Foata normal form. 2/401 useless extension candidates. Maximal degree in co-relation 1970. Up to 319 conditions per place. [2024-06-14 11:46:21,846 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 56 selfloop transitions, 23 changer transitions 0/82 dead transitions. [2024-06-14 11:46:21,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 82 transitions, 718 flow [2024-06-14 11:46:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:21,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:46:21,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 11:46:21,847 INFO L175 Difference]: Start difference. First operand has 78 places, 67 transitions, 492 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:46:21,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 82 transitions, 718 flow [2024-06-14 11:46:21,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 663 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:21,852 INFO L231 Difference]: Finished difference. Result has 80 places, 70 transitions, 525 flow [2024-06-14 11:46:21,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=525, PETRI_PLACES=80, PETRI_TRANSITIONS=70} [2024-06-14 11:46:21,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-14 11:46:21,853 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 70 transitions, 525 flow [2024-06-14 11:46:21,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:21,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:21,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:21,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 11:46:21,854 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)] === [2024-06-14 11:46:21,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:21,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1957835775, now seen corresponding path program 3 times [2024-06-14 11:46:21,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:21,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281527856] [2024-06-14 11:46:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:21,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:22,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:22,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281527856] [2024-06-14 11:46:22,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281527856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:22,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:22,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155121146] [2024-06-14 11:46:22,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:22,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:22,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:22,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:22,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:22,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:22,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 70 transitions, 525 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:22,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:22,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:22,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:23,002 INFO L124 PetriNetUnfolderBase]: 217/406 cut-off events. [2024-06-14 11:46:23,002 INFO L125 PetriNetUnfolderBase]: For 5020/5020 co-relation queries the response was YES. [2024-06-14 11:46:23,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 406 events. 217/406 cut-off events. For 5020/5020 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1605 event pairs, 41 based on Foata normal form. 1/405 useless extension candidates. Maximal degree in co-relation 2068. Up to 308 conditions per place. [2024-06-14 11:46:23,005 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 29 changer transitions 0/83 dead transitions. [2024-06-14 11:46:23,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 739 flow [2024-06-14 11:46:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:23,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:23,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-14 11:46:23,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40234375 [2024-06-14 11:46:23,006 INFO L175 Difference]: Start difference. First operand has 80 places, 70 transitions, 525 flow. Second operand 8 states and 103 transitions. [2024-06-14 11:46:23,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 739 flow [2024-06-14 11:46:23,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 673 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:23,011 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 546 flow [2024-06-14 11:46:23,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=546, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2024-06-14 11:46:23,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-14 11:46:23,012 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 546 flow [2024-06-14 11:46:23,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:23,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:23,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:23,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 11:46:23,013 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)] === [2024-06-14 11:46:23,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:23,013 INFO L85 PathProgramCache]: Analyzing trace with hash -650573677, now seen corresponding path program 1 times [2024-06-14 11:46:23,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:23,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169939739] [2024-06-14 11:46:23,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:23,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:23,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:23,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:23,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169939739] [2024-06-14 11:46:23,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169939739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:23,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:23,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:23,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909453758] [2024-06-14 11:46:23,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:23,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:23,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:23,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:23,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:24,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:24,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 546 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:24,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:24,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:24,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:24,223 INFO L124 PetriNetUnfolderBase]: 220/411 cut-off events. [2024-06-14 11:46:24,223 INFO L125 PetriNetUnfolderBase]: For 5426/5426 co-relation queries the response was YES. [2024-06-14 11:46:24,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 411 events. 220/411 cut-off events. For 5426/5426 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1629 event pairs, 38 based on Foata normal form. 1/410 useless extension candidates. Maximal degree in co-relation 2143. Up to 365 conditions per place. [2024-06-14 11:46:24,226 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2024-06-14 11:46:24,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 85 transitions, 758 flow [2024-06-14 11:46:24,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:24,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-14 11:46:24,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 11:46:24,228 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 546 flow. Second operand 8 states and 98 transitions. [2024-06-14 11:46:24,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 85 transitions, 758 flow [2024-06-14 11:46:24,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 85 transitions, 687 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:24,234 INFO L231 Difference]: Finished difference. Result has 84 places, 74 transitions, 528 flow [2024-06-14 11:46:24,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=84, PETRI_TRANSITIONS=74} [2024-06-14 11:46:24,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-14 11:46:24,235 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 74 transitions, 528 flow [2024-06-14 11:46:24,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:24,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:24,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:24,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 11:46:24,236 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)] === [2024-06-14 11:46:24,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1460708909, now seen corresponding path program 4 times [2024-06-14 11:46:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:24,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972168142] [2024-06-14 11:46:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:24,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:25,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:25,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:25,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972168142] [2024-06-14 11:46:25,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972168142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:25,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:25,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:25,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006230736] [2024-06-14 11:46:25,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:25,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:25,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:25,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:25,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:25,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:25,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 74 transitions, 528 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:25,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:25,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:25,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:25,464 INFO L124 PetriNetUnfolderBase]: 226/422 cut-off events. [2024-06-14 11:46:25,464 INFO L125 PetriNetUnfolderBase]: For 6147/6150 co-relation queries the response was YES. [2024-06-14 11:46:25,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 422 events. 226/422 cut-off events. For 6147/6150 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1680 event pairs, 46 based on Foata normal form. 2/419 useless extension candidates. Maximal degree in co-relation 2216. Up to 327 conditions per place. [2024-06-14 11:46:25,467 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 27 changer transitions 0/87 dead transitions. [2024-06-14 11:46:25,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 87 transitions, 776 flow [2024-06-14 11:46:25,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:25,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:25,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 102 transitions. [2024-06-14 11:46:25,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 11:46:25,468 INFO L175 Difference]: Start difference. First operand has 84 places, 74 transitions, 528 flow. Second operand 8 states and 102 transitions. [2024-06-14 11:46:25,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 87 transitions, 776 flow [2024-06-14 11:46:25,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 87 transitions, 739 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:25,474 INFO L231 Difference]: Finished difference. Result has 86 places, 77 transitions, 597 flow [2024-06-14 11:46:25,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=597, PETRI_PLACES=86, PETRI_TRANSITIONS=77} [2024-06-14 11:46:25,474 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-14 11:46:25,474 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 77 transitions, 597 flow [2024-06-14 11:46:25,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:25,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:25,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:25,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 11:46:25,475 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)] === [2024-06-14 11:46:25,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715667, now seen corresponding path program 2 times [2024-06-14 11:46:25,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:25,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291463344] [2024-06-14 11:46:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:25,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:26,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:26,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:26,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291463344] [2024-06-14 11:46:26,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291463344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:26,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:26,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:26,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323080054] [2024-06-14 11:46:26,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:26,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:26,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:26,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:26,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:26,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:26,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 77 transitions, 597 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:26,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:26,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:26,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:26,706 INFO L124 PetriNetUnfolderBase]: 229/427 cut-off events. [2024-06-14 11:46:26,706 INFO L125 PetriNetUnfolderBase]: For 6718/6721 co-relation queries the response was YES. [2024-06-14 11:46:26,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2394 conditions, 427 events. 229/427 cut-off events. For 6718/6721 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1706 event pairs, 41 based on Foata normal form. 3/426 useless extension candidates. Maximal degree in co-relation 2352. Up to 374 conditions per place. [2024-06-14 11:46:26,711 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 17 changer transitions 0/88 dead transitions. [2024-06-14 11:46:26,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 813 flow [2024-06-14 11:46:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:26,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-14 11:46:26,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37890625 [2024-06-14 11:46:26,713 INFO L175 Difference]: Start difference. First operand has 86 places, 77 transitions, 597 flow. Second operand 8 states and 97 transitions. [2024-06-14 11:46:26,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 813 flow [2024-06-14 11:46:26,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 88 transitions, 729 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:26,737 INFO L231 Difference]: Finished difference. Result has 88 places, 79 transitions, 576 flow [2024-06-14 11:46:26,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=576, PETRI_PLACES=88, PETRI_TRANSITIONS=79} [2024-06-14 11:46:26,737 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-14 11:46:26,738 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 79 transitions, 576 flow [2024-06-14 11:46:26,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:26,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:26,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:26,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 11:46:26,738 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)] === [2024-06-14 11:46:26,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:26,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1469286547, now seen corresponding path program 3 times [2024-06-14 11:46:26,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:26,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027407790] [2024-06-14 11:46:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:26,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:27,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027407790] [2024-06-14 11:46:27,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027407790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:27,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:27,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483315518] [2024-06-14 11:46:27,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:27,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:27,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:27,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:27,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:27,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 79 transitions, 576 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:27,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:27,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:27,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:28,123 INFO L124 PetriNetUnfolderBase]: 232/431 cut-off events. [2024-06-14 11:46:28,123 INFO L125 PetriNetUnfolderBase]: For 7126/7126 co-relation queries the response was YES. [2024-06-14 11:46:28,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2412 conditions, 431 events. 232/431 cut-off events. For 7126/7126 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1712 event pairs, 42 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 2369. Up to 395 conditions per place. [2024-06-14 11:46:28,126 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 76 selfloop transitions, 12 changer transitions 0/91 dead transitions. [2024-06-14 11:46:28,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 91 transitions, 808 flow [2024-06-14 11:46:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:28,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:28,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-14 11:46:28,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37109375 [2024-06-14 11:46:28,127 INFO L175 Difference]: Start difference. First operand has 88 places, 79 transitions, 576 flow. Second operand 8 states and 95 transitions. [2024-06-14 11:46:28,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 91 transitions, 808 flow [2024-06-14 11:46:28,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 91 transitions, 761 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:28,134 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 603 flow [2024-06-14 11:46:28,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=603, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-06-14 11:46:28,134 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-14 11:46:28,134 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 603 flow [2024-06-14 11:46:28,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:28,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:28,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:28,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 11:46:28,135 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)] === [2024-06-14 11:46:28,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:28,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989629, now seen corresponding path program 5 times [2024-06-14 11:46:28,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:28,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731701382] [2024-06-14 11:46:28,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:28,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:28,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731701382] [2024-06-14 11:46:28,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731701382] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:28,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:28,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:28,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825051320] [2024-06-14 11:46:28,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:28,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:28,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:28,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:28,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:28,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:28,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 603 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:29,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:29,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:29,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:29,168 INFO L124 PetriNetUnfolderBase]: 235/437 cut-off events. [2024-06-14 11:46:29,168 INFO L125 PetriNetUnfolderBase]: For 7831/7834 co-relation queries the response was YES. [2024-06-14 11:46:29,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2489 conditions, 437 events. 235/437 cut-off events. For 7831/7834 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1749 event pairs, 46 based on Foata normal form. 1/433 useless extension candidates. Maximal degree in co-relation 2444. Up to 304 conditions per place. [2024-06-14 11:46:29,171 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 51 selfloop transitions, 43 changer transitions 0/97 dead transitions. [2024-06-14 11:46:29,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 925 flow [2024-06-14 11:46:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:29,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 11:46:29,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:46:29,174 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 603 flow. Second operand 8 states and 104 transitions. [2024-06-14 11:46:29,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 925 flow [2024-06-14 11:46:29,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 97 transitions, 878 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:29,182 INFO L231 Difference]: Finished difference. Result has 96 places, 87 transitions, 733 flow [2024-06-14 11:46:29,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=733, PETRI_PLACES=96, PETRI_TRANSITIONS=87} [2024-06-14 11:46:29,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-14 11:46:29,183 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 87 transitions, 733 flow [2024-06-14 11:46:29,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:29,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:29,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 11:46:29,183 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)] === [2024-06-14 11:46:29,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1468989877, now seen corresponding path program 4 times [2024-06-14 11:46:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500184264] [2024-06-14 11:46:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:30,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:30,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500184264] [2024-06-14 11:46:30,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500184264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:30,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:30,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:30,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099477173] [2024-06-14 11:46:30,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:30,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:30,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:30,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:30,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:30,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 87 transitions, 733 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:30,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:30,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:30,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:30,290 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-06-14 11:46:30,290 INFO L125 PetriNetUnfolderBase]: For 8503/8506 co-relation queries the response was YES. [2024-06-14 11:46:30,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2639 conditions, 434 events. 233/434 cut-off events. For 8503/8506 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1753 event pairs, 41 based on Foata normal form. 3/433 useless extension candidates. Maximal degree in co-relation 2591. Up to 360 conditions per place. [2024-06-14 11:46:30,293 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 27 changer transitions 0/98 dead transitions. [2024-06-14 11:46:30,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 98 transitions, 977 flow [2024-06-14 11:46:30,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:30,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-14 11:46:30,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 11:46:30,295 INFO L175 Difference]: Start difference. First operand has 96 places, 87 transitions, 733 flow. Second operand 8 states and 100 transitions. [2024-06-14 11:46:30,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 98 transitions, 977 flow [2024-06-14 11:46:30,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 98 transitions, 917 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:30,303 INFO L231 Difference]: Finished difference. Result has 100 places, 89 transitions, 764 flow [2024-06-14 11:46:30,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=100, PETRI_TRANSITIONS=89} [2024-06-14 11:46:30,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-06-14 11:46:30,304 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 89 transitions, 764 flow [2024-06-14 11:46:30,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:30,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:30,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:30,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 11:46:30,304 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)] === [2024-06-14 11:46:30,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1460715419, now seen corresponding path program 6 times [2024-06-14 11:46:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116122088] [2024-06-14 11:46:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:30,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:31,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116122088] [2024-06-14 11:46:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116122088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:31,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 11:46:31,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464695450] [2024-06-14 11:46:31,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:31,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 11:46:31,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 11:46:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 11:46:31,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:31,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 89 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:31,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:31,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:31,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:31,431 INFO L124 PetriNetUnfolderBase]: 231/431 cut-off events. [2024-06-14 11:46:31,432 INFO L125 PetriNetUnfolderBase]: For 8679/8682 co-relation queries the response was YES. [2024-06-14 11:46:31,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 431 events. 231/431 cut-off events. For 8679/8682 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1736 event pairs, 46 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 2602. Up to 330 conditions per place. [2024-06-14 11:46:31,435 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 66 selfloop transitions, 30 changer transitions 0/99 dead transitions. [2024-06-14 11:46:31,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 99 transitions, 1008 flow [2024-06-14 11:46:31,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 11:46:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 11:46:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-14 11:46:31,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:46:31,436 INFO L175 Difference]: Start difference. First operand has 100 places, 89 transitions, 764 flow. Second operand 8 states and 104 transitions. [2024-06-14 11:46:31,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 99 transitions, 1008 flow [2024-06-14 11:46:31,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 933 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 11:46:31,445 INFO L231 Difference]: Finished difference. Result has 102 places, 89 transitions, 754 flow [2024-06-14 11:46:31,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=102, PETRI_TRANSITIONS=89} [2024-06-14 11:46:31,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-14 11:46:31,445 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 89 transitions, 754 flow [2024-06-14 11:46:31,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:31,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:31,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:31,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 11:46:31,446 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)] === [2024-06-14 11:46:31,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:31,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1469297459, now seen corresponding path program 1 times [2024-06-14 11:46:31,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:31,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212870191] [2024-06-14 11:46:31,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:31,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:32,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:32,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212870191] [2024-06-14 11:46:32,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212870191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:32,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:32,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:32,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357584543] [2024-06-14 11:46:32,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:32,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:32,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:32,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:32,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:33,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-14 11:46:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 89 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:33,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:33,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-14 11:46:33,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:33,300 INFO L124 PetriNetUnfolderBase]: 213/408 cut-off events. [2024-06-14 11:46:33,301 INFO L125 PetriNetUnfolderBase]: For 8885/8890 co-relation queries the response was YES. [2024-06-14 11:46:33,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2485 conditions, 408 events. 213/408 cut-off events. For 8885/8890 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1663 event pairs, 39 based on Foata normal form. 7/412 useless extension candidates. Maximal degree in co-relation 2434. Up to 338 conditions per place. [2024-06-14 11:46:33,304 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 71 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-14 11:46:33,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 99 transitions, 946 flow [2024-06-14 11:46:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:33,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 11:46:33,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 11:46:33,305 INFO L175 Difference]: Start difference. First operand has 102 places, 89 transitions, 754 flow. Second operand 9 states and 112 transitions. [2024-06-14 11:46:33,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 99 transitions, 946 flow [2024-06-14 11:46:33,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 831 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 11:46:33,314 INFO L231 Difference]: Finished difference. Result has 103 places, 89 transitions, 669 flow [2024-06-14 11:46:33,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=639, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=669, PETRI_PLACES=103, PETRI_TRANSITIONS=89} [2024-06-14 11:46:33,314 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-14 11:46:33,314 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 89 transitions, 669 flow [2024-06-14 11:46:33,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:46:33,315 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:33,315 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:33,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 11:46:33,315 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)] === [2024-06-14 11:46:33,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:33,315 INFO L85 PathProgramCache]: Analyzing trace with hash -115114542, now seen corresponding path program 1 times [2024-06-14 11:46:33,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:33,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082015982] [2024-06-14 11:46:33,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:33,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082015982] [2024-06-14 11:46:34,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082015982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:34,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538596631] [2024-06-14 11:46:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:34,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:34,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:34,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:34,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:34,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:34,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 89 transitions, 669 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:34,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:34,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:34,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:34,706 INFO L124 PetriNetUnfolderBase]: 231/432 cut-off events. [2024-06-14 11:46:34,706 INFO L125 PetriNetUnfolderBase]: For 9146/9146 co-relation queries the response was YES. [2024-06-14 11:46:34,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 432 events. 231/432 cut-off events. For 9146/9146 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1736 event pairs, 36 based on Foata normal form. 1/431 useless extension candidates. Maximal degree in co-relation 2518. Up to 358 conditions per place. [2024-06-14 11:46:34,714 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 85 selfloop transitions, 20 changer transitions 0/108 dead transitions. [2024-06-14 11:46:34,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 108 transitions, 963 flow [2024-06-14 11:46:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:34,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 11:46:34,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 11:46:34,716 INFO L175 Difference]: Start difference. First operand has 103 places, 89 transitions, 669 flow. Second operand 9 states and 114 transitions. [2024-06-14 11:46:34,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 108 transitions, 963 flow [2024-06-14 11:46:34,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 108 transitions, 915 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 11:46:34,729 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 704 flow [2024-06-14 11:46:34,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=704, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-06-14 11:46:34,730 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-14 11:46:34,730 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 704 flow [2024-06-14 11:46:34,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:34,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:34,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:34,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 11:46:34,731 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)] === [2024-06-14 11:46:34,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:34,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1162954027, now seen corresponding path program 1 times [2024-06-14 11:46:34,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:34,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403592599] [2024-06-14 11:46:34,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:34,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:35,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:35,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:35,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403592599] [2024-06-14 11:46:35,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403592599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:35,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:35,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:35,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266686210] [2024-06-14 11:46:35,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:35,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:35,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:35,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:35,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:35,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 704 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:35,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:35,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:35,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:36,021 INFO L124 PetriNetUnfolderBase]: 237/442 cut-off events. [2024-06-14 11:46:36,022 INFO L125 PetriNetUnfolderBase]: For 10309/10309 co-relation queries the response was YES. [2024-06-14 11:46:36,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 442 events. 237/442 cut-off events. For 10309/10309 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1781 event pairs, 35 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2632. Up to 359 conditions per place. [2024-06-14 11:46:36,026 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 82 selfloop transitions, 24 changer transitions 0/109 dead transitions. [2024-06-14 11:46:36,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 109 transitions, 1018 flow [2024-06-14 11:46:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:36,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:36,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 11:46:36,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 11:46:36,028 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 704 flow. Second operand 9 states and 114 transitions. [2024-06-14 11:46:36,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 109 transitions, 1018 flow [2024-06-14 11:46:36,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 109 transitions, 951 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:36,038 INFO L231 Difference]: Finished difference. Result has 105 places, 94 transitions, 743 flow [2024-06-14 11:46:36,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=743, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2024-06-14 11:46:36,040 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-14 11:46:36,040 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 743 flow [2024-06-14 11:46:36,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:36,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:36,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:36,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 11:46:36,041 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)] === [2024-06-14 11:46:36,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:36,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1162953810, now seen corresponding path program 2 times [2024-06-14 11:46:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:36,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036686968] [2024-06-14 11:46:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:37,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:37,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036686968] [2024-06-14 11:46:37,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036686968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:37,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:37,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:37,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49537633] [2024-06-14 11:46:37,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:37,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:37,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:37,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:37,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:37,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:37,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 743 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:37,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:37,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:37,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:37,737 INFO L124 PetriNetUnfolderBase]: 240/449 cut-off events. [2024-06-14 11:46:37,738 INFO L125 PetriNetUnfolderBase]: For 10898/10898 co-relation queries the response was YES. [2024-06-14 11:46:37,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2795 conditions, 449 events. 240/449 cut-off events. For 10898/10898 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1824 event pairs, 35 based on Foata normal form. 1/448 useless extension candidates. Maximal degree in co-relation 2744. Up to 367 conditions per place. [2024-06-14 11:46:37,744 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 85 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-06-14 11:46:37,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 111 transitions, 1057 flow [2024-06-14 11:46:37,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:37,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:37,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:46:37,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 11:46:37,745 INFO L175 Difference]: Start difference. First operand has 105 places, 94 transitions, 743 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:46:37,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 111 transitions, 1057 flow [2024-06-14 11:46:37,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 111 transitions, 973 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:37,763 INFO L231 Difference]: Finished difference. Result has 107 places, 96 transitions, 754 flow [2024-06-14 11:46:37,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=754, PETRI_PLACES=107, PETRI_TRANSITIONS=96} [2024-06-14 11:46:37,764 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-14 11:46:37,764 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 96 transitions, 754 flow [2024-06-14 11:46:37,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:37,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:37,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:37,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 11:46:37,765 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)] === [2024-06-14 11:46:37,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:37,765 INFO L85 PathProgramCache]: Analyzing trace with hash -91168406, now seen corresponding path program 3 times [2024-06-14 11:46:37,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:37,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734511003] [2024-06-14 11:46:37,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:37,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:38,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:38,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734511003] [2024-06-14 11:46:38,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734511003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:38,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:38,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:38,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393569293] [2024-06-14 11:46:38,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:38,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:38,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:38,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:38,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:39,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:39,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 96 transitions, 754 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:39,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:39,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:39,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:39,530 INFO L124 PetriNetUnfolderBase]: 243/456 cut-off events. [2024-06-14 11:46:39,530 INFO L125 PetriNetUnfolderBase]: For 11860/11860 co-relation queries the response was YES. [2024-06-14 11:46:39,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2852 conditions, 456 events. 243/456 cut-off events. For 11860/11860 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1862 event pairs, 37 based on Foata normal form. 1/455 useless extension candidates. Maximal degree in co-relation 2800. Up to 365 conditions per place. [2024-06-14 11:46:39,533 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 83 selfloop transitions, 25 changer transitions 0/111 dead transitions. [2024-06-14 11:46:39,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 1078 flow [2024-06-14 11:46:39,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:39,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:39,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:46:39,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 11:46:39,535 INFO L175 Difference]: Start difference. First operand has 107 places, 96 transitions, 754 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:46:39,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 1078 flow [2024-06-14 11:46:39,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 111 transitions, 999 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:39,548 INFO L231 Difference]: Finished difference. Result has 109 places, 98 transitions, 778 flow [2024-06-14 11:46:39,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=778, PETRI_PLACES=109, PETRI_TRANSITIONS=98} [2024-06-14 11:46:39,548 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-14 11:46:39,548 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 98 transitions, 778 flow [2024-06-14 11:46:39,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:39,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:39,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:39,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 11:46:39,549 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)] === [2024-06-14 11:46:39,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:39,550 INFO L85 PathProgramCache]: Analyzing trace with hash -91168189, now seen corresponding path program 2 times [2024-06-14 11:46:39,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:39,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084443287] [2024-06-14 11:46:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:39,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:40,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:40,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:40,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084443287] [2024-06-14 11:46:40,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084443287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:40,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:40,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:40,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678894461] [2024-06-14 11:46:40,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:40,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:40,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:40,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:40,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:40,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:40,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 98 transitions, 778 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:40,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:40,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:40,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:40,841 INFO L124 PetriNetUnfolderBase]: 255/476 cut-off events. [2024-06-14 11:46:40,841 INFO L125 PetriNetUnfolderBase]: For 14080/14080 co-relation queries the response was YES. [2024-06-14 11:46:40,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 476 events. 255/476 cut-off events. For 14080/14080 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1963 event pairs, 37 based on Foata normal form. 4/478 useless extension candidates. Maximal degree in co-relation 2964. Up to 376 conditions per place. [2024-06-14 11:46:40,844 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 26 changer transitions 0/115 dead transitions. [2024-06-14 11:46:40,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 115 transitions, 1126 flow [2024-06-14 11:46:40,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 11:46:40,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 11:46:40,846 INFO L175 Difference]: Start difference. First operand has 109 places, 98 transitions, 778 flow. Second operand 9 states and 115 transitions. [2024-06-14 11:46:40,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 115 transitions, 1126 flow [2024-06-14 11:46:40,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 115 transitions, 1039 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:40,860 INFO L231 Difference]: Finished difference. Result has 111 places, 101 transitions, 803 flow [2024-06-14 11:46:40,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=803, PETRI_PLACES=111, PETRI_TRANSITIONS=101} [2024-06-14 11:46:40,861 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-06-14 11:46:40,861 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 101 transitions, 803 flow [2024-06-14 11:46:40,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:40,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:40,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:40,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 11:46:40,862 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)] === [2024-06-14 11:46:40,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:40,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1307046367, now seen corresponding path program 3 times [2024-06-14 11:46:40,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:40,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181276927] [2024-06-14 11:46:40,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:40,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:41,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:41,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181276927] [2024-06-14 11:46:41,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181276927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:41,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:41,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:41,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612285638] [2024-06-14 11:46:41,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:41,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:41,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:41,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:41,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:41,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:41,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 101 transitions, 803 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:41,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:41,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:41,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:42,162 INFO L124 PetriNetUnfolderBase]: 286/526 cut-off events. [2024-06-14 11:46:42,162 INFO L125 PetriNetUnfolderBase]: For 16655/16655 co-relation queries the response was YES. [2024-06-14 11:46:42,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3568 conditions, 526 events. 286/526 cut-off events. For 16655/16655 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2208 event pairs, 36 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 3514. Up to 371 conditions per place. [2024-06-14 11:46:42,165 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 40 changer transitions 0/126 dead transitions. [2024-06-14 11:46:42,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 126 transitions, 1389 flow [2024-06-14 11:46:42,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:42,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 11:46:42,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-14 11:46:42,167 INFO L175 Difference]: Start difference. First operand has 111 places, 101 transitions, 803 flow. Second operand 9 states and 120 transitions. [2024-06-14 11:46:42,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 126 transitions, 1389 flow [2024-06-14 11:46:42,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 1303 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:42,182 INFO L231 Difference]: Finished difference. Result has 114 places, 110 transitions, 979 flow [2024-06-14 11:46:42,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=979, PETRI_PLACES=114, PETRI_TRANSITIONS=110} [2024-06-14 11:46:42,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-14 11:46:42,183 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 110 transitions, 979 flow [2024-06-14 11:46:42,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:42,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:42,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:42,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 11:46:42,183 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)] === [2024-06-14 11:46:42,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:42,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1307046150, now seen corresponding path program 4 times [2024-06-14 11:46:42,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:42,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927665055] [2024-06-14 11:46:42,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:42,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:43,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:43,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927665055] [2024-06-14 11:46:43,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927665055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:43,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:43,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367530030] [2024-06-14 11:46:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:43,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:43,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:43,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:43,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:43,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:43,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 110 transitions, 979 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:43,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:43,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:43,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:43,587 INFO L124 PetriNetUnfolderBase]: 289/533 cut-off events. [2024-06-14 11:46:43,587 INFO L125 PetriNetUnfolderBase]: For 17677/17677 co-relation queries the response was YES. [2024-06-14 11:46:43,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3741 conditions, 533 events. 289/533 cut-off events. For 17677/17677 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2259 event pairs, 39 based on Foata normal form. 1/532 useless extension candidates. Maximal degree in co-relation 3685. Up to 418 conditions per place. [2024-06-14 11:46:43,591 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 33 changer transitions 0/123 dead transitions. [2024-06-14 11:46:43,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 1299 flow [2024-06-14 11:46:43,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:46:43,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 11:46:43,605 INFO L175 Difference]: Start difference. First operand has 114 places, 110 transitions, 979 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:46:43,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 1299 flow [2024-06-14 11:46:43,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 123 transitions, 1233 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-14 11:46:43,624 INFO L231 Difference]: Finished difference. Result has 119 places, 112 transitions, 1040 flow [2024-06-14 11:46:43,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=110, 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=1040, PETRI_PLACES=119, PETRI_TRANSITIONS=112} [2024-06-14 11:46:43,625 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-14 11:46:43,625 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 112 transitions, 1040 flow [2024-06-14 11:46:43,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:43,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:43,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:43,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 11:46:43,625 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)] === [2024-06-14 11:46:43,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:43,626 INFO L85 PathProgramCache]: Analyzing trace with hash -90958939, now seen corresponding path program 4 times [2024-06-14 11:46:43,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:43,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018487152] [2024-06-14 11:46:43,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:43,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:43,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:44,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:44,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:44,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018487152] [2024-06-14 11:46:44,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018487152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:44,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:44,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:44,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595334017] [2024-06-14 11:46:44,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:44,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:44,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:44,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:44,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:44,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:44,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 112 transitions, 1040 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:44,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:44,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:44,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:44,938 INFO L124 PetriNetUnfolderBase]: 287/530 cut-off events. [2024-06-14 11:46:44,939 INFO L125 PetriNetUnfolderBase]: For 17810/17810 co-relation queries the response was YES. [2024-06-14 11:46:44,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3691 conditions, 530 events. 287/530 cut-off events. For 17810/17810 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2242 event pairs, 38 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 3634. Up to 403 conditions per place. [2024-06-14 11:46:44,942 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 87 selfloop transitions, 39 changer transitions 0/129 dead transitions. [2024-06-14 11:46:44,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 129 transitions, 1389 flow [2024-06-14 11:46:44,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:44,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:44,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 11:46:44,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 11:46:44,962 INFO L175 Difference]: Start difference. First operand has 119 places, 112 transitions, 1040 flow. Second operand 9 states and 115 transitions. [2024-06-14 11:46:44,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 129 transitions, 1389 flow [2024-06-14 11:46:44,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 129 transitions, 1278 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:44,982 INFO L231 Difference]: Finished difference. Result has 122 places, 118 transitions, 1104 flow [2024-06-14 11:46:44,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=929, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1104, PETRI_PLACES=122, PETRI_TRANSITIONS=118} [2024-06-14 11:46:44,982 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 91 predicate places. [2024-06-14 11:46:44,982 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 118 transitions, 1104 flow [2024-06-14 11:46:44,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:44,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:44,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:44,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 11:46:44,983 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)] === [2024-06-14 11:46:44,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:44,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1307054086, now seen corresponding path program 1 times [2024-06-14 11:46:44,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:44,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138810410] [2024-06-14 11:46:44,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:44,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:46,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:46,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138810410] [2024-06-14 11:46:46,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138810410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:46,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:46,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:46,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469984731] [2024-06-14 11:46:46,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:46,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:46,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:46,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:46,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:46,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 118 transitions, 1104 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:46,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:46,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:46,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:46,339 INFO L124 PetriNetUnfolderBase]: 285/527 cut-off events. [2024-06-14 11:46:46,339 INFO L125 PetriNetUnfolderBase]: For 17731/17731 co-relation queries the response was YES. [2024-06-14 11:46:46,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3686 conditions, 527 events. 285/527 cut-off events. For 17731/17731 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2240 event pairs, 35 based on Foata normal form. 1/526 useless extension candidates. Maximal degree in co-relation 3627. Up to 470 conditions per place. [2024-06-14 11:46:46,343 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 112 selfloop transitions, 16 changer transitions 0/131 dead transitions. [2024-06-14 11:46:46,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 131 transitions, 1403 flow [2024-06-14 11:46:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:46:46,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:46:46,344 INFO L175 Difference]: Start difference. First operand has 122 places, 118 transitions, 1104 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:46:46,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 131 transitions, 1403 flow [2024-06-14 11:46:46,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 131 transitions, 1332 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:46,376 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 1081 flow [2024-06-14 11:46:46,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1081, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2024-06-14 11:46:46,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 95 predicate places. [2024-06-14 11:46:46,386 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 1081 flow [2024-06-14 11:46:46,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:46,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:46,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:46,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 11:46:46,387 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)] === [2024-06-14 11:46:46,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:46,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1962460705, now seen corresponding path program 5 times [2024-06-14 11:46:46,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:46,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071938715] [2024-06-14 11:46:46,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:46,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:47,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:47,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:47,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071938715] [2024-06-14 11:46:47,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071938715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:47,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:47,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:47,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507482617] [2024-06-14 11:46:47,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:47,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:47,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:47,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:47,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:47,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:47,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:47,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:47,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:47,651 INFO L124 PetriNetUnfolderBase]: 326/594 cut-off events. [2024-06-14 11:46:47,651 INFO L125 PetriNetUnfolderBase]: For 23577/23580 co-relation queries the response was YES. [2024-06-14 11:46:47,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4440 conditions, 594 events. 326/594 cut-off events. For 23577/23580 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2581 event pairs, 45 based on Foata normal form. 2/591 useless extension candidates. Maximal degree in co-relation 4379. Up to 442 conditions per place. [2024-06-14 11:46:47,655 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 102 selfloop transitions, 37 changer transitions 0/142 dead transitions. [2024-06-14 11:46:47,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 142 transitions, 1727 flow [2024-06-14 11:46:47,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 11:46:47,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-14 11:46:47,658 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 1081 flow. Second operand 9 states and 121 transitions. [2024-06-14 11:46:47,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 142 transitions, 1727 flow [2024-06-14 11:46:47,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 142 transitions, 1674 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:47,682 INFO L231 Difference]: Finished difference. Result has 129 places, 128 transitions, 1287 flow [2024-06-14 11:46:47,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1028, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1287, PETRI_PLACES=129, PETRI_TRANSITIONS=128} [2024-06-14 11:46:47,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 98 predicate places. [2024-06-14 11:46:47,683 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 128 transitions, 1287 flow [2024-06-14 11:46:47,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:47,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:47,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:47,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 11:46:47,683 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)] === [2024-06-14 11:46:47,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:47,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1615965538, now seen corresponding path program 5 times [2024-06-14 11:46:47,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:47,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341994917] [2024-06-14 11:46:47,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:47,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:48,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:48,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:48,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341994917] [2024-06-14 11:46:48,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341994917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:48,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:48,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:48,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525231571] [2024-06-14 11:46:48,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:48,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:48,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:48,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:48,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:49,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:49,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 128 transitions, 1287 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:49,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:49,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:49,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:49,406 INFO L124 PetriNetUnfolderBase]: 334/611 cut-off events. [2024-06-14 11:46:49,406 INFO L125 PetriNetUnfolderBase]: For 26508/26511 co-relation queries the response was YES. [2024-06-14 11:46:49,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 611 events. 334/611 cut-off events. For 26508/26511 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2689 event pairs, 46 based on Foata normal form. 1/607 useless extension candidates. Maximal degree in co-relation 4754. Up to 491 conditions per place. [2024-06-14 11:46:49,426 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 33 changer transitions 0/142 dead transitions. [2024-06-14 11:46:49,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 142 transitions, 1777 flow [2024-06-14 11:46:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:49,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:49,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 11:46:49,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993055555555556 [2024-06-14 11:46:49,441 INFO L175 Difference]: Start difference. First operand has 129 places, 128 transitions, 1287 flow. Second operand 9 states and 115 transitions. [2024-06-14 11:46:49,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 142 transitions, 1777 flow [2024-06-14 11:46:49,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 142 transitions, 1698 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-14 11:46:49,497 INFO L231 Difference]: Finished difference. Result has 135 places, 132 transitions, 1399 flow [2024-06-14 11:46:49,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1208, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1399, PETRI_PLACES=135, PETRI_TRANSITIONS=132} [2024-06-14 11:46:49,498 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-14 11:46:49,498 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 132 transitions, 1399 flow [2024-06-14 11:46:49,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:49,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:49,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:49,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 11:46:49,499 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)] === [2024-06-14 11:46:49,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:49,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1962452986, now seen corresponding path program 2 times [2024-06-14 11:46:49,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:49,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500069886] [2024-06-14 11:46:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:49,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:51,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:51,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500069886] [2024-06-14 11:46:51,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500069886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:51,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:51,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:51,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875183269] [2024-06-14 11:46:51,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:51,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:51,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:51,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:51,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:51,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:51,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 132 transitions, 1399 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:51,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:51,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:51,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:51,548 INFO L124 PetriNetUnfolderBase]: 332/608 cut-off events. [2024-06-14 11:46:51,548 INFO L125 PetriNetUnfolderBase]: For 26990/26993 co-relation queries the response was YES. [2024-06-14 11:46:51,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4801 conditions, 608 events. 332/608 cut-off events. For 26990/26993 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2701 event pairs, 40 based on Foata normal form. 3/607 useless extension candidates. Maximal degree in co-relation 4736. Up to 540 conditions per place. [2024-06-14 11:46:51,569 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 121 selfloop transitions, 19 changer transitions 0/143 dead transitions. [2024-06-14 11:46:51,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 143 transitions, 1716 flow [2024-06-14 11:46:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:51,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:51,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 11:46:51,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-14 11:46:51,571 INFO L175 Difference]: Start difference. First operand has 135 places, 132 transitions, 1399 flow. Second operand 9 states and 107 transitions. [2024-06-14 11:46:51,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 143 transitions, 1716 flow [2024-06-14 11:46:51,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 143 transitions, 1626 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:51,603 INFO L231 Difference]: Finished difference. Result has 139 places, 133 transitions, 1363 flow [2024-06-14 11:46:51,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1309, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=139, PETRI_TRANSITIONS=133} [2024-06-14 11:46:51,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-14 11:46:51,604 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 133 transitions, 1363 flow [2024-06-14 11:46:51,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:51,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:51,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:51,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 11:46:51,605 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)] === [2024-06-14 11:46:51,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:51,605 INFO L85 PathProgramCache]: Analyzing trace with hash 496011534, now seen corresponding path program 3 times [2024-06-14 11:46:51,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:51,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737666292] [2024-06-14 11:46:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:51,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:53,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:53,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737666292] [2024-06-14 11:46:53,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737666292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:53,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:53,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:53,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473070522] [2024-06-14 11:46:53,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:53,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:53,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:53,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:53,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:53,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:53,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 133 transitions, 1363 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:53,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:53,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:53,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:53,396 INFO L124 PetriNetUnfolderBase]: 335/613 cut-off events. [2024-06-14 11:46:53,396 INFO L125 PetriNetUnfolderBase]: For 28033/28036 co-relation queries the response was YES. [2024-06-14 11:46:53,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4854 conditions, 613 events. 335/613 cut-off events. For 28033/28036 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2710 event pairs, 40 based on Foata normal form. 3/612 useless extension candidates. Maximal degree in co-relation 4787. Up to 524 conditions per place. [2024-06-14 11:46:53,401 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 113 selfloop transitions, 29 changer transitions 0/145 dead transitions. [2024-06-14 11:46:53,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 145 transitions, 1711 flow [2024-06-14 11:46:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 11:46:53,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 11:46:53,422 INFO L175 Difference]: Start difference. First operand has 139 places, 133 transitions, 1363 flow. Second operand 9 states and 110 transitions. [2024-06-14 11:46:53,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 145 transitions, 1711 flow [2024-06-14 11:46:53,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 145 transitions, 1652 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:53,455 INFO L231 Difference]: Finished difference. Result has 141 places, 135 transitions, 1407 flow [2024-06-14 11:46:53,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1407, PETRI_PLACES=141, PETRI_TRANSITIONS=135} [2024-06-14 11:46:53,457 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 110 predicate places. [2024-06-14 11:46:53,457 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 135 transitions, 1407 flow [2024-06-14 11:46:53,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:53,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:53,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:53,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 11:46:53,457 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)] === [2024-06-14 11:46:53,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1962453265, now seen corresponding path program 6 times [2024-06-14 11:46:53,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:53,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428121529] [2024-06-14 11:46:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:53,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:54,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:54,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428121529] [2024-06-14 11:46:54,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428121529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:54,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:54,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:54,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897869844] [2024-06-14 11:46:54,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:54,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:54,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:54,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:54,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:54,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:54,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 135 transitions, 1407 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:54,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:54,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:54,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:54,861 INFO L124 PetriNetUnfolderBase]: 333/610 cut-off events. [2024-06-14 11:46:54,861 INFO L125 PetriNetUnfolderBase]: For 28669/28672 co-relation queries the response was YES. [2024-06-14 11:46:54,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 610 events. 333/610 cut-off events. For 28669/28672 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2706 event pairs, 43 based on Foata normal form. 1/606 useless extension candidates. Maximal degree in co-relation 4787. Up to 480 conditions per place. [2024-06-14 11:46:54,866 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 111 selfloop transitions, 37 changer transitions 0/151 dead transitions. [2024-06-14 11:46:54,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 151 transitions, 1914 flow [2024-06-14 11:46:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:46:54,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:46:54,877 INFO L175 Difference]: Start difference. First operand has 141 places, 135 transitions, 1407 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:46:54,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 151 transitions, 1914 flow [2024-06-14 11:46:54,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 151 transitions, 1827 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:54,911 INFO L231 Difference]: Finished difference. Result has 144 places, 141 transitions, 1527 flow [2024-06-14 11:46:54,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1527, PETRI_PLACES=144, PETRI_TRANSITIONS=141} [2024-06-14 11:46:54,912 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-14 11:46:54,912 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 141 transitions, 1527 flow [2024-06-14 11:46:54,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:54,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:54,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:54,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 11:46:54,913 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)] === [2024-06-14 11:46:54,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662732, now seen corresponding path program 6 times [2024-06-14 11:46:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:54,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173936634] [2024-06-14 11:46:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:54,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:56,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:56,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173936634] [2024-06-14 11:46:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173936634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:56,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:56,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:56,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149632688] [2024-06-14 11:46:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:56,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:56,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:56,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:56,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 141 transitions, 1527 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:56,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:56,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:56,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:56,567 INFO L124 PetriNetUnfolderBase]: 331/607 cut-off events. [2024-06-14 11:46:56,567 INFO L125 PetriNetUnfolderBase]: For 29407/29410 co-relation queries the response was YES. [2024-06-14 11:46:56,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4868 conditions, 607 events. 331/607 cut-off events. For 29407/29410 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2680 event pairs, 44 based on Foata normal form. 1/603 useless extension candidates. Maximal degree in co-relation 4798. Up to 497 conditions per place. [2024-06-14 11:46:56,593 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 29 changer transitions 0/150 dead transitions. [2024-06-14 11:46:56,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 150 transitions, 1843 flow [2024-06-14 11:46:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:56,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-14 11:46:56,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 11:46:56,596 INFO L175 Difference]: Start difference. First operand has 144 places, 141 transitions, 1527 flow. Second operand 9 states and 112 transitions. [2024-06-14 11:46:56,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 150 transitions, 1843 flow [2024-06-14 11:46:56,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 1728 flow, removed 38 selfloop flow, removed 5 redundant places. [2024-06-14 11:46:56,640 INFO L231 Difference]: Finished difference. Result has 148 places, 141 transitions, 1475 flow [2024-06-14 11:46:56,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=148, PETRI_TRANSITIONS=141} [2024-06-14 11:46:56,641 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-14 11:46:56,641 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 141 transitions, 1475 flow [2024-06-14 11:46:56,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:56,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:56,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:56,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 11:46:56,647 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)] === [2024-06-14 11:46:56,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:56,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1962662515, now seen corresponding path program 7 times [2024-06-14 11:46:56,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:56,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908360012] [2024-06-14 11:46:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:56,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:57,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:57,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908360012] [2024-06-14 11:46:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908360012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:57,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164509803] [2024-06-14 11:46:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:57,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:57,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:57,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:57,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:57,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 141 transitions, 1475 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:57,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:57,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:57,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:58,026 INFO L124 PetriNetUnfolderBase]: 327/601 cut-off events. [2024-06-14 11:46:58,026 INFO L125 PetriNetUnfolderBase]: For 29326/29329 co-relation queries the response was YES. [2024-06-14 11:46:58,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4731 conditions, 601 events. 327/601 cut-off events. For 29326/29329 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2652 event pairs, 42 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 4659. Up to 488 conditions per place. [2024-06-14 11:46:58,030 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 30 changer transitions 0/151 dead transitions. [2024-06-14 11:46:58,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 151 transitions, 1806 flow [2024-06-14 11:46:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:58,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:58,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:46:58,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 11:46:58,032 INFO L175 Difference]: Start difference. First operand has 148 places, 141 transitions, 1475 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:46:58,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 151 transitions, 1806 flow [2024-06-14 11:46:58,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 151 transitions, 1677 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-14 11:46:58,068 INFO L231 Difference]: Finished difference. Result has 149 places, 142 transitions, 1427 flow [2024-06-14 11:46:58,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1427, PETRI_PLACES=149, PETRI_TRANSITIONS=142} [2024-06-14 11:46:58,068 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 118 predicate places. [2024-06-14 11:46:58,069 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 142 transitions, 1427 flow [2024-06-14 11:46:58,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:58,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:58,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:58,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 11:46:58,069 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)] === [2024-06-14 11:46:58,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:58,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1705952755, now seen corresponding path program 8 times [2024-06-14 11:46:58,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:58,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19164418] [2024-06-14 11:46:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:58,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:46:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:46:58,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:46:58,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19164418] [2024-06-14 11:46:58,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19164418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:46:58,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:46:58,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:46:58,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952944696] [2024-06-14 11:46:58,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:46:58,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:46:58,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:46:58,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:46:58,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:46:59,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:46:59,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 142 transitions, 1427 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:59,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:46:59,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:46:59,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:46:59,297 INFO L124 PetriNetUnfolderBase]: 343/627 cut-off events. [2024-06-14 11:46:59,297 INFO L125 PetriNetUnfolderBase]: For 32746/32749 co-relation queries the response was YES. [2024-06-14 11:46:59,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 627 events. 343/627 cut-off events. For 32746/32749 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2816 event pairs, 43 based on Foata normal form. 2/624 useless extension candidates. Maximal degree in co-relation 4923. Up to 351 conditions per place. [2024-06-14 11:46:59,302 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 86 selfloop transitions, 75 changer transitions 0/164 dead transitions. [2024-06-14 11:46:59,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 164 transitions, 2207 flow [2024-06-14 11:46:59,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:46:59,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:46:59,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 11:46:59,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-14 11:46:59,304 INFO L175 Difference]: Start difference. First operand has 149 places, 142 transitions, 1427 flow. Second operand 9 states and 124 transitions. [2024-06-14 11:46:59,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 164 transitions, 2207 flow [2024-06-14 11:46:59,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 164 transitions, 2147 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-14 11:46:59,343 INFO L231 Difference]: Finished difference. Result has 151 places, 148 transitions, 1629 flow [2024-06-14 11:46:59,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1367, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1629, PETRI_PLACES=151, PETRI_TRANSITIONS=148} [2024-06-14 11:46:59,344 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-14 11:46:59,344 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 148 transitions, 1629 flow [2024-06-14 11:46:59,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:46:59,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:46:59,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:46:59,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 11:46:59,345 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)] === [2024-06-14 11:46:59,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:46:59,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960412, now seen corresponding path program 7 times [2024-06-14 11:46:59,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:46:59,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302922761] [2024-06-14 11:46:59,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:46:59,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:46:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:00,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:00,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302922761] [2024-06-14 11:47:00,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302922761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:00,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:00,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:00,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635612989] [2024-06-14 11:47:00,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:00,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:00,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:00,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:00,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:00,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:00,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 148 transitions, 1629 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:00,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:00,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:00,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:00,990 INFO L124 PetriNetUnfolderBase]: 341/624 cut-off events. [2024-06-14 11:47:00,990 INFO L125 PetriNetUnfolderBase]: For 32941/32944 co-relation queries the response was YES. [2024-06-14 11:47:00,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5089 conditions, 624 events. 341/624 cut-off events. For 32941/32944 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2794 event pairs, 44 based on Foata normal form. 1/620 useless extension candidates. Maximal degree in co-relation 5015. Up to 462 conditions per place. [2024-06-14 11:47:00,995 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 106 selfloop transitions, 50 changer transitions 0/159 dead transitions. [2024-06-14 11:47:00,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 159 transitions, 2025 flow [2024-06-14 11:47:00,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:00,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:00,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:47:00,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 11:47:00,999 INFO L175 Difference]: Start difference. First operand has 151 places, 148 transitions, 1629 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:47:00,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 159 transitions, 2025 flow [2024-06-14 11:47:01,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 159 transitions, 1832 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:01,038 INFO L231 Difference]: Finished difference. Result has 154 places, 150 transitions, 1607 flow [2024-06-14 11:47:01,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1607, PETRI_PLACES=154, PETRI_TRANSITIONS=150} [2024-06-14 11:47:01,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-06-14 11:47:01,041 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 150 transitions, 1607 flow [2024-06-14 11:47:01,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:01,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:01,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:01,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 11:47:01,042 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)] === [2024-06-14 11:47:01,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:01,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1705960195, now seen corresponding path program 9 times [2024-06-14 11:47:01,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:01,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773793284] [2024-06-14 11:47:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:01,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:01,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:01,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773793284] [2024-06-14 11:47:01,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773793284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:01,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:01,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:01,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974680015] [2024-06-14 11:47:01,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:01,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:01,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:01,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:01,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:01,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:01,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 150 transitions, 1607 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:01,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:01,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:01,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:02,225 INFO L124 PetriNetUnfolderBase]: 337/618 cut-off events. [2024-06-14 11:47:02,225 INFO L125 PetriNetUnfolderBase]: For 32555/32558 co-relation queries the response was YES. [2024-06-14 11:47:02,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 618 events. 337/618 cut-off events. For 32555/32558 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2767 event pairs, 42 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 4740. Up to 345 conditions per place. [2024-06-14 11:47:02,229 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 78 changer transitions 0/166 dead transitions. [2024-06-14 11:47:02,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 166 transitions, 2295 flow [2024-06-14 11:47:02,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:02,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 11:47:02,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4270833333333333 [2024-06-14 11:47:02,230 INFO L175 Difference]: Start difference. First operand has 154 places, 150 transitions, 1607 flow. Second operand 9 states and 123 transitions. [2024-06-14 11:47:02,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 166 transitions, 2295 flow [2024-06-14 11:47:02,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 166 transitions, 2124 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:02,266 INFO L231 Difference]: Finished difference. Result has 157 places, 152 transitions, 1647 flow [2024-06-14 11:47:02,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1647, PETRI_PLACES=157, PETRI_TRANSITIONS=152} [2024-06-14 11:47:02,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-14 11:47:02,267 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 152 transitions, 1647 flow [2024-06-14 11:47:02,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:02,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:02,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:02,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 11:47:02,267 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)] === [2024-06-14 11:47:02,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1696755985, now seen corresponding path program 10 times [2024-06-14 11:47:02,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:02,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337719125] [2024-06-14 11:47:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:02,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:03,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:03,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:03,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337719125] [2024-06-14 11:47:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337719125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:03,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886368640] [2024-06-14 11:47:03,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:03,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:03,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:03,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:03,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 152 transitions, 1647 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:03,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:03,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:03,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:03,605 INFO L124 PetriNetUnfolderBase]: 334/613 cut-off events. [2024-06-14 11:47:03,605 INFO L125 PetriNetUnfolderBase]: For 31851/31851 co-relation queries the response was YES. [2024-06-14 11:47:03,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 613 events. 334/613 cut-off events. For 31851/31851 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2733 event pairs, 38 based on Foata normal form. 2/613 useless extension candidates. Maximal degree in co-relation 4677. Up to 547 conditions per place. [2024-06-14 11:47:03,609 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 144 selfloop transitions, 16 changer transitions 0/163 dead transitions. [2024-06-14 11:47:03,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 163 transitions, 2097 flow [2024-06-14 11:47:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:03,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-14 11:47:03,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3784722222222222 [2024-06-14 11:47:03,610 INFO L175 Difference]: Start difference. First operand has 157 places, 152 transitions, 1647 flow. Second operand 9 states and 109 transitions. [2024-06-14 11:47:03,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 163 transitions, 2097 flow [2024-06-14 11:47:03,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 163 transitions, 1936 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:03,681 INFO L231 Difference]: Finished difference. Result has 160 places, 152 transitions, 1524 flow [2024-06-14 11:47:03,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1524, PETRI_PLACES=160, PETRI_TRANSITIONS=152} [2024-06-14 11:47:03,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-14 11:47:03,682 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 152 transitions, 1524 flow [2024-06-14 11:47:03,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:03,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:03,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:03,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 11:47:03,682 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)] === [2024-06-14 11:47:03,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:03,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1696755706, now seen corresponding path program 4 times [2024-06-14 11:47:03,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:03,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686831604] [2024-06-14 11:47:03,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:03,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:04,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:04,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:04,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686831604] [2024-06-14 11:47:04,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686831604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:04,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:04,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:04,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226073089] [2024-06-14 11:47:04,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:04,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:04,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:04,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:05,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:05,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 152 transitions, 1524 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:05,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:05,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:05,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:05,284 INFO L124 PetriNetUnfolderBase]: 337/618 cut-off events. [2024-06-14 11:47:05,284 INFO L125 PetriNetUnfolderBase]: For 31769/31769 co-relation queries the response was YES. [2024-06-14 11:47:05,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4656 conditions, 618 events. 337/618 cut-off events. For 31769/31769 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2760 event pairs, 38 based on Foata normal form. 1/617 useless extension candidates. Maximal degree in co-relation 4579. Up to 567 conditions per place. [2024-06-14 11:47:05,288 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 146 selfloop transitions, 14 changer transitions 0/163 dead transitions. [2024-06-14 11:47:05,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 163 transitions, 1910 flow [2024-06-14 11:47:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:05,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-14 11:47:05,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-14 11:47:05,289 INFO L175 Difference]: Start difference. First operand has 160 places, 152 transitions, 1524 flow. Second operand 9 states and 105 transitions. [2024-06-14 11:47:05,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 163 transitions, 1910 flow [2024-06-14 11:47:05,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 163 transitions, 1850 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:05,333 INFO L231 Difference]: Finished difference. Result has 160 places, 154 transitions, 1545 flow [2024-06-14 11:47:05,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1545, PETRI_PLACES=160, PETRI_TRANSITIONS=154} [2024-06-14 11:47:05,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-14 11:47:05,333 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 154 transitions, 1545 flow [2024-06-14 11:47:05,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:05,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:05,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:05,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 11:47:05,334 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)] === [2024-06-14 11:47:05,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:05,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1696429276, now seen corresponding path program 5 times [2024-06-14 11:47:05,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:05,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145139979] [2024-06-14 11:47:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:05,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:06,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145139979] [2024-06-14 11:47:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145139979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:06,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390027737] [2024-06-14 11:47:06,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:06,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:06,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:06,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:06,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:06,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:06,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 154 transitions, 1545 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:06,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:06,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:06,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:06,883 INFO L124 PetriNetUnfolderBase]: 334/613 cut-off events. [2024-06-14 11:47:06,883 INFO L125 PetriNetUnfolderBase]: For 31855/31855 co-relation queries the response was YES. [2024-06-14 11:47:06,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4579 conditions, 613 events. 334/613 cut-off events. For 31855/31855 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2737 event pairs, 38 based on Foata normal form. 1/612 useless extension candidates. Maximal degree in co-relation 4501. Up to 556 conditions per place. [2024-06-14 11:47:06,888 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 143 selfloop transitions, 18 changer transitions 0/164 dead transitions. [2024-06-14 11:47:06,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 164 transitions, 1891 flow [2024-06-14 11:47:06,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:06,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:06,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-14 11:47:06,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-14 11:47:06,889 INFO L175 Difference]: Start difference. First operand has 160 places, 154 transitions, 1545 flow. Second operand 10 states and 116 transitions. [2024-06-14 11:47:06,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 164 transitions, 1891 flow [2024-06-14 11:47:06,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 164 transitions, 1812 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:06,947 INFO L231 Difference]: Finished difference. Result has 163 places, 154 transitions, 1507 flow [2024-06-14 11:47:06,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1507, PETRI_PLACES=163, PETRI_TRANSITIONS=154} [2024-06-14 11:47:06,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-14 11:47:06,947 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 154 transitions, 1507 flow [2024-06-14 11:47:06,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:06,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:06,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:06,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 11:47:06,948 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)] === [2024-06-14 11:47:06,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:06,949 INFO L85 PathProgramCache]: Analyzing trace with hash -574682184, now seen corresponding path program 1 times [2024-06-14 11:47:06,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:06,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791613398] [2024-06-14 11:47:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:07,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:07,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791613398] [2024-06-14 11:47:07,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791613398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:07,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:07,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:07,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091584587] [2024-06-14 11:47:07,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:07,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:07,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:07,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:07,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:07,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:07,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 154 transitions, 1507 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:07,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:07,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:07,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:08,275 INFO L124 PetriNetUnfolderBase]: 338/621 cut-off events. [2024-06-14 11:47:08,275 INFO L125 PetriNetUnfolderBase]: For 34026/34026 co-relation queries the response was YES. [2024-06-14 11:47:08,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4610 conditions, 621 events. 338/621 cut-off events. For 34026/34026 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2787 event pairs, 15 based on Foata normal form. 2/621 useless extension candidates. Maximal degree in co-relation 4531. Up to 517 conditions per place. [2024-06-14 11:47:08,280 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 153 selfloop transitions, 18 changer transitions 0/174 dead transitions. [2024-06-14 11:47:08,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 1919 flow [2024-06-14 11:47:08,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:08,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:08,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-14 11:47:08,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-14 11:47:08,281 INFO L175 Difference]: Start difference. First operand has 163 places, 154 transitions, 1507 flow. Second operand 9 states and 113 transitions. [2024-06-14 11:47:08,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 1919 flow [2024-06-14 11:47:08,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 174 transitions, 1873 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:08,328 INFO L231 Difference]: Finished difference. Result has 163 places, 155 transitions, 1519 flow [2024-06-14 11:47:08,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1461, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1519, PETRI_PLACES=163, PETRI_TRANSITIONS=155} [2024-06-14 11:47:08,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-14 11:47:08,329 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 155 transitions, 1519 flow [2024-06-14 11:47:08,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:08,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:08,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:08,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 11:47:08,329 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)] === [2024-06-14 11:47:08,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:08,330 INFO L85 PathProgramCache]: Analyzing trace with hash 726413096, now seen corresponding path program 2 times [2024-06-14 11:47:08,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:08,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138819689] [2024-06-14 11:47:08,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:08,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:09,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:09,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:09,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138819689] [2024-06-14 11:47:09,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138819689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:09,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:09,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:09,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43125604] [2024-06-14 11:47:09,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:09,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:09,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:09,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:09,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:09,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:09,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 155 transitions, 1519 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:09,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:09,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:09,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:09,595 INFO L124 PetriNetUnfolderBase]: 342/629 cut-off events. [2024-06-14 11:47:09,595 INFO L125 PetriNetUnfolderBase]: For 35500/35500 co-relation queries the response was YES. [2024-06-14 11:47:09,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 629 events. 342/629 cut-off events. For 35500/35500 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 2859 event pairs, 32 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 4623. Up to 542 conditions per place. [2024-06-14 11:47:09,600 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 19 changer transitions 0/174 dead transitions. [2024-06-14 11:47:09,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 174 transitions, 1931 flow [2024-06-14 11:47:09,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:09,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:09,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 11:47:09,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-14 11:47:09,602 INFO L175 Difference]: Start difference. First operand has 163 places, 155 transitions, 1519 flow. Second operand 9 states and 114 transitions. [2024-06-14 11:47:09,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 174 transitions, 1931 flow [2024-06-14 11:47:09,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 174 transitions, 1883 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:09,653 INFO L231 Difference]: Finished difference. Result has 165 places, 156 transitions, 1533 flow [2024-06-14 11:47:09,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1471, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1533, PETRI_PLACES=165, PETRI_TRANSITIONS=156} [2024-06-14 11:47:09,654 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-14 11:47:09,654 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 156 transitions, 1533 flow [2024-06-14 11:47:09,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:09,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:09,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:09,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 11:47:09,655 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)] === [2024-06-14 11:47:09,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:09,655 INFO L85 PathProgramCache]: Analyzing trace with hash -853549450, now seen corresponding path program 1 times [2024-06-14 11:47:09,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:09,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824179442] [2024-06-14 11:47:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:10,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824179442] [2024-06-14 11:47:10,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824179442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:10,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:10,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:10,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849968741] [2024-06-14 11:47:10,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:10,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:10,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:10,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:10,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 156 transitions, 1533 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:10,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:10,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:10,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:11,174 INFO L124 PetriNetUnfolderBase]: 345/634 cut-off events. [2024-06-14 11:47:11,174 INFO L125 PetriNetUnfolderBase]: For 36509/36509 co-relation queries the response was YES. [2024-06-14 11:47:11,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4776 conditions, 634 events. 345/634 cut-off events. For 36509/36509 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2883 event pairs, 31 based on Foata normal form. 1/633 useless extension candidates. Maximal degree in co-relation 4695. Up to 547 conditions per place. [2024-06-14 11:47:11,179 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 22 changer transitions 0/176 dead transitions. [2024-06-14 11:47:11,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 176 transitions, 1985 flow [2024-06-14 11:47:11,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:11,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:11,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:47:11,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 11:47:11,180 INFO L175 Difference]: Start difference. First operand has 165 places, 156 transitions, 1533 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:47:11,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 176 transitions, 1985 flow [2024-06-14 11:47:11,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 176 transitions, 1933 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:11,233 INFO L231 Difference]: Finished difference. Result has 168 places, 158 transitions, 1588 flow [2024-06-14 11:47:11,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1588, PETRI_PLACES=168, PETRI_TRANSITIONS=158} [2024-06-14 11:47:11,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 137 predicate places. [2024-06-14 11:47:11,233 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 158 transitions, 1588 flow [2024-06-14 11:47:11,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:11,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:11,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:11,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 11:47:11,234 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)] === [2024-06-14 11:47:11,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1691653364, now seen corresponding path program 3 times [2024-06-14 11:47:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:11,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467678910] [2024-06-14 11:47:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:11,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:11,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467678910] [2024-06-14 11:47:11,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467678910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:11,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:11,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:11,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265859209] [2024-06-14 11:47:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:11,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:11,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:12,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:12,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 158 transitions, 1588 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:12,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:12,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:12,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:12,337 INFO L124 PetriNetUnfolderBase]: 349/642 cut-off events. [2024-06-14 11:47:12,338 INFO L125 PetriNetUnfolderBase]: For 39276/39276 co-relation queries the response was YES. [2024-06-14 11:47:12,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4860 conditions, 642 events. 349/642 cut-off events. For 39276/39276 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2940 event pairs, 31 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4778. Up to 557 conditions per place. [2024-06-14 11:47:12,343 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 152 selfloop transitions, 22 changer transitions 0/177 dead transitions. [2024-06-14 11:47:12,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 177 transitions, 2030 flow [2024-06-14 11:47:12,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:12,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:47:12,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 11:47:12,361 INFO L175 Difference]: Start difference. First operand has 168 places, 158 transitions, 1588 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:47:12,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 177 transitions, 2030 flow [2024-06-14 11:47:12,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 177 transitions, 1939 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:12,418 INFO L231 Difference]: Finished difference. Result has 170 places, 162 transitions, 1608 flow [2024-06-14 11:47:12,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1608, PETRI_PLACES=170, PETRI_TRANSITIONS=162} [2024-06-14 11:47:12,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-14 11:47:12,419 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 162 transitions, 1608 flow [2024-06-14 11:47:12,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:12,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:12,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:12,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 11:47:12,419 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)] === [2024-06-14 11:47:12,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:12,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1691831304, now seen corresponding path program 2 times [2024-06-14 11:47:12,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:12,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429745738] [2024-06-14 11:47:12,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:12,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:13,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:13,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429745738] [2024-06-14 11:47:13,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429745738] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:13,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:13,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:13,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545569228] [2024-06-14 11:47:13,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:13,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:13,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:13,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:13,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:13,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:13,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 162 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:13,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:13,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:13,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:13,958 INFO L124 PetriNetUnfolderBase]: 367/675 cut-off events. [2024-06-14 11:47:13,958 INFO L125 PetriNetUnfolderBase]: For 43973/43973 co-relation queries the response was YES. [2024-06-14 11:47:13,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5352 conditions, 675 events. 367/675 cut-off events. For 43973/43973 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3112 event pairs, 29 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 5268. Up to 548 conditions per place. [2024-06-14 11:47:13,966 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 36 changer transitions 0/186 dead transitions. [2024-06-14 11:47:13,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 186 transitions, 2404 flow [2024-06-14 11:47:13,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 11:47:13,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-14 11:47:13,968 INFO L175 Difference]: Start difference. First operand has 170 places, 162 transitions, 1608 flow. Second operand 10 states and 129 transitions. [2024-06-14 11:47:13,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 186 transitions, 2404 flow [2024-06-14 11:47:14,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 186 transitions, 2345 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:14,041 INFO L231 Difference]: Finished difference. Result has 174 places, 169 transitions, 1808 flow [2024-06-14 11:47:14,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1808, PETRI_PLACES=174, PETRI_TRANSITIONS=169} [2024-06-14 11:47:14,043 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-14 11:47:14,043 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 169 transitions, 1808 flow [2024-06-14 11:47:14,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:14,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:14,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:14,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 11:47:14,043 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)] === [2024-06-14 11:47:14,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1691837814, now seen corresponding path program 3 times [2024-06-14 11:47:14,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:14,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227357030] [2024-06-14 11:47:14,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:14,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:15,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:15,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:15,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227357030] [2024-06-14 11:47:15,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227357030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:15,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:15,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:15,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112670774] [2024-06-14 11:47:15,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:15,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:15,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:15,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:15,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:15,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:15,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 169 transitions, 1808 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:15,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:15,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:15,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:15,702 INFO L124 PetriNetUnfolderBase]: 365/672 cut-off events. [2024-06-14 11:47:15,702 INFO L125 PetriNetUnfolderBase]: For 44694/44694 co-relation queries the response was YES. [2024-06-14 11:47:15,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5340 conditions, 672 events. 365/672 cut-off events. For 44694/44694 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3106 event pairs, 32 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 5255. Up to 566 conditions per place. [2024-06-14 11:47:15,710 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 31 changer transitions 0/185 dead transitions. [2024-06-14 11:47:15,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 185 transitions, 2256 flow [2024-06-14 11:47:15,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:15,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:15,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:47:15,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 11:47:15,717 INFO L175 Difference]: Start difference. First operand has 174 places, 169 transitions, 1808 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:47:15,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 185 transitions, 2256 flow [2024-06-14 11:47:15,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 185 transitions, 2151 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:15,787 INFO L231 Difference]: Finished difference. Result has 179 places, 170 transitions, 1814 flow [2024-06-14 11:47:15,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1814, PETRI_PLACES=179, PETRI_TRANSITIONS=170} [2024-06-14 11:47:15,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-14 11:47:15,787 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 170 transitions, 1814 flow [2024-06-14 11:47:15,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:15,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:15,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:15,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 11:47:15,788 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)] === [2024-06-14 11:47:15,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:15,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1691838062, now seen corresponding path program 1 times [2024-06-14 11:47:15,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:15,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095702147] [2024-06-14 11:47:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:15,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:15,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095702147] [2024-06-14 11:47:17,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095702147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:17,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:17,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:17,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067774856] [2024-06-14 11:47:17,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:17,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:17,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 170 transitions, 1814 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:17,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:17,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:17,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:17,769 INFO L124 PetriNetUnfolderBase]: 364/671 cut-off events. [2024-06-14 11:47:17,770 INFO L125 PetriNetUnfolderBase]: For 45545/45545 co-relation queries the response was YES. [2024-06-14 11:47:17,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5249 conditions, 671 events. 364/671 cut-off events. For 45545/45545 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3096 event pairs, 30 based on Foata normal form. 3/672 useless extension candidates. Maximal degree in co-relation 5162. Up to 541 conditions per place. [2024-06-14 11:47:17,775 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 36 changer transitions 0/188 dead transitions. [2024-06-14 11:47:17,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 188 transitions, 2284 flow [2024-06-14 11:47:17,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:17,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:17,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 11:47:17,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 11:47:17,776 INFO L175 Difference]: Start difference. First operand has 179 places, 170 transitions, 1814 flow. Second operand 10 states and 126 transitions. [2024-06-14 11:47:17,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 188 transitions, 2284 flow [2024-06-14 11:47:17,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 188 transitions, 2157 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:17,844 INFO L231 Difference]: Finished difference. Result has 181 places, 172 transitions, 1826 flow [2024-06-14 11:47:17,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=181, PETRI_TRANSITIONS=172} [2024-06-14 11:47:17,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-14 11:47:17,844 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 172 transitions, 1826 flow [2024-06-14 11:47:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:17,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:17,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:17,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 11:47:17,845 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)] === [2024-06-14 11:47:17,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1857292498, now seen corresponding path program 4 times [2024-06-14 11:47:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:17,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025552847] [2024-06-14 11:47:17,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:17,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:18,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:18,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025552847] [2024-06-14 11:47:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025552847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:18,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137236408] [2024-06-14 11:47:18,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:18,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:18,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:18,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:18,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:18,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:18,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 172 transitions, 1826 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:18,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:18,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:18,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:19,001 INFO L124 PetriNetUnfolderBase]: 368/679 cut-off events. [2024-06-14 11:47:19,001 INFO L125 PetriNetUnfolderBase]: For 45345/45345 co-relation queries the response was YES. [2024-06-14 11:47:19,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5307 conditions, 679 events. 368/679 cut-off events. For 45345/45345 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3156 event pairs, 32 based on Foata normal form. 2/679 useless extension candidates. Maximal degree in co-relation 5219. Up to 581 conditions per place. [2024-06-14 11:47:19,009 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 158 selfloop transitions, 25 changer transitions 0/186 dead transitions. [2024-06-14 11:47:19,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 186 transitions, 2256 flow [2024-06-14 11:47:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:19,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-14 11:47:19,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 11:47:19,011 INFO L175 Difference]: Start difference. First operand has 181 places, 172 transitions, 1826 flow. Second operand 9 states and 111 transitions. [2024-06-14 11:47:19,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 186 transitions, 2256 flow [2024-06-14 11:47:19,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 186 transitions, 2127 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:19,101 INFO L231 Difference]: Finished difference. Result has 182 places, 174 transitions, 1787 flow [2024-06-14 11:47:19,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1787, PETRI_PLACES=182, PETRI_TRANSITIONS=174} [2024-06-14 11:47:19,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 151 predicate places. [2024-06-14 11:47:19,102 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 174 transitions, 1787 flow [2024-06-14 11:47:19,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:19,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:19,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:19,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 11:47:19,103 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)] === [2024-06-14 11:47:19,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:19,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1857470438, now seen corresponding path program 4 times [2024-06-14 11:47:19,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:19,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090619122] [2024-06-14 11:47:19,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:19,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:19,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:20,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:20,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:20,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090619122] [2024-06-14 11:47:20,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090619122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:20,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:20,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:20,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034505778] [2024-06-14 11:47:20,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:20,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:20,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:20,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:20,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:20,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:20,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 174 transitions, 1787 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:20,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:20,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:20,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:20,707 INFO L124 PetriNetUnfolderBase]: 386/716 cut-off events. [2024-06-14 11:47:20,711 INFO L125 PetriNetUnfolderBase]: For 51852/51852 co-relation queries the response was YES. [2024-06-14 11:47:20,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5800 conditions, 716 events. 386/716 cut-off events. For 51852/51852 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3401 event pairs, 31 based on Foata normal form. 1/715 useless extension candidates. Maximal degree in co-relation 5711. Up to 577 conditions per place. [2024-06-14 11:47:20,717 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 39 changer transitions 0/196 dead transitions. [2024-06-14 11:47:20,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 196 transitions, 2640 flow [2024-06-14 11:47:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 11:47:20,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-14 11:47:20,718 INFO L175 Difference]: Start difference. First operand has 182 places, 174 transitions, 1787 flow. Second operand 10 states and 129 transitions. [2024-06-14 11:47:20,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 196 transitions, 2640 flow [2024-06-14 11:47:20,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 196 transitions, 2549 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:20,805 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 1985 flow [2024-06-14 11:47:20,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1985, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2024-06-14 11:47:20,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-14 11:47:20,806 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 1985 flow [2024-06-14 11:47:20,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:20,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:20,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:20,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 11:47:20,807 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)] === [2024-06-14 11:47:20,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:20,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1863733058, now seen corresponding path program 5 times [2024-06-14 11:47:20,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:20,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319575330] [2024-06-14 11:47:20,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:20,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:22,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:22,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319575330] [2024-06-14 11:47:22,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319575330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:22,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:22,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:22,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664974832] [2024-06-14 11:47:22,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:22,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:22,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:22,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:22,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:22,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:22,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 1985 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:22,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:22,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:22,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:22,596 INFO L124 PetriNetUnfolderBase]: 412/766 cut-off events. [2024-06-14 11:47:22,597 INFO L125 PetriNetUnfolderBase]: For 63920/63920 co-relation queries the response was YES. [2024-06-14 11:47:22,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 766 events. 412/766 cut-off events. For 63920/63920 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3736 event pairs, 33 based on Foata normal form. 2/766 useless extension candidates. Maximal degree in co-relation 6566. Up to 519 conditions per place. [2024-06-14 11:47:22,604 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 142 selfloop transitions, 61 changer transitions 0/206 dead transitions. [2024-06-14 11:47:22,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 206 transitions, 3030 flow [2024-06-14 11:47:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:22,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 11:47:22,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-14 11:47:22,605 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 1985 flow. Second operand 10 states and 134 transitions. [2024-06-14 11:47:22,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 206 transitions, 3030 flow [2024-06-14 11:47:22,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 206 transitions, 2911 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:22,701 INFO L231 Difference]: Finished difference. Result has 189 places, 188 transitions, 2209 flow [2024-06-14 11:47:22,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2209, PETRI_PLACES=189, PETRI_TRANSITIONS=188} [2024-06-14 11:47:22,701 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-14 11:47:22,701 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 188 transitions, 2209 flow [2024-06-14 11:47:22,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:22,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:22,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:22,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 11:47:22,702 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)] === [2024-06-14 11:47:22,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1857476948, now seen corresponding path program 6 times [2024-06-14 11:47:22,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:22,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208750561] [2024-06-14 11:47:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:22,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:23,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208750561] [2024-06-14 11:47:23,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208750561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:23,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:23,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:23,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340027918] [2024-06-14 11:47:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:23,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:23,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:24,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:24,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 188 transitions, 2209 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:24,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:24,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:24,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:24,444 INFO L124 PetriNetUnfolderBase]: 408/760 cut-off events. [2024-06-14 11:47:24,444 INFO L125 PetriNetUnfolderBase]: For 62848/62848 co-relation queries the response was YES. [2024-06-14 11:47:24,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6585 conditions, 760 events. 408/760 cut-off events. For 62848/62848 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3705 event pairs, 33 based on Foata normal form. 2/760 useless extension candidates. Maximal degree in co-relation 6494. Up to 616 conditions per place. [2024-06-14 11:47:24,452 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 38 changer transitions 0/202 dead transitions. [2024-06-14 11:47:24,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 202 transitions, 2764 flow [2024-06-14 11:47:24,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:24,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:47:24,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 11:47:24,454 INFO L175 Difference]: Start difference. First operand has 189 places, 188 transitions, 2209 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:47:24,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 202 transitions, 2764 flow [2024-06-14 11:47:24,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 202 transitions, 2563 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-14 11:47:24,568 INFO L231 Difference]: Finished difference. Result has 194 places, 188 transitions, 2091 flow [2024-06-14 11:47:24,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2008, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2091, PETRI_PLACES=194, PETRI_TRANSITIONS=188} [2024-06-14 11:47:24,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-14 11:47:24,569 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 188 transitions, 2091 flow [2024-06-14 11:47:24,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:24,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:24,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:24,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 11:47:24,569 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)] === [2024-06-14 11:47:24,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:24,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1863726548, now seen corresponding path program 7 times [2024-06-14 11:47:24,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:24,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557809091] [2024-06-14 11:47:24,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:25,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:25,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557809091] [2024-06-14 11:47:25,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557809091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:25,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:25,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758788968] [2024-06-14 11:47:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:25,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:25,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:25,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:26,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:26,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 188 transitions, 2091 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:26,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:26,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:26,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:26,437 INFO L124 PetriNetUnfolderBase]: 411/766 cut-off events. [2024-06-14 11:47:26,438 INFO L125 PetriNetUnfolderBase]: For 61072/61072 co-relation queries the response was YES. [2024-06-14 11:47:26,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6509 conditions, 766 events. 411/766 cut-off events. For 61072/61072 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3747 event pairs, 32 based on Foata normal form. 1/765 useless extension candidates. Maximal degree in co-relation 6416. Up to 521 conditions per place. [2024-06-14 11:47:26,444 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 68 changer transitions 0/209 dead transitions. [2024-06-14 11:47:26,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 209 transitions, 3052 flow [2024-06-14 11:47:26,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 11:47:26,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-14 11:47:26,446 INFO L175 Difference]: Start difference. First operand has 194 places, 188 transitions, 2091 flow. Second operand 10 states and 133 transitions. [2024-06-14 11:47:26,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 209 transitions, 3052 flow [2024-06-14 11:47:26,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 209 transitions, 2982 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:26,563 INFO L231 Difference]: Finished difference. Result has 196 places, 193 transitions, 2314 flow [2024-06-14 11:47:26,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2021, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2314, PETRI_PLACES=196, PETRI_TRANSITIONS=193} [2024-06-14 11:47:26,575 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-14 11:47:26,575 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 193 transitions, 2314 flow [2024-06-14 11:47:26,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:26,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:26,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:26,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 11:47:26,576 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)] === [2024-06-14 11:47:26,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1863963946, now seen corresponding path program 2 times [2024-06-14 11:47:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:26,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71458833] [2024-06-14 11:47:26,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:27,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:27,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71458833] [2024-06-14 11:47:27,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71458833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:27,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:27,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:27,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469194218] [2024-06-14 11:47:27,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:27,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:27,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:27,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:27,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:27,681 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:27,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 193 transitions, 2314 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:27,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:27,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:27,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:27,992 INFO L124 PetriNetUnfolderBase]: 409/762 cut-off events. [2024-06-14 11:47:27,992 INFO L125 PetriNetUnfolderBase]: For 61429/61429 co-relation queries the response was YES. [2024-06-14 11:47:27,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6557 conditions, 762 events. 409/762 cut-off events. For 61429/61429 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3726 event pairs, 33 based on Foata normal form. 1/761 useless extension candidates. Maximal degree in co-relation 6463. Up to 588 conditions per place. [2024-06-14 11:47:27,999 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 50 changer transitions 0/204 dead transitions. [2024-06-14 11:47:27,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 204 transitions, 2744 flow [2024-06-14 11:47:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:27,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:28,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-14 11:47:28,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:47:28,000 INFO L175 Difference]: Start difference. First operand has 196 places, 193 transitions, 2314 flow. Second operand 9 states and 117 transitions. [2024-06-14 11:47:28,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 204 transitions, 2744 flow [2024-06-14 11:47:28,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 204 transitions, 2546 flow, removed 57 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:28,111 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 2223 flow [2024-06-14 11:47:28,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2223, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2024-06-14 11:47:28,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-14 11:47:28,111 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 2223 flow [2024-06-14 11:47:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:28,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:28,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 11:47:28,112 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)] === [2024-06-14 11:47:28,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:28,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1863972626, now seen corresponding path program 1 times [2024-06-14 11:47:28,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887480513] [2024-06-14 11:47:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:29,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:29,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:29,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887480513] [2024-06-14 11:47:29,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887480513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:29,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:29,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:29,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027518302] [2024-06-14 11:47:29,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:29,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:29,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:29,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:29,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 2223 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:29,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:29,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:29,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:30,231 INFO L124 PetriNetUnfolderBase]: 413/770 cut-off events. [2024-06-14 11:47:30,231 INFO L125 PetriNetUnfolderBase]: For 64484/64484 co-relation queries the response was YES. [2024-06-14 11:47:30,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6543 conditions, 770 events. 413/770 cut-off events. For 64484/64484 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3790 event pairs, 31 based on Foata normal form. 2/770 useless extension candidates. Maximal degree in co-relation 6448. Up to 683 conditions per place. [2024-06-14 11:47:30,238 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 188 selfloop transitions, 17 changer transitions 0/208 dead transitions. [2024-06-14 11:47:30,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 208 transitions, 2701 flow [2024-06-14 11:47:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:30,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 11:47:30,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 11:47:30,240 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 2223 flow. Second operand 10 states and 118 transitions. [2024-06-14 11:47:30,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 208 transitions, 2701 flow [2024-06-14 11:47:30,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 208 transitions, 2612 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:30,352 INFO L231 Difference]: Finished difference. Result has 202 places, 194 transitions, 2204 flow [2024-06-14 11:47:30,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2204, PETRI_PLACES=202, PETRI_TRANSITIONS=194} [2024-06-14 11:47:30,353 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 11:47:30,354 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 194 transitions, 2204 flow [2024-06-14 11:47:30,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:30,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:30,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:30,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 11:47:30,354 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)] === [2024-06-14 11:47:30,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:30,355 INFO L85 PathProgramCache]: Analyzing trace with hash -676180780, now seen corresponding path program 8 times [2024-06-14 11:47:30,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:30,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300690526] [2024-06-14 11:47:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:30,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:31,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:31,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300690526] [2024-06-14 11:47:31,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300690526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:31,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:31,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:31,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200414053] [2024-06-14 11:47:31,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:31,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:31,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:31,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:31,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:31,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:31,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 194 transitions, 2204 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:31,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:31,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:31,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:31,871 INFO L124 PetriNetUnfolderBase]: 409/764 cut-off events. [2024-06-14 11:47:31,872 INFO L125 PetriNetUnfolderBase]: For 60986/60986 co-relation queries the response was YES. [2024-06-14 11:47:31,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 764 events. 409/764 cut-off events. For 60986/60986 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3758 event pairs, 32 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 6206. Up to 525 conditions per place. [2024-06-14 11:47:31,878 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 137 selfloop transitions, 68 changer transitions 0/208 dead transitions. [2024-06-14 11:47:31,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 208 transitions, 2892 flow [2024-06-14 11:47:31,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:31,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:31,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 11:47:31,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 11:47:31,879 INFO L175 Difference]: Start difference. First operand has 202 places, 194 transitions, 2204 flow. Second operand 10 states and 131 transitions. [2024-06-14 11:47:31,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 208 transitions, 2892 flow [2024-06-14 11:47:31,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 208 transitions, 2782 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:31,995 INFO L231 Difference]: Finished difference. Result has 204 places, 194 transitions, 2237 flow [2024-06-14 11:47:31,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2237, PETRI_PLACES=204, PETRI_TRANSITIONS=194} [2024-06-14 11:47:31,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-06-14 11:47:31,995 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 194 transitions, 2237 flow [2024-06-14 11:47:31,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:31,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:31,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:31,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 11:47:31,996 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)] === [2024-06-14 11:47:31,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2031835174, now seen corresponding path program 5 times [2024-06-14 11:47:31,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:31,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274537997] [2024-06-14 11:47:31,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:31,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:32,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:32,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274537997] [2024-06-14 11:47:32,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274537997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:32,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:32,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:32,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384884713] [2024-06-14 11:47:32,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:32,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:32,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:32,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:32,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:32,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:32,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 194 transitions, 2237 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:32,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:32,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:32,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:33,246 INFO L124 PetriNetUnfolderBase]: 406/760 cut-off events. [2024-06-14 11:47:33,246 INFO L125 PetriNetUnfolderBase]: For 58568/58571 co-relation queries the response was YES. [2024-06-14 11:47:33,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 760 events. 406/760 cut-off events. For 58568/58571 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3740 event pairs, 37 based on Foata normal form. 2/757 useless extension candidates. Maximal degree in co-relation 6076. Up to 633 conditions per place. [2024-06-14 11:47:33,251 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 172 selfloop transitions, 30 changer transitions 0/205 dead transitions. [2024-06-14 11:47:33,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 205 transitions, 2675 flow [2024-06-14 11:47:33,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-14 11:47:33,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3819444444444444 [2024-06-14 11:47:33,253 INFO L175 Difference]: Start difference. First operand has 204 places, 194 transitions, 2237 flow. Second operand 9 states and 110 transitions. [2024-06-14 11:47:33,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 205 transitions, 2675 flow [2024-06-14 11:47:33,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 205 transitions, 2557 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:33,375 INFO L231 Difference]: Finished difference. Result has 205 places, 195 transitions, 2193 flow [2024-06-14 11:47:33,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2193, PETRI_PLACES=205, PETRI_TRANSITIONS=195} [2024-06-14 11:47:33,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-14 11:47:33,376 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 195 transitions, 2193 flow [2024-06-14 11:47:33,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 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) [2024-06-14 11:47:33,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:33,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:33,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 11:47:33,377 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)] === [2024-06-14 11:47:33,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash 123032372, now seen corresponding path program 2 times [2024-06-14 11:47:33,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:33,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50875005] [2024-06-14 11:47:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:33,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:34,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:34,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:34,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50875005] [2024-06-14 11:47:34,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50875005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:34,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:34,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:34,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976265037] [2024-06-14 11:47:34,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:34,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:34,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:34,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:34,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:34,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:34,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 195 transitions, 2193 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:34,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:34,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:35,131 INFO L124 PetriNetUnfolderBase]: 410/768 cut-off events. [2024-06-14 11:47:35,131 INFO L125 PetriNetUnfolderBase]: For 60934/60937 co-relation queries the response was YES. [2024-06-14 11:47:35,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6185 conditions, 768 events. 410/768 cut-off events. For 60934/60937 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 3781 event pairs, 33 based on Foata normal form. 4/768 useless extension candidates. Maximal degree in co-relation 6087. Up to 674 conditions per place. [2024-06-14 11:47:35,138 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 185 selfloop transitions, 19 changer transitions 0/207 dead transitions. [2024-06-14 11:47:35,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 207 transitions, 2663 flow [2024-06-14 11:47:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:35,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-14 11:47:35,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:47:35,139 INFO L175 Difference]: Start difference. First operand has 205 places, 195 transitions, 2193 flow. Second operand 9 states and 108 transitions. [2024-06-14 11:47:35,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 207 transitions, 2663 flow [2024-06-14 11:47:35,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 207 transitions, 2553 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:35,262 INFO L231 Difference]: Finished difference. Result has 206 places, 196 transitions, 2159 flow [2024-06-14 11:47:35,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2159, PETRI_PLACES=206, PETRI_TRANSITIONS=196} [2024-06-14 11:47:35,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-06-14 11:47:35,263 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 196 transitions, 2159 flow [2024-06-14 11:47:35,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:35,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:35,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:35,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 11:47:35,263 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)] === [2024-06-14 11:47:35,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:35,264 INFO L85 PathProgramCache]: Analyzing trace with hash 353019512, now seen corresponding path program 3 times [2024-06-14 11:47:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:35,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130758372] [2024-06-14 11:47:35,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:35,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:36,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:36,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:36,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130758372] [2024-06-14 11:47:36,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130758372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:36,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:36,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:36,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610477900] [2024-06-14 11:47:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:36,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:36,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:36,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:36,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 196 transitions, 2159 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:36,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:36,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:36,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:37,255 INFO L124 PetriNetUnfolderBase]: 421/788 cut-off events. [2024-06-14 11:47:37,255 INFO L125 PetriNetUnfolderBase]: For 67353/67353 co-relation queries the response was YES. [2024-06-14 11:47:37,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6466 conditions, 788 events. 421/788 cut-off events. For 67353/67353 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3915 event pairs, 33 based on Foata normal form. 2/788 useless extension candidates. Maximal degree in co-relation 6367. Up to 686 conditions per place. [2024-06-14 11:47:37,262 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 20 changer transitions 0/212 dead transitions. [2024-06-14 11:47:37,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 212 transitions, 2805 flow [2024-06-14 11:47:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:47:37,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:47:37,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:47:37,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:47:37,264 INFO L175 Difference]: Start difference. First operand has 206 places, 196 transitions, 2159 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:47:37,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 212 transitions, 2805 flow [2024-06-14 11:47:37,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 212 transitions, 2739 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:37,392 INFO L231 Difference]: Finished difference. Result has 210 places, 198 transitions, 2207 flow [2024-06-14 11:47:37,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2207, PETRI_PLACES=210, PETRI_TRANSITIONS=198} [2024-06-14 11:47:37,393 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-06-14 11:47:37,393 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 198 transitions, 2207 flow [2024-06-14 11:47:37,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:37,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:37,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:37,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 11:47:37,394 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)] === [2024-06-14 11:47:37,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:37,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1049698380, now seen corresponding path program 4 times [2024-06-14 11:47:37,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:37,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750622690] [2024-06-14 11:47:37,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:37,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:39,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750622690] [2024-06-14 11:47:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750622690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:39,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:39,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:39,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107342863] [2024-06-14 11:47:39,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:39,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:39,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:39,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:39,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:39,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:39,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 198 transitions, 2207 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:39,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:39,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:39,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:39,490 INFO L124 PetriNetUnfolderBase]: 425/792 cut-off events. [2024-06-14 11:47:39,490 INFO L125 PetriNetUnfolderBase]: For 69102/69102 co-relation queries the response was YES. [2024-06-14 11:47:39,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6534 conditions, 792 events. 425/792 cut-off events. For 69102/69102 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3926 event pairs, 36 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 6434. Up to 713 conditions per place. [2024-06-14 11:47:39,497 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2024-06-14 11:47:39,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 211 transitions, 2687 flow [2024-06-14 11:47:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:47:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:47:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-14 11:47:39,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-14 11:47:39,499 INFO L175 Difference]: Start difference. First operand has 210 places, 198 transitions, 2207 flow. Second operand 11 states and 126 transitions. [2024-06-14 11:47:39,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 211 transitions, 2687 flow [2024-06-14 11:47:39,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 211 transitions, 2619 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:39,668 INFO L231 Difference]: Finished difference. Result has 214 places, 199 transitions, 2219 flow [2024-06-14 11:47:39,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2219, PETRI_PLACES=214, PETRI_TRANSITIONS=199} [2024-06-14 11:47:39,669 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-14 11:47:39,669 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 199 transitions, 2219 flow [2024-06-14 11:47:39,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:39,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:39,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:39,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 11:47:39,670 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)] === [2024-06-14 11:47:39,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:39,670 INFO L85 PathProgramCache]: Analyzing trace with hash 122786294, now seen corresponding path program 9 times [2024-06-14 11:47:39,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:39,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576991164] [2024-06-14 11:47:39,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:39,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:40,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:40,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:40,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576991164] [2024-06-14 11:47:40,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576991164] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:40,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:40,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:40,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187232126] [2024-06-14 11:47:40,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:40,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:40,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:40,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:40,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:40,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:40,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 199 transitions, 2219 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:40,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:40,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:40,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:41,413 INFO L124 PetriNetUnfolderBase]: 453/846 cut-off events. [2024-06-14 11:47:41,413 INFO L125 PetriNetUnfolderBase]: For 82058/82061 co-relation queries the response was YES. [2024-06-14 11:47:41,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7487 conditions, 846 events. 453/846 cut-off events. For 82058/82061 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4280 event pairs, 40 based on Foata normal form. 1/842 useless extension candidates. Maximal degree in co-relation 7385. Up to 631 conditions per place. [2024-06-14 11:47:41,421 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 165 selfloop transitions, 54 changer transitions 0/222 dead transitions. [2024-06-14 11:47:41,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 222 transitions, 3401 flow [2024-06-14 11:47:41,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:41,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:41,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 11:47:41,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-14 11:47:41,422 INFO L175 Difference]: Start difference. First operand has 214 places, 199 transitions, 2219 flow. Second operand 10 states and 134 transitions. [2024-06-14 11:47:41,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 222 transitions, 3401 flow [2024-06-14 11:47:41,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 222 transitions, 3339 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:41,575 INFO L231 Difference]: Finished difference. Result has 216 places, 208 transitions, 2582 flow [2024-06-14 11:47:41,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2582, PETRI_PLACES=216, PETRI_TRANSITIONS=208} [2024-06-14 11:47:41,576 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-14 11:47:41,576 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 208 transitions, 2582 flow [2024-06-14 11:47:41,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:41,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:41,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:41,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 11:47:41,577 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)] === [2024-06-14 11:47:41,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:41,577 INFO L85 PathProgramCache]: Analyzing trace with hash -706738366, now seen corresponding path program 10 times [2024-06-14 11:47:41,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:41,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573237469] [2024-06-14 11:47:41,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:41,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:41,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:42,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:42,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:42,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573237469] [2024-06-14 11:47:42,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573237469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:42,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:42,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:42,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185817359] [2024-06-14 11:47:42,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:42,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:42,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:42,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:42,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:42,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:42,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 208 transitions, 2582 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:42,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:42,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:42,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:43,223 INFO L124 PetriNetUnfolderBase]: 464/868 cut-off events. [2024-06-14 11:47:43,224 INFO L125 PetriNetUnfolderBase]: For 90165/90168 co-relation queries the response was YES. [2024-06-14 11:47:43,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7991 conditions, 868 events. 464/868 cut-off events. For 90165/90168 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4438 event pairs, 42 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 7887. Up to 643 conditions per place. [2024-06-14 11:47:43,232 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 55 changer transitions 0/227 dead transitions. [2024-06-14 11:47:43,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 227 transitions, 3659 flow [2024-06-14 11:47:43,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:43,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 11:47:43,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 11:47:43,233 INFO L175 Difference]: Start difference. First operand has 216 places, 208 transitions, 2582 flow. Second operand 10 states and 135 transitions. [2024-06-14 11:47:43,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 227 transitions, 3659 flow [2024-06-14 11:47:43,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 227 transitions, 3462 flow, removed 81 selfloop flow, removed 4 redundant places. [2024-06-14 11:47:43,398 INFO L231 Difference]: Finished difference. Result has 222 places, 213 transitions, 2673 flow [2024-06-14 11:47:43,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2673, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2024-06-14 11:47:43,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 11:47:43,399 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 2673 flow [2024-06-14 11:47:43,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:43,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:43,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:43,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 11:47:43,400 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)] === [2024-06-14 11:47:43,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1059817710, now seen corresponding path program 5 times [2024-06-14 11:47:43,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:43,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766458900] [2024-06-14 11:47:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:43,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:43,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:44,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:44,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:44,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766458900] [2024-06-14 11:47:44,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766458900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:44,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:44,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:44,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889329868] [2024-06-14 11:47:44,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:44,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:44,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:44,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:44,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:44,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:44,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 2673 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:44,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:44,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:44,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:44,930 INFO L124 PetriNetUnfolderBase]: 461/862 cut-off events. [2024-06-14 11:47:44,930 INFO L125 PetriNetUnfolderBase]: For 86568/86568 co-relation queries the response was YES. [2024-06-14 11:47:44,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 862 events. 461/862 cut-off events. For 86568/86568 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4408 event pairs, 37 based on Foata normal form. 2/862 useless extension candidates. Maximal degree in co-relation 7648. Up to 765 conditions per place. [2024-06-14 11:47:44,937 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 202 selfloop transitions, 18 changer transitions 0/223 dead transitions. [2024-06-14 11:47:44,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 223 transitions, 3137 flow [2024-06-14 11:47:44,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:44,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:44,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-14 11:47:44,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-14 11:47:44,939 INFO L175 Difference]: Start difference. First operand has 222 places, 213 transitions, 2673 flow. Second operand 9 states and 107 transitions. [2024-06-14 11:47:44,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 223 transitions, 3137 flow [2024-06-14 11:47:45,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 223 transitions, 2968 flow, removed 42 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:45,107 INFO L231 Difference]: Finished difference. Result has 225 places, 213 transitions, 2546 flow [2024-06-14 11:47:45,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2546, PETRI_PLACES=225, PETRI_TRANSITIONS=213} [2024-06-14 11:47:45,108 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-14 11:47:45,108 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 213 transitions, 2546 flow [2024-06-14 11:47:45,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:45,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:45,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:45,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 11:47:45,109 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)] === [2024-06-14 11:47:45,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash -706499108, now seen corresponding path program 3 times [2024-06-14 11:47:45,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:45,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352768962] [2024-06-14 11:47:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:45,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:46,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:46,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:46,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352768962] [2024-06-14 11:47:46,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352768962] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:46,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:46,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 11:47:46,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182587843] [2024-06-14 11:47:46,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:46,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 11:47:46,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:46,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 11:47:46,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 11:47:46,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:46,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 213 transitions, 2546 flow. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:46,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:46,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:46,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:46,529 INFO L124 PetriNetUnfolderBase]: 459/860 cut-off events. [2024-06-14 11:47:46,536 INFO L125 PetriNetUnfolderBase]: For 82425/82428 co-relation queries the response was YES. [2024-06-14 11:47:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7481 conditions, 860 events. 459/860 cut-off events. For 82425/82428 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4414 event pairs, 40 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 7374. Up to 685 conditions per place. [2024-06-14 11:47:46,545 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 173 selfloop transitions, 47 changer transitions 0/223 dead transitions. [2024-06-14 11:47:46,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 223 transitions, 3148 flow [2024-06-14 11:47:46,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 11:47:46,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 11:47:46,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 11:47:46,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-14 11:47:46,546 INFO L175 Difference]: Start difference. First operand has 225 places, 213 transitions, 2546 flow. Second operand 9 states and 119 transitions. [2024-06-14 11:47:46,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 223 transitions, 3148 flow [2024-06-14 11:47:46,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 223 transitions, 3088 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:46,733 INFO L231 Difference]: Finished difference. Result has 226 places, 213 transitions, 2589 flow [2024-06-14 11:47:46,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2488, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2589, PETRI_PLACES=226, PETRI_TRANSITIONS=213} [2024-06-14 11:47:46,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-14 11:47:46,734 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 213 transitions, 2589 flow [2024-06-14 11:47:46,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 10 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:46,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:46,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:46,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 11:47:46,735 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)] === [2024-06-14 11:47:46,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash -706507726, now seen corresponding path program 11 times [2024-06-14 11:47:46,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:46,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368937319] [2024-06-14 11:47:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:46,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:47,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:47,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368937319] [2024-06-14 11:47:47,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368937319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:47,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:47,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:47,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014701865] [2024-06-14 11:47:47,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:47,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:47,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:47,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:47,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:48,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:48,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 213 transitions, 2589 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:48,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:48,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:48,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:48,406 INFO L124 PetriNetUnfolderBase]: 455/856 cut-off events. [2024-06-14 11:47:48,406 INFO L125 PetriNetUnfolderBase]: For 80550/80553 co-relation queries the response was YES. [2024-06-14 11:47:48,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7329 conditions, 856 events. 455/856 cut-off events. For 80550/80553 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4397 event pairs, 39 based on Foata normal form. 2/853 useless extension candidates. Maximal degree in co-relation 7221. Up to 634 conditions per place. [2024-06-14 11:47:48,413 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 166 selfloop transitions, 57 changer transitions 0/226 dead transitions. [2024-06-14 11:47:48,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 226 transitions, 3367 flow [2024-06-14 11:47:48,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:48,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:48,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 11:47:48,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-14 11:47:48,414 INFO L175 Difference]: Start difference. First operand has 226 places, 213 transitions, 2589 flow. Second operand 10 states and 132 transitions. [2024-06-14 11:47:48,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 226 transitions, 3367 flow [2024-06-14 11:47:48,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 3192 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:48,578 INFO L231 Difference]: Finished difference. Result has 228 places, 213 transitions, 2539 flow [2024-06-14 11:47:48,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2539, PETRI_PLACES=228, PETRI_TRANSITIONS=213} [2024-06-14 11:47:48,579 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-14 11:47:48,579 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 213 transitions, 2539 flow [2024-06-14 11:47:48,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:48,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:48,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:48,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 11:47:48,579 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)] === [2024-06-14 11:47:48,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:48,580 INFO L85 PathProgramCache]: Analyzing trace with hash -712994476, now seen corresponding path program 12 times [2024-06-14 11:47:48,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:48,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577302121] [2024-06-14 11:47:48,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:48,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:49,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:49,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:49,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577302121] [2024-06-14 11:47:49,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577302121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:49,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:49,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:49,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514094859] [2024-06-14 11:47:49,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:49,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:49,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:49,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:49,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:49,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:49,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 213 transitions, 2539 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:49,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:49,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:49,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:50,269 INFO L124 PetriNetUnfolderBase]: 462/871 cut-off events. [2024-06-14 11:47:50,269 INFO L125 PetriNetUnfolderBase]: For 81527/81530 co-relation queries the response was YES. [2024-06-14 11:47:50,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7437 conditions, 871 events. 462/871 cut-off events. For 81527/81530 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4507 event pairs, 39 based on Foata normal form. 2/868 useless extension candidates. Maximal degree in co-relation 7329. Up to 696 conditions per place. [2024-06-14 11:47:50,277 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 183 selfloop transitions, 42 changer transitions 0/228 dead transitions. [2024-06-14 11:47:50,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 228 transitions, 3277 flow [2024-06-14 11:47:50,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:50,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 11:47:50,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 11:47:50,278 INFO L175 Difference]: Start difference. First operand has 228 places, 213 transitions, 2539 flow. Second operand 10 states and 126 transitions. [2024-06-14 11:47:50,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 228 transitions, 3277 flow [2024-06-14 11:47:50,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 228 transitions, 3159 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 11:47:50,439 INFO L231 Difference]: Finished difference. Result has 230 places, 216 transitions, 2610 flow [2024-06-14 11:47:50,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2425, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2610, PETRI_PLACES=230, PETRI_TRANSITIONS=216} [2024-06-14 11:47:50,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-14 11:47:50,440 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 216 transitions, 2610 flow [2024-06-14 11:47:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:50,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:50,440 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:50,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 11:47:50,440 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)] === [2024-06-14 11:47:50,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:50,441 INFO L85 PathProgramCache]: Analyzing trace with hash -713000986, now seen corresponding path program 13 times [2024-06-14 11:47:50,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:50,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756067528] [2024-06-14 11:47:50,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:50,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:51,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:51,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:51,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756067528] [2024-06-14 11:47:51,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756067528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:51,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:51,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:51,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209630385] [2024-06-14 11:47:51,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:51,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:51,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:51,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:51,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:51,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 216 transitions, 2610 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:51,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:51,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:51,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:52,191 INFO L124 PetriNetUnfolderBase]: 460/868 cut-off events. [2024-06-14 11:47:52,191 INFO L125 PetriNetUnfolderBase]: For 79224/79227 co-relation queries the response was YES. [2024-06-14 11:47:52,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7328 conditions, 868 events. 460/868 cut-off events. For 79224/79227 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4487 event pairs, 38 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 7219. Up to 695 conditions per place. [2024-06-14 11:47:52,199 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 182 selfloop transitions, 44 changer transitions 0/229 dead transitions. [2024-06-14 11:47:52,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 229 transitions, 3305 flow [2024-06-14 11:47:52,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:47:52,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 11:47:52,200 INFO L175 Difference]: Start difference. First operand has 230 places, 216 transitions, 2610 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:47:52,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 229 transitions, 3305 flow [2024-06-14 11:47:52,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 3116 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-14 11:47:52,351 INFO L231 Difference]: Finished difference. Result has 231 places, 218 transitions, 2593 flow [2024-06-14 11:47:52,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2593, PETRI_PLACES=231, PETRI_TRANSITIONS=218} [2024-06-14 11:47:52,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-14 11:47:52,351 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 218 transitions, 2593 flow [2024-06-14 11:47:52,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:52,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:52,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:52,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 11:47:52,352 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)] === [2024-06-14 11:47:52,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:52,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1059826638, now seen corresponding path program 14 times [2024-06-14 11:47:52,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:52,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714575515] [2024-06-14 11:47:52,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:52,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:53,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:53,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:53,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714575515] [2024-06-14 11:47:53,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714575515] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:53,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:53,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:53,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080336948] [2024-06-14 11:47:53,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:53,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:53,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:53,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:53,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:53,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:53,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 218 transitions, 2593 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:53,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:53,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:53,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:53,815 INFO L124 PetriNetUnfolderBase]: 471/889 cut-off events. [2024-06-14 11:47:53,815 INFO L125 PetriNetUnfolderBase]: For 85520/85520 co-relation queries the response was YES. [2024-06-14 11:47:53,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7577 conditions, 889 events. 471/889 cut-off events. For 85520/85520 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4639 event pairs, 34 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 7467. Up to 775 conditions per place. [2024-06-14 11:47:53,823 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 23 changer transitions 0/235 dead transitions. [2024-06-14 11:47:53,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 235 transitions, 3429 flow [2024-06-14 11:47:53,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:53,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:47:53,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 11:47:53,824 INFO L175 Difference]: Start difference. First operand has 231 places, 218 transitions, 2593 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:47:53,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 235 transitions, 3429 flow [2024-06-14 11:47:53,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 235 transitions, 3281 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-14 11:47:54,002 INFO L231 Difference]: Finished difference. Result has 234 places, 223 transitions, 2675 flow [2024-06-14 11:47:54,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2445, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2675, PETRI_PLACES=234, PETRI_TRANSITIONS=223} [2024-06-14 11:47:54,002 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-14 11:47:54,002 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 223 transitions, 2675 flow [2024-06-14 11:47:54,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:54,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:54,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:54,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 11:47:54,003 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)] === [2024-06-14 11:47:54,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:54,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1344917580, now seen corresponding path program 6 times [2024-06-14 11:47:54,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:54,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528701587] [2024-06-14 11:47:54,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:54,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:55,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:55,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:55,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528701587] [2024-06-14 11:47:55,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528701587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:55,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:55,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928482102] [2024-06-14 11:47:55,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:55,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:55,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:55,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:55,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 223 transitions, 2675 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:55,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:55,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:55,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:55,968 INFO L124 PetriNetUnfolderBase]: 468/885 cut-off events. [2024-06-14 11:47:55,968 INFO L125 PetriNetUnfolderBase]: For 83004/83007 co-relation queries the response was YES. [2024-06-14 11:47:55,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 885 events. 468/885 cut-off events. For 83004/83007 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4634 event pairs, 32 based on Foata normal form. 4/885 useless extension candidates. Maximal degree in co-relation 7233. Up to 753 conditions per place. [2024-06-14 11:47:55,978 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 30 changer transitions 0/235 dead transitions. [2024-06-14 11:47:55,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 235 transitions, 3171 flow [2024-06-14 11:47:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:55,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:47:55,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:47:55,979 INFO L175 Difference]: Start difference. First operand has 234 places, 223 transitions, 2675 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:47:55,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 235 transitions, 3171 flow [2024-06-14 11:47:56,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 235 transitions, 3039 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-14 11:47:56,162 INFO L231 Difference]: Finished difference. Result has 238 places, 223 transitions, 2607 flow [2024-06-14 11:47:56,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2607, PETRI_PLACES=238, PETRI_TRANSITIONS=223} [2024-06-14 11:47:56,163 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-14 11:47:56,163 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 223 transitions, 2607 flow [2024-06-14 11:47:56,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:56,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:56,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:56,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 11:47:56,164 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)] === [2024-06-14 11:47:56,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:56,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1344926508, now seen corresponding path program 15 times [2024-06-14 11:47:56,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:56,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935288198] [2024-06-14 11:47:56,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:56,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:57,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:57,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:57,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935288198] [2024-06-14 11:47:57,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935288198] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:57,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000777445] [2024-06-14 11:47:57,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:57,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:57,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:57,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:57,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:57,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:57,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 223 transitions, 2607 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:57,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:57,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:57,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:47:57,897 INFO L124 PetriNetUnfolderBase]: 479/903 cut-off events. [2024-06-14 11:47:57,897 INFO L125 PetriNetUnfolderBase]: For 87357/87360 co-relation queries the response was YES. [2024-06-14 11:47:57,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7630 conditions, 903 events. 479/903 cut-off events. For 87357/87360 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4725 event pairs, 38 based on Foata normal form. 2/900 useless extension candidates. Maximal degree in co-relation 7517. Up to 451 conditions per place. [2024-06-14 11:47:57,904 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 133 selfloop transitions, 111 changer transitions 0/247 dead transitions. [2024-06-14 11:47:57,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 247 transitions, 4069 flow [2024-06-14 11:47:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:47:57,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:47:57,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 11:47:57,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-14 11:47:57,905 INFO L175 Difference]: Start difference. First operand has 238 places, 223 transitions, 2607 flow. Second operand 10 states and 139 transitions. [2024-06-14 11:47:57,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 247 transitions, 4069 flow [2024-06-14 11:47:58,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 247 transitions, 3927 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-14 11:47:58,101 INFO L231 Difference]: Finished difference. Result has 237 places, 230 transitions, 2955 flow [2024-06-14 11:47:58,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2465, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2955, PETRI_PLACES=237, PETRI_TRANSITIONS=230} [2024-06-14 11:47:58,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-14 11:47:58,102 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 230 transitions, 2955 flow [2024-06-14 11:47:58,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:58,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:47:58,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:47:58,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 11:47:58,102 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)] === [2024-06-14 11:47:58,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:47:58,103 INFO L85 PathProgramCache]: Analyzing trace with hash -712994228, now seen corresponding path program 4 times [2024-06-14 11:47:58,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:47:58,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317206490] [2024-06-14 11:47:58,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:47:58,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:47:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:47:59,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:47:59,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:47:59,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317206490] [2024-06-14 11:47:59,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317206490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:47:59,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:47:59,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:47:59,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233763552] [2024-06-14 11:47:59,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:47:59,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:47:59,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:47:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:47:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:47:59,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:47:59,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 230 transitions, 2955 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:47:59,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:47:59,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:47:59,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:00,220 INFO L124 PetriNetUnfolderBase]: 474/892 cut-off events. [2024-06-14 11:48:00,220 INFO L125 PetriNetUnfolderBase]: For 84747/84750 co-relation queries the response was YES. [2024-06-14 11:48:00,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7562 conditions, 892 events. 474/892 cut-off events. For 84747/84750 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4667 event pairs, 42 based on Foata normal form. 2/887 useless extension candidates. Maximal degree in co-relation 7450. Up to 721 conditions per place. [2024-06-14 11:48:00,229 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 199 selfloop transitions, 38 changer transitions 0/240 dead transitions. [2024-06-14 11:48:00,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 240 transitions, 3453 flow [2024-06-14 11:48:00,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:00,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-14 11:48:00,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 11:48:00,230 INFO L175 Difference]: Start difference. First operand has 237 places, 230 transitions, 2955 flow. Second operand 10 states and 125 transitions. [2024-06-14 11:48:00,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 240 transitions, 3453 flow [2024-06-14 11:48:00,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 240 transitions, 3043 flow, removed 99 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:00,434 INFO L231 Difference]: Finished difference. Result has 239 places, 230 transitions, 2627 flow [2024-06-14 11:48:00,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2627, PETRI_PLACES=239, PETRI_TRANSITIONS=230} [2024-06-14 11:48:00,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-14 11:48:00,435 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 230 transitions, 2627 flow [2024-06-14 11:48:00,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:00,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:00,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:00,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 11:48:00,435 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)] === [2024-06-14 11:48:00,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:00,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1345163658, now seen corresponding path program 16 times [2024-06-14 11:48:00,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:00,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559081153] [2024-06-14 11:48:00,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:00,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:01,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:01,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:01,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559081153] [2024-06-14 11:48:01,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559081153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:01,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:01,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:01,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232315265] [2024-06-14 11:48:01,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:01,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:01,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:01,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:01,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:01,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:01,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 230 transitions, 2627 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:01,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:01,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:01,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:02,339 INFO L124 PetriNetUnfolderBase]: 482/911 cut-off events. [2024-06-14 11:48:02,340 INFO L125 PetriNetUnfolderBase]: For 84024/84027 co-relation queries the response was YES. [2024-06-14 11:48:02,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7354 conditions, 911 events. 482/911 cut-off events. For 84024/84027 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4809 event pairs, 37 based on Foata normal form. 1/907 useless extension candidates. Maximal degree in co-relation 7243. Up to 454 conditions per place. [2024-06-14 11:48:02,348 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 124 selfloop transitions, 122 changer transitions 0/249 dead transitions. [2024-06-14 11:48:02,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 3809 flow [2024-06-14 11:48:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 11:48:02,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-14 11:48:02,349 INFO L175 Difference]: Start difference. First operand has 239 places, 230 transitions, 2627 flow. Second operand 10 states and 135 transitions. [2024-06-14 11:48:02,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 3809 flow [2024-06-14 11:48:02,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 249 transitions, 3703 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:48:02,525 INFO L231 Difference]: Finished difference. Result has 240 places, 235 transitions, 2963 flow [2024-06-14 11:48:02,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2963, PETRI_PLACES=240, PETRI_TRANSITIONS=235} [2024-06-14 11:48:02,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 209 predicate places. [2024-06-14 11:48:02,526 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 235 transitions, 2963 flow [2024-06-14 11:48:02,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:02,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:02,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:02,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 11:48:02,527 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)] === [2024-06-14 11:48:02,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:02,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1345157148, now seen corresponding path program 17 times [2024-06-14 11:48:02,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:02,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860629813] [2024-06-14 11:48:02,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:02,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:03,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:03,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:03,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860629813] [2024-06-14 11:48:03,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860629813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:03,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:03,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:03,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350339146] [2024-06-14 11:48:03,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:03,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:03,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:03,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:03,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:03,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:03,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 235 transitions, 2963 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:03,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:03,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:03,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:04,376 INFO L124 PetriNetUnfolderBase]: 478/905 cut-off events. [2024-06-14 11:48:04,376 INFO L125 PetriNetUnfolderBase]: For 84167/84170 co-relation queries the response was YES. [2024-06-14 11:48:04,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7408 conditions, 905 events. 478/905 cut-off events. For 84167/84170 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 4762 event pairs, 37 based on Foata normal form. 2/902 useless extension candidates. Maximal degree in co-relation 7295. Up to 451 conditions per place. [2024-06-14 11:48:04,383 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 117 changer transitions 0/250 dead transitions. [2024-06-14 11:48:04,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 250 transitions, 4023 flow [2024-06-14 11:48:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 11:48:04,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-14 11:48:04,385 INFO L175 Difference]: Start difference. First operand has 240 places, 235 transitions, 2963 flow. Second operand 10 states and 136 transitions. [2024-06-14 11:48:04,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 250 transitions, 4023 flow [2024-06-14 11:48:04,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 250 transitions, 3668 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:04,626 INFO L231 Difference]: Finished difference. Result has 244 places, 235 transitions, 2848 flow [2024-06-14 11:48:04,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2848, PETRI_PLACES=244, PETRI_TRANSITIONS=235} [2024-06-14 11:48:04,626 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-14 11:48:04,627 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 235 transitions, 2848 flow [2024-06-14 11:48:04,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:04,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:04,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:04,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 11:48:04,627 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)] === [2024-06-14 11:48:04,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash 421021419, now seen corresponding path program 1 times [2024-06-14 11:48:04,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:04,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293794525] [2024-06-14 11:48:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:04,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:05,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:05,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:05,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293794525] [2024-06-14 11:48:05,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293794525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:05,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:05,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:05,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025352549] [2024-06-14 11:48:05,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:05,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:05,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:05,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:05,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:05,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:05,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 235 transitions, 2848 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:05,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:05,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:05,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:06,202 INFO L124 PetriNetUnfolderBase]: 482/912 cut-off events. [2024-06-14 11:48:06,203 INFO L125 PetriNetUnfolderBase]: For 85764/85764 co-relation queries the response was YES. [2024-06-14 11:48:06,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 912 events. 482/912 cut-off events. For 85764/85764 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4822 event pairs, 13 based on Foata normal form. 2/912 useless extension candidates. Maximal degree in co-relation 7229. Up to 760 conditions per place. [2024-06-14 11:48:06,212 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 235 selfloop transitions, 19 changer transitions 0/257 dead transitions. [2024-06-14 11:48:06,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 257 transitions, 3442 flow [2024-06-14 11:48:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:06,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:06,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:48:06,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 11:48:06,213 INFO L175 Difference]: Start difference. First operand has 244 places, 235 transitions, 2848 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:48:06,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 257 transitions, 3442 flow [2024-06-14 11:48:06,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 257 transitions, 3187 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:48:06,419 INFO L231 Difference]: Finished difference. Result has 245 places, 236 transitions, 2665 flow [2024-06-14 11:48:06,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2593, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2665, PETRI_PLACES=245, PETRI_TRANSITIONS=236} [2024-06-14 11:48:06,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 11:48:06,420 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 236 transitions, 2665 flow [2024-06-14 11:48:06,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:06,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:06,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:06,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 11:48:06,421 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)] === [2024-06-14 11:48:06,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:06,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1535897479, now seen corresponding path program 2 times [2024-06-14 11:48:06,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:06,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646920560] [2024-06-14 11:48:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:06,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:07,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:07,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646920560] [2024-06-14 11:48:07,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646920560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:07,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:07,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:07,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375520968] [2024-06-14 11:48:07,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:07,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:07,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:07,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:07,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:07,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:07,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 236 transitions, 2665 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:07,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:07,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:07,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:08,038 INFO L124 PetriNetUnfolderBase]: 486/920 cut-off events. [2024-06-14 11:48:08,038 INFO L125 PetriNetUnfolderBase]: For 87272/87272 co-relation queries the response was YES. [2024-06-14 11:48:08,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7205 conditions, 920 events. 486/920 cut-off events. For 87272/87272 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 4877 event pairs, 27 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 7090. Up to 785 conditions per place. [2024-06-14 11:48:08,047 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 234 selfloop transitions, 20 changer transitions 0/257 dead transitions. [2024-06-14 11:48:08,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 257 transitions, 3259 flow [2024-06-14 11:48:08,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:48:08,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 11:48:08,048 INFO L175 Difference]: Start difference. First operand has 245 places, 236 transitions, 2665 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:48:08,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 257 transitions, 3259 flow [2024-06-14 11:48:08,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 257 transitions, 3197 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:08,276 INFO L231 Difference]: Finished difference. Result has 247 places, 237 transitions, 2679 flow [2024-06-14 11:48:08,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2603, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2679, PETRI_PLACES=247, PETRI_TRANSITIONS=237} [2024-06-14 11:48:08,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-14 11:48:08,277 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 237 transitions, 2679 flow [2024-06-14 11:48:08,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:08,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:08,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:08,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 11:48:08,278 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)] === [2024-06-14 11:48:08,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1535901199, now seen corresponding path program 3 times [2024-06-14 11:48:08,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:08,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764375545] [2024-06-14 11:48:08,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:08,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:08,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:09,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:09,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764375545] [2024-06-14 11:48:09,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764375545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:09,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:09,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:09,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026597462] [2024-06-14 11:48:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:09,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:09,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:09,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:09,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:09,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:09,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 237 transitions, 2679 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:09,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:09,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:09,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:09,768 INFO L124 PetriNetUnfolderBase]: 490/928 cut-off events. [2024-06-14 11:48:09,768 INFO L125 PetriNetUnfolderBase]: For 91214/91214 co-relation queries the response was YES. [2024-06-14 11:48:09,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7269 conditions, 928 events. 490/928 cut-off events. For 91214/91214 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 4954 event pairs, 29 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 7153. Up to 798 conditions per place. [2024-06-14 11:48:09,776 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 21 changer transitions 0/257 dead transitions. [2024-06-14 11:48:09,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 257 transitions, 3273 flow [2024-06-14 11:48:09,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:09,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:48:09,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 11:48:09,778 INFO L175 Difference]: Start difference. First operand has 247 places, 237 transitions, 2679 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:48:09,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 257 transitions, 3273 flow [2024-06-14 11:48:10,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 257 transitions, 3207 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:10,023 INFO L231 Difference]: Finished difference. Result has 249 places, 238 transitions, 2693 flow [2024-06-14 11:48:10,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2613, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2693, PETRI_PLACES=249, PETRI_TRANSITIONS=238} [2024-06-14 11:48:10,024 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-14 11:48:10,024 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 238 transitions, 2693 flow [2024-06-14 11:48:10,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:10,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:10,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:10,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 11:48:10,025 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)] === [2024-06-14 11:48:10,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:10,026 INFO L85 PathProgramCache]: Analyzing trace with hash 907158513, now seen corresponding path program 4 times [2024-06-14 11:48:10,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:10,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764006287] [2024-06-14 11:48:10,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:10,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:11,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:11,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:11,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764006287] [2024-06-14 11:48:11,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764006287] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:11,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:11,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:11,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832669694] [2024-06-14 11:48:11,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:11,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:11,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:11,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:11,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:11,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:11,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 238 transitions, 2693 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:11,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:11,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:11,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:11,730 INFO L124 PetriNetUnfolderBase]: 494/936 cut-off events. [2024-06-14 11:48:11,730 INFO L125 PetriNetUnfolderBase]: For 93535/93535 co-relation queries the response was YES. [2024-06-14 11:48:11,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 936 events. 494/936 cut-off events. For 93535/93535 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5005 event pairs, 29 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 7216. Up to 800 conditions per place. [2024-06-14 11:48:11,738 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 226 selfloop transitions, 26 changer transitions 0/255 dead transitions. [2024-06-14 11:48:11,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 255 transitions, 3275 flow [2024-06-14 11:48:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:48:11,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 11:48:11,739 INFO L175 Difference]: Start difference. First operand has 249 places, 238 transitions, 2693 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:48:11,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 255 transitions, 3275 flow [2024-06-14 11:48:11,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 255 transitions, 3205 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:11,985 INFO L231 Difference]: Finished difference. Result has 251 places, 239 transitions, 2715 flow [2024-06-14 11:48:11,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2623, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2715, PETRI_PLACES=251, PETRI_TRANSITIONS=239} [2024-06-14 11:48:11,985 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-14 11:48:11,985 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 239 transitions, 2715 flow [2024-06-14 11:48:11,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:11,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:11,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:11,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 11:48:11,986 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)] === [2024-06-14 11:48:11,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:11,986 INFO L85 PathProgramCache]: Analyzing trace with hash 901796133, now seen corresponding path program 5 times [2024-06-14 11:48:11,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:11,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581364723] [2024-06-14 11:48:11,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:11,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:13,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:13,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:13,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581364723] [2024-06-14 11:48:13,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581364723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:13,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:13,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380849186] [2024-06-14 11:48:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:13,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:13,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:13,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:13,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 239 transitions, 2715 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:13,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:13,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:13,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:13,788 INFO L124 PetriNetUnfolderBase]: 498/944 cut-off events. [2024-06-14 11:48:13,788 INFO L125 PetriNetUnfolderBase]: For 95781/95781 co-relation queries the response was YES. [2024-06-14 11:48:13,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7404 conditions, 944 events. 498/944 cut-off events. For 95781/95781 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5066 event pairs, 31 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 7286. Up to 816 conditions per place. [2024-06-14 11:48:13,799 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 230 selfloop transitions, 24 changer transitions 0/257 dead transitions. [2024-06-14 11:48:13,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 257 transitions, 3316 flow [2024-06-14 11:48:13,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:13,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:48:13,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 11:48:13,800 INFO L175 Difference]: Start difference. First operand has 251 places, 239 transitions, 2715 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:48:13,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 257 transitions, 3316 flow [2024-06-14 11:48:14,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 257 transitions, 3232 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:14,030 INFO L231 Difference]: Finished difference. Result has 254 places, 241 transitions, 2740 flow [2024-06-14 11:48:14,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2633, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2740, PETRI_PLACES=254, PETRI_TRANSITIONS=241} [2024-06-14 11:48:14,030 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-14 11:48:14,030 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 241 transitions, 2740 flow [2024-06-14 11:48:14,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:14,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:14,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:14,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 11:48:14,031 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)] === [2024-06-14 11:48:14,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:14,031 INFO L85 PathProgramCache]: Analyzing trace with hash 901648263, now seen corresponding path program 6 times [2024-06-14 11:48:14,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:14,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953597748] [2024-06-14 11:48:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:14,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:15,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:15,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:15,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953597748] [2024-06-14 11:48:15,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953597748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:15,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:15,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:15,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755646890] [2024-06-14 11:48:15,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:15,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:15,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:15,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:15,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:15,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:15,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 241 transitions, 2740 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:15,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:15,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:15,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:15,814 INFO L124 PetriNetUnfolderBase]: 502/952 cut-off events. [2024-06-14 11:48:15,814 INFO L125 PetriNetUnfolderBase]: For 98151/98151 co-relation queries the response was YES. [2024-06-14 11:48:15,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7469 conditions, 952 events. 502/952 cut-off events. For 98151/98151 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5139 event pairs, 29 based on Foata normal form. 2/952 useless extension candidates. Maximal degree in co-relation 7349. Up to 819 conditions per place. [2024-06-14 11:48:15,823 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 23 changer transitions 0/259 dead transitions. [2024-06-14 11:48:15,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 259 transitions, 3336 flow [2024-06-14 11:48:15,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:15,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:15,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:48:15,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 11:48:15,824 INFO L175 Difference]: Start difference. First operand has 254 places, 241 transitions, 2740 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:48:15,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 259 transitions, 3336 flow [2024-06-14 11:48:16,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 3260 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:16,077 INFO L231 Difference]: Finished difference. Result has 257 places, 242 transitions, 2754 flow [2024-06-14 11:48:16,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2664, PETRI_DIFFERENCE_MINUEND_PLACES=247, 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=10, PETRI_FLOW=2754, PETRI_PLACES=257, PETRI_TRANSITIONS=242} [2024-06-14 11:48:16,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-14 11:48:16,078 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 242 transitions, 2754 flow [2024-06-14 11:48:16,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:16,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:16,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:16,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 11:48:16,078 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)] === [2024-06-14 11:48:16,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 907164465, now seen corresponding path program 1 times [2024-06-14 11:48:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:16,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042312390] [2024-06-14 11:48:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:16,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:18,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:18,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:18,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042312390] [2024-06-14 11:48:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042312390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:18,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:18,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:18,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35534747] [2024-06-14 11:48:18,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:18,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:18,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:18,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:18,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:18,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:18,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 242 transitions, 2754 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:18,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:18,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:18,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:18,771 INFO L124 PetriNetUnfolderBase]: 505/957 cut-off events. [2024-06-14 11:48:18,771 INFO L125 PetriNetUnfolderBase]: For 96801/96801 co-relation queries the response was YES. [2024-06-14 11:48:18,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 957 events. 505/957 cut-off events. For 96801/96801 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5157 event pairs, 31 based on Foata normal form. 1/956 useless extension candidates. Maximal degree in co-relation 7386. Up to 771 conditions per place. [2024-06-14 11:48:18,779 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 44 changer transitions 0/263 dead transitions. [2024-06-14 11:48:18,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 263 transitions, 3714 flow [2024-06-14 11:48:18,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:18,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:48:18,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 11:48:18,781 INFO L175 Difference]: Start difference. First operand has 257 places, 242 transitions, 2754 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:48:18,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 263 transitions, 3714 flow [2024-06-14 11:48:19,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 263 transitions, 3634 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:19,161 INFO L231 Difference]: Finished difference. Result has 260 places, 244 transitions, 2823 flow [2024-06-14 11:48:19,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2674, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=260, PETRI_TRANSITIONS=244} [2024-06-14 11:48:19,161 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 11:48:19,161 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 244 transitions, 2823 flow [2024-06-14 11:48:19,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:19,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:19,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:19,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 11:48:19,162 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)] === [2024-06-14 11:48:19,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:19,163 INFO L85 PathProgramCache]: Analyzing trace with hash 907366275, now seen corresponding path program 2 times [2024-06-14 11:48:19,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:19,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971787062] [2024-06-14 11:48:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:19,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:20,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971787062] [2024-06-14 11:48:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971787062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:20,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:20,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:20,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043101706] [2024-06-14 11:48:20,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:20,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:20,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:20,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:20,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:20,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 244 transitions, 2823 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:20,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:20,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:20,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:21,492 INFO L124 PetriNetUnfolderBase]: 501/951 cut-off events. [2024-06-14 11:48:21,493 INFO L125 PetriNetUnfolderBase]: For 94959/94959 co-relation queries the response was YES. [2024-06-14 11:48:21,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 951 events. 501/951 cut-off events. For 94959/94959 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5140 event pairs, 31 based on Foata normal form. 2/951 useless extension candidates. Maximal degree in co-relation 7150. Up to 794 conditions per place. [2024-06-14 11:48:21,502 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 218 selfloop transitions, 39 changer transitions 0/260 dead transitions. [2024-06-14 11:48:21,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 260 transitions, 3381 flow [2024-06-14 11:48:21,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:21,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:48:21,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:48:21,503 INFO L175 Difference]: Start difference. First operand has 260 places, 244 transitions, 2823 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:48:21,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 260 transitions, 3381 flow [2024-06-14 11:48:21,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 260 transitions, 3203 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:21,773 INFO L231 Difference]: Finished difference. Result has 264 places, 244 transitions, 2736 flow [2024-06-14 11:48:21,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2736, PETRI_PLACES=264, PETRI_TRANSITIONS=244} [2024-06-14 11:48:21,774 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-14 11:48:21,774 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 244 transitions, 2736 flow [2024-06-14 11:48:21,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:21,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:21,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:21,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 11:48:21,775 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)] === [2024-06-14 11:48:21,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 888939968, now seen corresponding path program 1 times [2024-06-14 11:48:21,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:21,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310729509] [2024-06-14 11:48:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:21,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:21,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:22,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:22,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310729509] [2024-06-14 11:48:22,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310729509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:22,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:22,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734038661] [2024-06-14 11:48:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:22,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:22,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:22,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:23,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:23,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 244 transitions, 2736 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:48:23,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:23,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:23,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:23,485 INFO L124 PetriNetUnfolderBase]: 521/995 cut-off events. [2024-06-14 11:48:23,486 INFO L125 PetriNetUnfolderBase]: For 134387/134387 co-relation queries the response was YES. [2024-06-14 11:48:23,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7542 conditions, 995 events. 521/995 cut-off events. For 134387/134387 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5452 event pairs, 35 based on Foata normal form. 12/1005 useless extension candidates. Maximal degree in co-relation 7418. Up to 808 conditions per place. [2024-06-14 11:48:23,494 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 27 changer transitions 7/265 dead transitions. [2024-06-14 11:48:23,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 265 transitions, 3428 flow [2024-06-14 11:48:23,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 11:48:23,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-14 11:48:23,496 INFO L175 Difference]: Start difference. First operand has 264 places, 244 transitions, 2736 flow. Second operand 10 states and 129 transitions. [2024-06-14 11:48:23,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 265 transitions, 3428 flow [2024-06-14 11:48:23,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 265 transitions, 3294 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:48:23,764 INFO L231 Difference]: Finished difference. Result has 264 places, 242 transitions, 2639 flow [2024-06-14 11:48:23,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2639, PETRI_PLACES=264, PETRI_TRANSITIONS=242} [2024-06-14 11:48:23,765 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 233 predicate places. [2024-06-14 11:48:23,765 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 242 transitions, 2639 flow [2024-06-14 11:48:23,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:48:23,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:23,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:23,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 11:48:23,765 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)] === [2024-06-14 11:48:23,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:23,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1747004371, now seen corresponding path program 7 times [2024-06-14 11:48:23,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:23,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833560139] [2024-06-14 11:48:23,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:23,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:25,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:25,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:25,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833560139] [2024-06-14 11:48:25,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833560139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:25,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:25,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:25,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663324138] [2024-06-14 11:48:25,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:25,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:25,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:25,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:25,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:25,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:25,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 242 transitions, 2639 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:25,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:25,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:25,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:25,535 INFO L124 PetriNetUnfolderBase]: 501/955 cut-off events. [2024-06-14 11:48:25,536 INFO L125 PetriNetUnfolderBase]: For 98670/98670 co-relation queries the response was YES. [2024-06-14 11:48:25,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7237 conditions, 955 events. 501/955 cut-off events. For 98670/98670 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5195 event pairs, 33 based on Foata normal form. 2/955 useless extension candidates. Maximal degree in co-relation 7112. Up to 812 conditions per place. [2024-06-14 11:48:25,544 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 224 selfloop transitions, 29 changer transitions 0/256 dead transitions. [2024-06-14 11:48:25,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 256 transitions, 3217 flow [2024-06-14 11:48:25,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:48:25,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 11:48:25,545 INFO L175 Difference]: Start difference. First operand has 264 places, 242 transitions, 2639 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:48:25,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 256 transitions, 3217 flow [2024-06-14 11:48:25,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 256 transitions, 3089 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 11:48:25,814 INFO L231 Difference]: Finished difference. Result has 263 places, 243 transitions, 2615 flow [2024-06-14 11:48:25,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2615, PETRI_PLACES=263, PETRI_TRANSITIONS=243} [2024-06-14 11:48:25,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 11:48:25,815 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 243 transitions, 2615 flow [2024-06-14 11:48:25,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:25,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:25,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:25,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 11:48:25,815 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)] === [2024-06-14 11:48:25,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:25,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1741641991, now seen corresponding path program 8 times [2024-06-14 11:48:25,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:25,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304427770] [2024-06-14 11:48:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:25,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:26,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:26,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:26,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304427770] [2024-06-14 11:48:26,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304427770] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:26,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:26,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:26,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927207420] [2024-06-14 11:48:26,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:26,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:26,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:26,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:26,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:27,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:27,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 243 transitions, 2615 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:27,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:27,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:27,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:27,496 INFO L124 PetriNetUnfolderBase]: 505/963 cut-off events. [2024-06-14 11:48:27,496 INFO L125 PetriNetUnfolderBase]: For 101442/101442 co-relation queries the response was YES. [2024-06-14 11:48:27,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7301 conditions, 963 events. 505/963 cut-off events. For 101442/101442 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5253 event pairs, 33 based on Foata normal form. 2/963 useless extension candidates. Maximal degree in co-relation 7175. Up to 826 conditions per place. [2024-06-14 11:48:27,504 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 27 changer transitions 0/258 dead transitions. [2024-06-14 11:48:27,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 258 transitions, 3211 flow [2024-06-14 11:48:27,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:27,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:27,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:48:27,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 11:48:27,506 INFO L175 Difference]: Start difference. First operand has 263 places, 243 transitions, 2615 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:48:27,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 258 transitions, 3211 flow [2024-06-14 11:48:27,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 258 transitions, 3115 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:27,741 INFO L231 Difference]: Finished difference. Result has 266 places, 245 transitions, 2638 flow [2024-06-14 11:48:27,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2521, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2638, PETRI_PLACES=266, PETRI_TRANSITIONS=245} [2024-06-14 11:48:27,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 235 predicate places. [2024-06-14 11:48:27,742 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 245 transitions, 2638 flow [2024-06-14 11:48:27,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:27,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:27,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:27,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 11:48:27,743 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)] === [2024-06-14 11:48:27,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2054738575, now seen corresponding path program 9 times [2024-06-14 11:48:27,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:27,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517475728] [2024-06-14 11:48:27,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:27,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:28,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:28,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:28,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517475728] [2024-06-14 11:48:28,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517475728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:28,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:28,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:28,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515013573] [2024-06-14 11:48:28,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:28,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:28,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:28,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:28,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:29,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:29,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 245 transitions, 2638 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:29,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:29,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:29,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:29,434 INFO L124 PetriNetUnfolderBase]: 509/971 cut-off events. [2024-06-14 11:48:29,434 INFO L125 PetriNetUnfolderBase]: For 103711/103711 co-relation queries the response was YES. [2024-06-14 11:48:29,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7362 conditions, 971 events. 509/971 cut-off events. For 103711/103711 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5329 event pairs, 35 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 7234. Up to 806 conditions per place. [2024-06-14 11:48:29,444 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 218 selfloop transitions, 38 changer transitions 0/259 dead transitions. [2024-06-14 11:48:29,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 259 transitions, 3226 flow [2024-06-14 11:48:29,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:48:29,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 11:48:29,445 INFO L175 Difference]: Start difference. First operand has 266 places, 245 transitions, 2638 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:48:29,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 259 transitions, 3226 flow [2024-06-14 11:48:29,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 259 transitions, 3137 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 11:48:29,744 INFO L231 Difference]: Finished difference. Result has 269 places, 246 transitions, 2675 flow [2024-06-14 11:48:29,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2549, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2675, PETRI_PLACES=269, PETRI_TRANSITIONS=246} [2024-06-14 11:48:29,744 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-14 11:48:29,745 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 246 transitions, 2675 flow [2024-06-14 11:48:29,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:29,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:29,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:29,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 11:48:29,745 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)] === [2024-06-14 11:48:29,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:29,746 INFO L85 PathProgramCache]: Analyzing trace with hash -427806397, now seen corresponding path program 10 times [2024-06-14 11:48:29,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:29,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808569369] [2024-06-14 11:48:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:29,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:30,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:30,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808569369] [2024-06-14 11:48:30,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808569369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:30,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:30,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:30,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976566739] [2024-06-14 11:48:30,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:30,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:30,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:30,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:30,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:31,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:31,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 246 transitions, 2675 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:31,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:31,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:31,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:31,366 INFO L124 PetriNetUnfolderBase]: 513/979 cut-off events. [2024-06-14 11:48:31,367 INFO L125 PetriNetUnfolderBase]: For 106174/106174 co-relation queries the response was YES. [2024-06-14 11:48:31,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7446 conditions, 979 events. 513/979 cut-off events. For 106174/106174 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5378 event pairs, 33 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 7317. Up to 837 conditions per place. [2024-06-14 11:48:31,376 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 232 selfloop transitions, 26 changer transitions 0/261 dead transitions. [2024-06-14 11:48:31,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 261 transitions, 3271 flow [2024-06-14 11:48:31,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:31,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-14 11:48:31,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2024-06-14 11:48:31,378 INFO L175 Difference]: Start difference. First operand has 269 places, 246 transitions, 2675 flow. Second operand 10 states and 121 transitions. [2024-06-14 11:48:31,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 261 transitions, 3271 flow [2024-06-14 11:48:31,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 261 transitions, 3155 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:31,671 INFO L231 Difference]: Finished difference. Result has 271 places, 247 transitions, 2663 flow [2024-06-14 11:48:31,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2559, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2663, PETRI_PLACES=271, PETRI_TRANSITIONS=247} [2024-06-14 11:48:31,672 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-14 11:48:31,672 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 247 transitions, 2663 flow [2024-06-14 11:48:31,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:31,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:31,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:31,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 11:48:31,673 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)] === [2024-06-14 11:48:31,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash -228350785, now seen corresponding path program 3 times [2024-06-14 11:48:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:31,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902979574] [2024-06-14 11:48:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:31,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:33,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:33,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902979574] [2024-06-14 11:48:33,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902979574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:33,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:33,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:33,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735175753] [2024-06-14 11:48:33,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:33,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:33,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:33,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:33,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:33,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:33,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 247 transitions, 2663 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:33,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:33,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:34,221 INFO L124 PetriNetUnfolderBase]: 516/984 cut-off events. [2024-06-14 11:48:34,221 INFO L125 PetriNetUnfolderBase]: For 103865/103865 co-relation queries the response was YES. [2024-06-14 11:48:34,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 984 events. 516/984 cut-off events. For 103865/103865 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5422 event pairs, 35 based on Foata normal form. 1/983 useless extension candidates. Maximal degree in co-relation 7308. Up to 759 conditions per place. [2024-06-14 11:48:34,231 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 59 changer transitions 0/267 dead transitions. [2024-06-14 11:48:34,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 267 transitions, 3310 flow [2024-06-14 11:48:34,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:34,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:48:34,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:48:34,232 INFO L175 Difference]: Start difference. First operand has 271 places, 247 transitions, 2663 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:48:34,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 267 transitions, 3310 flow [2024-06-14 11:48:34,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 267 transitions, 3216 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:34,551 INFO L231 Difference]: Finished difference. Result has 276 places, 253 transitions, 2823 flow [2024-06-14 11:48:34,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2569, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2823, PETRI_PLACES=276, PETRI_TRANSITIONS=253} [2024-06-14 11:48:34,551 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 245 predicate places. [2024-06-14 11:48:34,552 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 253 transitions, 2823 flow [2024-06-14 11:48:34,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:34,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:34,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:34,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 11:48:34,552 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)] === [2024-06-14 11:48:34,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:34,553 INFO L85 PathProgramCache]: Analyzing trace with hash 2046295263, now seen corresponding path program 4 times [2024-06-14 11:48:34,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:34,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960218975] [2024-06-14 11:48:34,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:34,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:36,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:36,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:36,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960218975] [2024-06-14 11:48:36,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960218975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:36,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:36,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:36,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310438588] [2024-06-14 11:48:36,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:36,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:36,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:36,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:36,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:36,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:36,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 253 transitions, 2823 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:36,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:36,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:36,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:37,123 INFO L124 PetriNetUnfolderBase]: 519/989 cut-off events. [2024-06-14 11:48:37,124 INFO L125 PetriNetUnfolderBase]: For 105657/105657 co-relation queries the response was YES. [2024-06-14 11:48:37,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7582 conditions, 989 events. 519/989 cut-off events. For 105657/105657 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5445 event pairs, 35 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 7449. Up to 837 conditions per place. [2024-06-14 11:48:37,135 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 229 selfloop transitions, 36 changer transitions 0/268 dead transitions. [2024-06-14 11:48:37,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 268 transitions, 3445 flow [2024-06-14 11:48:37,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:37,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:48:37,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:48:37,136 INFO L175 Difference]: Start difference. First operand has 276 places, 253 transitions, 2823 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:48:37,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 268 transitions, 3445 flow [2024-06-14 11:48:37,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 268 transitions, 3325 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-14 11:48:37,456 INFO L231 Difference]: Finished difference. Result has 281 places, 255 transitions, 2844 flow [2024-06-14 11:48:37,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2844, PETRI_PLACES=281, PETRI_TRANSITIONS=255} [2024-06-14 11:48:37,456 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-14 11:48:37,456 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 255 transitions, 2844 flow [2024-06-14 11:48:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:37,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:37,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:37,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 11:48:37,457 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)] === [2024-06-14 11:48:37,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:37,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1747219852, now seen corresponding path program 2 times [2024-06-14 11:48:37,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:37,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079139884] [2024-06-14 11:48:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:37,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:38,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:38,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079139884] [2024-06-14 11:48:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079139884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:38,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:38,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:38,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929423425] [2024-06-14 11:48:38,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:38,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:38,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:38,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 255 transitions, 2844 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:48:38,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:38,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:38,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:39,124 INFO L124 PetriNetUnfolderBase]: 539/1033 cut-off events. [2024-06-14 11:48:39,124 INFO L125 PetriNetUnfolderBase]: For 153023/153023 co-relation queries the response was YES. [2024-06-14 11:48:39,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7870 conditions, 1033 events. 539/1033 cut-off events. For 153023/153023 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5751 event pairs, 39 based on Foata normal form. 12/1043 useless extension candidates. Maximal degree in co-relation 7736. Up to 839 conditions per place. [2024-06-14 11:48:39,135 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 233 selfloop transitions, 30 changer transitions 7/273 dead transitions. [2024-06-14 11:48:39,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 273 transitions, 3542 flow [2024-06-14 11:48:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-14 11:48:39,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-14 11:48:39,136 INFO L175 Difference]: Start difference. First operand has 281 places, 255 transitions, 2844 flow. Second operand 10 states and 129 transitions. [2024-06-14 11:48:39,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 273 transitions, 3542 flow [2024-06-14 11:48:39,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 273 transitions, 3401 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:39,477 INFO L231 Difference]: Finished difference. Result has 283 places, 253 transitions, 2747 flow [2024-06-14 11:48:39,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2747, PETRI_PLACES=283, PETRI_TRANSITIONS=253} [2024-06-14 11:48:39,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 252 predicate places. [2024-06-14 11:48:39,477 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 253 transitions, 2747 flow [2024-06-14 11:48:39,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:48:39,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:39,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:39,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 11:48:39,478 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)] === [2024-06-14 11:48:39,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:39,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1747212133, now seen corresponding path program 5 times [2024-06-14 11:48:39,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:39,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370399977] [2024-06-14 11:48:39,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:39,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:39,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:41,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:41,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370399977] [2024-06-14 11:48:41,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370399977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:41,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:41,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:41,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501689296] [2024-06-14 11:48:41,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:41,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:41,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:41,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:41,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:41,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 253 transitions, 2747 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:41,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:41,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:41,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:41,769 INFO L124 PetriNetUnfolderBase]: 513/982 cut-off events. [2024-06-14 11:48:41,770 INFO L125 PetriNetUnfolderBase]: For 105134/105134 co-relation queries the response was YES. [2024-06-14 11:48:41,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7344 conditions, 982 events. 513/982 cut-off events. For 105134/105134 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5412 event pairs, 35 based on Foata normal form. 1/981 useless extension candidates. Maximal degree in co-relation 7209. Up to 833 conditions per place. [2024-06-14 11:48:41,779 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 228 selfloop transitions, 35 changer transitions 0/266 dead transitions. [2024-06-14 11:48:41,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 266 transitions, 3305 flow [2024-06-14 11:48:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:41,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:41,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:48:41,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:48:41,781 INFO L175 Difference]: Start difference. First operand has 283 places, 253 transitions, 2747 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:48:41,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 266 transitions, 3305 flow [2024-06-14 11:48:42,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 266 transitions, 3189 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:42,104 INFO L231 Difference]: Finished difference. Result has 286 places, 253 transitions, 2706 flow [2024-06-14 11:48:42,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2631, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2706, PETRI_PLACES=286, PETRI_TRANSITIONS=253} [2024-06-14 11:48:42,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-14 11:48:42,104 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 253 transitions, 2706 flow [2024-06-14 11:48:42,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:42,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:42,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:42,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 11:48:42,105 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)] === [2024-06-14 11:48:42,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:42,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1941159262, now seen corresponding path program 3 times [2024-06-14 11:48:42,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:42,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949950173] [2024-06-14 11:48:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:43,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:43,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949950173] [2024-06-14 11:48:43,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949950173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:43,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:43,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:43,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549482370] [2024-06-14 11:48:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:43,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:43,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:43,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:43,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:43,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:43,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 253 transitions, 2706 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:48:43,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:43,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:43,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:43,589 INFO L124 PetriNetUnfolderBase]: 517/990 cut-off events. [2024-06-14 11:48:43,590 INFO L125 PetriNetUnfolderBase]: For 111235/111235 co-relation queries the response was YES. [2024-06-14 11:48:43,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 990 events. 517/990 cut-off events. For 111235/111235 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5474 event pairs, 37 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 7225. Up to 802 conditions per place. [2024-06-14 11:48:43,599 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 45 changer transitions 0/267 dead transitions. [2024-06-14 11:48:43,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 267 transitions, 3288 flow [2024-06-14 11:48:43,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:43,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:43,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:48:43,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 11:48:43,601 INFO L175 Difference]: Start difference. First operand has 286 places, 253 transitions, 2706 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:48:43,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 267 transitions, 3288 flow [2024-06-14 11:48:43,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 267 transitions, 3188 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:48:43,958 INFO L231 Difference]: Finished difference. Result has 286 places, 254 transitions, 2724 flow [2024-06-14 11:48:43,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2724, PETRI_PLACES=286, PETRI_TRANSITIONS=254} [2024-06-14 11:48:43,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 255 predicate places. [2024-06-14 11:48:43,959 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 254 transitions, 2724 flow [2024-06-14 11:48:43,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:48:43,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:43,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:43,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 11:48:43,959 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)] === [2024-06-14 11:48:43,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:43,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1941151543, now seen corresponding path program 6 times [2024-06-14 11:48:43,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:43,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103608935] [2024-06-14 11:48:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:43,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:45,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:45,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103608935] [2024-06-14 11:48:45,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103608935] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:45,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:45,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328263849] [2024-06-14 11:48:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:45,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:45,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:45,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:45,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:46,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:46,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 254 transitions, 2724 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:46,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:46,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:46,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:46,655 INFO L124 PetriNetUnfolderBase]: 515/987 cut-off events. [2024-06-14 11:48:46,656 INFO L125 PetriNetUnfolderBase]: For 104649/104649 co-relation queries the response was YES. [2024-06-14 11:48:46,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 987 events. 515/987 cut-off events. For 104649/104649 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5452 event pairs, 35 based on Foata normal form. 1/986 useless extension candidates. Maximal degree in co-relation 7128. Up to 714 conditions per place. [2024-06-14 11:48:46,665 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 74 changer transitions 0/269 dead transitions. [2024-06-14 11:48:46,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 269 transitions, 3484 flow [2024-06-14 11:48:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:48:46,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:48:46,667 INFO L175 Difference]: Start difference. First operand has 286 places, 254 transitions, 2724 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:48:46,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 269 transitions, 3484 flow [2024-06-14 11:48:46,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 269 transitions, 3334 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:46,979 INFO L231 Difference]: Finished difference. Result has 289 places, 254 transitions, 2727 flow [2024-06-14 11:48:46,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2727, PETRI_PLACES=289, PETRI_TRANSITIONS=254} [2024-06-14 11:48:46,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-14 11:48:46,979 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 254 transitions, 2727 flow [2024-06-14 11:48:46,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:46,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:46,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:46,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 11:48:46,980 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)] === [2024-06-14 11:48:46,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1948309102, now seen corresponding path program 4 times [2024-06-14 11:48:46,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:46,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992457734] [2024-06-14 11:48:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:46,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:48,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992457734] [2024-06-14 11:48:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992457734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:48,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:48,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:48,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544308227] [2024-06-14 11:48:48,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:48,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:48,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:48,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:48,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:48,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:48,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 254 transitions, 2727 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:48,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:48,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:48,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:48,595 INFO L124 PetriNetUnfolderBase]: 522/1000 cut-off events. [2024-06-14 11:48:48,595 INFO L125 PetriNetUnfolderBase]: For 111042/111042 co-relation queries the response was YES. [2024-06-14 11:48:48,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7355 conditions, 1000 events. 522/1000 cut-off events. For 111042/111042 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 5565 event pairs, 37 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7217. Up to 826 conditions per place. [2024-06-14 11:48:48,606 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 44 changer transitions 0/271 dead transitions. [2024-06-14 11:48:48,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 271 transitions, 3343 flow [2024-06-14 11:48:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:48:48,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:48:48,608 INFO L175 Difference]: Start difference. First operand has 289 places, 254 transitions, 2727 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:48:48,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 271 transitions, 3343 flow [2024-06-14 11:48:48,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 271 transitions, 3158 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:48:48,937 INFO L231 Difference]: Finished difference. Result has 290 places, 257 transitions, 2689 flow [2024-06-14 11:48:48,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2546, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2689, PETRI_PLACES=290, PETRI_TRANSITIONS=257} [2024-06-14 11:48:48,938 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 259 predicate places. [2024-06-14 11:48:48,938 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 257 transitions, 2689 flow [2024-06-14 11:48:48,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:48,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:48,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:48,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 11:48:48,939 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)] === [2024-06-14 11:48:48,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:48,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1948577872, now seen corresponding path program 5 times [2024-06-14 11:48:48,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:48,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537521020] [2024-06-14 11:48:48,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:48,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:50,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537521020] [2024-06-14 11:48:50,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537521020] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:50,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:50,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:50,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202831372] [2024-06-14 11:48:50,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:50,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:50,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:50,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:50,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:50,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 257 transitions, 2689 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:50,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:50,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:50,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:50,545 INFO L124 PetriNetUnfolderBase]: 533/1021 cut-off events. [2024-06-14 11:48:50,546 INFO L125 PetriNetUnfolderBase]: For 122924/122924 co-relation queries the response was YES. [2024-06-14 11:48:50,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7670 conditions, 1021 events. 533/1021 cut-off events. For 122924/122924 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5712 event pairs, 38 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 7530. Up to 791 conditions per place. [2024-06-14 11:48:50,557 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 58 changer transitions 0/275 dead transitions. [2024-06-14 11:48:50,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 275 transitions, 3517 flow [2024-06-14 11:48:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:50,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:48:50,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:48:50,558 INFO L175 Difference]: Start difference. First operand has 290 places, 257 transitions, 2689 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:48:50,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 275 transitions, 3517 flow [2024-06-14 11:48:50,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 275 transitions, 3410 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:50,910 INFO L231 Difference]: Finished difference. Result has 293 places, 259 transitions, 2756 flow [2024-06-14 11:48:50,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2582, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2756, PETRI_PLACES=293, PETRI_TRANSITIONS=259} [2024-06-14 11:48:50,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 262 predicate places. [2024-06-14 11:48:50,911 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 259 transitions, 2756 flow [2024-06-14 11:48:50,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:50,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:50,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 11:48:50,912 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)] === [2024-06-14 11:48:50,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:50,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1948568572, now seen corresponding path program 6 times [2024-06-14 11:48:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:50,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979447661] [2024-06-14 11:48:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:50,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:51,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:51,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:51,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979447661] [2024-06-14 11:48:51,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979447661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:51,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:51,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:51,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135498227] [2024-06-14 11:48:51,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:51,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:51,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:51,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:51,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:52,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:52,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 259 transitions, 2756 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:48:52,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:52,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:52,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:52,510 INFO L124 PetriNetUnfolderBase]: 530/1016 cut-off events. [2024-06-14 11:48:52,510 INFO L125 PetriNetUnfolderBase]: For 115672/115672 co-relation queries the response was YES. [2024-06-14 11:48:52,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7472 conditions, 1016 events. 530/1016 cut-off events. For 115672/115672 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5687 event pairs, 39 based on Foata normal form. 2/1016 useless extension candidates. Maximal degree in co-relation 7331. Up to 821 conditions per place. [2024-06-14 11:48:52,524 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 219 selfloop transitions, 50 changer transitions 0/272 dead transitions. [2024-06-14 11:48:52,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 272 transitions, 3326 flow [2024-06-14 11:48:52,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:52,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:52,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-14 11:48:52,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-14 11:48:52,525 INFO L175 Difference]: Start difference. First operand has 293 places, 259 transitions, 2756 flow. Second operand 10 states and 126 transitions. [2024-06-14 11:48:52,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 272 transitions, 3326 flow [2024-06-14 11:48:52,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 272 transitions, 3207 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:52,859 INFO L231 Difference]: Finished difference. Result has 295 places, 259 transitions, 2743 flow [2024-06-14 11:48:52,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2743, PETRI_PLACES=295, PETRI_TRANSITIONS=259} [2024-06-14 11:48:52,859 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 264 predicate places. [2024-06-14 11:48:52,859 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 259 transitions, 2743 flow [2024-06-14 11:48:52,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:48:52,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:52,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:52,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 11:48:52,860 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)] === [2024-06-14 11:48:52,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1948301383, now seen corresponding path program 7 times [2024-06-14 11:48:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:52,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366655102] [2024-06-14 11:48:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:52,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:54,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:54,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:54,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366655102] [2024-06-14 11:48:54,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366655102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:54,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:54,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:48:54,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363496376] [2024-06-14 11:48:54,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:54,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:48:54,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:54,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:48:54,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:48:54,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:54,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 259 transitions, 2743 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:54,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:54,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:54,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:54,758 INFO L124 PetriNetUnfolderBase]: 528/1013 cut-off events. [2024-06-14 11:48:54,758 INFO L125 PetriNetUnfolderBase]: For 107618/107618 co-relation queries the response was YES. [2024-06-14 11:48:54,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7335 conditions, 1013 events. 528/1013 cut-off events. For 107618/107618 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 5673 event pairs, 39 based on Foata normal form. 1/1012 useless extension candidates. Maximal degree in co-relation 7194. Up to 815 conditions per place. [2024-06-14 11:48:54,770 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 57 changer transitions 0/272 dead transitions. [2024-06-14 11:48:54,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 272 transitions, 3313 flow [2024-06-14 11:48:54,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:48:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:48:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:48:54,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:48:54,772 INFO L175 Difference]: Start difference. First operand has 295 places, 259 transitions, 2743 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:48:54,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 272 transitions, 3313 flow [2024-06-14 11:48:55,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 272 transitions, 3157 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:48:55,093 INFO L231 Difference]: Finished difference. Result has 297 places, 259 transitions, 2706 flow [2024-06-14 11:48:55,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2587, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2706, PETRI_PLACES=297, PETRI_TRANSITIONS=259} [2024-06-14 11:48:55,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 266 predicate places. [2024-06-14 11:48:55,094 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 259 transitions, 2706 flow [2024-06-14 11:48:55,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:55,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:55,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:55,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 11:48:55,095 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)] === [2024-06-14 11:48:55,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1249595203, now seen corresponding path program 11 times [2024-06-14 11:48:55,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:55,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385128283] [2024-06-14 11:48:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:55,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:56,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:56,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:56,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385128283] [2024-06-14 11:48:56,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385128283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:56,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:56,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:56,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875522783] [2024-06-14 11:48:56,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:56,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:56,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:56,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:56,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:56,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 259 transitions, 2706 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:56,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:56,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:56,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:56,978 INFO L124 PetriNetUnfolderBase]: 532/1022 cut-off events. [2024-06-14 11:48:56,978 INFO L125 PetriNetUnfolderBase]: For 115417/115420 co-relation queries the response was YES. [2024-06-14 11:48:56,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1022 events. 532/1022 cut-off events. For 115417/115420 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 5728 event pairs, 45 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 7275. Up to 814 conditions per place. [2024-06-14 11:48:56,989 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 213 selfloop transitions, 55 changer transitions 0/271 dead transitions. [2024-06-14 11:48:56,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 271 transitions, 3316 flow [2024-06-14 11:48:56,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-14 11:48:56,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-14 11:48:56,990 INFO L175 Difference]: Start difference. First operand has 297 places, 259 transitions, 2706 flow. Second operand 10 states and 123 transitions. [2024-06-14 11:48:56,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 271 transitions, 3316 flow [2024-06-14 11:48:57,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 271 transitions, 3220 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:57,328 INFO L231 Difference]: Finished difference. Result has 299 places, 260 transitions, 2774 flow [2024-06-14 11:48:57,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2610, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2774, PETRI_PLACES=299, PETRI_TRANSITIONS=260} [2024-06-14 11:48:57,328 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-14 11:48:57,329 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 260 transitions, 2774 flow [2024-06-14 11:48:57,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:57,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:57,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:57,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 11:48:57,329 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)] === [2024-06-14 11:48:57,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:57,330 INFO L85 PathProgramCache]: Analyzing trace with hash -434259035, now seen corresponding path program 12 times [2024-06-14 11:48:57,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:57,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216038423] [2024-06-14 11:48:57,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:57,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:48:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:48:58,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:48:58,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216038423] [2024-06-14 11:48:58,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216038423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:48:58,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:48:58,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:48:58,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462551433] [2024-06-14 11:48:58,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:48:58,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:48:58,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:48:58,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:48:58,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:48:58,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:48:58,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 260 transitions, 2774 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:58,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:48:58,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:48:58,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:48:59,120 INFO L124 PetriNetUnfolderBase]: 536/1030 cut-off events. [2024-06-14 11:48:59,120 INFO L125 PetriNetUnfolderBase]: For 118944/118947 co-relation queries the response was YES. [2024-06-14 11:48:59,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7567 conditions, 1030 events. 536/1030 cut-off events. For 118944/118947 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 5789 event pairs, 43 based on Foata normal form. 2/1027 useless extension candidates. Maximal degree in co-relation 7424. Up to 865 conditions per place. [2024-06-14 11:48:59,132 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 231 selfloop transitions, 38 changer transitions 0/272 dead transitions. [2024-06-14 11:48:59,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 272 transitions, 3388 flow [2024-06-14 11:48:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:48:59,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:48:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 11:48:59,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-14 11:48:59,133 INFO L175 Difference]: Start difference. First operand has 299 places, 260 transitions, 2774 flow. Second operand 10 states and 124 transitions. [2024-06-14 11:48:59,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 272 transitions, 3388 flow [2024-06-14 11:48:59,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 272 transitions, 3234 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 11:48:59,507 INFO L231 Difference]: Finished difference. Result has 301 places, 261 transitions, 2752 flow [2024-06-14 11:48:59,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2752, PETRI_PLACES=301, PETRI_TRANSITIONS=261} [2024-06-14 11:48:59,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 11:48:59,508 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 261 transitions, 2752 flow [2024-06-14 11:48:59,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:48:59,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:48:59,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:48:59,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 11:48:59,509 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)] === [2024-06-14 11:48:59,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:48:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash -633560825, now seen corresponding path program 13 times [2024-06-14 11:48:59,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:48:59,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992783808] [2024-06-14 11:48:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:48:59,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:48:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:00,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:00,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:00,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992783808] [2024-06-14 11:49:00,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992783808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:00,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:00,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:00,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387209775] [2024-06-14 11:49:00,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:00,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:00,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:00,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:00,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:00,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:00,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 261 transitions, 2752 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:00,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:00,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:00,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:01,318 INFO L124 PetriNetUnfolderBase]: 540/1038 cut-off events. [2024-06-14 11:49:01,318 INFO L125 PetriNetUnfolderBase]: For 121104/121107 co-relation queries the response was YES. [2024-06-14 11:49:01,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 1038 events. 540/1038 cut-off events. For 121104/121107 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 5853 event pairs, 47 based on Foata normal form. 2/1035 useless extension candidates. Maximal degree in co-relation 7446. Up to 888 conditions per place. [2024-06-14 11:49:01,330 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 239 selfloop transitions, 32 changer transitions 0/274 dead transitions. [2024-06-14 11:49:01,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 274 transitions, 3385 flow [2024-06-14 11:49:01,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:01,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:01,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:49:01,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:49:01,331 INFO L175 Difference]: Start difference. First operand has 301 places, 261 transitions, 2752 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:49:01,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 274 transitions, 3385 flow [2024-06-14 11:49:01,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 274 transitions, 3261 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:01,681 INFO L231 Difference]: Finished difference. Result has 304 places, 263 transitions, 2768 flow [2024-06-14 11:49:01,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2768, PETRI_PLACES=304, PETRI_TRANSITIONS=263} [2024-06-14 11:49:01,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-14 11:49:01,682 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 263 transitions, 2768 flow [2024-06-14 11:49:01,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:01,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:01,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:01,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 11:49:01,682 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)] === [2024-06-14 11:49:01,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:01,683 INFO L85 PathProgramCache]: Analyzing trace with hash -633708695, now seen corresponding path program 14 times [2024-06-14 11:49:01,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:01,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673119033] [2024-06-14 11:49:01,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:01,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:02,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:02,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673119033] [2024-06-14 11:49:02,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673119033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:02,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:02,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825093448] [2024-06-14 11:49:02,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:02,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:02,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:02,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:02,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:03,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:03,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 263 transitions, 2768 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:03,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:03,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:03,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:03,414 INFO L124 PetriNetUnfolderBase]: 544/1046 cut-off events. [2024-06-14 11:49:03,414 INFO L125 PetriNetUnfolderBase]: For 123745/123748 co-relation queries the response was YES. [2024-06-14 11:49:03,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7640 conditions, 1046 events. 544/1046 cut-off events. For 123745/123748 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5910 event pairs, 43 based on Foata normal form. 2/1043 useless extension candidates. Maximal degree in co-relation 7494. Up to 891 conditions per place. [2024-06-14 11:49:03,425 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 242 selfloop transitions, 31 changer transitions 0/276 dead transitions. [2024-06-14 11:49:03,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 276 transitions, 3396 flow [2024-06-14 11:49:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:03,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:03,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:49:03,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:49:03,434 INFO L175 Difference]: Start difference. First operand has 304 places, 263 transitions, 2768 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:49:03,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 276 transitions, 3396 flow [2024-06-14 11:49:03,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 276 transitions, 3287 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-14 11:49:03,806 INFO L231 Difference]: Finished difference. Result has 307 places, 264 transitions, 2781 flow [2024-06-14 11:49:03,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=307, PETRI_TRANSITIONS=264} [2024-06-14 11:49:03,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-14 11:49:03,807 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 264 transitions, 2781 flow [2024-06-14 11:49:03,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:03,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:03,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:03,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 11:49:03,808 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)] === [2024-06-14 11:49:03,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:03,808 INFO L85 PathProgramCache]: Analyzing trace with hash -628198445, now seen corresponding path program 15 times [2024-06-14 11:49:03,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:03,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882111056] [2024-06-14 11:49:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:03,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:05,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:05,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882111056] [2024-06-14 11:49:05,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882111056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:05,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:05,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089724380] [2024-06-14 11:49:05,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:05,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:05,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:05,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:05,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:05,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 264 transitions, 2781 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:05,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:05,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:05,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:05,625 INFO L124 PetriNetUnfolderBase]: 541/1041 cut-off events. [2024-06-14 11:49:05,625 INFO L125 PetriNetUnfolderBase]: For 114046/114049 co-relation queries the response was YES. [2024-06-14 11:49:05,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7303 conditions, 1041 events. 541/1041 cut-off events. For 114046/114049 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 5887 event pairs, 46 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 7156. Up to 885 conditions per place. [2024-06-14 11:49:05,636 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 237 selfloop transitions, 35 changer transitions 0/275 dead transitions. [2024-06-14 11:49:05,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 275 transitions, 3351 flow [2024-06-14 11:49:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:05,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-14 11:49:05,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-14 11:49:05,637 INFO L175 Difference]: Start difference. First operand has 307 places, 264 transitions, 2781 flow. Second operand 10 states and 122 transitions. [2024-06-14 11:49:05,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 275 transitions, 3351 flow [2024-06-14 11:49:05,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 275 transitions, 3239 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:05,983 INFO L231 Difference]: Finished difference. Result has 309 places, 264 transitions, 2743 flow [2024-06-14 11:49:05,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2669, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2743, PETRI_PLACES=309, PETRI_TRANSITIONS=264} [2024-06-14 11:49:05,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-14 11:49:05,983 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 264 transitions, 2743 flow [2024-06-14 11:49:06,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:06,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:06,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:06,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 11:49:06,004 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)] === [2024-06-14 11:49:06,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1505390672, now seen corresponding path program 7 times [2024-06-14 11:49:06,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:06,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654315973] [2024-06-14 11:49:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:06,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:07,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:07,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:07,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654315973] [2024-06-14 11:49:07,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654315973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:07,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:07,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:07,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038350529] [2024-06-14 11:49:07,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:07,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:07,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:07,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:07,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:07,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:07,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 264 transitions, 2743 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:49:07,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:07,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:07,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:07,787 INFO L124 PetriNetUnfolderBase]: 552/1061 cut-off events. [2024-06-14 11:49:07,787 INFO L125 PetriNetUnfolderBase]: For 126428/126428 co-relation queries the response was YES. [2024-06-14 11:49:07,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7613 conditions, 1061 events. 552/1061 cut-off events. For 126428/126428 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6032 event pairs, 43 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7465. Up to 921 conditions per place. [2024-06-14 11:49:07,799 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 258 selfloop transitions, 19 changer transitions 0/280 dead transitions. [2024-06-14 11:49:07,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 280 transitions, 3633 flow [2024-06-14 11:49:07,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:07,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-14 11:49:07,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:49:07,800 INFO L175 Difference]: Start difference. First operand has 309 places, 264 transitions, 2743 flow. Second operand 10 states and 120 transitions. [2024-06-14 11:49:07,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 280 transitions, 3633 flow [2024-06-14 11:49:08,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 280 transitions, 3433 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-14 11:49:08,164 INFO L231 Difference]: Finished difference. Result has 309 places, 266 transitions, 2644 flow [2024-06-14 11:49:08,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2644, PETRI_PLACES=309, PETRI_TRANSITIONS=266} [2024-06-14 11:49:08,165 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-14 11:49:08,165 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 266 transitions, 2644 flow [2024-06-14 11:49:08,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:49:08,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:08,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:08,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 11:49:08,166 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)] === [2024-06-14 11:49:08,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:08,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1505381372, now seen corresponding path program 8 times [2024-06-14 11:49:08,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:08,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496401554] [2024-06-14 11:49:08,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:08,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:09,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:09,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:09,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496401554] [2024-06-14 11:49:09,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496401554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:09,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:09,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:09,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776746315] [2024-06-14 11:49:09,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:09,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:09,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:09,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:09,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:09,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 266 transitions, 2644 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:09,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:09,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:09,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:10,367 INFO L124 PetriNetUnfolderBase]: 562/1079 cut-off events. [2024-06-14 11:49:10,367 INFO L125 PetriNetUnfolderBase]: For 127663/127663 co-relation queries the response was YES. [2024-06-14 11:49:10,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 1079 events. 562/1079 cut-off events. For 127663/127663 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6112 event pairs, 45 based on Foata normal form. 2/1079 useless extension candidates. Maximal degree in co-relation 7390. Up to 973 conditions per place. [2024-06-14 11:49:10,379 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 20 changer transitions 0/285 dead transitions. [2024-06-14 11:49:10,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 285 transitions, 3368 flow [2024-06-14 11:49:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:10,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-14 11:49:10,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-14 11:49:10,380 INFO L175 Difference]: Start difference. First operand has 309 places, 266 transitions, 2644 flow. Second operand 11 states and 127 transitions. [2024-06-14 11:49:10,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 285 transitions, 3368 flow [2024-06-14 11:49:10,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 285 transitions, 3281 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-14 11:49:10,840 INFO L231 Difference]: Finished difference. Result has 314 places, 273 transitions, 2745 flow [2024-06-14 11:49:10,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2566, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2745, PETRI_PLACES=314, PETRI_TRANSITIONS=273} [2024-06-14 11:49:10,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-14 11:49:10,841 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 273 transitions, 2745 flow [2024-06-14 11:49:10,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:10,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:10,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:10,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 11:49:10,842 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)] === [2024-06-14 11:49:10,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:10,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1505114183, now seen corresponding path program 8 times [2024-06-14 11:49:10,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:10,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781467942] [2024-06-14 11:49:10,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:10,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:12,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:12,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781467942] [2024-06-14 11:49:12,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781467942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:12,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:12,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381817930] [2024-06-14 11:49:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:12,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:12,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:12,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:12,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 273 transitions, 2745 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:12,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:12,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:12,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:13,055 INFO L124 PetriNetUnfolderBase]: 560/1076 cut-off events. [2024-06-14 11:49:13,056 INFO L125 PetriNetUnfolderBase]: For 118184/118184 co-relation queries the response was YES. [2024-06-14 11:49:13,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7349 conditions, 1076 events. 560/1076 cut-off events. For 118184/118184 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6099 event pairs, 45 based on Foata normal form. 1/1075 useless extension candidates. Maximal degree in co-relation 7199. Up to 979 conditions per place. [2024-06-14 11:49:13,068 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 264 selfloop transitions, 18 changer transitions 0/285 dead transitions. [2024-06-14 11:49:13,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 285 transitions, 3341 flow [2024-06-14 11:49:13,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:13,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-14 11:49:13,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-14 11:49:13,069 INFO L175 Difference]: Start difference. First operand has 314 places, 273 transitions, 2745 flow. Second operand 11 states and 125 transitions. [2024-06-14 11:49:13,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 285 transitions, 3341 flow [2024-06-14 11:49:13,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 285 transitions, 3225 flow, removed 51 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:13,519 INFO L231 Difference]: Finished difference. Result has 321 places, 274 transitions, 2681 flow [2024-06-14 11:49:13,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2629, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2681, PETRI_PLACES=321, PETRI_TRANSITIONS=274} [2024-06-14 11:49:13,520 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 290 predicate places. [2024-06-14 11:49:13,520 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 274 transitions, 2681 flow [2024-06-14 11:49:13,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:13,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:13,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:13,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 11:49:13,521 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)] === [2024-06-14 11:49:13,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1505121902, now seen corresponding path program 9 times [2024-06-14 11:49:13,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:13,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246533712] [2024-06-14 11:49:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:13,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:14,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:14,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246533712] [2024-06-14 11:49:14,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246533712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:14,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:14,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:14,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074962014] [2024-06-14 11:49:14,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:14,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:14,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:14,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:14,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:14,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:14,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 274 transitions, 2681 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:49:14,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:14,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:14,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:15,328 INFO L124 PetriNetUnfolderBase]: 557/1071 cut-off events. [2024-06-14 11:49:15,329 INFO L125 PetriNetUnfolderBase]: For 113598/113598 co-relation queries the response was YES. [2024-06-14 11:49:15,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7034 conditions, 1071 events. 557/1071 cut-off events. For 113598/113598 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 6087 event pairs, 42 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 6881. Up to 948 conditions per place. [2024-06-14 11:49:15,345 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 257 selfloop transitions, 25 changer transitions 0/285 dead transitions. [2024-06-14 11:49:15,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 285 transitions, 3271 flow [2024-06-14 11:49:15,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:15,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:15,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-14 11:49:15,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-14 11:49:15,346 INFO L175 Difference]: Start difference. First operand has 321 places, 274 transitions, 2681 flow. Second operand 10 states and 118 transitions. [2024-06-14 11:49:15,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 285 transitions, 3271 flow [2024-06-14 11:49:15,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 285 transitions, 3187 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:15,739 INFO L231 Difference]: Finished difference. Result has 322 places, 274 transitions, 2654 flow [2024-06-14 11:49:15,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2654, PETRI_PLACES=322, PETRI_TRANSITIONS=274} [2024-06-14 11:49:15,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-14 11:49:15,739 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 274 transitions, 2654 flow [2024-06-14 11:49:15,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:49:15,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:15,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:15,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 11:49:15,740 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)] === [2024-06-14 11:49:15,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -434051273, now seen corresponding path program 9 times [2024-06-14 11:49:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:15,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967184745] [2024-06-14 11:49:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:15,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:15,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:17,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:17,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967184745] [2024-06-14 11:49:17,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967184745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:17,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:17,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:17,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068134665] [2024-06-14 11:49:17,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:17,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:17,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:17,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 274 transitions, 2654 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:17,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:17,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:17,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:18,016 INFO L124 PetriNetUnfolderBase]: 560/1077 cut-off events. [2024-06-14 11:49:18,017 INFO L125 PetriNetUnfolderBase]: For 109548/109551 co-relation queries the response was YES. [2024-06-14 11:49:18,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7071 conditions, 1077 events. 560/1077 cut-off events. For 109548/109551 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6145 event pairs, 48 based on Foata normal form. 1/1073 useless extension candidates. Maximal degree in co-relation 6917. Up to 885 conditions per place. [2024-06-14 11:49:18,029 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 52 changer transitions 0/290 dead transitions. [2024-06-14 11:49:18,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 290 transitions, 3325 flow [2024-06-14 11:49:18,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:18,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:49:18,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 11:49:18,030 INFO L175 Difference]: Start difference. First operand has 322 places, 274 transitions, 2654 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:49:18,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 290 transitions, 3325 flow [2024-06-14 11:49:18,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 290 transitions, 3269 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:18,414 INFO L231 Difference]: Finished difference. Result has 327 places, 279 transitions, 2813 flow [2024-06-14 11:49:18,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2598, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2813, PETRI_PLACES=327, PETRI_TRANSITIONS=279} [2024-06-14 11:49:18,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-14 11:49:18,415 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 279 transitions, 2813 flow [2024-06-14 11:49:18,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:18,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:18,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:18,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 11:49:18,415 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)] === [2024-06-14 11:49:18,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:18,416 INFO L85 PathProgramCache]: Analyzing trace with hash -195253272, now seen corresponding path program 10 times [2024-06-14 11:49:18,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:18,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467018709] [2024-06-14 11:49:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:18,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:18,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467018709] [2024-06-14 11:49:20,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467018709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:20,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:20,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:20,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332510099] [2024-06-14 11:49:20,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:20,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:20,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:20,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:20,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:20,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:20,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 279 transitions, 2813 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:20,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:20,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:20,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:20,876 INFO L124 PetriNetUnfolderBase]: 564/1084 cut-off events. [2024-06-14 11:49:20,876 INFO L125 PetriNetUnfolderBase]: For 116089/116089 co-relation queries the response was YES. [2024-06-14 11:49:20,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7252 conditions, 1084 events. 564/1084 cut-off events. For 116089/116089 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6167 event pairs, 40 based on Foata normal form. 2/1084 useless extension candidates. Maximal degree in co-relation 7094. Up to 915 conditions per place. [2024-06-14 11:49:20,889 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 264 selfloop transitions, 28 changer transitions 0/295 dead transitions. [2024-06-14 11:49:20,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 295 transitions, 3461 flow [2024-06-14 11:49:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:49:20,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:49:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 11:49:20,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 11:49:20,891 INFO L175 Difference]: Start difference. First operand has 327 places, 279 transitions, 2813 flow. Second operand 12 states and 139 transitions. [2024-06-14 11:49:20,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 295 transitions, 3461 flow [2024-06-14 11:49:21,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 295 transitions, 3343 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-14 11:49:21,281 INFO L231 Difference]: Finished difference. Result has 334 places, 280 transitions, 2787 flow [2024-06-14 11:49:21,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2787, PETRI_PLACES=334, PETRI_TRANSITIONS=280} [2024-06-14 11:49:21,281 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 11:49:21,281 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 280 transitions, 2787 flow [2024-06-14 11:49:21,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:21,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:21,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:21,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 11:49:21,282 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)] === [2024-06-14 11:49:21,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:21,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1637285718, now seen corresponding path program 11 times [2024-06-14 11:49:21,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:21,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626168271] [2024-06-14 11:49:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:21,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:22,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:22,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626168271] [2024-06-14 11:49:22,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626168271] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:22,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:22,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:22,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991507603] [2024-06-14 11:49:22,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:22,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:22,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:22,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:22,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:22,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:22,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 280 transitions, 2787 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:22,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:22,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:22,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:23,092 INFO L124 PetriNetUnfolderBase]: 568/1093 cut-off events. [2024-06-14 11:49:23,092 INFO L125 PetriNetUnfolderBase]: For 118386/118389 co-relation queries the response was YES. [2024-06-14 11:49:23,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7287 conditions, 1093 events. 568/1093 cut-off events. For 118386/118389 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6243 event pairs, 48 based on Foata normal form. 2/1090 useless extension candidates. Maximal degree in co-relation 7128. Up to 916 conditions per place. [2024-06-14 11:49:23,105 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 44 changer transitions 0/293 dead transitions. [2024-06-14 11:49:23,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 293 transitions, 3427 flow [2024-06-14 11:49:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:49:23,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:49:23,106 INFO L175 Difference]: Start difference. First operand has 334 places, 280 transitions, 2787 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:49:23,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 293 transitions, 3427 flow [2024-06-14 11:49:23,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 293 transitions, 3357 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:23,518 INFO L231 Difference]: Finished difference. Result has 336 places, 281 transitions, 2843 flow [2024-06-14 11:49:23,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2843, PETRI_PLACES=336, PETRI_TRANSITIONS=281} [2024-06-14 11:49:23,518 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 305 predicate places. [2024-06-14 11:49:23,518 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 281 transitions, 2843 flow [2024-06-14 11:49:23,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:23,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:23,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:23,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 11:49:23,519 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)] === [2024-06-14 11:49:23,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:23,519 INFO L85 PathProgramCache]: Analyzing trace with hash -81660353, now seen corresponding path program 10 times [2024-06-14 11:49:23,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:23,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355872968] [2024-06-14 11:49:23,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:23,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:24,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:24,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:24,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355872968] [2024-06-14 11:49:24,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355872968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:24,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:24,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:24,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337663019] [2024-06-14 11:49:24,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:24,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:24,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:24,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:24,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:25,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:25,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 281 transitions, 2843 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:25,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:25,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:25,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:25,497 INFO L124 PetriNetUnfolderBase]: 571/1098 cut-off events. [2024-06-14 11:49:25,497 INFO L125 PetriNetUnfolderBase]: For 114615/114618 co-relation queries the response was YES. [2024-06-14 11:49:25,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7361 conditions, 1098 events. 571/1098 cut-off events. For 114615/114618 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 6299 event pairs, 48 based on Foata normal form. 1/1094 useless extension candidates. Maximal degree in co-relation 7201. Up to 797 conditions per place. [2024-06-14 11:49:25,510 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 93 changer transitions 0/300 dead transitions. [2024-06-14 11:49:25,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 300 transitions, 3645 flow [2024-06-14 11:49:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:49:25,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 11:49:25,511 INFO L175 Difference]: Start difference. First operand has 336 places, 281 transitions, 2843 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:49:25,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 300 transitions, 3645 flow [2024-06-14 11:49:25,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 300 transitions, 3501 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-14 11:49:25,893 INFO L231 Difference]: Finished difference. Result has 339 places, 288 transitions, 3093 flow [2024-06-14 11:49:25,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3093, PETRI_PLACES=339, PETRI_TRANSITIONS=288} [2024-06-14 11:49:25,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 308 predicate places. [2024-06-14 11:49:25,894 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 288 transitions, 3093 flow [2024-06-14 11:49:25,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:25,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:25,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:25,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 11:49:25,895 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)] === [2024-06-14 11:49:25,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:25,895 INFO L85 PathProgramCache]: Analyzing trace with hash -628192493, now seen corresponding path program 11 times [2024-06-14 11:49:25,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:25,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800509040] [2024-06-14 11:49:25,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:25,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:27,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:27,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800509040] [2024-06-14 11:49:27,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800509040] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:27,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:27,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:27,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668495495] [2024-06-14 11:49:27,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:27,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:27,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:27,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:27,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:27,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:27,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 288 transitions, 3093 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:27,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:27,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:28,339 INFO L124 PetriNetUnfolderBase]: 574/1103 cut-off events. [2024-06-14 11:49:28,339 INFO L125 PetriNetUnfolderBase]: For 116849/116852 co-relation queries the response was YES. [2024-06-14 11:49:28,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7503 conditions, 1103 events. 574/1103 cut-off events. For 116849/116852 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6314 event pairs, 48 based on Foata normal form. 1/1099 useless extension candidates. Maximal degree in co-relation 7340. Up to 938 conditions per place. [2024-06-14 11:49:28,349 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 41 changer transitions 0/301 dead transitions. [2024-06-14 11:49:28,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 301 transitions, 3771 flow [2024-06-14 11:49:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:28,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:49:28,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:49:28,350 INFO L175 Difference]: Start difference. First operand has 339 places, 288 transitions, 3093 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:49:28,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 301 transitions, 3771 flow [2024-06-14 11:49:28,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 301 transitions, 3513 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-14 11:49:28,785 INFO L231 Difference]: Finished difference. Result has 343 places, 290 transitions, 2982 flow [2024-06-14 11:49:28,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2835, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2982, PETRI_PLACES=343, PETRI_TRANSITIONS=290} [2024-06-14 11:49:28,786 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 11:49:28,786 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 290 transitions, 2982 flow [2024-06-14 11:49:28,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:28,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:28,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:28,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 11:49:28,786 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)] === [2024-06-14 11:49:28,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:28,787 INFO L85 PathProgramCache]: Analyzing trace with hash -627990683, now seen corresponding path program 12 times [2024-06-14 11:49:28,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:28,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620983325] [2024-06-14 11:49:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:28,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:28,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:31,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:31,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620983325] [2024-06-14 11:49:31,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620983325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:31,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:31,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:31,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851798713] [2024-06-14 11:49:31,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:31,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:31,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:31,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:31,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:31,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:31,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 290 transitions, 2982 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:31,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:31,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:31,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:32,165 INFO L124 PetriNetUnfolderBase]: 572/1100 cut-off events. [2024-06-14 11:49:32,166 INFO L125 PetriNetUnfolderBase]: For 110985/110988 co-relation queries the response was YES. [2024-06-14 11:49:32,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7217 conditions, 1100 events. 572/1100 cut-off events. For 110985/110988 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6318 event pairs, 48 based on Foata normal form. 1/1096 useless extension candidates. Maximal degree in co-relation 7054. Up to 935 conditions per place. [2024-06-14 11:49:32,180 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 256 selfloop transitions, 42 changer transitions 0/301 dead transitions. [2024-06-14 11:49:32,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 301 transitions, 3604 flow [2024-06-14 11:49:32,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:32,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:32,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:49:32,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 11:49:32,181 INFO L175 Difference]: Start difference. First operand has 343 places, 290 transitions, 2982 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:49:32,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 301 transitions, 3604 flow [2024-06-14 11:49:32,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 301 transitions, 3411 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:32,635 INFO L231 Difference]: Finished difference. Result has 345 places, 290 transitions, 2878 flow [2024-06-14 11:49:32,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2789, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2878, PETRI_PLACES=345, PETRI_TRANSITIONS=290} [2024-06-14 11:49:32,636 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 11:49:32,636 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 290 transitions, 2878 flow [2024-06-14 11:49:32,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:32,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:32,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:32,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 11:49:32,637 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)] === [2024-06-14 11:49:32,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:32,637 INFO L85 PathProgramCache]: Analyzing trace with hash -81862163, now seen corresponding path program 13 times [2024-06-14 11:49:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740372566] [2024-06-14 11:49:32,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:32,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:32,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:34,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740372566] [2024-06-14 11:49:34,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740372566] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:34,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:34,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:34,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486092439] [2024-06-14 11:49:34,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:34,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:34,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:34,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:34,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:35,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:35,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 290 transitions, 2878 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:35,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:35,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:35,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:35,599 INFO L124 PetriNetUnfolderBase]: 570/1097 cut-off events. [2024-06-14 11:49:35,599 INFO L125 PetriNetUnfolderBase]: For 105332/105335 co-relation queries the response was YES. [2024-06-14 11:49:35,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6980 conditions, 1097 events. 570/1097 cut-off events. For 105332/105335 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6288 event pairs, 48 based on Foata normal form. 1/1093 useless extension candidates. Maximal degree in co-relation 6816. Up to 796 conditions per place. [2024-06-14 11:49:35,612 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 204 selfloop transitions, 95 changer transitions 0/302 dead transitions. [2024-06-14 11:49:35,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 302 transitions, 3514 flow [2024-06-14 11:49:35,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:49:35,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:49:35,613 INFO L175 Difference]: Start difference. First operand has 345 places, 290 transitions, 2878 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:49:35,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 302 transitions, 3514 flow [2024-06-14 11:49:36,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 302 transitions, 3337 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-14 11:49:36,043 INFO L231 Difference]: Finished difference. Result has 345 places, 291 transitions, 2920 flow [2024-06-14 11:49:36,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2920, PETRI_PLACES=345, PETRI_TRANSITIONS=291} [2024-06-14 11:49:36,044 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 11:49:36,044 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 291 transitions, 2920 flow [2024-06-14 11:49:36,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:36,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:36,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:36,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 11:49:36,045 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)] === [2024-06-14 11:49:36,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:36,045 INFO L85 PathProgramCache]: Analyzing trace with hash -627982964, now seen corresponding path program 12 times [2024-06-14 11:49:36,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:36,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252334177] [2024-06-14 11:49:36,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:36,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:37,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:37,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:37,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252334177] [2024-06-14 11:49:37,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252334177] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:37,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:37,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:37,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833668358] [2024-06-14 11:49:37,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:37,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:37,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:37,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:37,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:37,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:37,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 291 transitions, 2920 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:49:37,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:37,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:37,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:37,847 INFO L124 PetriNetUnfolderBase]: 590/1141 cut-off events. [2024-06-14 11:49:37,848 INFO L125 PetriNetUnfolderBase]: For 178423/178426 co-relation queries the response was YES. [2024-06-14 11:49:37,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7372 conditions, 1141 events. 590/1141 cut-off events. For 178423/178426 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6585 event pairs, 52 based on Foata normal form. 12/1148 useless extension candidates. Maximal degree in co-relation 7207. Up to 934 conditions per place. [2024-06-14 11:49:37,863 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 262 selfloop transitions, 35 changer transitions 7/307 dead transitions. [2024-06-14 11:49:37,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 307 transitions, 3690 flow [2024-06-14 11:49:37,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:37,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:37,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 128 transitions. [2024-06-14 11:49:37,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 11:49:37,864 INFO L175 Difference]: Start difference. First operand has 345 places, 291 transitions, 2920 flow. Second operand 10 states and 128 transitions. [2024-06-14 11:49:37,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 307 transitions, 3690 flow [2024-06-14 11:49:38,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 307 transitions, 3464 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 11:49:38,339 INFO L231 Difference]: Finished difference. Result has 346 places, 289 transitions, 2783 flow [2024-06-14 11:49:38,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2783, PETRI_PLACES=346, PETRI_TRANSITIONS=289} [2024-06-14 11:49:38,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-14 11:49:38,339 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 289 transitions, 2783 flow [2024-06-14 11:49:38,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:49:38,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:38,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:38,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 11:49:38,340 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)] === [2024-06-14 11:49:38,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash -426893714, now seen corresponding path program 13 times [2024-06-14 11:49:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017170335] [2024-06-14 11:49:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:38,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:39,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:39,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017170335] [2024-06-14 11:49:39,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017170335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:39,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:39,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:39,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893840340] [2024-06-14 11:49:39,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:39,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:39,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:39,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:39,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:39,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:39,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 289 transitions, 2783 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:39,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:39,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:39,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:40,225 INFO L124 PetriNetUnfolderBase]: 573/1106 cut-off events. [2024-06-14 11:49:40,225 INFO L125 PetriNetUnfolderBase]: For 116401/116404 co-relation queries the response was YES. [2024-06-14 11:49:40,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7038 conditions, 1106 events. 573/1106 cut-off events. For 116401/116404 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 6378 event pairs, 48 based on Foata normal form. 2/1103 useless extension candidates. Maximal degree in co-relation 6872. Up to 932 conditions per place. [2024-06-14 11:49:40,239 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 257 selfloop transitions, 44 changer transitions 0/304 dead transitions. [2024-06-14 11:49:40,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 304 transitions, 3469 flow [2024-06-14 11:49:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:40,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:40,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:49:40,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:49:40,240 INFO L175 Difference]: Start difference. First operand has 346 places, 289 transitions, 2783 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:49:40,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 304 transitions, 3469 flow [2024-06-14 11:49:40,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 304 transitions, 3367 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:40,655 INFO L231 Difference]: Finished difference. Result has 350 places, 292 transitions, 2838 flow [2024-06-14 11:49:40,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2681, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2838, PETRI_PLACES=350, PETRI_TRANSITIONS=292} [2024-06-14 11:49:40,655 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-14 11:49:40,655 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 292 transitions, 2838 flow [2024-06-14 11:49:40,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:40,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:40,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:40,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 11:49:40,656 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)] === [2024-06-14 11:49:40,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash 2141985390, now seen corresponding path program 14 times [2024-06-14 11:49:40,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:40,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546991730] [2024-06-14 11:49:40,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:40,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:42,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:42,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546991730] [2024-06-14 11:49:42,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546991730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:42,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:42,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:42,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701015944] [2024-06-14 11:49:42,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:42,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:42,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:42,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:42,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:42,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 292 transitions, 2838 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:42,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:42,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:42,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:42,753 INFO L124 PetriNetUnfolderBase]: 577/1114 cut-off events. [2024-06-14 11:49:42,753 INFO L125 PetriNetUnfolderBase]: For 118421/118424 co-relation queries the response was YES. [2024-06-14 11:49:42,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7115 conditions, 1114 events. 577/1114 cut-off events. For 118421/118424 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6452 event pairs, 50 based on Foata normal form. 2/1111 useless extension candidates. Maximal degree in co-relation 6947. Up to 876 conditions per place. [2024-06-14 11:49:42,767 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 69 changer transitions 0/305 dead transitions. [2024-06-14 11:49:42,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 305 transitions, 3508 flow [2024-06-14 11:49:42,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:49:42,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:49:42,768 INFO L175 Difference]: Start difference. First operand has 350 places, 292 transitions, 2838 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:49:42,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 305 transitions, 3508 flow [2024-06-14 11:49:43,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 305 transitions, 3389 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:43,197 INFO L231 Difference]: Finished difference. Result has 353 places, 293 transitions, 2901 flow [2024-06-14 11:49:43,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2719, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2901, PETRI_PLACES=353, PETRI_TRANSITIONS=293} [2024-06-14 11:49:43,198 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-14 11:49:43,198 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 293 transitions, 2901 flow [2024-06-14 11:49:43,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:43,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:43,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:43,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 11:49:43,199 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)] === [2024-06-14 11:49:43,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:43,200 INFO L85 PathProgramCache]: Analyzing trace with hash -74234024, now seen corresponding path program 15 times [2024-06-14 11:49:43,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:43,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753120517] [2024-06-14 11:49:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:43,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:45,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:45,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:45,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753120517] [2024-06-14 11:49:45,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753120517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:45,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:45,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:45,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371842586] [2024-06-14 11:49:45,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:45,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:45,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:45,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:45,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:45,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:45,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 293 transitions, 2901 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:45,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:45,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:45,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:45,898 INFO L124 PetriNetUnfolderBase]: 588/1135 cut-off events. [2024-06-14 11:49:45,899 INFO L125 PetriNetUnfolderBase]: For 135348/135351 co-relation queries the response was YES. [2024-06-14 11:49:45,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7593 conditions, 1135 events. 588/1135 cut-off events. For 135348/135351 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 6615 event pairs, 49 based on Foata normal form. 2/1132 useless extension candidates. Maximal degree in co-relation 7424. Up to 866 conditions per place. [2024-06-14 11:49:45,913 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 233 selfloop transitions, 73 changer transitions 0/309 dead transitions. [2024-06-14 11:49:45,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 309 transitions, 3861 flow [2024-06-14 11:49:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:45,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:45,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 11:49:45,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-14 11:49:45,914 INFO L175 Difference]: Start difference. First operand has 353 places, 293 transitions, 2901 flow. Second operand 11 states and 140 transitions. [2024-06-14 11:49:45,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 309 transitions, 3861 flow [2024-06-14 11:49:46,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 309 transitions, 3676 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-14 11:49:46,348 INFO L231 Difference]: Finished difference. Result has 354 places, 295 transitions, 2948 flow [2024-06-14 11:49:46,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2716, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2948, PETRI_PLACES=354, PETRI_TRANSITIONS=295} [2024-06-14 11:49:46,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-14 11:49:46,349 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 295 transitions, 2948 flow [2024-06-14 11:49:46,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:46,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:46,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:46,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 11:49:46,351 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)] === [2024-06-14 11:49:46,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:46,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2145572596, now seen corresponding path program 16 times [2024-06-14 11:49:46,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:46,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607997561] [2024-06-14 11:49:46,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:46,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:48,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:48,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607997561] [2024-06-14 11:49:48,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607997561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:48,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:48,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:48,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30480066] [2024-06-14 11:49:48,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:48,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:48,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:48,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:48,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:48,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:48,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 295 transitions, 2948 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:48,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:48,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:48,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:48,600 INFO L124 PetriNetUnfolderBase]: 595/1146 cut-off events. [2024-06-14 11:49:48,600 INFO L125 PetriNetUnfolderBase]: For 137934/137937 co-relation queries the response was YES. [2024-06-14 11:49:48,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7676 conditions, 1146 events. 595/1146 cut-off events. For 137934/137937 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6705 event pairs, 55 based on Foata normal form. 2/1141 useless extension candidates. Maximal degree in co-relation 7507. Up to 877 conditions per place. [2024-06-14 11:49:48,614 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 77 changer transitions 0/310 dead transitions. [2024-06-14 11:49:48,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 310 transitions, 3654 flow [2024-06-14 11:49:48,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:48,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:48,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:49:48,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 11:49:48,616 INFO L175 Difference]: Start difference. First operand has 354 places, 295 transitions, 2948 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:49:48,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 310 transitions, 3654 flow [2024-06-14 11:49:49,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 310 transitions, 3505 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-14 11:49:49,054 INFO L231 Difference]: Finished difference. Result has 358 places, 298 transitions, 3023 flow [2024-06-14 11:49:49,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2807, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3023, PETRI_PLACES=358, PETRI_TRANSITIONS=298} [2024-06-14 11:49:49,054 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-14 11:49:49,054 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 298 transitions, 3023 flow [2024-06-14 11:49:49,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:49,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:49,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:49,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 11:49:49,055 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)] === [2024-06-14 11:49:49,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:49,056 INFO L85 PathProgramCache]: Analyzing trace with hash -426901433, now seen corresponding path program 14 times [2024-06-14 11:49:49,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:49,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431063941] [2024-06-14 11:49:49,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:49,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:50,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:50,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:50,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431063941] [2024-06-14 11:49:50,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431063941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:50,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:50,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:50,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650421048] [2024-06-14 11:49:50,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:50,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:50,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:50,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 298 transitions, 3023 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:50,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:50,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:50,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:51,058 INFO L124 PetriNetUnfolderBase]: 593/1145 cut-off events. [2024-06-14 11:49:51,059 INFO L125 PetriNetUnfolderBase]: For 124790/124793 co-relation queries the response was YES. [2024-06-14 11:49:51,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7540 conditions, 1145 events. 593/1145 cut-off events. For 124790/124793 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6700 event pairs, 51 based on Foata normal form. 1/1141 useless extension candidates. Maximal degree in co-relation 7371. Up to 956 conditions per place. [2024-06-14 11:49:51,073 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 253 selfloop transitions, 53 changer transitions 0/309 dead transitions. [2024-06-14 11:49:51,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 309 transitions, 3661 flow [2024-06-14 11:49:51,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:51,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:51,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:49:51,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:49:51,074 INFO L175 Difference]: Start difference. First operand has 358 places, 298 transitions, 3023 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:49:51,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 309 transitions, 3661 flow [2024-06-14 11:49:51,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 309 transitions, 3437 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:51,658 INFO L231 Difference]: Finished difference. Result has 361 places, 298 transitions, 2910 flow [2024-06-14 11:49:51,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2799, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2910, PETRI_PLACES=361, PETRI_TRANSITIONS=298} [2024-06-14 11:49:51,659 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 11:49:51,659 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 298 transitions, 2910 flow [2024-06-14 11:49:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:51,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:51,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:51,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 11:49:51,660 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)] === [2024-06-14 11:49:51,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash -426634244, now seen corresponding path program 17 times [2024-06-14 11:49:51,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:51,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89812929] [2024-06-14 11:49:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:53,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:53,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:53,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89812929] [2024-06-14 11:49:53,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89812929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:53,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:53,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:49:53,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936804065] [2024-06-14 11:49:53,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:53,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:49:53,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:53,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:49:53,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:49:53,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:53,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 298 transitions, 2910 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:49:53,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:53,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:53,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:53,624 INFO L124 PetriNetUnfolderBase]: 597/1153 cut-off events. [2024-06-14 11:49:53,625 INFO L125 PetriNetUnfolderBase]: For 133827/133830 co-relation queries the response was YES. [2024-06-14 11:49:53,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1153 events. 597/1153 cut-off events. For 133827/133830 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6747 event pairs, 53 based on Foata normal form. 2/1150 useless extension candidates. Maximal degree in co-relation 7337. Up to 961 conditions per place. [2024-06-14 11:49:53,637 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 258 selfloop transitions, 49 changer transitions 0/310 dead transitions. [2024-06-14 11:49:53,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 310 transitions, 3592 flow [2024-06-14 11:49:53,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:49:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:49:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-14 11:49:53,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-14 11:49:53,639 INFO L175 Difference]: Start difference. First operand has 361 places, 298 transitions, 2910 flow. Second operand 10 states and 127 transitions. [2024-06-14 11:49:53,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 310 transitions, 3592 flow [2024-06-14 11:49:54,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 310 transitions, 3472 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:49:54,086 INFO L231 Difference]: Finished difference. Result has 361 places, 299 transitions, 2938 flow [2024-06-14 11:49:54,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2938, PETRI_PLACES=361, PETRI_TRANSITIONS=299} [2024-06-14 11:49:54,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 11:49:54,087 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 299 transitions, 2938 flow [2024-06-14 11:49:54,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:49:54,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:54,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:54,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 11:49:54,087 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)] === [2024-06-14 11:49:54,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:54,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1256952805, now seen corresponding path program 15 times [2024-06-14 11:49:54,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:54,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792462559] [2024-06-14 11:49:54,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:54,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792462559] [2024-06-14 11:49:55,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792462559] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:55,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:55,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:55,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66748431] [2024-06-14 11:49:55,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:55,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:55,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:55,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 299 transitions, 2938 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:55,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:55,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:55,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:56,180 INFO L124 PetriNetUnfolderBase]: 595/1150 cut-off events. [2024-06-14 11:49:56,180 INFO L125 PetriNetUnfolderBase]: For 121204/121207 co-relation queries the response was YES. [2024-06-14 11:49:56,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 1150 events. 595/1150 cut-off events. For 121204/121207 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6732 event pairs, 53 based on Foata normal form. 1/1146 useless extension candidates. Maximal degree in co-relation 7203. Up to 703 conditions per place. [2024-06-14 11:49:56,195 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 136 changer transitions 0/311 dead transitions. [2024-06-14 11:49:56,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 311 transitions, 3826 flow [2024-06-14 11:49:56,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:56,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:56,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 11:49:56,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-14 11:49:56,196 INFO L175 Difference]: Start difference. First operand has 361 places, 299 transitions, 2938 flow. Second operand 11 states and 145 transitions. [2024-06-14 11:49:56,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 311 transitions, 3826 flow [2024-06-14 11:49:56,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 311 transitions, 3652 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-14 11:49:56,616 INFO L231 Difference]: Finished difference. Result has 364 places, 299 transitions, 3041 flow [2024-06-14 11:49:56,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3041, PETRI_PLACES=364, PETRI_TRANSITIONS=299} [2024-06-14 11:49:56,616 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-14 11:49:56,617 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 299 transitions, 3041 flow [2024-06-14 11:49:56,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:56,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:56,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:56,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 11:49:56,617 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)] === [2024-06-14 11:49:56,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash -426624944, now seen corresponding path program 18 times [2024-06-14 11:49:56,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:56,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085600124] [2024-06-14 11:49:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:56,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:49:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:49:57,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:49:57,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085600124] [2024-06-14 11:49:57,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085600124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:49:57,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:49:57,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:49:57,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289866973] [2024-06-14 11:49:57,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:49:57,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:49:57,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:49:57,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:49:57,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:49:58,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:49:58,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 299 transitions, 3041 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:58,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:49:58,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:49:58,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:49:58,514 INFO L124 PetriNetUnfolderBase]: 592/1145 cut-off events. [2024-06-14 11:49:58,514 INFO L125 PetriNetUnfolderBase]: For 114812/114815 co-relation queries the response was YES. [2024-06-14 11:49:58,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7154 conditions, 1145 events. 592/1145 cut-off events. For 114812/114815 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6728 event pairs, 50 based on Foata normal form. 2/1142 useless extension candidates. Maximal degree in co-relation 6982. Up to 927 conditions per place. [2024-06-14 11:49:58,528 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 254 selfloop transitions, 55 changer transitions 0/312 dead transitions. [2024-06-14 11:49:58,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 312 transitions, 3689 flow [2024-06-14 11:49:58,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:49:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:49:58,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:49:58,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:49:58,530 INFO L175 Difference]: Start difference. First operand has 364 places, 299 transitions, 3041 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:49:58,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 312 transitions, 3689 flow [2024-06-14 11:49:58,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 312 transitions, 3408 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 11:49:58,965 INFO L231 Difference]: Finished difference. Result has 365 places, 299 transitions, 2874 flow [2024-06-14 11:49:58,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2874, PETRI_PLACES=365, PETRI_TRANSITIONS=299} [2024-06-14 11:49:58,965 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-14 11:49:58,965 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 299 transitions, 2874 flow [2024-06-14 11:49:58,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:49:58,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:49:58,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:49:58,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 11:49:58,966 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)] === [2024-06-14 11:49:58,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:49:58,966 INFO L85 PathProgramCache]: Analyzing trace with hash -434253083, now seen corresponding path program 16 times [2024-06-14 11:49:58,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:49:58,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859630642] [2024-06-14 11:49:58,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:49:58,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:49:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:01,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:01,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859630642] [2024-06-14 11:50:01,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859630642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:01,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:01,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748517863] [2024-06-14 11:50:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:01,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:01,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:01,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:01,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:01,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:01,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 299 transitions, 2874 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:01,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:01,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:01,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:01,866 INFO L124 PetriNetUnfolderBase]: 590/1142 cut-off events. [2024-06-14 11:50:01,866 INFO L125 PetriNetUnfolderBase]: For 101007/101010 co-relation queries the response was YES. [2024-06-14 11:50:01,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 1142 events. 590/1142 cut-off events. For 101007/101010 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6702 event pairs, 52 based on Foata normal form. 1/1138 useless extension candidates. Maximal degree in co-relation 6685. Up to 953 conditions per place. [2024-06-14 11:50:01,881 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 255 selfloop transitions, 52 changer transitions 0/310 dead transitions. [2024-06-14 11:50:01,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 310 transitions, 3514 flow [2024-06-14 11:50:01,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:50:01,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:50:01,882 INFO L175 Difference]: Start difference. First operand has 365 places, 299 transitions, 2874 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:50:01,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 310 transitions, 3514 flow [2024-06-14 11:50:02,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 310 transitions, 3244 flow, removed 43 selfloop flow, removed 12 redundant places. [2024-06-14 11:50:02,305 INFO L231 Difference]: Finished difference. Result has 364 places, 299 transitions, 2713 flow [2024-06-14 11:50:02,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2604, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2713, PETRI_PLACES=364, PETRI_TRANSITIONS=299} [2024-06-14 11:50:02,306 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-14 11:50:02,306 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 299 transitions, 2713 flow [2024-06-14 11:50:02,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:02,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:02,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:02,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 11:50:02,306 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)] === [2024-06-14 11:50:02,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:02,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1256960524, now seen corresponding path program 19 times [2024-06-14 11:50:02,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:02,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365334527] [2024-06-14 11:50:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:03,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:03,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365334527] [2024-06-14 11:50:03,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365334527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:03,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:03,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 11:50:03,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110000982] [2024-06-14 11:50:03,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:03,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 11:50:03,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:03,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 11:50:03,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 11:50:03,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:03,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 299 transitions, 2713 flow. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:50:03,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:03,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:03,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:04,046 INFO L124 PetriNetUnfolderBase]: 587/1137 cut-off events. [2024-06-14 11:50:04,046 INFO L125 PetriNetUnfolderBase]: For 93599/93602 co-relation queries the response was YES. [2024-06-14 11:50:04,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6232 conditions, 1137 events. 587/1137 cut-off events. For 93599/93602 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6653 event pairs, 51 based on Foata normal form. 2/1134 useless extension candidates. Maximal degree in co-relation 6062. Up to 833 conditions per place. [2024-06-14 11:50:04,060 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 90 changer transitions 0/310 dead transitions. [2024-06-14 11:50:04,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 310 transitions, 3353 flow [2024-06-14 11:50:04,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 11:50:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 11:50:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 11:50:04,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-14 11:50:04,061 INFO L175 Difference]: Start difference. First operand has 364 places, 299 transitions, 2713 flow. Second operand 10 states and 131 transitions. [2024-06-14 11:50:04,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 310 transitions, 3353 flow [2024-06-14 11:50:04,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 310 transitions, 3184 flow, removed 18 selfloop flow, removed 11 redundant places. [2024-06-14 11:50:04,400 INFO L231 Difference]: Finished difference. Result has 363 places, 299 transitions, 2730 flow [2024-06-14 11:50:04,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2730, PETRI_PLACES=363, PETRI_TRANSITIONS=299} [2024-06-14 11:50:04,400 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-14 11:50:04,401 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 299 transitions, 2730 flow [2024-06-14 11:50:04,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 11 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) [2024-06-14 11:50:04,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:04,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:04,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 11:50:04,401 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)] === [2024-06-14 11:50:04,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:04,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1591530507, now seen corresponding path program 1 times [2024-06-14 11:50:04,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:04,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309360249] [2024-06-14 11:50:04,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:04,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:05,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:05,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:05,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309360249] [2024-06-14 11:50:05,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309360249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:05,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:05,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:05,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893894362] [2024-06-14 11:50:05,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:05,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:05,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:05,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:05,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:05,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:05,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 299 transitions, 2730 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:05,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:05,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:05,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:06,011 INFO L124 PetriNetUnfolderBase]: 599/1164 cut-off events. [2024-06-14 11:50:06,012 INFO L125 PetriNetUnfolderBase]: For 139394/139394 co-relation queries the response was YES. [2024-06-14 11:50:06,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6408 conditions, 1164 events. 599/1164 cut-off events. For 139394/139394 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6851 event pairs, 37 based on Foata normal form. 8/1170 useless extension candidates. Maximal degree in co-relation 6237. Up to 980 conditions per place. [2024-06-14 11:50:06,025 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 289 selfloop transitions, 15 changer transitions 18/325 dead transitions. [2024-06-14 11:50:06,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 325 transitions, 3494 flow [2024-06-14 11:50:06,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:06,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:06,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:50:06,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:50:06,027 INFO L175 Difference]: Start difference. First operand has 363 places, 299 transitions, 2730 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:50:06,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 325 transitions, 3494 flow [2024-06-14 11:50:06,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 325 transitions, 3302 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:06,344 INFO L231 Difference]: Finished difference. Result has 365 places, 295 transitions, 2552 flow [2024-06-14 11:50:06,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2538, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2552, PETRI_PLACES=365, PETRI_TRANSITIONS=295} [2024-06-14 11:50:06,345 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 334 predicate places. [2024-06-14 11:50:06,345 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 295 transitions, 2552 flow [2024-06-14 11:50:06,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:06,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:06,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:06,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 11:50:06,346 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)] === [2024-06-14 11:50:06,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1234576431, now seen corresponding path program 2 times [2024-06-14 11:50:06,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:06,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162233246] [2024-06-14 11:50:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:06,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:07,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162233246] [2024-06-14 11:50:07,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162233246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:07,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:07,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:07,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399362301] [2024-06-14 11:50:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:07,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:07,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:07,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:07,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 295 transitions, 2552 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:07,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:07,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:07,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:08,267 INFO L124 PetriNetUnfolderBase]: 571/1106 cut-off events. [2024-06-14 11:50:08,268 INFO L125 PetriNetUnfolderBase]: For 93371/93371 co-relation queries the response was YES. [2024-06-14 11:50:08,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 1106 events. 571/1106 cut-off events. For 93371/93371 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6444 event pairs, 35 based on Foata normal form. 2/1106 useless extension candidates. Maximal degree in co-relation 5886. Up to 973 conditions per place. [2024-06-14 11:50:08,279 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 288 selfloop transitions, 22 changer transitions 0/313 dead transitions. [2024-06-14 11:50:08,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 313 transitions, 3256 flow [2024-06-14 11:50:08,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:50:08,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 11:50:08,280 INFO L175 Difference]: Start difference. First operand has 365 places, 295 transitions, 2552 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:50:08,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 313 transitions, 3256 flow [2024-06-14 11:50:08,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 313 transitions, 3218 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-14 11:50:08,630 INFO L231 Difference]: Finished difference. Result has 359 places, 296 transitions, 2602 flow [2024-06-14 11:50:08,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2514, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2602, PETRI_PLACES=359, PETRI_TRANSITIONS=296} [2024-06-14 11:50:08,631 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-14 11:50:08,631 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 296 transitions, 2602 flow [2024-06-14 11:50:08,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:08,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:08,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:08,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 11:50:08,632 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)] === [2024-06-14 11:50:08,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1234754061, now seen corresponding path program 3 times [2024-06-14 11:50:08,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:08,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036399046] [2024-06-14 11:50:08,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:08,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:09,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:09,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:09,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036399046] [2024-06-14 11:50:09,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036399046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:09,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:09,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:09,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405579003] [2024-06-14 11:50:09,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:09,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:09,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:10,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:10,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 296 transitions, 2602 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:10,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:10,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:10,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:10,477 INFO L124 PetriNetUnfolderBase]: 575/1114 cut-off events. [2024-06-14 11:50:10,478 INFO L125 PetriNetUnfolderBase]: For 89581/89581 co-relation queries the response was YES. [2024-06-14 11:50:10,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6143 conditions, 1114 events. 575/1114 cut-off events. For 89581/89581 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 6514 event pairs, 35 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 5974. Up to 967 conditions per place. [2024-06-14 11:50:10,491 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 289 selfloop transitions, 23 changer transitions 0/315 dead transitions. [2024-06-14 11:50:10,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 315 transitions, 3314 flow [2024-06-14 11:50:10,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:50:10,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 11:50:10,493 INFO L175 Difference]: Start difference. First operand has 359 places, 296 transitions, 2602 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:50:10,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 315 transitions, 3314 flow [2024-06-14 11:50:10,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 315 transitions, 3236 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:10,851 INFO L231 Difference]: Finished difference. Result has 361 places, 297 transitions, 2616 flow [2024-06-14 11:50:10,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2616, PETRI_PLACES=361, PETRI_TRANSITIONS=297} [2024-06-14 11:50:10,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-14 11:50:10,852 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 297 transitions, 2616 flow [2024-06-14 11:50:10,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:10,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:10,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:10,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 11:50:10,853 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)] === [2024-06-14 11:50:10,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:10,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1239338031, now seen corresponding path program 4 times [2024-06-14 11:50:10,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:10,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946872647] [2024-06-14 11:50:10,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:12,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:12,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:12,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946872647] [2024-06-14 11:50:12,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946872647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:12,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:12,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:12,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678898262] [2024-06-14 11:50:12,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:12,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:12,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:12,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:12,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:12,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:12,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 297 transitions, 2616 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:12,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:12,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:12,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:12,616 INFO L124 PetriNetUnfolderBase]: 579/1122 cut-off events. [2024-06-14 11:50:12,616 INFO L125 PetriNetUnfolderBase]: For 89673/89673 co-relation queries the response was YES. [2024-06-14 11:50:12,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6196 conditions, 1122 events. 579/1122 cut-off events. For 89673/89673 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6567 event pairs, 35 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 6026. Up to 979 conditions per place. [2024-06-14 11:50:12,629 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 294 selfloop transitions, 20 changer transitions 0/317 dead transitions. [2024-06-14 11:50:12,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 317 transitions, 3336 flow [2024-06-14 11:50:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:50:12,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 11:50:12,630 INFO L175 Difference]: Start difference. First operand has 361 places, 297 transitions, 2616 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:50:12,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 317 transitions, 3336 flow [2024-06-14 11:50:13,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 317 transitions, 3254 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:13,071 INFO L231 Difference]: Finished difference. Result has 363 places, 298 transitions, 2622 flow [2024-06-14 11:50:13,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2534, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2622, PETRI_PLACES=363, PETRI_TRANSITIONS=298} [2024-06-14 11:50:13,072 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 332 predicate places. [2024-06-14 11:50:13,072 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 298 transitions, 2622 flow [2024-06-14 11:50:13,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:13,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:13,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:13,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 11:50:13,073 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)] === [2024-06-14 11:50:13,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1234569487, now seen corresponding path program 1 times [2024-06-14 11:50:13,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:13,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601052407] [2024-06-14 11:50:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:13,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:14,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:14,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:14,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601052407] [2024-06-14 11:50:14,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601052407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:14,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:14,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:50:14,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091091840] [2024-06-14 11:50:14,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:14,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:50:14,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:14,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:50:14,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:50:15,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:15,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 298 transitions, 2622 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:15,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:15,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:15,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:15,657 INFO L124 PetriNetUnfolderBase]: 591/1150 cut-off events. [2024-06-14 11:50:15,657 INFO L125 PetriNetUnfolderBase]: For 136116/136116 co-relation queries the response was YES. [2024-06-14 11:50:15,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6311 conditions, 1150 events. 591/1150 cut-off events. For 136116/136116 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 6774 event pairs, 45 based on Foata normal form. 8/1156 useless extension candidates. Maximal degree in co-relation 6140. Up to 988 conditions per place. [2024-06-14 11:50:15,671 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 287 selfloop transitions, 20 changer transitions 9/319 dead transitions. [2024-06-14 11:50:15,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 319 transitions, 3366 flow [2024-06-14 11:50:15,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:50:15,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:50:15,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:50:15,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:50:15,672 INFO L175 Difference]: Start difference. First operand has 363 places, 298 transitions, 2622 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:50:15,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 319 transitions, 3366 flow [2024-06-14 11:50:16,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 319 transitions, 3288 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:16,036 INFO L231 Difference]: Finished difference. Result has 366 places, 295 transitions, 2563 flow [2024-06-14 11:50:16,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2563, PETRI_PLACES=366, PETRI_TRANSITIONS=295} [2024-06-14 11:50:16,037 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 335 predicate places. [2024-06-14 11:50:16,037 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 295 transitions, 2563 flow [2024-06-14 11:50:16,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:16,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:16,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:16,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 11:50:16,038 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)] === [2024-06-14 11:50:16,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:16,038 INFO L85 PathProgramCache]: Analyzing trace with hash -2113558037, now seen corresponding path program 5 times [2024-06-14 11:50:16,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:16,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870870846] [2024-06-14 11:50:16,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:16,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:17,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:17,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:17,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870870846] [2024-06-14 11:50:17,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870870846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:17,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:17,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:17,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160218881] [2024-06-14 11:50:17,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:17,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:17,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:17,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:17,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:17,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:17,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 295 transitions, 2563 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:17,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:17,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:17,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:17,939 INFO L124 PetriNetUnfolderBase]: 586/1143 cut-off events. [2024-06-14 11:50:17,940 INFO L125 PetriNetUnfolderBase]: For 136921/136921 co-relation queries the response was YES. [2024-06-14 11:50:17,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6208 conditions, 1143 events. 586/1143 cut-off events. For 136921/136921 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 6715 event pairs, 41 based on Foata normal form. 8/1149 useless extension candidates. Maximal degree in co-relation 6036. Up to 983 conditions per place. [2024-06-14 11:50:17,953 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 282 selfloop transitions, 19 changer transitions 12/316 dead transitions. [2024-06-14 11:50:17,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 316 transitions, 3301 flow [2024-06-14 11:50:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 11:50:17,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:50:17,954 INFO L175 Difference]: Start difference. First operand has 366 places, 295 transitions, 2563 flow. Second operand 11 states and 132 transitions. [2024-06-14 11:50:17,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 316 transitions, 3301 flow [2024-06-14 11:50:18,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 316 transitions, 3165 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 11:50:18,317 INFO L231 Difference]: Finished difference. Result has 362 places, 291 transitions, 2433 flow [2024-06-14 11:50:18,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2433, PETRI_PLACES=362, PETRI_TRANSITIONS=291} [2024-06-14 11:50:18,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-14 11:50:18,318 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 291 transitions, 2433 flow [2024-06-14 11:50:18,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:18,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:18,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:18,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 11:50:18,319 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)] === [2024-06-14 11:50:18,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash -2113673357, now seen corresponding path program 6 times [2024-06-14 11:50:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162759387] [2024-06-14 11:50:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:18,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:19,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:19,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162759387] [2024-06-14 11:50:19,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162759387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:19,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:19,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:19,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618913697] [2024-06-14 11:50:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:19,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:19,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:19,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:19,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 291 transitions, 2433 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:19,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:19,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:19,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:20,219 INFO L124 PetriNetUnfolderBase]: 577/1128 cut-off events. [2024-06-14 11:50:20,220 INFO L125 PetriNetUnfolderBase]: For 136809/136809 co-relation queries the response was YES. [2024-06-14 11:50:20,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5965 conditions, 1128 events. 577/1128 cut-off events. For 136809/136809 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6592 event pairs, 37 based on Foata normal form. 8/1134 useless extension candidates. Maximal degree in co-relation 5795. Up to 963 conditions per place. [2024-06-14 11:50:20,232 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 279 selfloop transitions, 16 changer transitions 15/313 dead transitions. [2024-06-14 11:50:20,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 313 transitions, 3165 flow [2024-06-14 11:50:20,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:20,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 11:50:20,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:50:20,233 INFO L175 Difference]: Start difference. First operand has 362 places, 291 transitions, 2433 flow. Second operand 11 states and 132 transitions. [2024-06-14 11:50:20,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 313 transitions, 3165 flow [2024-06-14 11:50:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 313 transitions, 3121 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:50:20,596 INFO L231 Difference]: Finished difference. Result has 358 places, 286 transitions, 2386 flow [2024-06-14 11:50:20,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2389, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2386, PETRI_PLACES=358, PETRI_TRANSITIONS=286} [2024-06-14 11:50:20,597 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-14 11:50:20,597 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 286 transitions, 2386 flow [2024-06-14 11:50:20,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:20,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:20,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:20,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 11:50:20,597 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)] === [2024-06-14 11:50:20,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:20,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1942677977, now seen corresponding path program 7 times [2024-06-14 11:50:20,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:20,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953463995] [2024-06-14 11:50:20,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:20,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:21,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:21,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:21,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953463995] [2024-06-14 11:50:21,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953463995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:21,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:21,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:21,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843702504] [2024-06-14 11:50:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:21,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:21,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:21,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:21,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:21,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:21,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 286 transitions, 2386 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:21,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:21,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:21,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:22,338 INFO L124 PetriNetUnfolderBase]: 555/1078 cut-off events. [2024-06-14 11:50:22,338 INFO L125 PetriNetUnfolderBase]: For 93328/93328 co-relation queries the response was YES. [2024-06-14 11:50:22,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5775 conditions, 1078 events. 555/1078 cut-off events. For 93328/93328 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6258 event pairs, 37 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 5607. Up to 936 conditions per place. [2024-06-14 11:50:22,350 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 268 selfloop transitions, 33 changer transitions 0/304 dead transitions. [2024-06-14 11:50:22,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 304 transitions, 3078 flow [2024-06-14 11:50:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:22,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:50:22,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:50:22,352 INFO L175 Difference]: Start difference. First operand has 358 places, 286 transitions, 2386 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:50:22,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 304 transitions, 3078 flow [2024-06-14 11:50:22,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 304 transitions, 3040 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:22,652 INFO L231 Difference]: Finished difference. Result has 353 places, 287 transitions, 2464 flow [2024-06-14 11:50:22,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2464, PETRI_PLACES=353, PETRI_TRANSITIONS=287} [2024-06-14 11:50:22,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 322 predicate places. [2024-06-14 11:50:22,653 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 287 transitions, 2464 flow [2024-06-14 11:50:22,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:22,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:22,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:22,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 11:50:22,654 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)] === [2024-06-14 11:50:22,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:22,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1936421867, now seen corresponding path program 8 times [2024-06-14 11:50:22,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:22,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132176683] [2024-06-14 11:50:22,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:22,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:23,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:23,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:23,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132176683] [2024-06-14 11:50:23,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132176683] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:23,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:23,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:23,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375735931] [2024-06-14 11:50:23,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:23,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:23,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:23,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:23,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:24,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:24,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 287 transitions, 2464 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:24,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:24,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:24,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:24,487 INFO L124 PetriNetUnfolderBase]: 571/1114 cut-off events. [2024-06-14 11:50:24,487 INFO L125 PetriNetUnfolderBase]: For 147189/147189 co-relation queries the response was YES. [2024-06-14 11:50:24,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 1114 events. 571/1114 cut-off events. For 147189/147189 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6512 event pairs, 43 based on Foata normal form. 10/1122 useless extension candidates. Maximal degree in co-relation 5901. Up to 940 conditions per place. [2024-06-14 11:50:24,501 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 270 selfloop transitions, 29 changer transitions 6/308 dead transitions. [2024-06-14 11:50:24,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 308 transitions, 3226 flow [2024-06-14 11:50:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:24,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:50:24,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:50:24,502 INFO L175 Difference]: Start difference. First operand has 353 places, 287 transitions, 2464 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:50:24,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 308 transitions, 3226 flow [2024-06-14 11:50:24,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 308 transitions, 3120 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:24,892 INFO L231 Difference]: Finished difference. Result has 355 places, 285 transitions, 2445 flow [2024-06-14 11:50:24,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2445, PETRI_PLACES=355, PETRI_TRANSITIONS=285} [2024-06-14 11:50:24,892 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-14 11:50:24,892 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 285 transitions, 2445 flow [2024-06-14 11:50:24,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:24,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:24,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:24,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 11:50:24,893 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)] === [2024-06-14 11:50:24,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:24,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1780656883, now seen corresponding path program 9 times [2024-06-14 11:50:24,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:24,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639288402] [2024-06-14 11:50:24,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:24,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:26,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639288402] [2024-06-14 11:50:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639288402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:26,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:26,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:26,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642386018] [2024-06-14 11:50:26,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:26,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:26,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:26,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:26,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:26,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:26,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 285 transitions, 2445 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:26,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:26,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:26,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:27,142 INFO L124 PetriNetUnfolderBase]: 558/1085 cut-off events. [2024-06-14 11:50:27,142 INFO L125 PetriNetUnfolderBase]: For 93077/93077 co-relation queries the response was YES. [2024-06-14 11:50:27,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5904 conditions, 1085 events. 558/1085 cut-off events. For 93077/93077 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6302 event pairs, 37 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 5737. Up to 928 conditions per place. [2024-06-14 11:50:27,156 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 269 selfloop transitions, 32 changer transitions 0/304 dead transitions. [2024-06-14 11:50:27,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 304 transitions, 3143 flow [2024-06-14 11:50:27,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:50:27,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:50:27,157 INFO L175 Difference]: Start difference. First operand has 355 places, 285 transitions, 2445 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:50:27,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 304 transitions, 3143 flow [2024-06-14 11:50:27,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 304 transitions, 3037 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-14 11:50:27,483 INFO L231 Difference]: Finished difference. Result has 355 places, 286 transitions, 2457 flow [2024-06-14 11:50:27,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2339, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2457, PETRI_PLACES=355, PETRI_TRANSITIONS=286} [2024-06-14 11:50:27,483 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-14 11:50:27,483 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 286 transitions, 2457 flow [2024-06-14 11:50:27,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:27,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:27,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:27,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 11:50:27,484 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)] === [2024-06-14 11:50:27,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1942671033, now seen corresponding path program 2 times [2024-06-14 11:50:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:27,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112498959] [2024-06-14 11:50:27,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:27,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:29,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:29,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:29,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112498959] [2024-06-14 11:50:29,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112498959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:29,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:29,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:50:29,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911292014] [2024-06-14 11:50:29,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:29,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:50:29,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:29,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:50:29,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:50:29,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:29,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 286 transitions, 2457 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:29,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:29,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:29,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:29,758 INFO L124 PetriNetUnfolderBase]: 570/1113 cut-off events. [2024-06-14 11:50:29,758 INFO L125 PetriNetUnfolderBase]: For 139337/139337 co-relation queries the response was YES. [2024-06-14 11:50:29,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6008 conditions, 1113 events. 570/1113 cut-off events. For 139337/139337 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 6513 event pairs, 43 based on Foata normal form. 8/1119 useless extension candidates. Maximal degree in co-relation 5841. Up to 956 conditions per place. [2024-06-14 11:50:29,770 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 271 selfloop transitions, 24 changer transitions 9/307 dead transitions. [2024-06-14 11:50:29,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 307 transitions, 3173 flow [2024-06-14 11:50:29,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:50:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:50:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-14 11:50:29,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:50:29,771 INFO L175 Difference]: Start difference. First operand has 355 places, 286 transitions, 2457 flow. Second operand 12 states and 144 transitions. [2024-06-14 11:50:29,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 307 transitions, 3173 flow [2024-06-14 11:50:30,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 307 transitions, 3065 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:30,069 INFO L231 Difference]: Finished difference. Result has 358 places, 283 transitions, 2376 flow [2024-06-14 11:50:30,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2376, PETRI_PLACES=358, PETRI_TRANSITIONS=283} [2024-06-14 11:50:30,069 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 327 predicate places. [2024-06-14 11:50:30,069 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 283 transitions, 2376 flow [2024-06-14 11:50:30,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:30,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:30,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:30,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 11:50:30,070 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)] === [2024-06-14 11:50:30,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:30,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1936414923, now seen corresponding path program 3 times [2024-06-14 11:50:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655552120] [2024-06-14 11:50:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:31,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:31,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655552120] [2024-06-14 11:50:31,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655552120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:31,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:31,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:50:31,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773037873] [2024-06-14 11:50:31,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:31,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:50:31,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:31,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:50:31,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:50:31,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:31,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 283 transitions, 2376 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:31,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:31,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:31,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:32,084 INFO L124 PetriNetUnfolderBase]: 565/1110 cut-off events. [2024-06-14 11:50:32,086 INFO L125 PetriNetUnfolderBase]: For 140471/140471 co-relation queries the response was YES. [2024-06-14 11:50:32,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5873 conditions, 1110 events. 565/1110 cut-off events. For 140471/140471 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 6494 event pairs, 45 based on Foata normal form. 8/1116 useless extension candidates. Maximal degree in co-relation 5705. Up to 939 conditions per place. [2024-06-14 11:50:32,095 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 267 selfloop transitions, 21 changer transitions 13/304 dead transitions. [2024-06-14 11:50:32,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 304 transitions, 3086 flow [2024-06-14 11:50:32,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:50:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:50:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:50:32,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 11:50:32,097 INFO L175 Difference]: Start difference. First operand has 358 places, 283 transitions, 2376 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:50:32,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 304 transitions, 3086 flow [2024-06-14 11:50:32,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 304 transitions, 3034 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:50:32,424 INFO L231 Difference]: Finished difference. Result has 356 places, 277 transitions, 2322 flow [2024-06-14 11:50:32,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2324, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2322, PETRI_PLACES=356, PETRI_TRANSITIONS=277} [2024-06-14 11:50:32,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-14 11:50:32,424 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 277 transitions, 2322 flow [2024-06-14 11:50:32,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:32,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:32,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:32,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 11:50:32,425 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)] === [2024-06-14 11:50:32,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:32,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1936175913, now seen corresponding path program 4 times [2024-06-14 11:50:32,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:32,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240002990] [2024-06-14 11:50:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:32,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:34,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:34,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240002990] [2024-06-14 11:50:34,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240002990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:34,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:34,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:50:34,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49906128] [2024-06-14 11:50:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:34,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:50:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:50:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:50:34,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:34,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 277 transitions, 2322 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:34,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:34,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:34,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:34,822 INFO L124 PetriNetUnfolderBase]: 549/1080 cut-off events. [2024-06-14 11:50:34,822 INFO L125 PetriNetUnfolderBase]: For 120113/120113 co-relation queries the response was YES. [2024-06-14 11:50:34,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 1080 events. 549/1080 cut-off events. For 120113/120113 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 6278 event pairs, 39 based on Foata normal form. 6/1084 useless extension candidates. Maximal degree in co-relation 5557. Up to 926 conditions per place. [2024-06-14 11:50:34,835 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 265 selfloop transitions, 19 changer transitions 11/298 dead transitions. [2024-06-14 11:50:34,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 298 transitions, 3006 flow [2024-06-14 11:50:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:50:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:50:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:50:34,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:50:34,836 INFO L175 Difference]: Start difference. First operand has 356 places, 277 transitions, 2322 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:50:34,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 298 transitions, 3006 flow [2024-06-14 11:50:35,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 298 transitions, 2954 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:50:35,208 INFO L231 Difference]: Finished difference. Result has 350 places, 273 transitions, 2278 flow [2024-06-14 11:50:35,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2278, PETRI_PLACES=350, PETRI_TRANSITIONS=273} [2024-06-14 11:50:35,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-14 11:50:35,208 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 273 transitions, 2278 flow [2024-06-14 11:50:35,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:35,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:35,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:35,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 11:50:35,209 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)] === [2024-06-14 11:50:35,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:35,209 INFO L85 PathProgramCache]: Analyzing trace with hash 46150369, now seen corresponding path program 10 times [2024-06-14 11:50:35,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:35,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050255867] [2024-06-14 11:50:35,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:35,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:36,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:36,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050255867] [2024-06-14 11:50:36,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050255867] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:36,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:36,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:36,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370836928] [2024-06-14 11:50:36,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:36,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:36,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:36,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:36,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:36,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:36,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 273 transitions, 2278 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:36,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:36,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:36,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:37,141 INFO L124 PetriNetUnfolderBase]: 549/1076 cut-off events. [2024-06-14 11:50:37,142 INFO L125 PetriNetUnfolderBase]: For 144319/144319 co-relation queries the response was YES. [2024-06-14 11:50:37,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 1076 events. 549/1076 cut-off events. For 144319/144319 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6249 event pairs, 45 based on Foata normal form. 10/1084 useless extension candidates. Maximal degree in co-relation 5601. Up to 827 conditions per place. [2024-06-14 11:50:37,159 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 55 changer transitions 6/291 dead transitions. [2024-06-14 11:50:37,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 291 transitions, 2996 flow [2024-06-14 11:50:37,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 11:50:37,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 11:50:37,161 INFO L175 Difference]: Start difference. First operand has 350 places, 273 transitions, 2278 flow. Second operand 11 states and 144 transitions. [2024-06-14 11:50:37,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 291 transitions, 2996 flow [2024-06-14 11:50:37,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 291 transitions, 2930 flow, removed 14 selfloop flow, removed 12 redundant places. [2024-06-14 11:50:37,538 INFO L231 Difference]: Finished difference. Result has 343 places, 271 transitions, 2363 flow [2024-06-14 11:50:37,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=343, PETRI_TRANSITIONS=271} [2024-06-14 11:50:37,538 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 11:50:37,538 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 271 transitions, 2363 flow [2024-06-14 11:50:37,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:37,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:37,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:37,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 11:50:37,539 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)] === [2024-06-14 11:50:37,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:37,539 INFO L85 PathProgramCache]: Analyzing trace with hash 39894259, now seen corresponding path program 11 times [2024-06-14 11:50:37,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:37,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866561896] [2024-06-14 11:50:37,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:37,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:37,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:38,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:38,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:38,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866561896] [2024-06-14 11:50:38,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866561896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:38,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:38,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522027426] [2024-06-14 11:50:38,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:38,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:38,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:38,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:38,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:39,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:39,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 271 transitions, 2363 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:39,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:39,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:39,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:39,601 INFO L124 PetriNetUnfolderBase]: 536/1047 cut-off events. [2024-06-14 11:50:39,601 INFO L125 PetriNetUnfolderBase]: For 86133/86133 co-relation queries the response was YES. [2024-06-14 11:50:39,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5688 conditions, 1047 events. 536/1047 cut-off events. For 86133/86133 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6044 event pairs, 43 based on Foata normal form. 2/1047 useless extension candidates. Maximal degree in co-relation 5527. Up to 873 conditions per place. [2024-06-14 11:50:39,614 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 239 selfloop transitions, 44 changer transitions 0/286 dead transitions. [2024-06-14 11:50:39,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 286 transitions, 3011 flow [2024-06-14 11:50:39,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:39,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:39,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:50:39,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:50:39,615 INFO L175 Difference]: Start difference. First operand has 343 places, 271 transitions, 2363 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:50:39,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 286 transitions, 3011 flow [2024-06-14 11:50:40,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 286 transitions, 2831 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-14 11:50:40,038 INFO L231 Difference]: Finished difference. Result has 343 places, 272 transitions, 2325 flow [2024-06-14 11:50:40,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2183, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2325, PETRI_PLACES=343, PETRI_TRANSITIONS=272} [2024-06-14 11:50:40,039 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 11:50:40,039 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 272 transitions, 2325 flow [2024-06-14 11:50:40,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:40,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:40,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:40,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 11:50:40,040 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)] === [2024-06-14 11:50:40,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:40,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1510877307, now seen corresponding path program 12 times [2024-06-14 11:50:40,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:40,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201115468] [2024-06-14 11:50:40,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:40,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:41,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:41,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201115468] [2024-06-14 11:50:41,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201115468] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:41,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:41,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:41,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021680241] [2024-06-14 11:50:41,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:41,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:41,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:41,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:41,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 272 transitions, 2325 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:41,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:41,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:41,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:41,813 INFO L124 PetriNetUnfolderBase]: 569/1114 cut-off events. [2024-06-14 11:50:41,813 INFO L125 PetriNetUnfolderBase]: For 157716/157716 co-relation queries the response was YES. [2024-06-14 11:50:41,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7275 conditions, 1114 events. 569/1114 cut-off events. For 157716/157716 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6469 event pairs, 56 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 7113. Up to 823 conditions per place. [2024-06-14 11:50:41,826 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 227 selfloop transitions, 63 changer transitions 0/293 dead transitions. [2024-06-14 11:50:41,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 293 transitions, 3331 flow [2024-06-14 11:50:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:41,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 11:50:41,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-14 11:50:41,827 INFO L175 Difference]: Start difference. First operand has 343 places, 272 transitions, 2325 flow. Second operand 11 states and 145 transitions. [2024-06-14 11:50:41,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 293 transitions, 3331 flow [2024-06-14 11:50:42,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 293 transitions, 3199 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:42,378 INFO L231 Difference]: Finished difference. Result has 345 places, 274 transitions, 2425 flow [2024-06-14 11:50:42,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2193, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2425, PETRI_PLACES=345, PETRI_TRANSITIONS=274} [2024-06-14 11:50:42,378 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-14 11:50:42,379 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 274 transitions, 2425 flow [2024-06-14 11:50:42,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:42,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:42,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:42,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 11:50:42,379 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)] === [2024-06-14 11:50:42,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:42,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1738956087, now seen corresponding path program 13 times [2024-06-14 11:50:42,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:42,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674163947] [2024-06-14 11:50:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:42,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:43,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:43,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674163947] [2024-06-14 11:50:43,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674163947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:43,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:43,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:43,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077935111] [2024-06-14 11:50:43,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:43,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:43,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:43,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:43,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:43,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:43,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 274 transitions, 2425 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:43,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:43,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:43,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:44,253 INFO L124 PetriNetUnfolderBase]: 556/1091 cut-off events. [2024-06-14 11:50:44,253 INFO L125 PetriNetUnfolderBase]: For 145317/145317 co-relation queries the response was YES. [2024-06-14 11:50:44,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5932 conditions, 1091 events. 556/1091 cut-off events. For 145317/145317 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6352 event pairs, 49 based on Foata normal form. 10/1099 useless extension candidates. Maximal degree in co-relation 5769. Up to 847 conditions per place. [2024-06-14 11:50:44,265 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 56 changer transitions 7/291 dead transitions. [2024-06-14 11:50:44,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 291 transitions, 3087 flow [2024-06-14 11:50:44,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:44,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 11:50:44,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 11:50:44,267 INFO L175 Difference]: Start difference. First operand has 345 places, 274 transitions, 2425 flow. Second operand 11 states and 142 transitions. [2024-06-14 11:50:44,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 291 transitions, 3087 flow [2024-06-14 11:50:44,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 291 transitions, 2883 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-14 11:50:44,603 INFO L231 Difference]: Finished difference. Result has 348 places, 270 transitions, 2305 flow [2024-06-14 11:50:44,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2305, PETRI_PLACES=348, PETRI_TRANSITIONS=270} [2024-06-14 11:50:44,604 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-14 11:50:44,604 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 270 transitions, 2305 flow [2024-06-14 11:50:44,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:44,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:44,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:44,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 11:50:44,605 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)] === [2024-06-14 11:50:44,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:44,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1843671565, now seen corresponding path program 14 times [2024-06-14 11:50:44,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:44,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875777175] [2024-06-14 11:50:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:44,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:44,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:45,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:45,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875777175] [2024-06-14 11:50:45,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875777175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:45,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:45,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:45,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394497902] [2024-06-14 11:50:45,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:45,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:45,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:45,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:45,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:46,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:46,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 270 transitions, 2305 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:46,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:46,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:46,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:46,408 INFO L124 PetriNetUnfolderBase]: 549/1084 cut-off events. [2024-06-14 11:50:46,408 INFO L125 PetriNetUnfolderBase]: For 128319/128319 co-relation queries the response was YES. [2024-06-14 11:50:46,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 1084 events. 549/1084 cut-off events. For 128319/128319 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6304 event pairs, 47 based on Foata normal form. 8/1090 useless extension candidates. Maximal degree in co-relation 5585. Up to 929 conditions per place. [2024-06-14 11:50:46,418 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 255 selfloop transitions, 19 changer transitions 11/288 dead transitions. [2024-06-14 11:50:46,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 288 transitions, 2975 flow [2024-06-14 11:50:46,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:46,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 11:50:46,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 11:50:46,419 INFO L175 Difference]: Start difference. First operand has 348 places, 270 transitions, 2305 flow. Second operand 11 states and 130 transitions. [2024-06-14 11:50:46,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 288 transitions, 2975 flow [2024-06-14 11:50:46,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 288 transitions, 2835 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:50:46,797 INFO L231 Difference]: Finished difference. Result has 347 places, 267 transitions, 2180 flow [2024-06-14 11:50:46,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2180, PETRI_PLACES=347, PETRI_TRANSITIONS=267} [2024-06-14 11:50:46,797 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-14 11:50:46,797 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 267 transitions, 2180 flow [2024-06-14 11:50:46,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:46,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:46,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:46,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 11:50:46,798 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)] === [2024-06-14 11:50:46,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:46,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1848255535, now seen corresponding path program 15 times [2024-06-14 11:50:46,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:46,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179584378] [2024-06-14 11:50:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:46,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:46,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:48,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:48,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179584378] [2024-06-14 11:50:48,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179584378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:48,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:48,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:48,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635856116] [2024-06-14 11:50:48,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:48,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:48,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:48,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:48,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:48,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:48,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 267 transitions, 2180 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:48,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:48,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:48,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:48,651 INFO L124 PetriNetUnfolderBase]: 542/1067 cut-off events. [2024-06-14 11:50:48,651 INFO L125 PetriNetUnfolderBase]: For 130395/130395 co-relation queries the response was YES. [2024-06-14 11:50:48,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5587 conditions, 1067 events. 542/1067 cut-off events. For 130395/130395 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6160 event pairs, 41 based on Foata normal form. 8/1073 useless extension candidates. Maximal degree in co-relation 5423. Up to 911 conditions per place. [2024-06-14 11:50:48,663 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 252 selfloop transitions, 17 changer transitions 14/286 dead transitions. [2024-06-14 11:50:48,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 286 transitions, 2848 flow [2024-06-14 11:50:48,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:48,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:48,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-14 11:50:48,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693181818181818 [2024-06-14 11:50:48,669 INFO L175 Difference]: Start difference. First operand has 347 places, 267 transitions, 2180 flow. Second operand 11 states and 130 transitions. [2024-06-14 11:50:48,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 286 transitions, 2848 flow [2024-06-14 11:50:49,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 286 transitions, 2804 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 11:50:49,058 INFO L231 Difference]: Finished difference. Result has 343 places, 263 transitions, 2151 flow [2024-06-14 11:50:49,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2151, PETRI_PLACES=343, PETRI_TRANSITIONS=263} [2024-06-14 11:50:49,058 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 11:50:49,058 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 263 transitions, 2151 flow [2024-06-14 11:50:49,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:49,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:49,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:49,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 11:50:49,059 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)] === [2024-06-14 11:50:49,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1677260155, now seen corresponding path program 16 times [2024-06-14 11:50:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:49,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446107163] [2024-06-14 11:50:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:49,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:49,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:50,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:50,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:50,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446107163] [2024-06-14 11:50:50,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446107163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:50,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:50,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:50,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325412071] [2024-06-14 11:50:50,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:50,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:50,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:50,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:50,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:50,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:50,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 263 transitions, 2151 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:50,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:50,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:50,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:50,996 INFO L124 PetriNetUnfolderBase]: 523/1024 cut-off events. [2024-06-14 11:50:50,997 INFO L125 PetriNetUnfolderBase]: For 89365/89365 co-relation queries the response was YES. [2024-06-14 11:50:51,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5443 conditions, 1024 events. 523/1024 cut-off events. For 89365/89365 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 5871 event pairs, 43 based on Foata normal form. 2/1024 useless extension candidates. Maximal degree in co-relation 5281. Up to 886 conditions per place. [2024-06-14 11:50:51,007 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 241 selfloop transitions, 34 changer transitions 0/278 dead transitions. [2024-06-14 11:50:51,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 278 transitions, 2785 flow [2024-06-14 11:50:51,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:51,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:50:51,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 11:50:51,008 INFO L175 Difference]: Start difference. First operand has 343 places, 263 transitions, 2151 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:50:51,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 278 transitions, 2785 flow [2024-06-14 11:50:51,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 278 transitions, 2745 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:51,315 INFO L231 Difference]: Finished difference. Result has 338 places, 264 transitions, 2235 flow [2024-06-14 11:50:51,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2235, PETRI_PLACES=338, PETRI_TRANSITIONS=264} [2024-06-14 11:50:51,315 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-06-14 11:50:51,315 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 264 transitions, 2235 flow [2024-06-14 11:50:51,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:51,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:51,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:51,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 11:50:51,316 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)] === [2024-06-14 11:50:51,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:51,316 INFO L85 PathProgramCache]: Analyzing trace with hash -206277107, now seen corresponding path program 17 times [2024-06-14 11:50:51,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:51,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016857120] [2024-06-14 11:50:51,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:51,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:52,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:52,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016857120] [2024-06-14 11:50:52,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016857120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:52,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:52,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:52,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991138460] [2024-06-14 11:50:52,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:52,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:52,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:52,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:52,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:52,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:52,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 264 transitions, 2235 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:52,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:52,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:52,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:53,422 INFO L124 PetriNetUnfolderBase]: 556/1091 cut-off events. [2024-06-14 11:50:53,422 INFO L125 PetriNetUnfolderBase]: For 158002/158002 co-relation queries the response was YES. [2024-06-14 11:50:53,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 1091 events. 556/1091 cut-off events. For 158002/158002 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6323 event pairs, 54 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 7009. Up to 880 conditions per place. [2024-06-14 11:50:53,435 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 36 changer transitions 0/285 dead transitions. [2024-06-14 11:50:53,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 285 transitions, 3229 flow [2024-06-14 11:50:53,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:50:53,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 11:50:53,436 INFO L175 Difference]: Start difference. First operand has 338 places, 264 transitions, 2235 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:50:53,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 285 transitions, 3229 flow [2024-06-14 11:50:54,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 285 transitions, 3115 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:50:54,011 INFO L231 Difference]: Finished difference. Result has 340 places, 266 transitions, 2303 flow [2024-06-14 11:50:54,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2121, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2303, PETRI_PLACES=340, PETRI_TRANSITIONS=266} [2024-06-14 11:50:54,012 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-14 11:50:54,012 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 266 transitions, 2303 flow [2024-06-14 11:50:54,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:54,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:54,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:54,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 11:50:54,012 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)] === [2024-06-14 11:50:54,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash -199843367, now seen corresponding path program 18 times [2024-06-14 11:50:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:54,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117768841] [2024-06-14 11:50:54,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:54,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:54,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:55,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:55,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:55,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117768841] [2024-06-14 11:50:55,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117768841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:55,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:55,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:50:55,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94065632] [2024-06-14 11:50:55,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:55,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:50:55,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:55,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:50:55,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:50:55,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:55,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 266 transitions, 2303 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:55,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:55,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:55,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:55,826 INFO L124 PetriNetUnfolderBase]: 543/1068 cut-off events. [2024-06-14 11:50:55,826 INFO L125 PetriNetUnfolderBase]: For 145526/145526 co-relation queries the response was YES. [2024-06-14 11:50:55,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5784 conditions, 1068 events. 543/1068 cut-off events. For 145526/145526 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 6201 event pairs, 47 based on Foata normal form. 10/1076 useless extension candidates. Maximal degree in co-relation 5623. Up to 898 conditions per place. [2024-06-14 11:50:55,840 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 244 selfloop transitions, 30 changer transitions 6/283 dead transitions. [2024-06-14 11:50:55,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 283 transitions, 2949 flow [2024-06-14 11:50:55,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:55,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:55,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:50:55,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:50:55,856 INFO L175 Difference]: Start difference. First operand has 340 places, 266 transitions, 2303 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:50:55,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 283 transitions, 2949 flow [2024-06-14 11:50:56,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 283 transitions, 2811 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-14 11:50:56,264 INFO L231 Difference]: Finished difference. Result has 344 places, 263 transitions, 2204 flow [2024-06-14 11:50:56,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2165, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2204, PETRI_PLACES=344, PETRI_TRANSITIONS=263} [2024-06-14 11:50:56,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-14 11:50:56,265 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 263 transitions, 2204 flow [2024-06-14 11:50:56,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:56,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:56,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:56,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 11:50:56,265 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)] === [2024-06-14 11:50:56,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:56,266 INFO L85 PathProgramCache]: Analyzing trace with hash -206092533, now seen corresponding path program 5 times [2024-06-14 11:50:56,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:56,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358980723] [2024-06-14 11:50:56,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:56,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:50:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:50:57,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:50:57,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358980723] [2024-06-14 11:50:57,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358980723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:50:57,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:50:57,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:50:57,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541220976] [2024-06-14 11:50:57,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:50:57,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:50:57,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:50:57,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:50:57,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:50:57,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:50:57,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 263 transitions, 2204 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:57,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:50:57,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:50:57,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:50:58,545 INFO L124 PetriNetUnfolderBase]: 538/1063 cut-off events. [2024-06-14 11:50:58,545 INFO L125 PetriNetUnfolderBase]: For 132059/132059 co-relation queries the response was YES. [2024-06-14 11:50:58,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5615 conditions, 1063 events. 538/1063 cut-off events. For 132059/132059 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6175 event pairs, 51 based on Foata normal form. 8/1069 useless extension candidates. Maximal degree in co-relation 5452. Up to 890 conditions per place. [2024-06-14 11:50:58,554 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 241 selfloop transitions, 24 changer transitions 12/280 dead transitions. [2024-06-14 11:50:58,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 280 transitions, 2844 flow [2024-06-14 11:50:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:50:58,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:50:58,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:50:58,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:50:58,556 INFO L175 Difference]: Start difference. First operand has 344 places, 263 transitions, 2204 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:50:58,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 280 transitions, 2844 flow [2024-06-14 11:50:58,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 280 transitions, 2751 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:50:58,924 INFO L231 Difference]: Finished difference. Result has 343 places, 257 transitions, 2115 flow [2024-06-14 11:50:58,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2111, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2115, PETRI_PLACES=343, PETRI_TRANSITIONS=257} [2024-06-14 11:50:58,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-14 11:50:58,925 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 257 transitions, 2115 flow [2024-06-14 11:50:58,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:50:58,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:50:58,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:50:58,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 11:50:58,926 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)] === [2024-06-14 11:50:58,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:50:58,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1670758091, now seen corresponding path program 6 times [2024-06-14 11:50:58,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:50:58,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180543007] [2024-06-14 11:50:58,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:50:58,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:50:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:00,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:00,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180543007] [2024-06-14 11:51:00,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180543007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:00,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:00,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062821582] [2024-06-14 11:51:00,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:00,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:00,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:00,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:00,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:00,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 257 transitions, 2115 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:00,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:00,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:00,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:01,409 INFO L124 PetriNetUnfolderBase]: 544/1081 cut-off events. [2024-06-14 11:51:01,410 INFO L125 PetriNetUnfolderBase]: For 175553/175553 co-relation queries the response was YES. [2024-06-14 11:51:01,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6633 conditions, 1081 events. 544/1081 cut-off events. For 175553/175553 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6274 event pairs, 55 based on Foata normal form. 6/1085 useless extension candidates. Maximal degree in co-relation 6470. Up to 876 conditions per place. [2024-06-14 11:51:01,421 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 246 selfloop transitions, 23 changer transitions 7/279 dead transitions. [2024-06-14 11:51:01,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 279 transitions, 3041 flow [2024-06-14 11:51:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:01,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:51:01,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 11:51:01,423 INFO L175 Difference]: Start difference. First operand has 343 places, 257 transitions, 2115 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:51:01,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 279 transitions, 3041 flow [2024-06-14 11:51:01,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 279 transitions, 2971 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-14 11:51:01,843 INFO L231 Difference]: Finished difference. Result has 337 places, 254 transitions, 2080 flow [2024-06-14 11:51:01,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2080, PETRI_PLACES=337, PETRI_TRANSITIONS=254} [2024-06-14 11:51:01,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 306 predicate places. [2024-06-14 11:51:01,844 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 254 transitions, 2080 flow [2024-06-14 11:51:01,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:01,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:01,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:01,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 11:51:01,848 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)] === [2024-06-14 11:51:01,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:01,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1517317991, now seen corresponding path program 7 times [2024-06-14 11:51:01,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:01,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436623857] [2024-06-14 11:51:01,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:01,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:04,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:04,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:04,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436623857] [2024-06-14 11:51:04,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436623857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:04,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:04,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:04,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543231077] [2024-06-14 11:51:04,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:04,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:04,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:04,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:04,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:04,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:04,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 254 transitions, 2080 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:04,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:04,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:04,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:04,898 INFO L124 PetriNetUnfolderBase]: 541/1076 cut-off events. [2024-06-14 11:51:04,898 INFO L125 PetriNetUnfolderBase]: For 182574/182574 co-relation queries the response was YES. [2024-06-14 11:51:04,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6556 conditions, 1076 events. 541/1076 cut-off events. For 182574/182574 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6257 event pairs, 61 based on Foata normal form. 8/1082 useless extension candidates. Maximal degree in co-relation 6396. Up to 878 conditions per place. [2024-06-14 11:51:04,913 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 226 selfloop transitions, 36 changer transitions 7/272 dead transitions. [2024-06-14 11:51:04,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 272 transitions, 2706 flow [2024-06-14 11:51:04,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:04,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 11:51:04,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 11:51:04,923 INFO L175 Difference]: Start difference. First operand has 337 places, 254 transitions, 2080 flow. Second operand 12 states and 148 transitions. [2024-06-14 11:51:04,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 272 transitions, 2706 flow [2024-06-14 11:51:05,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 272 transitions, 2656 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:51:05,367 INFO L231 Difference]: Finished difference. Result has 335 places, 251 transitions, 2087 flow [2024-06-14 11:51:05,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2087, PETRI_PLACES=335, PETRI_TRANSITIONS=251} [2024-06-14 11:51:05,368 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 304 predicate places. [2024-06-14 11:51:05,368 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 251 transitions, 2087 flow [2024-06-14 11:51:05,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:05,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:05,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:05,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 11:51:05,369 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)] === [2024-06-14 11:51:05,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash -199836423, now seen corresponding path program 8 times [2024-06-14 11:51:05,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:05,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193296289] [2024-06-14 11:51:05,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:05,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:07,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:07,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193296289] [2024-06-14 11:51:07,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193296289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:07,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:07,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:07,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024923088] [2024-06-14 11:51:07,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:07,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:07,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:07,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:07,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:07,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:07,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 251 transitions, 2087 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:07,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:07,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:07,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:08,013 INFO L124 PetriNetUnfolderBase]: 514/1019 cut-off events. [2024-06-14 11:51:08,014 INFO L125 PetriNetUnfolderBase]: For 124663/124663 co-relation queries the response was YES. [2024-06-14 11:51:08,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5369 conditions, 1019 events. 514/1019 cut-off events. For 124663/124663 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 5888 event pairs, 47 based on Foata normal form. 8/1025 useless extension candidates. Maximal degree in co-relation 5210. Up to 845 conditions per place. [2024-06-14 11:51:08,025 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 235 selfloop transitions, 22 changer transitions 7/267 dead transitions. [2024-06-14 11:51:08,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 267 transitions, 2697 flow [2024-06-14 11:51:08,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 11:51:08,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:51:08,026 INFO L175 Difference]: Start difference. First operand has 335 places, 251 transitions, 2087 flow. Second operand 12 states and 138 transitions. [2024-06-14 11:51:08,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 267 transitions, 2697 flow [2024-06-14 11:51:08,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 267 transitions, 2625 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:08,316 INFO L231 Difference]: Finished difference. Result has 334 places, 248 transitions, 2038 flow [2024-06-14 11:51:08,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2038, PETRI_PLACES=334, PETRI_TRANSITIONS=248} [2024-06-14 11:51:08,316 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-14 11:51:08,317 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 248 transitions, 2038 flow [2024-06-14 11:51:08,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:08,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:08,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:08,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-14 11:51:08,317 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)] === [2024-06-14 11:51:08,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1511061881, now seen corresponding path program 9 times [2024-06-14 11:51:08,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:08,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404676709] [2024-06-14 11:51:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:10,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:10,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404676709] [2024-06-14 11:51:10,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404676709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:10,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:10,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:10,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086387481] [2024-06-14 11:51:10,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:10,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:10,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:10,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:10,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:10,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:10,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 248 transitions, 2038 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:10,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:10,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:10,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:11,319 INFO L124 PetriNetUnfolderBase]: 509/1016 cut-off events. [2024-06-14 11:51:11,319 INFO L125 PetriNetUnfolderBase]: For 122488/122488 co-relation queries the response was YES. [2024-06-14 11:51:11,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5289 conditions, 1016 events. 509/1016 cut-off events. For 122488/122488 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 5894 event pairs, 49 based on Foata normal form. 8/1022 useless extension candidates. Maximal degree in co-relation 5131. Up to 824 conditions per place. [2024-06-14 11:51:11,333 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 220 selfloop transitions, 34 changer transitions 9/266 dead transitions. [2024-06-14 11:51:11,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 266 transitions, 2652 flow [2024-06-14 11:51:11,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:11,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:11,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 11:51:11,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 11:51:11,334 INFO L175 Difference]: Start difference. First operand has 334 places, 248 transitions, 2038 flow. Second operand 12 states and 146 transitions. [2024-06-14 11:51:11,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 266 transitions, 2652 flow [2024-06-14 11:51:11,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 266 transitions, 2598 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:51:11,637 INFO L231 Difference]: Finished difference. Result has 331 places, 245 transitions, 2036 flow [2024-06-14 11:51:11,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2036, PETRI_PLACES=331, PETRI_TRANSITIONS=245} [2024-06-14 11:51:11,638 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 300 predicate places. [2024-06-14 11:51:11,638 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 245 transitions, 2036 flow [2024-06-14 11:51:11,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:11,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:11,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:11,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-14 11:51:11,638 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)] === [2024-06-14 11:51:11,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1517557001, now seen corresponding path program 10 times [2024-06-14 11:51:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:11,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578235153] [2024-06-14 11:51:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:11,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:12,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:12,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:12,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578235153] [2024-06-14 11:51:12,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578235153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:12,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:12,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:12,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766741700] [2024-06-14 11:51:12,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:12,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:12,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:12,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:12,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:13,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:13,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 245 transitions, 2036 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:13,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:13,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:13,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:13,524 INFO L124 PetriNetUnfolderBase]: 515/1038 cut-off events. [2024-06-14 11:51:13,525 INFO L125 PetriNetUnfolderBase]: For 144608/144608 co-relation queries the response was YES. [2024-06-14 11:51:13,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 1038 events. 515/1038 cut-off events. For 144608/144608 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 6014 event pairs, 58 based on Foata normal form. 6/1042 useless extension candidates. Maximal degree in co-relation 5854. Up to 779 conditions per place. [2024-06-14 11:51:13,537 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 221 selfloop transitions, 34 changer transitions 7/265 dead transitions. [2024-06-14 11:51:13,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 265 transitions, 2880 flow [2024-06-14 11:51:13,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:51:13,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:51:13,538 INFO L175 Difference]: Start difference. First operand has 331 places, 245 transitions, 2036 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:51:13,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 265 transitions, 2880 flow [2024-06-14 11:51:14,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 265 transitions, 2804 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:14,031 INFO L231 Difference]: Finished difference. Result has 328 places, 242 transitions, 2014 flow [2024-06-14 11:51:14,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1964, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2014, PETRI_PLACES=328, PETRI_TRANSITIONS=242} [2024-06-14 11:51:14,032 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 297 predicate places. [2024-06-14 11:51:14,032 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 242 transitions, 2014 flow [2024-06-14 11:51:14,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:14,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:14,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:14,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-14 11:51:14,033 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)] === [2024-06-14 11:51:14,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:14,033 INFO L85 PathProgramCache]: Analyzing trace with hash 276373233, now seen corresponding path program 11 times [2024-06-14 11:51:14,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:14,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486611956] [2024-06-14 11:51:14,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:14,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:15,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:15,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486611956] [2024-06-14 11:51:15,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486611956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:15,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:15,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:15,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138160961] [2024-06-14 11:51:15,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:15,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:15,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:15,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:16,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:16,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 242 transitions, 2014 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:16,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:16,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:16,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:16,471 INFO L124 PetriNetUnfolderBase]: 530/1067 cut-off events. [2024-06-14 11:51:16,471 INFO L125 PetriNetUnfolderBase]: For 194444/194444 co-relation queries the response was YES. [2024-06-14 11:51:16,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7084 conditions, 1067 events. 530/1067 cut-off events. For 194444/194444 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6207 event pairs, 66 based on Foata normal form. 6/1071 useless extension candidates. Maximal degree in co-relation 6928. Up to 766 conditions per place. [2024-06-14 11:51:16,483 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 212 selfloop transitions, 39 changer transitions 9/263 dead transitions. [2024-06-14 11:51:16,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 263 transitions, 2888 flow [2024-06-14 11:51:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:16,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 11:51:16,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 11:51:16,484 INFO L175 Difference]: Start difference. First operand has 328 places, 242 transitions, 2014 flow. Second operand 12 states and 147 transitions. [2024-06-14 11:51:16,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 263 transitions, 2888 flow [2024-06-14 11:51:16,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 263 transitions, 2797 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 11:51:16,933 INFO L231 Difference]: Finished difference. Result has 325 places, 239 transitions, 1989 flow [2024-06-14 11:51:16,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1989, PETRI_PLACES=325, PETRI_TRANSITIONS=239} [2024-06-14 11:51:16,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-14 11:51:16,933 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 239 transitions, 1989 flow [2024-06-14 11:51:16,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:16,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:16,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:16,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-14 11:51:16,934 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)] === [2024-06-14 11:51:16,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:16,934 INFO L85 PathProgramCache]: Analyzing trace with hash 267802353, now seen corresponding path program 12 times [2024-06-14 11:51:16,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:16,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865567203] [2024-06-14 11:51:16,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:16,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:16,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:18,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:18,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:18,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865567203] [2024-06-14 11:51:18,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865567203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:18,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:18,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223088547] [2024-06-14 11:51:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:18,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:18,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:18,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:18,596 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:18,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 239 transitions, 1989 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:18,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:18,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:18,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:19,001 INFO L124 PetriNetUnfolderBase]: 525/1064 cut-off events. [2024-06-14 11:51:19,001 INFO L125 PetriNetUnfolderBase]: For 228827/228827 co-relation queries the response was YES. [2024-06-14 11:51:19,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6810 conditions, 1064 events. 525/1064 cut-off events. For 228827/228827 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6180 event pairs, 77 based on Foata normal form. 14/1076 useless extension candidates. Maximal degree in co-relation 6655. Up to 842 conditions per place. [2024-06-14 11:51:19,013 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 31 changer transitions 13/257 dead transitions. [2024-06-14 11:51:19,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 257 transitions, 2583 flow [2024-06-14 11:51:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:51:19,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:51:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 11:51:19,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 11:51:19,014 INFO L175 Difference]: Start difference. First operand has 325 places, 239 transitions, 1989 flow. Second operand 12 states and 146 transitions. [2024-06-14 11:51:19,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 257 transitions, 2583 flow [2024-06-14 11:51:19,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 257 transitions, 2503 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:19,515 INFO L231 Difference]: Finished difference. Result has 322 places, 233 transitions, 1932 flow [2024-06-14 11:51:19,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1909, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1932, PETRI_PLACES=322, PETRI_TRANSITIONS=233} [2024-06-14 11:51:19,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-14 11:51:19,516 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 233 transitions, 1932 flow [2024-06-14 11:51:19,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:19,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:19,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:19,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-14 11:51:19,516 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)] === [2024-06-14 11:51:19,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash 276084933, now seen corresponding path program 13 times [2024-06-14 11:51:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:19,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374643959] [2024-06-14 11:51:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:19,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374643959] [2024-06-14 11:51:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374643959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:21,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:21,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:21,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357301221] [2024-06-14 11:51:21,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:21,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:21,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:21,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:21,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:21,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 233 transitions, 1932 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:21,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:21,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:21,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:21,614 INFO L124 PetriNetUnfolderBase]: 486/981 cut-off events. [2024-06-14 11:51:21,614 INFO L125 PetriNetUnfolderBase]: For 134863/134863 co-relation queries the response was YES. [2024-06-14 11:51:21,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5749 conditions, 981 events. 486/981 cut-off events. For 134863/134863 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 5585 event pairs, 54 based on Foata normal form. 6/985 useless extension candidates. Maximal degree in co-relation 5596. Up to 780 conditions per place. [2024-06-14 11:51:21,626 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 204 selfloop transitions, 27 changer transitions 16/250 dead transitions. [2024-06-14 11:51:21,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 250 transitions, 2502 flow [2024-06-14 11:51:21,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:21,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:51:21,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:51:21,627 INFO L175 Difference]: Start difference. First operand has 322 places, 233 transitions, 1932 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:51:21,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 250 transitions, 2502 flow [2024-06-14 11:51:21,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 250 transitions, 2432 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:51:21,999 INFO L231 Difference]: Finished difference. Result has 315 places, 224 transitions, 1849 flow [2024-06-14 11:51:21,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1862, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1849, PETRI_PLACES=315, PETRI_TRANSITIONS=224} [2024-06-14 11:51:22,000 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 284 predicate places. [2024-06-14 11:51:22,000 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 224 transitions, 1849 flow [2024-06-14 11:51:22,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:22,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:22,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:22,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-14 11:51:22,001 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)] === [2024-06-14 11:51:22,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:22,001 INFO L85 PathProgramCache]: Analyzing trace with hash 89180931, now seen corresponding path program 19 times [2024-06-14 11:51:22,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:22,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488845091] [2024-06-14 11:51:22,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:22,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:23,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:23,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:23,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488845091] [2024-06-14 11:51:23,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488845091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:23,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:23,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:23,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430149227] [2024-06-14 11:51:23,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:23,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:23,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:23,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:23,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:23,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:23,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 224 transitions, 1849 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:23,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:23,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:23,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:24,273 INFO L124 PetriNetUnfolderBase]: 465/931 cut-off events. [2024-06-14 11:51:24,274 INFO L125 PetriNetUnfolderBase]: For 107853/107856 co-relation queries the response was YES. [2024-06-14 11:51:24,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5551 conditions, 931 events. 465/931 cut-off events. For 107853/107856 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5211 event pairs, 60 based on Foata normal form. 2/928 useless extension candidates. Maximal degree in co-relation 5414. Up to 683 conditions per place. [2024-06-14 11:51:24,284 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 166 selfloop transitions, 68 changer transitions 0/237 dead transitions. [2024-06-14 11:51:24,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 237 transitions, 2397 flow [2024-06-14 11:51:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:24,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 11:51:24,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39204545454545453 [2024-06-14 11:51:24,285 INFO L175 Difference]: Start difference. First operand has 315 places, 224 transitions, 1849 flow. Second operand 11 states and 138 transitions. [2024-06-14 11:51:24,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 237 transitions, 2397 flow [2024-06-14 11:51:24,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 237 transitions, 2329 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-14 11:51:24,652 INFO L231 Difference]: Finished difference. Result has 302 places, 225 transitions, 1975 flow [2024-06-14 11:51:24,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1975, PETRI_PLACES=302, PETRI_TRANSITIONS=225} [2024-06-14 11:51:24,652 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 11:51:24,652 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 225 transitions, 1975 flow [2024-06-14 11:51:24,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:24,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:24,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:24,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-14 11:51:24,653 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)] === [2024-06-14 11:51:24,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash 82924821, now seen corresponding path program 20 times [2024-06-14 11:51:24,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:24,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980264114] [2024-06-14 11:51:24,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:24,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:24,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:26,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:26,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:26,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980264114] [2024-06-14 11:51:26,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980264114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:26,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:26,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:26,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185222717] [2024-06-14 11:51:26,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:26,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:26,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:26,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:26,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:26,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:26,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 225 transitions, 1975 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:26,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:26,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:26,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:26,788 INFO L124 PetriNetUnfolderBase]: 469/939 cut-off events. [2024-06-14 11:51:26,789 INFO L125 PetriNetUnfolderBase]: For 101550/101553 co-relation queries the response was YES. [2024-06-14 11:51:26,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5680 conditions, 939 events. 469/939 cut-off events. For 101550/101553 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 5269 event pairs, 60 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 5547. Up to 593 conditions per place. [2024-06-14 11:51:26,801 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 125 selfloop transitions, 110 changer transitions 0/238 dead transitions. [2024-06-14 11:51:26,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 238 transitions, 2525 flow [2024-06-14 11:51:26,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:26,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 11:51:26,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-14 11:51:26,803 INFO L175 Difference]: Start difference. First operand has 302 places, 225 transitions, 1975 flow. Second operand 11 states and 142 transitions. [2024-06-14 11:51:26,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 238 transitions, 2525 flow [2024-06-14 11:51:27,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 238 transitions, 2343 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:27,103 INFO L231 Difference]: Finished difference. Result has 304 places, 226 transitions, 2071 flow [2024-06-14 11:51:27,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2071, PETRI_PLACES=304, PETRI_TRANSITIONS=226} [2024-06-14 11:51:27,103 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-14 11:51:27,103 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 226 transitions, 2071 flow [2024-06-14 11:51:27,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:27,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:27,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:27,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-14 11:51:27,104 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)] === [2024-06-14 11:51:27,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:27,104 INFO L85 PathProgramCache]: Analyzing trace with hash -349047855, now seen corresponding path program 21 times [2024-06-14 11:51:27,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:27,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465927845] [2024-06-14 11:51:27,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:27,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:28,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:28,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:28,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465927845] [2024-06-14 11:51:28,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465927845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:28,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:28,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:28,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462917654] [2024-06-14 11:51:28,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:28,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:28,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:28,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:28,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:28,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:28,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 226 transitions, 2071 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:28,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:28,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:28,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:28,854 INFO L124 PetriNetUnfolderBase]: 485/975 cut-off events. [2024-06-14 11:51:28,854 INFO L125 PetriNetUnfolderBase]: For 147220/147223 co-relation queries the response was YES. [2024-06-14 11:51:28,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5961 conditions, 975 events. 485/975 cut-off events. For 147220/147223 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5535 event pairs, 66 based on Foata normal form. 10/980 useless extension candidates. Maximal degree in co-relation 5827. Up to 737 conditions per place. [2024-06-14 11:51:28,863 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 58 changer transitions 7/242 dead transitions. [2024-06-14 11:51:28,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 242 transitions, 2681 flow [2024-06-14 11:51:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:28,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:28,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 11:51:28,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-14 11:51:28,864 INFO L175 Difference]: Start difference. First operand has 304 places, 226 transitions, 2071 flow. Second operand 11 states and 141 transitions. [2024-06-14 11:51:28,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 242 transitions, 2681 flow [2024-06-14 11:51:29,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 242 transitions, 2413 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:29,191 INFO L231 Difference]: Finished difference. Result has 306 places, 223 transitions, 1945 flow [2024-06-14 11:51:29,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1945, PETRI_PLACES=306, PETRI_TRANSITIONS=223} [2024-06-14 11:51:29,192 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-14 11:51:29,192 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 223 transitions, 1945 flow [2024-06-14 11:51:29,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:29,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:29,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:29,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-14 11:51:29,192 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)] === [2024-06-14 11:51:29,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 82747191, now seen corresponding path program 22 times [2024-06-14 11:51:29,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:29,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992952072] [2024-06-14 11:51:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:29,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:30,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:30,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:30,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992952072] [2024-06-14 11:51:30,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992952072] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:30,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:30,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:30,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924049521] [2024-06-14 11:51:30,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:30,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:30,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:30,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:30,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:30,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:30,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 223 transitions, 1945 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:30,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:30,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:30,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:31,204 INFO L124 PetriNetUnfolderBase]: 499/1003 cut-off events. [2024-06-14 11:51:31,204 INFO L125 PetriNetUnfolderBase]: For 162717/162720 co-relation queries the response was YES. [2024-06-14 11:51:31,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7192 conditions, 1003 events. 499/1003 cut-off events. For 162717/162720 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5692 event pairs, 73 based on Foata normal form. 2/1000 useless extension candidates. Maximal degree in co-relation 7057. Up to 575 conditions per place. [2024-06-14 11:51:31,215 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 111 changer transitions 0/242 dead transitions. [2024-06-14 11:51:31,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 242 transitions, 2829 flow [2024-06-14 11:51:31,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 11:51:31,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-14 11:51:31,217 INFO L175 Difference]: Start difference. First operand has 306 places, 223 transitions, 1945 flow. Second operand 11 states and 147 transitions. [2024-06-14 11:51:31,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 242 transitions, 2829 flow [2024-06-14 11:51:31,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 242 transitions, 2652 flow, removed 26 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:31,685 INFO L231 Difference]: Finished difference. Result has 306 places, 225 transitions, 2108 flow [2024-06-14 11:51:31,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1768, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2108, PETRI_PLACES=306, PETRI_TRANSITIONS=225} [2024-06-14 11:51:31,685 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-14 11:51:31,685 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 225 transitions, 2108 flow [2024-06-14 11:51:31,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:31,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:31,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:31,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-14 11:51:31,686 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)] === [2024-06-14 11:51:31,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:31,686 INFO L85 PathProgramCache]: Analyzing trace with hash -570692895, now seen corresponding path program 23 times [2024-06-14 11:51:31,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:31,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82808919] [2024-06-14 11:51:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:31,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:31,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:33,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:33,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82808919] [2024-06-14 11:51:33,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82808919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:33,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:33,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414251980] [2024-06-14 11:51:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:33,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:33,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:33,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:33,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 225 transitions, 2108 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:33,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:33,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:33,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:33,905 INFO L124 PetriNetUnfolderBase]: 515/1039 cut-off events. [2024-06-14 11:51:33,906 INFO L125 PetriNetUnfolderBase]: For 209898/209901 co-relation queries the response was YES. [2024-06-14 11:51:33,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1039 events. 515/1039 cut-off events. For 209898/209901 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5962 event pairs, 79 based on Foata normal form. 10/1044 useless extension candidates. Maximal degree in co-relation 7365. Up to 808 conditions per place. [2024-06-14 11:51:33,917 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 178 selfloop transitions, 54 changer transitions 6/241 dead transitions. [2024-06-14 11:51:33,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 241 transitions, 2720 flow [2024-06-14 11:51:33,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:33,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:33,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 11:51:33,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-14 11:51:33,918 INFO L175 Difference]: Start difference. First operand has 306 places, 225 transitions, 2108 flow. Second operand 11 states and 143 transitions. [2024-06-14 11:51:33,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 241 transitions, 2720 flow [2024-06-14 11:51:34,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 241 transitions, 2419 flow, removed 38 selfloop flow, removed 10 redundant places. [2024-06-14 11:51:34,433 INFO L231 Difference]: Finished difference. Result has 307 places, 223 transitions, 1958 flow [2024-06-14 11:51:34,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1813, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1958, PETRI_PLACES=307, PETRI_TRANSITIONS=223} [2024-06-14 11:51:34,434 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-14 11:51:34,434 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 223 transitions, 1958 flow [2024-06-14 11:51:34,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:34,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:34,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:34,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-14 11:51:34,435 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)] === [2024-06-14 11:51:34,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:34,435 INFO L85 PathProgramCache]: Analyzing trace with hash -576949005, now seen corresponding path program 24 times [2024-06-14 11:51:34,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:34,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347189864] [2024-06-14 11:51:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:34,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:34,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:35,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:35,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347189864] [2024-06-14 11:51:35,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347189864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:35,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:35,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:35,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990886256] [2024-06-14 11:51:35,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:35,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:35,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:35,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:35,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:36,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:36,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 223 transitions, 1958 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:36,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:36,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:36,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:36,520 INFO L124 PetriNetUnfolderBase]: 502/1014 cut-off events. [2024-06-14 11:51:36,520 INFO L125 PetriNetUnfolderBase]: For 166338/166341 co-relation queries the response was YES. [2024-06-14 11:51:36,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7213 conditions, 1014 events. 502/1014 cut-off events. For 166338/166341 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5780 event pairs, 79 based on Foata normal form. 2/1011 useless extension candidates. Maximal degree in co-relation 7079. Up to 849 conditions per place. [2024-06-14 11:51:36,530 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 188 selfloop transitions, 45 changer transitions 0/236 dead transitions. [2024-06-14 11:51:36,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 236 transitions, 2506 flow [2024-06-14 11:51:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:36,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 11:51:36,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-14 11:51:36,531 INFO L175 Difference]: Start difference. First operand has 307 places, 223 transitions, 1958 flow. Second operand 11 states and 135 transitions. [2024-06-14 11:51:36,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 236 transitions, 2506 flow [2024-06-14 11:51:37,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 236 transitions, 2344 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:37,183 INFO L231 Difference]: Finished difference. Result has 307 places, 224 transitions, 1946 flow [2024-06-14 11:51:37,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1946, PETRI_PLACES=307, PETRI_TRANSITIONS=224} [2024-06-14 11:51:37,183 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-06-14 11:51:37,183 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 224 transitions, 1946 flow [2024-06-14 11:51:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:37,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:37,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:37,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-14 11:51:37,184 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)] === [2024-06-14 11:51:37,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash -577126635, now seen corresponding path program 25 times [2024-06-14 11:51:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221320395] [2024-06-14 11:51:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:39,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:39,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:39,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221320395] [2024-06-14 11:51:39,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221320395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:39,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:39,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:39,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951772404] [2024-06-14 11:51:39,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:39,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:39,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:39,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:39,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:39,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:39,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 224 transitions, 1946 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:39,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:39,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:39,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:39,743 INFO L124 PetriNetUnfolderBase]: 506/1022 cut-off events. [2024-06-14 11:51:39,743 INFO L125 PetriNetUnfolderBase]: For 169461/169464 co-relation queries the response was YES. [2024-06-14 11:51:39,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 1022 events. 506/1022 cut-off events. For 169461/169464 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5842 event pairs, 79 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 7117. Up to 831 conditions per place. [2024-06-14 11:51:39,754 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 187 selfloop transitions, 48 changer transitions 0/238 dead transitions. [2024-06-14 11:51:39,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 238 transitions, 2502 flow [2024-06-14 11:51:39,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-14 11:51:39,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 11:51:39,756 INFO L175 Difference]: Start difference. First operand has 307 places, 224 transitions, 1946 flow. Second operand 11 states and 136 transitions. [2024-06-14 11:51:39,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 238 transitions, 2502 flow [2024-06-14 11:51:40,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 238 transitions, 2362 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:40,266 INFO L231 Difference]: Finished difference. Result has 309 places, 225 transitions, 1964 flow [2024-06-14 11:51:40,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1964, PETRI_PLACES=309, PETRI_TRANSITIONS=225} [2024-06-14 11:51:40,267 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-14 11:51:40,267 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 225 transitions, 1964 flow [2024-06-14 11:51:40,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:40,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:40,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:40,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-14 11:51:40,267 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)] === [2024-06-14 11:51:40,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:40,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1829983817, now seen corresponding path program 26 times [2024-06-14 11:51:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:40,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089597247] [2024-06-14 11:51:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:40,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:41,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:41,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089597247] [2024-06-14 11:51:41,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089597247] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:41,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227707203] [2024-06-14 11:51:41,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:41,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:41,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 225 transitions, 1964 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:41,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:41,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:41,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:42,258 INFO L124 PetriNetUnfolderBase]: 518/1046 cut-off events. [2024-06-14 11:51:42,258 INFO L125 PetriNetUnfolderBase]: For 204296/204299 co-relation queries the response was YES. [2024-06-14 11:51:42,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7380 conditions, 1046 events. 518/1046 cut-off events. For 204296/204299 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6016 event pairs, 79 based on Foata normal form. 8/1049 useless extension candidates. Maximal degree in co-relation 7245. Up to 895 conditions per place. [2024-06-14 11:51:42,270 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 205 selfloop transitions, 22 changer transitions 11/241 dead transitions. [2024-06-14 11:51:42,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 241 transitions, 2540 flow [2024-06-14 11:51:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:51:42,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 11:51:42,271 INFO L175 Difference]: Start difference. First operand has 309 places, 225 transitions, 1964 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:51:42,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 241 transitions, 2540 flow [2024-06-14 11:51:42,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 241 transitions, 2392 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:42,835 INFO L231 Difference]: Finished difference. Result has 311 places, 222 transitions, 1841 flow [2024-06-14 11:51:42,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1841, PETRI_PLACES=311, PETRI_TRANSITIONS=222} [2024-06-14 11:51:42,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 280 predicate places. [2024-06-14 11:51:42,836 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 222 transitions, 1841 flow [2024-06-14 11:51:42,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:42,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:42,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:42,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-14 11:51:42,837 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)] === [2024-06-14 11:51:42,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:42,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1829868497, now seen corresponding path program 27 times [2024-06-14 11:51:42,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:42,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036307926] [2024-06-14 11:51:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:42,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:44,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:44,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:44,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036307926] [2024-06-14 11:51:44,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036307926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:44,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:44,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051390965] [2024-06-14 11:51:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:44,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:44,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:44,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:44,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:44,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:44,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 222 transitions, 1841 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:44,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:44,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:44,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:44,537 INFO L124 PetriNetUnfolderBase]: 511/1037 cut-off events. [2024-06-14 11:51:44,538 INFO L125 PetriNetUnfolderBase]: For 206510/206513 co-relation queries the response was YES. [2024-06-14 11:51:44,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7199 conditions, 1037 events. 511/1037 cut-off events. For 206510/206513 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 5958 event pairs, 77 based on Foata normal form. 8/1040 useless extension candidates. Maximal degree in co-relation 7063. Up to 877 conditions per place. [2024-06-14 11:51:44,549 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 202 selfloop transitions, 20 changer transitions 14/239 dead transitions. [2024-06-14 11:51:44,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 239 transitions, 2415 flow [2024-06-14 11:51:44,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:51:44,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 11:51:44,550 INFO L175 Difference]: Start difference. First operand has 311 places, 222 transitions, 1841 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:51:44,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 239 transitions, 2415 flow [2024-06-14 11:51:45,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 239 transitions, 2308 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:45,124 INFO L231 Difference]: Finished difference. Result has 306 places, 218 transitions, 1758 flow [2024-06-14 11:51:45,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1758, PETRI_PLACES=306, PETRI_TRANSITIONS=218} [2024-06-14 11:51:45,124 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-14 11:51:45,124 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 218 transitions, 1758 flow [2024-06-14 11:51:45,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:45,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:45,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:45,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-14 11:51:45,125 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)] === [2024-06-14 11:51:45,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:45,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1948398427, now seen corresponding path program 28 times [2024-06-14 11:51:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:45,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909266522] [2024-06-14 11:51:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:45,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:46,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:46,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909266522] [2024-06-14 11:51:46,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909266522] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:46,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:46,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:46,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121352295] [2024-06-14 11:51:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:46,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:46,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:46,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:46,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 218 transitions, 1758 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:46,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:46,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:46,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:47,060 INFO L124 PetriNetUnfolderBase]: 492/994 cut-off events. [2024-06-14 11:51:47,060 INFO L125 PetriNetUnfolderBase]: For 170915/170918 co-relation queries the response was YES. [2024-06-14 11:51:47,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6975 conditions, 994 events. 492/994 cut-off events. For 170915/170918 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5641 event pairs, 77 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 6841. Up to 754 conditions per place. [2024-06-14 11:51:47,071 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 64 changer transitions 0/231 dead transitions. [2024-06-14 11:51:47,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 231 transitions, 2290 flow [2024-06-14 11:51:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:47,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:51:47,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:51:47,073 INFO L175 Difference]: Start difference. First operand has 306 places, 218 transitions, 1758 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:51:47,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 231 transitions, 2290 flow [2024-06-14 11:51:47,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 231 transitions, 2244 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:47,567 INFO L231 Difference]: Finished difference. Result has 301 places, 219 transitions, 1894 flow [2024-06-14 11:51:47,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1894, PETRI_PLACES=301, PETRI_TRANSITIONS=219} [2024-06-14 11:51:47,568 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 11:51:47,568 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 219 transitions, 1894 flow [2024-06-14 11:51:47,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:47,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:47,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:47,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-14 11:51:47,569 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)] === [2024-06-14 11:51:47,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1338374259, now seen corresponding path program 29 times [2024-06-14 11:51:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640571840] [2024-06-14 11:51:47,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:48,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:48,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640571840] [2024-06-14 11:51:48,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640571840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:48,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:48,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:48,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706350085] [2024-06-14 11:51:48,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:48,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:48,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:48,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:48,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:48,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:48,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 219 transitions, 1894 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:48,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:48,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:48,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:49,382 INFO L124 PetriNetUnfolderBase]: 501/1012 cut-off events. [2024-06-14 11:51:49,382 INFO L125 PetriNetUnfolderBase]: For 199620/199620 co-relation queries the response was YES. [2024-06-14 11:51:49,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6886 conditions, 1012 events. 501/1012 cut-off events. For 199620/199620 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5772 event pairs, 73 based on Foata normal form. 10/1020 useless extension candidates. Maximal degree in co-relation 6754. Up to 876 conditions per place. [2024-06-14 11:51:49,393 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 198 selfloop transitions, 25 changer transitions 8/234 dead transitions. [2024-06-14 11:51:49,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 234 transitions, 2434 flow [2024-06-14 11:51:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:49,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:49,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-14 11:51:49,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3778409090909091 [2024-06-14 11:51:49,394 INFO L175 Difference]: Start difference. First operand has 301 places, 219 transitions, 1894 flow. Second operand 11 states and 133 transitions. [2024-06-14 11:51:49,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 234 transitions, 2434 flow [2024-06-14 11:51:49,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 234 transitions, 2230 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:49,996 INFO L231 Difference]: Finished difference. Result has 301 places, 214 transitions, 1706 flow [2024-06-14 11:51:49,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1690, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=301, PETRI_TRANSITIONS=214} [2024-06-14 11:51:49,997 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 11:51:49,997 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 214 transitions, 1706 flow [2024-06-14 11:51:49,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:49,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:49,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:49,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-14 11:51:49,998 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)] === [2024-06-14 11:51:49,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2000863877, now seen corresponding path program 30 times [2024-06-14 11:51:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:49,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441220420] [2024-06-14 11:51:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:49,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:51,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:51,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441220420] [2024-06-14 11:51:51,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441220420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:51,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:51,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:51,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462864222] [2024-06-14 11:51:51,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:51,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:51,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:51,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:51,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:51,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:51,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 214 transitions, 1706 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:51,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:52,061 INFO L124 PetriNetUnfolderBase]: 484/984 cut-off events. [2024-06-14 11:51:52,062 INFO L125 PetriNetUnfolderBase]: For 156462/156465 co-relation queries the response was YES. [2024-06-14 11:51:52,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 984 events. 484/984 cut-off events. For 156462/156465 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5603 event pairs, 78 based on Foata normal form. 2/981 useless extension candidates. Maximal degree in co-relation 6529. Up to 844 conditions per place. [2024-06-14 11:51:52,073 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 187 selfloop transitions, 37 changer transitions 0/227 dead transitions. [2024-06-14 11:51:52,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 227 transitions, 2240 flow [2024-06-14 11:51:52,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-14 11:51:52,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-14 11:51:52,074 INFO L175 Difference]: Start difference. First operand has 301 places, 214 transitions, 1706 flow. Second operand 11 states and 132 transitions. [2024-06-14 11:51:52,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 227 transitions, 2240 flow [2024-06-14 11:51:52,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 227 transitions, 2126 flow, removed 23 selfloop flow, removed 12 redundant places. [2024-06-14 11:51:52,648 INFO L231 Difference]: Finished difference. Result has 300 places, 215 transitions, 1730 flow [2024-06-14 11:51:52,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1730, PETRI_PLACES=300, PETRI_TRANSITIONS=215} [2024-06-14 11:51:52,648 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 269 predicate places. [2024-06-14 11:51:52,648 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 215 transitions, 1730 flow [2024-06-14 11:51:52,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:52,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:52,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:52,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-14 11:51:52,649 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)] === [2024-06-14 11:51:52,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:52,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1787384239, now seen corresponding path program 31 times [2024-06-14 11:51:52,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:52,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619799087] [2024-06-14 11:51:52,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:52,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:52,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:54,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:54,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:54,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619799087] [2024-06-14 11:51:54,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619799087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:54,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:54,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:54,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993887567] [2024-06-14 11:51:54,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:54,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:54,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:54,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:54,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:54,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:54,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 215 transitions, 1730 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:54,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:54,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:54,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:54,556 INFO L124 PetriNetUnfolderBase]: 510/1034 cut-off events. [2024-06-14 11:51:54,556 INFO L125 PetriNetUnfolderBase]: For 207766/207769 co-relation queries the response was YES. [2024-06-14 11:51:54,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7840 conditions, 1034 events. 510/1034 cut-off events. For 207766/207769 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5947 event pairs, 86 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7707. Up to 825 conditions per place. [2024-06-14 11:51:54,567 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 39 changer transitions 0/233 dead transitions. [2024-06-14 11:51:54,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 233 transitions, 2552 flow [2024-06-14 11:51:54,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-14 11:51:54,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-14 11:51:54,568 INFO L175 Difference]: Start difference. First operand has 300 places, 215 transitions, 1730 flow. Second operand 11 states and 137 transitions. [2024-06-14 11:51:54,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 233 transitions, 2552 flow [2024-06-14 11:51:55,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 233 transitions, 2424 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-14 11:51:55,260 INFO L231 Difference]: Finished difference. Result has 302 places, 216 transitions, 1744 flow [2024-06-14 11:51:55,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1744, PETRI_PLACES=302, PETRI_TRANSITIONS=216} [2024-06-14 11:51:55,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 11:51:55,261 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 216 transitions, 1744 flow [2024-06-14 11:51:55,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:55,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:55,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:55,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-14 11:51:55,261 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)] === [2024-06-14 11:51:55,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:55,262 INFO L85 PathProgramCache]: Analyzing trace with hash 2007119987, now seen corresponding path program 32 times [2024-06-14 11:51:55,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:55,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101148262] [2024-06-14 11:51:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:55,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:56,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:56,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101148262] [2024-06-14 11:51:56,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101148262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:56,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:56,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:51:56,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814786852] [2024-06-14 11:51:56,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:56,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:51:56,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:51:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:51:56,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:56,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 216 transitions, 1744 flow. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:56,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:56,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:56,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:51:57,377 INFO L124 PetriNetUnfolderBase]: 497/1015 cut-off events. [2024-06-14 11:51:57,377 INFO L125 PetriNetUnfolderBase]: For 197648/197651 co-relation queries the response was YES. [2024-06-14 11:51:57,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6523 conditions, 1015 events. 497/1015 cut-off events. For 197648/197651 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5846 event pairs, 81 based on Foata normal form. 10/1020 useless extension candidates. Maximal degree in co-relation 6389. Up to 843 conditions per place. [2024-06-14 11:51:57,387 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 189 selfloop transitions, 33 changer transitions 6/231 dead transitions. [2024-06-14 11:51:57,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 231 transitions, 2278 flow [2024-06-14 11:51:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:51:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:51:57,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:51:57,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:51:57,388 INFO L175 Difference]: Start difference. First operand has 302 places, 216 transitions, 1744 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:51:57,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 231 transitions, 2278 flow [2024-06-14 11:51:57,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 231 transitions, 2022 flow, removed 54 selfloop flow, removed 11 redundant places. [2024-06-14 11:51:57,883 INFO L231 Difference]: Finished difference. Result has 302 places, 213 transitions, 1538 flow [2024-06-14 11:51:57,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1538, PETRI_PLACES=302, PETRI_TRANSITIONS=213} [2024-06-14 11:51:57,884 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-14 11:51:57,884 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 213 transitions, 1538 flow [2024-06-14 11:51:57,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 12 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:57,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:51:57,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:51:57,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-14 11:51:57,884 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)] === [2024-06-14 11:51:57,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:51:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1977038995, now seen corresponding path program 14 times [2024-06-14 11:51:57,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:51:57,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627754869] [2024-06-14 11:51:57,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:51:57,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:51:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:51:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:51:59,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:51:59,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627754869] [2024-06-14 11:51:59,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627754869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:51:59,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:51:59,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:51:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377195387] [2024-06-14 11:51:59,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:51:59,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:51:59,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:51:59,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:51:59,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:51:59,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:51:59,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 213 transitions, 1538 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:51:59,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:51:59,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:51:59,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:00,356 INFO L124 PetriNetUnfolderBase]: 488/996 cut-off events. [2024-06-14 11:52:00,357 INFO L125 PetriNetUnfolderBase]: For 171215/171218 co-relation queries the response was YES. [2024-06-14 11:52:00,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6070 conditions, 996 events. 488/996 cut-off events. For 171215/171218 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5733 event pairs, 79 based on Foata normal form. 6/996 useless extension candidates. Maximal degree in co-relation 5938. Up to 624 conditions per place. [2024-06-14 11:52:00,366 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 71 changer transitions 6/230 dead transitions. [2024-06-14 11:52:00,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 230 transitions, 2330 flow [2024-06-14 11:52:00,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:00,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 11:52:00,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 11:52:00,367 INFO L175 Difference]: Start difference. First operand has 302 places, 213 transitions, 1538 flow. Second operand 12 states and 150 transitions. [2024-06-14 11:52:00,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 230 transitions, 2330 flow [2024-06-14 11:52:00,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 230 transitions, 2175 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 11:52:00,960 INFO L231 Difference]: Finished difference. Result has 301 places, 211 transitions, 1516 flow [2024-06-14 11:52:00,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1516, PETRI_PLACES=301, PETRI_TRANSITIONS=211} [2024-06-14 11:52:00,960 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-14 11:52:00,961 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 211 transitions, 1516 flow [2024-06-14 11:52:00,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:00,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:00,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-14 11:52:00,961 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)] === [2024-06-14 11:52:00,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash -349040911, now seen corresponding path program 15 times [2024-06-14 11:52:00,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:00,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130576887] [2024-06-14 11:52:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:00,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:02,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130576887] [2024-06-14 11:52:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130576887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:02,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:02,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340930984] [2024-06-14 11:52:02,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:02,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:02,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:02,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:02,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 211 transitions, 1516 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:02,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:02,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:02,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:03,358 INFO L124 PetriNetUnfolderBase]: 486/996 cut-off events. [2024-06-14 11:52:03,358 INFO L125 PetriNetUnfolderBase]: For 188690/188693 co-relation queries the response was YES. [2024-06-14 11:52:03,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6065 conditions, 996 events. 486/996 cut-off events. For 188690/188693 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5749 event pairs, 81 based on Foata normal form. 8/999 useless extension candidates. Maximal degree in co-relation 5933. Up to 804 conditions per place. [2024-06-14 11:52:03,368 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 172 selfloop transitions, 39 changer transitions 13/227 dead transitions. [2024-06-14 11:52:03,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 227 transitions, 2044 flow [2024-06-14 11:52:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:03,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:03,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:52:03,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 11:52:03,369 INFO L175 Difference]: Start difference. First operand has 301 places, 211 transitions, 1516 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:52:03,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 227 transitions, 2044 flow [2024-06-14 11:52:03,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 227 transitions, 1883 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 11:52:03,857 INFO L231 Difference]: Finished difference. Result has 298 places, 205 transitions, 1408 flow [2024-06-14 11:52:03,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1408, PETRI_PLACES=298, PETRI_TRANSITIONS=205} [2024-06-14 11:52:03,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 267 predicate places. [2024-06-14 11:52:03,858 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 205 transitions, 1408 flow [2024-06-14 11:52:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:03,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:03,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-14 11:52:03,858 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)] === [2024-06-14 11:52:03,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash -348801901, now seen corresponding path program 16 times [2024-06-14 11:52:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:03,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117157346] [2024-06-14 11:52:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:05,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:05,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117157346] [2024-06-14 11:52:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117157346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:05,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:05,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:52:05,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094738531] [2024-06-14 11:52:05,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:05,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:52:05,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:05,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:52:05,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:52:05,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:05,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 205 transitions, 1408 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:05,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:05,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:05,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:05,844 INFO L124 PetriNetUnfolderBase]: 470/970 cut-off events. [2024-06-14 11:52:05,844 INFO L125 PetriNetUnfolderBase]: For 170587/170590 co-relation queries the response was YES. [2024-06-14 11:52:05,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5824 conditions, 970 events. 470/970 cut-off events. For 170587/170590 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5532 event pairs, 77 based on Foata normal form. 6/971 useless extension candidates. Maximal degree in co-relation 5696. Up to 757 conditions per place. [2024-06-14 11:52:05,853 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 41 changer transitions 14/220 dead transitions. [2024-06-14 11:52:05,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 220 transitions, 1908 flow [2024-06-14 11:52:05,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:05,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:52:05,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:52:05,855 INFO L175 Difference]: Start difference. First operand has 298 places, 205 transitions, 1408 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:52:05,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 220 transitions, 1908 flow [2024-06-14 11:52:06,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 220 transitions, 1822 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:52:06,434 INFO L231 Difference]: Finished difference. Result has 291 places, 198 transitions, 1360 flow [2024-06-14 11:52:06,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1360, PETRI_PLACES=291, PETRI_TRANSITIONS=198} [2024-06-14 11:52:06,435 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-14 11:52:06,435 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 198 transitions, 1360 flow [2024-06-14 11:52:06,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:06,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:06,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:06,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-14 11:52:06,436 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)] === [2024-06-14 11:52:06,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:06,436 INFO L85 PathProgramCache]: Analyzing trace with hash -570446941, now seen corresponding path program 17 times [2024-06-14 11:52:06,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:06,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001384008] [2024-06-14 11:52:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:06,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:08,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:08,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:08,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001384008] [2024-06-14 11:52:08,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001384008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:08,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:08,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:08,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668397611] [2024-06-14 11:52:08,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:08,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:08,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:08,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:08,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:08,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 198 transitions, 1360 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:08,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:08,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:08,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:08,955 INFO L124 PetriNetUnfolderBase]: 477/983 cut-off events. [2024-06-14 11:52:08,956 INFO L125 PetriNetUnfolderBase]: For 206813/206816 co-relation queries the response was YES. [2024-06-14 11:52:08,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6737 conditions, 983 events. 477/983 cut-off events. For 206813/206816 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5632 event pairs, 87 based on Foata normal form. 6/984 useless extension candidates. Maximal degree in co-relation 6612. Up to 751 conditions per place. [2024-06-14 11:52:08,966 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 38 changer transitions 7/218 dead transitions. [2024-06-14 11:52:08,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 218 transitions, 2124 flow [2024-06-14 11:52:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 11:52:08,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-14 11:52:08,967 INFO L175 Difference]: Start difference. First operand has 291 places, 198 transitions, 1360 flow. Second operand 12 states and 148 transitions. [2024-06-14 11:52:08,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 218 transitions, 2124 flow [2024-06-14 11:52:09,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 218 transitions, 2024 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:09,694 INFO L231 Difference]: Finished difference. Result has 284 places, 195 transitions, 1331 flow [2024-06-14 11:52:09,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1266, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1331, PETRI_PLACES=284, PETRI_TRANSITIONS=195} [2024-06-14 11:52:09,695 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 253 predicate places. [2024-06-14 11:52:09,695 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 195 transitions, 1331 flow [2024-06-14 11:52:09,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:09,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:09,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:09,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-14 11:52:09,695 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)] === [2024-06-14 11:52:09,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1763728617, now seen corresponding path program 18 times [2024-06-14 11:52:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:09,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980813464] [2024-06-14 11:52:09,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:09,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:11,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:11,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:11,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980813464] [2024-06-14 11:52:11,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980813464] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:11,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:11,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:11,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448722649] [2024-06-14 11:52:11,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:11,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:11,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:11,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:11,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:11,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 195 transitions, 1331 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:11,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:11,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:11,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:11,959 INFO L124 PetriNetUnfolderBase]: 474/972 cut-off events. [2024-06-14 11:52:11,959 INFO L125 PetriNetUnfolderBase]: For 214638/214641 co-relation queries the response was YES. [2024-06-14 11:52:11,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 972 events. 474/972 cut-off events. For 214638/214641 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5554 event pairs, 95 based on Foata normal form. 8/974 useless extension candidates. Maximal degree in co-relation 6528. Up to 688 conditions per place. [2024-06-14 11:52:11,968 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 131 selfloop transitions, 64 changer transitions 10/208 dead transitions. [2024-06-14 11:52:11,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 208 transitions, 1807 flow [2024-06-14 11:52:11,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:11,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 11:52:11,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3802083333333333 [2024-06-14 11:52:11,969 INFO L175 Difference]: Start difference. First operand has 284 places, 195 transitions, 1331 flow. Second operand 12 states and 146 transitions. [2024-06-14 11:52:11,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 208 transitions, 1807 flow [2024-06-14 11:52:12,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 208 transitions, 1731 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:12,572 INFO L231 Difference]: Finished difference. Result has 282 places, 191 transitions, 1360 flow [2024-06-14 11:52:12,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1360, PETRI_PLACES=282, PETRI_TRANSITIONS=191} [2024-06-14 11:52:12,572 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-14 11:52:12,572 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 191 transitions, 1360 flow [2024-06-14 11:52:12,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:12,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:12,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:12,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-14 11:52:12,573 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)] === [2024-06-14 11:52:12,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash 89187875, now seen corresponding path program 19 times [2024-06-14 11:52:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:12,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429091568] [2024-06-14 11:52:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:12,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:14,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:14,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:14,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429091568] [2024-06-14 11:52:14,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429091568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:14,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:14,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:14,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780910359] [2024-06-14 11:52:14,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:14,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:14,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:14,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:14,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:14,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:14,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 191 transitions, 1360 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:14,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:14,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:14,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:15,291 INFO L124 PetriNetUnfolderBase]: 468/962 cut-off events. [2024-06-14 11:52:15,291 INFO L125 PetriNetUnfolderBase]: For 210721/210724 co-relation queries the response was YES. [2024-06-14 11:52:15,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6633 conditions, 962 events. 468/962 cut-off events. For 210721/210724 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5490 event pairs, 91 based on Foata normal form. 8/965 useless extension candidates. Maximal degree in co-relation 6511. Up to 646 conditions per place. [2024-06-14 11:52:15,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 76 changer transitions 7/207 dead transitions. [2024-06-14 11:52:15,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 207 transitions, 1844 flow [2024-06-14 11:52:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:15,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:15,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 11:52:15,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3984375 [2024-06-14 11:52:15,302 INFO L175 Difference]: Start difference. First operand has 282 places, 191 transitions, 1360 flow. Second operand 12 states and 153 transitions. [2024-06-14 11:52:15,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 207 transitions, 1844 flow [2024-06-14 11:52:15,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 207 transitions, 1705 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-06-14 11:52:15,963 INFO L231 Difference]: Finished difference. Result has 279 places, 188 transitions, 1360 flow [2024-06-14 11:52:15,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1360, PETRI_PLACES=279, PETRI_TRANSITIONS=188} [2024-06-14 11:52:15,964 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-14 11:52:15,964 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 188 transitions, 1360 flow [2024-06-14 11:52:15,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:15,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:15,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:15,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-14 11:52:15,965 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)] === [2024-06-14 11:52:15,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:15,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1720504221, now seen corresponding path program 20 times [2024-06-14 11:52:15,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:15,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035989313] [2024-06-14 11:52:15,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:15,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:18,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:18,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035989313] [2024-06-14 11:52:18,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035989313] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:18,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:18,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:18,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535734446] [2024-06-14 11:52:18,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:18,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:18,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:18,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:18,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:18,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 188 transitions, 1360 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:18,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:18,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:18,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:19,250 INFO L124 PetriNetUnfolderBase]: 456/946 cut-off events. [2024-06-14 11:52:19,263 INFO L125 PetriNetUnfolderBase]: For 199461/199464 co-relation queries the response was YES. [2024-06-14 11:52:19,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6302 conditions, 946 events. 456/946 cut-off events. For 199461/199464 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5382 event pairs, 94 based on Foata normal form. 8/949 useless extension candidates. Maximal degree in co-relation 6180. Up to 691 conditions per place. [2024-06-14 11:52:19,273 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 133 selfloop transitions, 59 changer transitions 9/204 dead transitions. [2024-06-14 11:52:19,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 204 transitions, 1838 flow [2024-06-14 11:52:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:19,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 11:52:19,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 11:52:19,274 INFO L175 Difference]: Start difference. First operand has 279 places, 188 transitions, 1360 flow. Second operand 12 states and 147 transitions. [2024-06-14 11:52:19,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 204 transitions, 1838 flow [2024-06-14 11:52:19,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 204 transitions, 1680 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:52:19,781 INFO L231 Difference]: Finished difference. Result has 277 places, 185 transitions, 1305 flow [2024-06-14 11:52:19,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1305, PETRI_PLACES=277, PETRI_TRANSITIONS=185} [2024-06-14 11:52:19,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 246 predicate places. [2024-06-14 11:52:19,782 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 185 transitions, 1305 flow [2024-06-14 11:52:19,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:19,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:19,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:19,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-14 11:52:19,783 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)] === [2024-06-14 11:52:19,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:19,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1956976251, now seen corresponding path program 21 times [2024-06-14 11:52:19,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:19,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559047068] [2024-06-14 11:52:19,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:19,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:21,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:21,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:21,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559047068] [2024-06-14 11:52:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559047068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:21,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:21,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:52:21,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85700812] [2024-06-14 11:52:21,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:21,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:52:21,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:52:21,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:52:21,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:21,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 185 transitions, 1305 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:21,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:21,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:21,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:21,607 INFO L124 PetriNetUnfolderBase]: 469/981 cut-off events. [2024-06-14 11:52:21,608 INFO L125 PetriNetUnfolderBase]: For 226665/226668 co-relation queries the response was YES. [2024-06-14 11:52:21,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7227 conditions, 981 events. 469/981 cut-off events. For 226665/226668 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5642 event pairs, 100 based on Foata normal form. 6/982 useless extension candidates. Maximal degree in co-relation 7106. Up to 526 conditions per place. [2024-06-14 11:52:21,617 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 127 selfloop transitions, 66 changer transitions 9/205 dead transitions. [2024-06-14 11:52:21,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 205 transitions, 2035 flow [2024-06-14 11:52:21,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:21,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:21,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 11:52:21,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-14 11:52:21,619 INFO L175 Difference]: Start difference. First operand has 277 places, 185 transitions, 1305 flow. Second operand 11 states and 147 transitions. [2024-06-14 11:52:21,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 205 transitions, 2035 flow [2024-06-14 11:52:22,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 205 transitions, 1909 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:22,270 INFO L231 Difference]: Finished difference. Result has 274 places, 182 transitions, 1302 flow [2024-06-14 11:52:22,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1302, PETRI_PLACES=274, PETRI_TRANSITIONS=182} [2024-06-14 11:52:22,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-14 11:52:22,271 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 182 transitions, 1302 flow [2024-06-14 11:52:22,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:22,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:22,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:22,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-14 11:52:22,272 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)] === [2024-06-14 11:52:22,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash -340470031, now seen corresponding path program 22 times [2024-06-14 11:52:22,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:22,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949911006] [2024-06-14 11:52:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:22,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:24,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:24,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:24,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949911006] [2024-06-14 11:52:24,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949911006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:24,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:24,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:24,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176044489] [2024-06-14 11:52:24,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:24,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:24,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:24,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:24,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:24,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:24,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 182 transitions, 1302 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:24,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:24,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:24,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:24,736 INFO L124 PetriNetUnfolderBase]: 481/1009 cut-off events. [2024-06-14 11:52:24,736 INFO L125 PetriNetUnfolderBase]: For 261233/261236 co-relation queries the response was YES. [2024-06-14 11:52:24,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8198 conditions, 1009 events. 481/1009 cut-off events. For 261233/261236 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5858 event pairs, 110 based on Foata normal form. 6/1010 useless extension candidates. Maximal degree in co-relation 8078. Up to 694 conditions per place. [2024-06-14 11:52:24,746 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 43 changer transitions 11/203 dead transitions. [2024-06-14 11:52:24,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 203 transitions, 2028 flow [2024-06-14 11:52:24,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 11:52:24,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-14 11:52:24,747 INFO L175 Difference]: Start difference. First operand has 274 places, 182 transitions, 1302 flow. Second operand 12 states and 147 transitions. [2024-06-14 11:52:24,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 203 transitions, 2028 flow [2024-06-14 11:52:25,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 203 transitions, 1893 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 11:52:25,646 INFO L231 Difference]: Finished difference. Result has 272 places, 177 transitions, 1238 flow [2024-06-14 11:52:25,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1238, PETRI_PLACES=272, PETRI_TRANSITIONS=177} [2024-06-14 11:52:25,647 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 241 predicate places. [2024-06-14 11:52:25,647 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 177 transitions, 1238 flow [2024-06-14 11:52:25,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:25,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:25,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:25,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-14 11:52:25,648 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)] === [2024-06-14 11:52:25,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:25,648 INFO L85 PathProgramCache]: Analyzing trace with hash -570685951, now seen corresponding path program 23 times [2024-06-14 11:52:25,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:25,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871683367] [2024-06-14 11:52:25,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:25,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:27,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:27,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:27,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871683367] [2024-06-14 11:52:27,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871683367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:27,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:27,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:27,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146237942] [2024-06-14 11:52:27,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:27,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:27,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:27,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:27,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:28,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:28,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 177 transitions, 1238 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:28,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:28,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:28,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:28,507 INFO L124 PetriNetUnfolderBase]: 473/989 cut-off events. [2024-06-14 11:52:28,507 INFO L125 PetriNetUnfolderBase]: For 262968/262971 co-relation queries the response was YES. [2024-06-14 11:52:28,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8040 conditions, 989 events. 473/989 cut-off events. For 262968/262971 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5734 event pairs, 114 based on Foata normal form. 8/992 useless extension candidates. Maximal degree in co-relation 7922. Up to 820 conditions per place. [2024-06-14 11:52:28,518 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 148 selfloop transitions, 33 changer transitions 9/193 dead transitions. [2024-06-14 11:52:28,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 193 transitions, 1694 flow [2024-06-14 11:52:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:52:28,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 11:52:28,520 INFO L175 Difference]: Start difference. First operand has 272 places, 177 transitions, 1238 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:52:28,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 193 transitions, 1694 flow [2024-06-14 11:52:29,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 193 transitions, 1607 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-14 11:52:29,421 INFO L231 Difference]: Finished difference. Result has 265 places, 174 transitions, 1200 flow [2024-06-14 11:52:29,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1200, PETRI_PLACES=265, PETRI_TRANSITIONS=174} [2024-06-14 11:52:29,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-14 11:52:29,421 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 174 transitions, 1200 flow [2024-06-14 11:52:29,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:29,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:29,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:29,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-14 11:52:29,422 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)] === [2024-06-14 11:52:29,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:29,422 INFO L85 PathProgramCache]: Analyzing trace with hash -576942061, now seen corresponding path program 24 times [2024-06-14 11:52:29,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:29,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160309144] [2024-06-14 11:52:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:29,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:32,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:32,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160309144] [2024-06-14 11:52:32,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160309144] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:32,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:32,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:32,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439739665] [2024-06-14 11:52:32,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:32,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:32,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:32,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:33,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:33,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 174 transitions, 1200 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:33,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:33,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:33,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:33,675 INFO L124 PetriNetUnfolderBase]: 446/936 cut-off events. [2024-06-14 11:52:33,676 INFO L125 PetriNetUnfolderBase]: For 206192/206195 co-relation queries the response was YES. [2024-06-14 11:52:33,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6828 conditions, 936 events. 446/936 cut-off events. For 206192/206195 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5341 event pairs, 102 based on Foata normal form. 8/939 useless extension candidates. Maximal degree in co-relation 6714. Up to 767 conditions per place. [2024-06-14 11:52:33,685 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 146 selfloop transitions, 32 changer transitions 9/190 dead transitions. [2024-06-14 11:52:33,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 190 transitions, 1650 flow [2024-06-14 11:52:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:33,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 11:52:33,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-14 11:52:33,686 INFO L175 Difference]: Start difference. First operand has 265 places, 174 transitions, 1200 flow. Second operand 12 states and 143 transitions. [2024-06-14 11:52:33,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 190 transitions, 1650 flow [2024-06-14 11:52:34,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 190 transitions, 1580 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:34,354 INFO L231 Difference]: Finished difference. Result has 263 places, 171 transitions, 1177 flow [2024-06-14 11:52:34,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1177, PETRI_PLACES=263, PETRI_TRANSITIONS=171} [2024-06-14 11:52:34,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-14 11:52:34,355 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 171 transitions, 1177 flow [2024-06-14 11:52:34,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:34,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:34,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:34,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-14 11:52:34,355 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)] === [2024-06-14 11:52:34,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:34,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1985143017, now seen corresponding path program 25 times [2024-06-14 11:52:34,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:34,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237421326] [2024-06-14 11:52:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:34,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:34,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:36,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:36,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237421326] [2024-06-14 11:52:36,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237421326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:36,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:36,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:36,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176293146] [2024-06-14 11:52:36,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:36,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:36,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:36,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:36,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:36,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:36,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 171 transitions, 1177 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:36,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:36,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:36,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:36,833 INFO L124 PetriNetUnfolderBase]: 441/929 cut-off events. [2024-06-14 11:52:36,833 INFO L125 PetriNetUnfolderBase]: For 201987/201990 co-relation queries the response was YES. [2024-06-14 11:52:36,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 929 events. 441/929 cut-off events. For 201987/201990 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5297 event pairs, 102 based on Foata normal form. 8/932 useless extension candidates. Maximal degree in co-relation 6642. Up to 667 conditions per place. [2024-06-14 11:52:36,839 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 50 changer transitions 13/187 dead transitions. [2024-06-14 11:52:36,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 187 transitions, 1621 flow [2024-06-14 11:52:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-14 11:52:36,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-14 11:52:36,840 INFO L175 Difference]: Start difference. First operand has 263 places, 171 transitions, 1177 flow. Second operand 12 states and 150 transitions. [2024-06-14 11:52:36,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 187 transitions, 1621 flow [2024-06-14 11:52:37,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 187 transitions, 1553 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:37,441 INFO L231 Difference]: Finished difference. Result has 260 places, 165 transitions, 1172 flow [2024-06-14 11:52:37,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1172, PETRI_PLACES=260, PETRI_TRANSITIONS=165} [2024-06-14 11:52:37,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-14 11:52:37,442 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 165 transitions, 1172 flow [2024-06-14 11:52:37,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:37,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:37,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:37,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-14 11:52:37,442 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)] === [2024-06-14 11:52:37,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1985373657, now seen corresponding path program 26 times [2024-06-14 11:52:37,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:37,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220486965] [2024-06-14 11:52:37,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:37,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:39,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:39,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220486965] [2024-06-14 11:52:39,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220486965] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:39,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:39,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:39,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167539168] [2024-06-14 11:52:39,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:39,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:39,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:39,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:39,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 165 transitions, 1172 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:39,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:39,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:39,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:40,408 INFO L124 PetriNetUnfolderBase]: 432/916 cut-off events. [2024-06-14 11:52:40,409 INFO L125 PetriNetUnfolderBase]: For 197830/197833 co-relation queries the response was YES. [2024-06-14 11:52:40,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 916 events. 432/916 cut-off events. For 197830/197833 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5207 event pairs, 108 based on Foata normal form. 8/918 useless extension candidates. Maximal degree in co-relation 6590. Up to 638 conditions per place. [2024-06-14 11:52:40,417 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 115 selfloop transitions, 53 changer transitions 9/180 dead transitions. [2024-06-14 11:52:40,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 180 transitions, 1606 flow [2024-06-14 11:52:40,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:40,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 11:52:40,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-14 11:52:40,418 INFO L175 Difference]: Start difference. First operand has 260 places, 165 transitions, 1172 flow. Second operand 12 states and 145 transitions. [2024-06-14 11:52:40,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 180 transitions, 1606 flow [2024-06-14 11:52:41,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 180 transitions, 1486 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 11:52:41,031 INFO L231 Difference]: Finished difference. Result has 255 places, 164 transitions, 1160 flow [2024-06-14 11:52:41,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1160, PETRI_PLACES=255, PETRI_TRANSITIONS=164} [2024-06-14 11:52:41,032 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 224 predicate places. [2024-06-14 11:52:41,032 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 164 transitions, 1160 flow [2024-06-14 11:52:41,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:41,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:41,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:41,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-14 11:52:41,033 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)] === [2024-06-14 11:52:41,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:41,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2000870821, now seen corresponding path program 27 times [2024-06-14 11:52:41,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:41,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765373359] [2024-06-14 11:52:41,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:41,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:41,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:43,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:43,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765373359] [2024-06-14 11:52:43,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765373359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:43,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:43,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:43,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099441420] [2024-06-14 11:52:43,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:43,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:43,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:44,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:44,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 164 transitions, 1160 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:44,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:44,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:44,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:44,636 INFO L124 PetriNetUnfolderBase]: 427/905 cut-off events. [2024-06-14 11:52:44,636 INFO L125 PetriNetUnfolderBase]: For 189685/189688 co-relation queries the response was YES. [2024-06-14 11:52:44,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6581 conditions, 905 events. 427/905 cut-off events. For 189685/189688 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5137 event pairs, 102 based on Foata normal form. 8/908 useless extension candidates. Maximal degree in co-relation 6471. Up to 756 conditions per place. [2024-06-14 11:52:44,644 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 140 selfloop transitions, 28 changer transitions 9/180 dead transitions. [2024-06-14 11:52:44,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 180 transitions, 1590 flow [2024-06-14 11:52:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:52:44,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:52:44,646 INFO L175 Difference]: Start difference. First operand has 255 places, 164 transitions, 1160 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:52:44,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 180 transitions, 1590 flow [2024-06-14 11:52:45,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 180 transitions, 1471 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 11:52:45,237 INFO L231 Difference]: Finished difference. Result has 253 places, 161 transitions, 1082 flow [2024-06-14 11:52:45,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1082, PETRI_PLACES=253, PETRI_TRANSITIONS=161} [2024-06-14 11:52:45,237 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-14 11:52:45,238 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 161 transitions, 1082 flow [2024-06-14 11:52:45,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:45,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:45,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:45,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-14 11:52:45,238 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)] === [2024-06-14 11:52:45,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:45,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2007126931, now seen corresponding path program 28 times [2024-06-14 11:52:45,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:45,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574568725] [2024-06-14 11:52:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:45,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:48,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:48,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:48,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574568725] [2024-06-14 11:52:48,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574568725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:48,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:48,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:48,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593689306] [2024-06-14 11:52:48,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:48,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:48,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:48,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:48,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:48,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:48,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 161 transitions, 1082 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:48,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:48,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:48,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:48,956 INFO L124 PetriNetUnfolderBase]: 415/885 cut-off events. [2024-06-14 11:52:48,957 INFO L125 PetriNetUnfolderBase]: For 180718/180721 co-relation queries the response was YES. [2024-06-14 11:52:48,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6257 conditions, 885 events. 415/885 cut-off events. For 180718/180721 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4987 event pairs, 101 based on Foata normal form. 8/888 useless extension candidates. Maximal degree in co-relation 6148. Up to 736 conditions per place. [2024-06-14 11:52:48,964 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 138 selfloop transitions, 27 changer transitions 9/177 dead transitions. [2024-06-14 11:52:48,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 177 transitions, 1506 flow [2024-06-14 11:52:48,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:48,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:48,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 11:52:48,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-14 11:52:48,965 INFO L175 Difference]: Start difference. First operand has 253 places, 161 transitions, 1082 flow. Second operand 12 states and 141 transitions. [2024-06-14 11:52:48,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 177 transitions, 1506 flow [2024-06-14 11:52:49,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 177 transitions, 1446 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:49,465 INFO L231 Difference]: Finished difference. Result has 251 places, 158 transitions, 1061 flow [2024-06-14 11:52:49,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1061, PETRI_PLACES=251, PETRI_TRANSITIONS=158} [2024-06-14 11:52:49,472 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-14 11:52:49,472 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 158 transitions, 1061 flow [2024-06-14 11:52:49,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:49,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:49,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:49,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-14 11:52:49,473 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)] === [2024-06-14 11:52:49,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:49,473 INFO L85 PathProgramCache]: Analyzing trace with hash 2007365941, now seen corresponding path program 29 times [2024-06-14 11:52:49,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:49,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89091367] [2024-06-14 11:52:49,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:49,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:51,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:51,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89091367] [2024-06-14 11:52:51,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89091367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:51,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:51,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:51,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110575875] [2024-06-14 11:52:51,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:51,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:51,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:51,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:51,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:51,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 158 transitions, 1061 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:51,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:51,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:51,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:51,693 INFO L124 PetriNetUnfolderBase]: 391/837 cut-off events. [2024-06-14 11:52:51,693 INFO L125 PetriNetUnfolderBase]: For 142836/142839 co-relation queries the response was YES. [2024-06-14 11:52:51,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5438 conditions, 837 events. 391/837 cut-off events. For 142836/142839 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4671 event pairs, 84 based on Foata normal form. 6/838 useless extension candidates. Maximal degree in co-relation 5330. Up to 690 conditions per place. [2024-06-14 11:52:51,701 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 136 selfloop transitions, 25 changer transitions 10/174 dead transitions. [2024-06-14 11:52:51,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 174 transitions, 1471 flow [2024-06-14 11:52:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-14 11:52:51,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-14 11:52:51,702 INFO L175 Difference]: Start difference. First operand has 251 places, 158 transitions, 1061 flow. Second operand 12 states and 139 transitions. [2024-06-14 11:52:51,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 174 transitions, 1471 flow [2024-06-14 11:52:52,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 174 transitions, 1413 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:52,192 INFO L231 Difference]: Finished difference. Result has 249 places, 155 transitions, 1039 flow [2024-06-14 11:52:52,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1039, PETRI_PLACES=249, PETRI_TRANSITIONS=155} [2024-06-14 11:52:52,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-14 11:52:52,194 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 155 transitions, 1039 flow [2024-06-14 11:52:52,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:52,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:52,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:52,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-14 11:52:52,195 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)] === [2024-06-14 11:52:52,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash 319107125, now seen corresponding path program 30 times [2024-06-14 11:52:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:52,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138905052] [2024-06-14 11:52:52,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:52,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:53,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:53,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138905052] [2024-06-14 11:52:53,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138905052] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:53,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:53,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:53,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038592916] [2024-06-14 11:52:53,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:53,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:53,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:53,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:53,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:54,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:54,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 155 transitions, 1039 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:54,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:54,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:54,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:54,502 INFO L124 PetriNetUnfolderBase]: 381/819 cut-off events. [2024-06-14 11:52:54,503 INFO L125 PetriNetUnfolderBase]: For 141036/141039 co-relation queries the response was YES. [2024-06-14 11:52:54,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5161 conditions, 819 events. 381/819 cut-off events. For 141036/141039 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4561 event pairs, 89 based on Foata normal form. 8/822 useless extension candidates. Maximal degree in co-relation 5054. Up to 563 conditions per place. [2024-06-14 11:52:54,510 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 110 selfloop transitions, 50 changer transitions 9/172 dead transitions. [2024-06-14 11:52:54,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 172 transitions, 1455 flow [2024-06-14 11:52:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:52:54,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:52:54,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 157 transitions. [2024-06-14 11:52:54,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37740384615384615 [2024-06-14 11:52:54,511 INFO L175 Difference]: Start difference. First operand has 249 places, 155 transitions, 1039 flow. Second operand 13 states and 157 transitions. [2024-06-14 11:52:54,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 172 transitions, 1455 flow [2024-06-14 11:52:54,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 172 transitions, 1399 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:54,916 INFO L231 Difference]: Finished difference. Result has 245 places, 152 transitions, 1068 flow [2024-06-14 11:52:54,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1068, PETRI_PLACES=245, PETRI_TRANSITIONS=152} [2024-06-14 11:52:54,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-14 11:52:54,916 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 152 transitions, 1068 flow [2024-06-14 11:52:54,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:54,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:54,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:54,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-14 11:52:54,917 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)] === [2024-06-14 11:52:54,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:54,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1993425597, now seen corresponding path program 31 times [2024-06-14 11:52:54,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:54,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831669616] [2024-06-14 11:52:54,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:54,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:56,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831669616] [2024-06-14 11:52:56,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831669616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:56,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:56,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:52:56,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348850842] [2024-06-14 11:52:56,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:56,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:52:56,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:52:56,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:52:56,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:56,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 152 transitions, 1068 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:56,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:56,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:56,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:56,925 INFO L124 PetriNetUnfolderBase]: 372/806 cut-off events. [2024-06-14 11:52:56,925 INFO L125 PetriNetUnfolderBase]: For 125613/125616 co-relation queries the response was YES. [2024-06-14 11:52:56,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5097 conditions, 806 events. 372/806 cut-off events. For 125613/125616 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4469 event pairs, 85 based on Foata normal form. 6/807 useless extension candidates. Maximal degree in co-relation 4992. Up to 532 conditions per place. [2024-06-14 11:52:56,931 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 103 selfloop transitions, 51 changer transitions 11/168 dead transitions. [2024-06-14 11:52:56,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 168 transitions, 1466 flow [2024-06-14 11:52:56,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:52:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:52:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 11:52:56,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-14 11:52:56,933 INFO L175 Difference]: Start difference. First operand has 245 places, 152 transitions, 1068 flow. Second operand 12 states and 149 transitions. [2024-06-14 11:52:56,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 168 transitions, 1466 flow [2024-06-14 11:52:57,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 168 transitions, 1362 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-14 11:52:57,278 INFO L231 Difference]: Finished difference. Result has 242 places, 148 transitions, 1044 flow [2024-06-14 11:52:57,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1044, PETRI_PLACES=242, PETRI_TRANSITIONS=148} [2024-06-14 11:52:57,278 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-14 11:52:57,279 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 148 transitions, 1044 flow [2024-06-14 11:52:57,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:57,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:57,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:57,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-14 11:52:57,279 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)] === [2024-06-14 11:52:57,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash 514221349, now seen corresponding path program 32 times [2024-06-14 11:52:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240893233] [2024-06-14 11:52:57,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:57,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:52:58,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:52:58,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:52:58,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240893233] [2024-06-14 11:52:58,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240893233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:52:58,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:52:58,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:52:58,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147172941] [2024-06-14 11:52:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:52:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:52:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:52:58,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:52:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:52:58,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:52:58,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 148 transitions, 1044 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:58,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:52:58,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:52:58,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:52:59,089 INFO L124 PetriNetUnfolderBase]: 349/753 cut-off events. [2024-06-14 11:52:59,090 INFO L125 PetriNetUnfolderBase]: For 100904/100907 co-relation queries the response was YES. [2024-06-14 11:52:59,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4316 conditions, 753 events. 349/753 cut-off events. For 100904/100907 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4088 event pairs, 72 based on Foata normal form. 6/754 useless extension candidates. Maximal degree in co-relation 4212. Up to 489 conditions per place. [2024-06-14 11:52:59,097 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 100 selfloop transitions, 48 changer transitions 12/163 dead transitions. [2024-06-14 11:52:59,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 163 transitions, 1430 flow [2024-06-14 11:52:59,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:52:59,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:52:59,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-14 11:52:59,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39488636363636365 [2024-06-14 11:52:59,099 INFO L175 Difference]: Start difference. First operand has 242 places, 148 transitions, 1044 flow. Second operand 11 states and 139 transitions. [2024-06-14 11:52:59,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 163 transitions, 1430 flow [2024-06-14 11:52:59,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 163 transitions, 1320 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:52:59,333 INFO L231 Difference]: Finished difference. Result has 236 places, 143 transitions, 1010 flow [2024-06-14 11:52:59,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1010, PETRI_PLACES=236, PETRI_TRANSITIONS=143} [2024-06-14 11:52:59,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-14 11:52:59,334 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 143 transitions, 1010 flow [2024-06-14 11:52:59,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:52:59,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:52:59,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:52:59,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-14 11:52:59,334 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)] === [2024-06-14 11:52:59,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:52:59,335 INFO L85 PathProgramCache]: Analyzing trace with hash -549230907, now seen corresponding path program 33 times [2024-06-14 11:52:59,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:52:59,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194120434] [2024-06-14 11:52:59,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:52:59,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:52:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:01,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:01,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:01,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194120434] [2024-06-14 11:53:01,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194120434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:01,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:01,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:01,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252281982] [2024-06-14 11:53:01,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:01,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:01,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:01,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:01,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:01,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:01,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 143 transitions, 1010 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:01,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:01,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:01,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:01,911 INFO L124 PetriNetUnfolderBase]: 344/741 cut-off events. [2024-06-14 11:53:01,911 INFO L125 PetriNetUnfolderBase]: For 108084/108084 co-relation queries the response was YES. [2024-06-14 11:53:01,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 741 events. 344/741 cut-off events. For 108084/108084 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3983 event pairs, 73 based on Foata normal form. 8/747 useless extension candidates. Maximal degree in co-relation 4135. Up to 644 conditions per place. [2024-06-14 11:53:01,917 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 132 selfloop transitions, 15 changer transitions 9/159 dead transitions. [2024-06-14 11:53:01,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 159 transitions, 1396 flow [2024-06-14 11:53:01,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:01,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 11:53:01,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 11:53:01,918 INFO L175 Difference]: Start difference. First operand has 236 places, 143 transitions, 1010 flow. Second operand 12 states and 137 transitions. [2024-06-14 11:53:01,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 159 transitions, 1396 flow [2024-06-14 11:53:02,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 159 transitions, 1292 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:02,166 INFO L231 Difference]: Finished difference. Result has 230 places, 140 transitions, 923 flow [2024-06-14 11:53:02,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=923, PETRI_PLACES=230, PETRI_TRANSITIONS=140} [2024-06-14 11:53:02,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 199 predicate places. [2024-06-14 11:53:02,166 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 140 transitions, 923 flow [2024-06-14 11:53:02,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:02,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:02,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:02,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-14 11:53:02,167 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)] === [2024-06-14 11:53:02,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash -585859949, now seen corresponding path program 34 times [2024-06-14 11:53:02,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:02,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9511076] [2024-06-14 11:53:02,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:02,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:03,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:03,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9511076] [2024-06-14 11:53:03,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9511076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:03,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:03,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:03,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38447084] [2024-06-14 11:53:03,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:03,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:03,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:03,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:03,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:03,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:03,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 140 transitions, 923 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:03,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:03,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:03,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:04,118 INFO L124 PetriNetUnfolderBase]: 350/763 cut-off events. [2024-06-14 11:53:04,118 INFO L125 PetriNetUnfolderBase]: For 113704/113704 co-relation queries the response was YES. [2024-06-14 11:53:04,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 763 events. 350/763 cut-off events. For 113704/113704 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4156 event pairs, 82 based on Foata normal form. 6/767 useless extension candidates. Maximal degree in co-relation 4551. Up to 594 conditions per place. [2024-06-14 11:53:04,125 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 128 selfloop transitions, 15 changer transitions 12/158 dead transitions. [2024-06-14 11:53:04,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 158 transitions, 1481 flow [2024-06-14 11:53:04,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:04,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:04,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-14 11:53:04,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-14 11:53:04,126 INFO L175 Difference]: Start difference. First operand has 230 places, 140 transitions, 923 flow. Second operand 11 states and 134 transitions. [2024-06-14 11:53:04,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 158 transitions, 1481 flow [2024-06-14 11:53:04,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 158 transitions, 1443 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:04,386 INFO L231 Difference]: Finished difference. Result has 227 places, 132 transitions, 865 flow [2024-06-14 11:53:04,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=889, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=865, PETRI_PLACES=227, PETRI_TRANSITIONS=132} [2024-06-14 11:53:04,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-14 11:53:04,386 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 132 transitions, 865 flow [2024-06-14 11:53:04,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:04,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:04,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:04,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-14 11:53:04,387 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)] === [2024-06-14 11:53:04,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:04,387 INFO L85 PathProgramCache]: Analyzing trace with hash -577528079, now seen corresponding path program 35 times [2024-06-14 11:53:04,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:04,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230580254] [2024-06-14 11:53:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:04,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:06,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:06,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:06,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230580254] [2024-06-14 11:53:06,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230580254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:06,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:06,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:06,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45675439] [2024-06-14 11:53:06,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:06,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:06,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:06,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:06,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:06,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 132 transitions, 865 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:06,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:06,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:06,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:06,726 INFO L124 PetriNetUnfolderBase]: 337/740 cut-off events. [2024-06-14 11:53:06,727 INFO L125 PetriNetUnfolderBase]: For 111020/111020 co-relation queries the response was YES. [2024-06-14 11:53:06,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4527 conditions, 740 events. 337/740 cut-off events. For 111020/111020 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4028 event pairs, 82 based on Foata normal form. 6/744 useless extension candidates. Maximal degree in co-relation 4429. Up to 633 conditions per place. [2024-06-14 11:53:06,732 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 123 selfloop transitions, 11 changer transitions 13/150 dead transitions. [2024-06-14 11:53:06,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 150 transitions, 1232 flow [2024-06-14 11:53:06,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:06,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:06,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-14 11:53:06,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-14 11:53:06,733 INFO L175 Difference]: Start difference. First operand has 227 places, 132 transitions, 865 flow. Second operand 12 states and 137 transitions. [2024-06-14 11:53:06,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 150 transitions, 1232 flow [2024-06-14 11:53:07,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 150 transitions, 1183 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-14 11:53:07,023 INFO L231 Difference]: Finished difference. Result has 222 places, 129 transitions, 824 flow [2024-06-14 11:53:07,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=824, PETRI_PLACES=222, PETRI_TRANSITIONS=129} [2024-06-14 11:53:07,023 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-14 11:53:07,023 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 129 transitions, 824 flow [2024-06-14 11:53:07,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:07,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:07,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:07,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-14 11:53:07,024 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)] === [2024-06-14 11:53:07,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash 557213459, now seen corresponding path program 36 times [2024-06-14 11:53:07,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:07,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225443084] [2024-06-14 11:53:07,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:07,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:08,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:08,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225443084] [2024-06-14 11:53:08,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225443084] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:08,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:08,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:08,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749309772] [2024-06-14 11:53:08,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:08,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:08,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:08,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:08,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 129 transitions, 824 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:08,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:08,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:08,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:09,105 INFO L124 PetriNetUnfolderBase]: 326/719 cut-off events. [2024-06-14 11:53:09,105 INFO L125 PetriNetUnfolderBase]: For 108368/108368 co-relation queries the response was YES. [2024-06-14 11:53:09,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4411 conditions, 719 events. 326/719 cut-off events. For 108368/108368 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3885 event pairs, 80 based on Foata normal form. 6/723 useless extension candidates. Maximal degree in co-relation 4314. Up to 609 conditions per place. [2024-06-14 11:53:09,110 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 12 changer transitions 13/147 dead transitions. [2024-06-14 11:53:09,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 147 transitions, 1184 flow [2024-06-14 11:53:09,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:53:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:53:09,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 146 transitions. [2024-06-14 11:53:09,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35096153846153844 [2024-06-14 11:53:09,111 INFO L175 Difference]: Start difference. First operand has 222 places, 129 transitions, 824 flow. Second operand 13 states and 146 transitions. [2024-06-14 11:53:09,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 147 transitions, 1184 flow [2024-06-14 11:53:09,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 147 transitions, 1152 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:09,332 INFO L231 Difference]: Finished difference. Result has 218 places, 125 transitions, 799 flow [2024-06-14 11:53:09,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=799, PETRI_PLACES=218, PETRI_TRANSITIONS=125} [2024-06-14 11:53:09,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-14 11:53:09,333 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 125 transitions, 799 flow [2024-06-14 11:53:09,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:09,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:09,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:53:09,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-14 11:53:09,334 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)] === [2024-06-14 11:53:09,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:09,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1420537405, now seen corresponding path program 37 times [2024-06-14 11:53:09,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:09,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55562111] [2024-06-14 11:53:09,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:09,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:11,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:11,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:11,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55562111] [2024-06-14 11:53:11,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55562111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:11,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:11,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:11,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432540429] [2024-06-14 11:53:11,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:11,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:11,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:11,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:11,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:11,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 125 transitions, 799 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:11,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:11,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:11,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:12,119 INFO L124 PetriNetUnfolderBase]: 308/681 cut-off events. [2024-06-14 11:53:12,119 INFO L125 PetriNetUnfolderBase]: For 98566/98566 co-relation queries the response was YES. [2024-06-14 11:53:12,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4026 conditions, 681 events. 308/681 cut-off events. For 98566/98566 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3579 event pairs, 73 based on Foata normal form. 6/685 useless extension candidates. Maximal degree in co-relation 3932. Up to 570 conditions per place. [2024-06-14 11:53:12,124 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 114 selfloop transitions, 10 changer transitions 16/143 dead transitions. [2024-06-14 11:53:12,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 143 transitions, 1119 flow [2024-06-14 11:53:12,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 11:53:12,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 11:53:12,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-14 11:53:12,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-14 11:53:12,125 INFO L175 Difference]: Start difference. First operand has 218 places, 125 transitions, 799 flow. Second operand 13 states and 145 transitions. [2024-06-14 11:53:12,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 143 transitions, 1119 flow [2024-06-14 11:53:12,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 143 transitions, 1073 flow, removed 11 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:12,275 INFO L231 Difference]: Finished difference. Result has 212 places, 119 transitions, 733 flow [2024-06-14 11:53:12,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=733, PETRI_PLACES=212, PETRI_TRANSITIONS=119} [2024-06-14 11:53:12,276 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-14 11:53:12,276 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 119 transitions, 733 flow [2024-06-14 11:53:12,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:12,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:12,276 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] [2024-06-14 11:53:12,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-14 11:53:12,276 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)] === [2024-06-14 11:53:12,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:12,277 INFO L85 PathProgramCache]: Analyzing trace with hash 235228296, now seen corresponding path program 1 times [2024-06-14 11:53:12,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:12,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129228992] [2024-06-14 11:53:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:12,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:13,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:13,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129228992] [2024-06-14 11:53:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129228992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:13,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:13,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:13,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864219742] [2024-06-14 11:53:13,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:13,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:13,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:13,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:13,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:13,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:13,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 119 transitions, 733 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:13,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:13,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:13,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:14,300 INFO L124 PetriNetUnfolderBase]: 293/648 cut-off events. [2024-06-14 11:53:14,301 INFO L125 PetriNetUnfolderBase]: For 92740/92740 co-relation queries the response was YES. [2024-06-14 11:53:14,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 648 events. 293/648 cut-off events. For 92740/92740 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3339 event pairs, 66 based on Foata normal form. 6/652 useless extension candidates. Maximal degree in co-relation 3722. Up to 517 conditions per place. [2024-06-14 11:53:14,305 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 109 selfloop transitions, 16 changer transitions 12/140 dead transitions. [2024-06-14 11:53:14,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 140 transitions, 1067 flow [2024-06-14 11:53:14,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:14,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-14 11:53:14,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-14 11:53:14,306 INFO L175 Difference]: Start difference. First operand has 212 places, 119 transitions, 733 flow. Second operand 11 states and 131 transitions. [2024-06-14 11:53:14,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 140 transitions, 1067 flow [2024-06-14 11:53:14,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 140 transitions, 1014 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:14,440 INFO L231 Difference]: Finished difference. Result has 202 places, 115 transitions, 699 flow [2024-06-14 11:53:14,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=699, PETRI_PLACES=202, PETRI_TRANSITIONS=115} [2024-06-14 11:53:14,440 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-14 11:53:14,440 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 115 transitions, 699 flow [2024-06-14 11:53:14,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:14,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:14,441 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] [2024-06-14 11:53:14,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-14 11:53:14,441 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)] === [2024-06-14 11:53:14,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:14,441 INFO L85 PathProgramCache]: Analyzing trace with hash 382837896, now seen corresponding path program 2 times [2024-06-14 11:53:14,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:14,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225305237] [2024-06-14 11:53:14,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:14,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:16,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:16,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225305237] [2024-06-14 11:53:16,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225305237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:16,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:16,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:16,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462613387] [2024-06-14 11:53:16,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:16,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:16,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:16,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:16,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:16,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 115 transitions, 699 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:16,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:16,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:16,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:16,764 INFO L124 PetriNetUnfolderBase]: 279/622 cut-off events. [2024-06-14 11:53:16,765 INFO L125 PetriNetUnfolderBase]: For 85781/85781 co-relation queries the response was YES. [2024-06-14 11:53:16,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 622 events. 279/622 cut-off events. For 85781/85781 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3167 event pairs, 66 based on Foata normal form. 6/626 useless extension candidates. Maximal degree in co-relation 3530. Up to 501 conditions per place. [2024-06-14 11:53:16,770 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 17 changer transitions 10/136 dead transitions. [2024-06-14 11:53:16,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 136 transitions, 1023 flow [2024-06-14 11:53:16,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:16,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:16,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 11:53:16,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-14 11:53:16,771 INFO L175 Difference]: Start difference. First operand has 202 places, 115 transitions, 699 flow. Second operand 12 states and 138 transitions. [2024-06-14 11:53:16,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 136 transitions, 1023 flow [2024-06-14 11:53:16,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 136 transitions, 983 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:16,907 INFO L231 Difference]: Finished difference. Result has 197 places, 112 transitions, 682 flow [2024-06-14 11:53:16,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=682, PETRI_PLACES=197, PETRI_TRANSITIONS=112} [2024-06-14 11:53:16,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-14 11:53:16,907 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 112 transitions, 682 flow [2024-06-14 11:53:16,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:16,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:16,908 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] [2024-06-14 11:53:16,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-14 11:53:16,908 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)] === [2024-06-14 11:53:16,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash 377331366, now seen corresponding path program 3 times [2024-06-14 11:53:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962892691] [2024-06-14 11:53:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:16,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:16,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:18,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:18,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:18,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962892691] [2024-06-14 11:53:18,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962892691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:18,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:18,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 11:53:18,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426889306] [2024-06-14 11:53:18,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:18,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 11:53:18,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:18,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 11:53:18,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 11:53:18,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:18,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 112 transitions, 682 flow. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:18,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:18,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:18,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:18,522 INFO L124 PetriNetUnfolderBase]: 272/609 cut-off events. [2024-06-14 11:53:18,522 INFO L125 PetriNetUnfolderBase]: For 79119/79119 co-relation queries the response was YES. [2024-06-14 11:53:18,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 609 events. 272/609 cut-off events. For 79119/79119 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3082 event pairs, 64 based on Foata normal form. 6/613 useless extension candidates. Maximal degree in co-relation 3424. Up to 483 conditions per place. [2024-06-14 11:53:18,526 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 98 selfloop transitions, 11 changer transitions 20/132 dead transitions. [2024-06-14 11:53:18,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 132 transitions, 996 flow [2024-06-14 11:53:18,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-14 11:53:18,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3664772727272727 [2024-06-14 11:53:18,527 INFO L175 Difference]: Start difference. First operand has 197 places, 112 transitions, 682 flow. Second operand 11 states and 129 transitions. [2024-06-14 11:53:18,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 132 transitions, 996 flow [2024-06-14 11:53:18,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 132 transitions, 956 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:18,639 INFO L231 Difference]: Finished difference. Result has 192 places, 104 transitions, 630 flow [2024-06-14 11:53:18,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=630, PETRI_PLACES=192, PETRI_TRANSITIONS=104} [2024-06-14 11:53:18,640 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-14 11:53:18,640 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 104 transitions, 630 flow [2024-06-14 11:53:18,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 12 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:18,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:18,640 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] [2024-06-14 11:53:18,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-14 11:53:18,640 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)] === [2024-06-14 11:53:18,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1737495168, now seen corresponding path program 4 times [2024-06-14 11:53:18,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:18,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510886222] [2024-06-14 11:53:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:18,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:20,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:20,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510886222] [2024-06-14 11:53:20,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510886222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:20,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:20,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:20,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057649165] [2024-06-14 11:53:20,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:20,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:20,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:20,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:20,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 104 transitions, 630 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:20,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:20,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:20,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:21,130 INFO L124 PetriNetUnfolderBase]: 250/565 cut-off events. [2024-06-14 11:53:21,130 INFO L125 PetriNetUnfolderBase]: For 74816/74816 co-relation queries the response was YES. [2024-06-14 11:53:21,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 565 events. 250/565 cut-off events. For 74816/74816 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2821 event pairs, 64 based on Foata normal form. 6/569 useless extension candidates. Maximal degree in co-relation 3238. Up to 454 conditions per place. [2024-06-14 11:53:21,134 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 94 selfloop transitions, 15 changer transitions 10/122 dead transitions. [2024-06-14 11:53:21,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 122 transitions, 916 flow [2024-06-14 11:53:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:21,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 11:53:21,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 11:53:21,135 INFO L175 Difference]: Start difference. First operand has 192 places, 104 transitions, 630 flow. Second operand 12 states and 134 transitions. [2024-06-14 11:53:21,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 122 transitions, 916 flow [2024-06-14 11:53:21,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 122 transitions, 884 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 11:53:21,230 INFO L231 Difference]: Finished difference. Result has 184 places, 101 transitions, 617 flow [2024-06-14 11:53:21,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=617, PETRI_PLACES=184, PETRI_TRANSITIONS=101} [2024-06-14 11:53:21,230 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-14 11:53:21,231 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 101 transitions, 617 flow [2024-06-14 11:53:21,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:21,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:21,231 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] [2024-06-14 11:53:21,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-14 11:53:21,231 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)] === [2024-06-14 11:53:21,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:21,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1737639318, now seen corresponding path program 5 times [2024-06-14 11:53:21,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:21,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304637005] [2024-06-14 11:53:21,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:21,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:23,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:23,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304637005] [2024-06-14 11:53:23,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304637005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:23,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:23,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712159970] [2024-06-14 11:53:23,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:23,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:23,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:23,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:23,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 101 transitions, 617 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:23,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:23,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:23,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:23,751 INFO L124 PetriNetUnfolderBase]: 243/552 cut-off events. [2024-06-14 11:53:23,751 INFO L125 PetriNetUnfolderBase]: For 66600/66600 co-relation queries the response was YES. [2024-06-14 11:53:23,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3192 conditions, 552 events. 243/552 cut-off events. For 66600/66600 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2733 event pairs, 62 based on Foata normal form. 6/556 useless extension candidates. Maximal degree in co-relation 3114. Up to 436 conditions per place. [2024-06-14 11:53:23,754 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 85 selfloop transitions, 6 changer transitions 26/120 dead transitions. [2024-06-14 11:53:23,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 120 transitions, 901 flow [2024-06-14 11:53:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-14 11:53:23,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-14 11:53:23,755 INFO L175 Difference]: Start difference. First operand has 184 places, 101 transitions, 617 flow. Second operand 12 states and 134 transitions. [2024-06-14 11:53:23,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 120 transitions, 901 flow [2024-06-14 11:53:23,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 120 transitions, 865 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:23,841 INFO L231 Difference]: Finished difference. Result has 180 places, 90 transitions, 530 flow [2024-06-14 11:53:23,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=530, PETRI_PLACES=180, PETRI_TRANSITIONS=90} [2024-06-14 11:53:23,841 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-06-14 11:53:23,841 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 90 transitions, 530 flow [2024-06-14 11:53:23,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:23,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:23,842 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] [2024-06-14 11:53:23,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-14 11:53:23,842 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)] === [2024-06-14 11:53:23,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:23,842 INFO L85 PathProgramCache]: Analyzing trace with hash -261516250, now seen corresponding path program 6 times [2024-06-14 11:53:23,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:23,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161896820] [2024-06-14 11:53:23,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:23,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:25,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:25,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161896820] [2024-06-14 11:53:25,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161896820] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:25,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:25,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:25,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103639660] [2024-06-14 11:53:25,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:25,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:25,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:25,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:25,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:25,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:25,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 90 transitions, 530 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:25,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:25,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:25,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:26,124 INFO L124 PetriNetUnfolderBase]: 220/499 cut-off events. [2024-06-14 11:53:26,124 INFO L125 PetriNetUnfolderBase]: For 62601/62601 co-relation queries the response was YES. [2024-06-14 11:53:26,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2954 conditions, 499 events. 220/499 cut-off events. For 62601/62601 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2416 event pairs, 62 based on Foata normal form. 6/503 useless extension candidates. Maximal degree in co-relation 2878. Up to 406 conditions per place. [2024-06-14 11:53:26,127 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 80 selfloop transitions, 10 changer transitions 12/105 dead transitions. [2024-06-14 11:53:26,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 105 transitions, 770 flow [2024-06-14 11:53:26,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:26,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:26,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 11:53:26,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:53:26,128 INFO L175 Difference]: Start difference. First operand has 180 places, 90 transitions, 530 flow. Second operand 12 states and 132 transitions. [2024-06-14 11:53:26,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 105 transitions, 770 flow [2024-06-14 11:53:26,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 105 transitions, 739 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-14 11:53:26,209 INFO L231 Difference]: Finished difference. Result has 164 places, 86 transitions, 503 flow [2024-06-14 11:53:26,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=499, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=503, PETRI_PLACES=164, PETRI_TRANSITIONS=86} [2024-06-14 11:53:26,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 133 predicate places. [2024-06-14 11:53:26,209 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 86 transitions, 503 flow [2024-06-14 11:53:26,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:26,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:26,209 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] [2024-06-14 11:53:26,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-14 11:53:26,210 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)] === [2024-06-14 11:53:26,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash -460962190, now seen corresponding path program 7 times [2024-06-14 11:53:26,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:26,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062380231] [2024-06-14 11:53:26,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:26,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:28,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:28,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062380231] [2024-06-14 11:53:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062380231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:28,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403428066] [2024-06-14 11:53:28,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:28,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:28,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:28,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:28,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:28,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:28,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 86 transitions, 503 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:28,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:28,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:28,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:28,581 INFO L124 PetriNetUnfolderBase]: 212/481 cut-off events. [2024-06-14 11:53:28,581 INFO L125 PetriNetUnfolderBase]: For 51522/51522 co-relation queries the response was YES. [2024-06-14 11:53:28,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 481 events. 212/481 cut-off events. For 51522/51522 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2305 event pairs, 60 based on Foata normal form. 6/485 useless extension candidates. Maximal degree in co-relation 2687. Up to 388 conditions per place. [2024-06-14 11:53:28,584 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 75 selfloop transitions, 7 changer transitions 17/102 dead transitions. [2024-06-14 11:53:28,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 102 transitions, 739 flow [2024-06-14 11:53:28,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:28,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:28,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-14 11:53:28,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3411458333333333 [2024-06-14 11:53:28,585 INFO L175 Difference]: Start difference. First operand has 164 places, 86 transitions, 503 flow. Second operand 12 states and 131 transitions. [2024-06-14 11:53:28,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 102 transitions, 739 flow [2024-06-14 11:53:28,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 102 transitions, 707 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:28,653 INFO L231 Difference]: Finished difference. Result has 158 places, 80 transitions, 463 flow [2024-06-14 11:53:28,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=463, PETRI_PLACES=158, PETRI_TRANSITIONS=80} [2024-06-14 11:53:28,653 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-14 11:53:28,653 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 80 transitions, 463 flow [2024-06-14 11:53:28,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:28,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:28,653 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] [2024-06-14 11:53:28,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-14 11:53:28,654 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)] === [2024-06-14 11:53:28,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:28,654 INFO L85 PathProgramCache]: Analyzing trace with hash -207996206, now seen corresponding path program 8 times [2024-06-14 11:53:28,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:28,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200682703] [2024-06-14 11:53:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:28,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:28,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:30,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:30,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200682703] [2024-06-14 11:53:30,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200682703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:30,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:30,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:30,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529482195] [2024-06-14 11:53:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:30,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:30,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:30,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:30,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 80 transitions, 463 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:30,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:30,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:30,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:31,116 INFO L124 PetriNetUnfolderBase]: 199/452 cut-off events. [2024-06-14 11:53:31,116 INFO L125 PetriNetUnfolderBase]: For 46912/46916 co-relation queries the response was YES. [2024-06-14 11:53:31,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 452 events. 199/452 cut-off events. For 46912/46916 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2121 event pairs, 66 based on Foata normal form. 10/460 useless extension candidates. Maximal degree in co-relation 2505. Up to 360 conditions per place. [2024-06-14 11:53:31,119 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 11 changer transitions 9/93 dead transitions. [2024-06-14 11:53:31,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 93 transitions, 673 flow [2024-06-14 11:53:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 11:53:31,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 11:53:31,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-14 11:53:31,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-14 11:53:31,120 INFO L175 Difference]: Start difference. First operand has 158 places, 80 transitions, 463 flow. Second operand 11 states and 123 transitions. [2024-06-14 11:53:31,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 93 transitions, 673 flow [2024-06-14 11:53:31,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 93 transitions, 647 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:31,171 INFO L231 Difference]: Finished difference. Result has 147 places, 76 transitions, 442 flow [2024-06-14 11:53:31,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=442, PETRI_PLACES=147, PETRI_TRANSITIONS=76} [2024-06-14 11:53:31,173 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-14 11:53:31,173 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 76 transitions, 442 flow [2024-06-14 11:53:31,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:31,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:31,173 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] [2024-06-14 11:53:31,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-14 11:53:31,174 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)] === [2024-06-14 11:53:31,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:31,174 INFO L85 PathProgramCache]: Analyzing trace with hash -401935616, now seen corresponding path program 9 times [2024-06-14 11:53:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266631986] [2024-06-14 11:53:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:31,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:33,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:33,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266631986] [2024-06-14 11:53:33,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266631986] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:33,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:33,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:33,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421198935] [2024-06-14 11:53:33,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:33,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:33,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:33,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:33,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:33,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:33,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 76 transitions, 442 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:33,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:33,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:33,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:34,271 INFO L124 PetriNetUnfolderBase]: 176/401 cut-off events. [2024-06-14 11:53:34,272 INFO L125 PetriNetUnfolderBase]: For 31168/31172 co-relation queries the response was YES. [2024-06-14 11:53:34,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2026 conditions, 401 events. 176/401 cut-off events. For 31168/31172 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1794 event pairs, 47 based on Foata normal form. 10/409 useless extension candidates. Maximal degree in co-relation 1965. Up to 317 conditions per place. [2024-06-14 11:53:34,274 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 10 changer transitions 10/91 dead transitions. [2024-06-14 11:53:34,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 91 transitions, 652 flow [2024-06-14 11:53:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:34,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:34,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 11:53:34,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 11:53:34,275 INFO L175 Difference]: Start difference. First operand has 147 places, 76 transitions, 442 flow. Second operand 12 states and 130 transitions. [2024-06-14 11:53:34,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 91 transitions, 652 flow [2024-06-14 11:53:34,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 91 transitions, 622 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:34,317 INFO L231 Difference]: Finished difference. Result has 142 places, 73 transitions, 420 flow [2024-06-14 11:53:34,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=420, PETRI_PLACES=142, PETRI_TRANSITIONS=73} [2024-06-14 11:53:34,318 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 111 predicate places. [2024-06-14 11:53:34,318 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 73 transitions, 420 flow [2024-06-14 11:53:34,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:34,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:34,318 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] [2024-06-14 11:53:34,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-14 11:53:34,318 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)] === [2024-06-14 11:53:34,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:34,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1231217092, now seen corresponding path program 10 times [2024-06-14 11:53:34,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:34,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688892305] [2024-06-14 11:53:34,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:34,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:36,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:36,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:36,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688892305] [2024-06-14 11:53:36,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688892305] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:36,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:36,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:36,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732342696] [2024-06-14 11:53:36,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:36,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:36,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:36,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:36,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:36,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:36,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 73 transitions, 420 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:36,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:36,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:36,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:36,780 INFO L124 PetriNetUnfolderBase]: 169/388 cut-off events. [2024-06-14 11:53:36,781 INFO L125 PetriNetUnfolderBase]: For 27602/27602 co-relation queries the response was YES. [2024-06-14 11:53:36,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1929 conditions, 388 events. 169/388 cut-off events. For 27602/27602 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1718 event pairs, 45 based on Foata normal form. 6/392 useless extension candidates. Maximal degree in co-relation 1871. Up to 299 conditions per place. [2024-06-14 11:53:36,783 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 58 selfloop transitions, 3 changer transitions 25/89 dead transitions. [2024-06-14 11:53:36,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 89 transitions, 628 flow [2024-06-14 11:53:36,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-14 11:53:36,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-14 11:53:36,784 INFO L175 Difference]: Start difference. First operand has 142 places, 73 transitions, 420 flow. Second operand 12 states and 130 transitions. [2024-06-14 11:53:36,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 89 transitions, 628 flow [2024-06-14 11:53:36,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 89 transitions, 602 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:36,823 INFO L231 Difference]: Finished difference. Result has 137 places, 63 transitions, 354 flow [2024-06-14 11:53:36,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=354, PETRI_PLACES=137, PETRI_TRANSITIONS=63} [2024-06-14 11:53:36,823 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-06-14 11:53:36,824 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 63 transitions, 354 flow [2024-06-14 11:53:36,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:36,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:36,824 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] [2024-06-14 11:53:36,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-14 11:53:36,824 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)] === [2024-06-14 11:53:36,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:36,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1166351232, now seen corresponding path program 11 times [2024-06-14 11:53:36,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:36,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889428707] [2024-06-14 11:53:36,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:36,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:38,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:38,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889428707] [2024-06-14 11:53:38,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889428707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:38,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:38,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:38,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711491128] [2024-06-14 11:53:38,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:38,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:38,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:38,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:38,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:38,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:38,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 63 transitions, 354 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:38,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:38,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:38,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:39,245 INFO L124 PetriNetUnfolderBase]: 150/342 cut-off events. [2024-06-14 11:53:39,245 INFO L125 PetriNetUnfolderBase]: For 25284/25288 co-relation queries the response was YES. [2024-06-14 11:53:39,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 342 events. 150/342 cut-off events. For 25284/25288 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1465 event pairs, 45 based on Foata normal form. 10/351 useless extension candidates. Maximal degree in co-relation 1692. Up to 214 conditions per place. [2024-06-14 11:53:39,247 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 42 selfloop transitions, 20 changer transitions 11/76 dead transitions. [2024-06-14 11:53:39,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 76 transitions, 528 flow [2024-06-14 11:53:39,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:39,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:39,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-14 11:53:39,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-14 11:53:39,248 INFO L175 Difference]: Start difference. First operand has 137 places, 63 transitions, 354 flow. Second operand 12 states and 129 transitions. [2024-06-14 11:53:39,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 76 transitions, 528 flow [2024-06-14 11:53:39,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 76 transitions, 502 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-14 11:53:39,271 INFO L231 Difference]: Finished difference. Result has 120 places, 59 transitions, 350 flow [2024-06-14 11:53:39,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=350, PETRI_PLACES=120, PETRI_TRANSITIONS=59} [2024-06-14 11:53:39,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-14 11:53:39,271 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 59 transitions, 350 flow [2024-06-14 11:53:39,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:39,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:39,271 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] [2024-06-14 11:53:39,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-14 11:53:39,272 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)] === [2024-06-14 11:53:39,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:39,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1724296252, now seen corresponding path program 12 times [2024-06-14 11:53:39,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:39,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200815756] [2024-06-14 11:53:39,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:39,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:41,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:41,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:41,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200815756] [2024-06-14 11:53:41,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200815756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:41,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:41,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:41,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643093498] [2024-06-14 11:53:41,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:41,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:41,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:41,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:41,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:41,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:41,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 59 transitions, 350 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:41,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:41,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:41,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:41,973 INFO L124 PetriNetUnfolderBase]: 127/291 cut-off events. [2024-06-14 11:53:41,973 INFO L125 PetriNetUnfolderBase]: For 13696/13700 co-relation queries the response was YES. [2024-06-14 11:53:41,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1288 conditions, 291 events. 127/291 cut-off events. For 13696/13700 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1175 event pairs, 32 based on Foata normal form. 10/300 useless extension candidates. Maximal degree in co-relation 1240. Up to 171 conditions per place. [2024-06-14 11:53:41,975 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 39 selfloop transitions, 20 changer transitions 10/72 dead transitions. [2024-06-14 11:53:41,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 72 transitions, 516 flow [2024-06-14 11:53:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-14 11:53:41,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-14 11:53:41,976 INFO L175 Difference]: Start difference. First operand has 120 places, 59 transitions, 350 flow. Second operand 12 states and 127 transitions. [2024-06-14 11:53:41,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 72 transitions, 516 flow [2024-06-14 11:53:41,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 72 transitions, 468 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:41,993 INFO L231 Difference]: Finished difference. Result has 114 places, 56 transitions, 329 flow [2024-06-14 11:53:41,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=329, PETRI_PLACES=114, PETRI_TRANSITIONS=56} [2024-06-14 11:53:41,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-14 11:53:41,993 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 56 transitions, 329 flow [2024-06-14 11:53:41,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:41,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:41,994 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] [2024-06-14 11:53:41,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-14 11:53:41,994 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)] === [2024-06-14 11:53:41,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:41,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1729802782, now seen corresponding path program 13 times [2024-06-14 11:53:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506000628] [2024-06-14 11:53:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:41,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:44,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:44,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:44,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506000628] [2024-06-14 11:53:44,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506000628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:44,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:44,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:44,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966434733] [2024-06-14 11:53:44,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:44,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:44,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:44,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:44,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:44,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:44,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 56 transitions, 329 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:44,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:44,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:44,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:44,630 INFO L124 PetriNetUnfolderBase]: 120/278 cut-off events. [2024-06-14 11:53:44,630 INFO L125 PetriNetUnfolderBase]: For 11704/11704 co-relation queries the response was YES. [2024-06-14 11:53:44,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 278 events. 120/278 cut-off events. For 11704/11704 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1092 event pairs, 28 based on Foata normal form. 6/283 useless extension candidates. Maximal degree in co-relation 1164. Up to 147 conditions per place. [2024-06-14 11:53:44,631 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 38 selfloop transitions, 17 changer transitions 12/70 dead transitions. [2024-06-14 11:53:44,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 70 transitions, 493 flow [2024-06-14 11:53:44,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:44,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-14 11:53:44,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-14 11:53:44,632 INFO L175 Difference]: Start difference. First operand has 114 places, 56 transitions, 329 flow. Second operand 12 states and 128 transitions. [2024-06-14 11:53:44,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 70 transitions, 493 flow [2024-06-14 11:53:44,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 70 transitions, 447 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:44,643 INFO L231 Difference]: Finished difference. Result has 108 places, 50 transitions, 292 flow [2024-06-14 11:53:44,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=292, PETRI_PLACES=108, PETRI_TRANSITIONS=50} [2024-06-14 11:53:44,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-06-14 11:53:44,643 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 50 transitions, 292 flow [2024-06-14 11:53:44,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:44,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:44,643 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] [2024-06-14 11:53:44,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-14 11:53:44,644 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)] === [2024-06-14 11:53:44,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash -511608968, now seen corresponding path program 14 times [2024-06-14 11:53:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:44,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290732623] [2024-06-14 11:53:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:44,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:46,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:46,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:46,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290732623] [2024-06-14 11:53:46,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290732623] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:46,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:46,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:46,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219842914] [2024-06-14 11:53:46,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:46,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:46,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:46,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:46,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:46,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:46,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 50 transitions, 292 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:46,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:46,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:46,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:47,005 INFO L124 PetriNetUnfolderBase]: 107/249 cut-off events. [2024-06-14 11:53:47,006 INFO L125 PetriNetUnfolderBase]: For 10398/10398 co-relation queries the response was YES. [2024-06-14 11:53:47,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 249 events. 107/249 cut-off events. For 10398/10398 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 938 event pairs, 30 based on Foata normal form. 6/254 useless extension candidates. Maximal degree in co-relation 1060. Up to 158 conditions per place. [2024-06-14 11:53:47,007 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 35 selfloop transitions, 14 changer transitions 11/63 dead transitions. [2024-06-14 11:53:47,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 63 transitions, 440 flow [2024-06-14 11:53:47,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:47,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-14 11:53:47,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-14 11:53:47,008 INFO L175 Difference]: Start difference. First operand has 108 places, 50 transitions, 292 flow. Second operand 12 states and 132 transitions. [2024-06-14 11:53:47,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 63 transitions, 440 flow [2024-06-14 11:53:47,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 63 transitions, 394 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-14 11:53:47,015 INFO L231 Difference]: Finished difference. Result has 98 places, 46 transitions, 258 flow [2024-06-14 11:53:47,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=258, PETRI_PLACES=98, PETRI_TRANSITIONS=46} [2024-06-14 11:53:47,015 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-14 11:53:47,016 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 46 transitions, 258 flow [2024-06-14 11:53:47,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:47,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:47,016 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] [2024-06-14 11:53:47,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-14 11:53:47,016 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)] === [2024-06-14 11:53:47,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash -989412216, now seen corresponding path program 15 times [2024-06-14 11:53:47,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:47,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013226767] [2024-06-14 11:53:47,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:49,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:49,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:49,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013226767] [2024-06-14 11:53:49,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013226767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:49,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:49,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:49,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226957859] [2024-06-14 11:53:49,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:49,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:49,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:49,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:49,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:49,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:49,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 46 transitions, 258 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:49,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:49,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:49,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:49,566 INFO L124 PetriNetUnfolderBase]: 84/198 cut-off events. [2024-06-14 11:53:49,566 INFO L125 PetriNetUnfolderBase]: For 5056/5056 co-relation queries the response was YES. [2024-06-14 11:53:49,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 198 events. 84/198 cut-off events. For 5056/5056 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 670 event pairs, 17 based on Foata normal form. 6/203 useless extension candidates. Maximal degree in co-relation 698. Up to 133 conditions per place. [2024-06-14 11:53:49,568 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 34 selfloop transitions, 4 changer transitions 18/59 dead transitions. [2024-06-14 11:53:49,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 59 transitions, 398 flow [2024-06-14 11:53:49,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:49,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:49,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:53:49,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-14 11:53:49,569 INFO L175 Difference]: Start difference. First operand has 98 places, 46 transitions, 258 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:53:49,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 59 transitions, 398 flow [2024-06-14 11:53:49,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 59 transitions, 362 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:49,575 INFO L231 Difference]: Finished difference. Result has 92 places, 39 transitions, 202 flow [2024-06-14 11:53:49,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=202, PETRI_PLACES=92, PETRI_TRANSITIONS=39} [2024-06-14 11:53:49,575 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-14 11:53:49,575 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 39 transitions, 202 flow [2024-06-14 11:53:49,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:49,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:49,576 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] [2024-06-14 11:53:49,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-14 11:53:49,576 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:49,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:49,576 INFO L85 PathProgramCache]: Analyzing trace with hash -705548378, now seen corresponding path program 16 times [2024-06-14 11:53:49,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:49,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725515360] [2024-06-14 11:53:49,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:49,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:51,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:51,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:51,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725515360] [2024-06-14 11:53:51,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725515360] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:51,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:51,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:51,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34375271] [2024-06-14 11:53:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:51,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:51,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:51,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:51,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:51,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:51,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 39 transitions, 202 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:51,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:51,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:51,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:51,962 INFO L124 PetriNetUnfolderBase]: 73/171 cut-off events. [2024-06-14 11:53:51,962 INFO L125 PetriNetUnfolderBase]: For 4038/4038 co-relation queries the response was YES. [2024-06-14 11:53:51,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 171 events. 73/171 cut-off events. For 4038/4038 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 540 event pairs, 17 based on Foata normal form. 6/176 useless extension candidates. Maximal degree in co-relation 588. Up to 90 conditions per place. [2024-06-14 11:53:51,963 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 27 selfloop transitions, 12 changer transitions 10/52 dead transitions. [2024-06-14 11:53:51,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 52 transitions, 328 flow [2024-06-14 11:53:51,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:51,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:51,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:53:51,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-14 11:53:51,964 INFO L175 Difference]: Start difference. First operand has 92 places, 39 transitions, 202 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:53:51,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 52 transitions, 328 flow [2024-06-14 11:53:51,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 52 transitions, 310 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 11:53:51,968 INFO L231 Difference]: Finished difference. Result has 81 places, 36 transitions, 197 flow [2024-06-14 11:53:51,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=197, PETRI_PLACES=81, PETRI_TRANSITIONS=36} [2024-06-14 11:53:51,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-14 11:53:51,969 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 36 transitions, 197 flow [2024-06-14 11:53:51,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:51,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:51,969 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] [2024-06-14 11:53:51,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-14 11:53:51,969 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:51,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash -711054908, now seen corresponding path program 17 times [2024-06-14 11:53:51,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:51,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622754985] [2024-06-14 11:53:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:51,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:54,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:54,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622754985] [2024-06-14 11:53:54,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622754985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:54,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:54,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:54,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105365795] [2024-06-14 11:53:54,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:54,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:54,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:54,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:54,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:54,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 36 transitions, 197 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:54,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:54,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:54,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:54,554 INFO L124 PetriNetUnfolderBase]: 66/158 cut-off events. [2024-06-14 11:53:54,554 INFO L125 PetriNetUnfolderBase]: For 2916/2916 co-relation queries the response was YES. [2024-06-14 11:53:54,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 158 events. 66/158 cut-off events. For 2916/2916 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 480 event pairs, 15 based on Foata normal form. 6/163 useless extension candidates. Maximal degree in co-relation 544. Up to 72 conditions per place. [2024-06-14 11:53:54,555 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 23 selfloop transitions, 8 changer transitions 16/50 dead transitions. [2024-06-14 11:53:54,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 50 transitions, 321 flow [2024-06-14 11:53:54,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:54,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-14 11:53:54,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-14 11:53:54,555 INFO L175 Difference]: Start difference. First operand has 81 places, 36 transitions, 197 flow. Second operand 12 states and 125 transitions. [2024-06-14 11:53:54,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 50 transitions, 321 flow [2024-06-14 11:53:54,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 50 transitions, 291 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:53:54,558 INFO L231 Difference]: Finished difference. Result has 77 places, 30 transitions, 159 flow [2024-06-14 11:53:54,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=159, PETRI_PLACES=77, PETRI_TRANSITIONS=30} [2024-06-14 11:53:54,558 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-14 11:53:54,558 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 30 transitions, 159 flow [2024-06-14 11:53:54,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:54,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:54,558 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] [2024-06-14 11:53:54,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-14 11:53:54,558 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:54,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:54,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1891877256, now seen corresponding path program 18 times [2024-06-14 11:53:54,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:54,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236253256] [2024-06-14 11:53:54,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:54,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236253256] [2024-06-14 11:53:57,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236253256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:57,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:57,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:57,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64400894] [2024-06-14 11:53:57,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:57,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:57,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:53:57,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:53:57,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 30 transitions, 159 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:57,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:53:57,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:53:57,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:53:57,951 INFO L124 PetriNetUnfolderBase]: 53/129 cut-off events. [2024-06-14 11:53:57,952 INFO L125 PetriNetUnfolderBase]: For 2402/2402 co-relation queries the response was YES. [2024-06-14 11:53:57,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 129 events. 53/129 cut-off events. For 2402/2402 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 346 event pairs, 15 based on Foata normal form. 6/134 useless extension candidates. Maximal degree in co-relation 448. Up to 62 conditions per place. [2024-06-14 11:53:57,952 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 20 selfloop transitions, 10 changer transitions 10/43 dead transitions. [2024-06-14 11:53:57,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 43 transitions, 267 flow [2024-06-14 11:53:57,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:53:57,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:53:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-14 11:53:57,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3177083333333333 [2024-06-14 11:53:57,953 INFO L175 Difference]: Start difference. First operand has 77 places, 30 transitions, 159 flow. Second operand 12 states and 122 transitions. [2024-06-14 11:53:57,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 43 transitions, 267 flow [2024-06-14 11:53:57,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 43 transitions, 239 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 11:53:57,955 INFO L231 Difference]: Finished difference. Result has 67 places, 27 transitions, 140 flow [2024-06-14 11:53:57,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=140, PETRI_PLACES=67, PETRI_TRANSITIONS=27} [2024-06-14 11:53:57,955 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-14 11:53:57,956 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 27 transitions, 140 flow [2024-06-14 11:53:57,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:53:57,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:53:57,956 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] [2024-06-14 11:53:57,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-14 11:53:57,956 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:53:57,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:53:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1891733106, now seen corresponding path program 19 times [2024-06-14 11:53:57,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:53:57,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351922342] [2024-06-14 11:53:57,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:53:57,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:53:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:53:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:53:59,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:53:59,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351922342] [2024-06-14 11:53:59,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351922342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:53:59,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:53:59,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:53:59,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250471511] [2024-06-14 11:53:59,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:53:59,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:53:59,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:53:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:53:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:00,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:54:00,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 27 transitions, 140 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:00,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:00,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:54:00,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:00,424 INFO L124 PetriNetUnfolderBase]: 46/116 cut-off events. [2024-06-14 11:54:00,424 INFO L125 PetriNetUnfolderBase]: For 1356/1356 co-relation queries the response was YES. [2024-06-14 11:54:00,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 116 events. 46/116 cut-off events. For 1356/1356 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 285 event pairs, 4 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 386. Up to 38 conditions per place. [2024-06-14 11:54:00,425 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 19 selfloop transitions, 9 changer transitions 10/41 dead transitions. [2024-06-14 11:54:00,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 41 transitions, 246 flow [2024-06-14 11:54:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-14 11:54:00,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3151041666666667 [2024-06-14 11:54:00,426 INFO L175 Difference]: Start difference. First operand has 67 places, 27 transitions, 140 flow. Second operand 12 states and 121 transitions. [2024-06-14 11:54:00,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 41 transitions, 246 flow [2024-06-14 11:54:00,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 41 transitions, 220 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 11:54:00,427 INFO L231 Difference]: Finished difference. Result has 63 places, 23 transitions, 116 flow [2024-06-14 11:54:00,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=116, PETRI_PLACES=63, PETRI_TRANSITIONS=23} [2024-06-14 11:54:00,428 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-14 11:54:00,428 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 23 transitions, 116 flow [2024-06-14 11:54:00,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:00,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 11:54:00,428 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] [2024-06-14 11:54:00,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-14 11:54:00,429 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 11:54:00,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 11:54:00,429 INFO L85 PathProgramCache]: Analyzing trace with hash 2091179046, now seen corresponding path program 20 times [2024-06-14 11:54:00,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 11:54:00,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330314719] [2024-06-14 11:54:00,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 11:54:00,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 11:54:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 11:54:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 11:54:02,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 11:54:02,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330314719] [2024-06-14 11:54:02,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330314719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 11:54:02,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 11:54:02,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 11:54:02,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661448000] [2024-06-14 11:54:02,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 11:54:02,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 11:54:02,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 11:54:02,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 11:54:02,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 11:54:02,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-14 11:54:02,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 23 transitions, 116 flow. Second operand has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:02,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 11:54:02,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-14 11:54:02,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 11:54:02,884 INFO L124 PetriNetUnfolderBase]: 20/60 cut-off events. [2024-06-14 11:54:02,884 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-06-14 11:54:02,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 60 events. 20/60 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 75 event pairs, 0 based on Foata normal form. 6/65 useless extension candidates. Maximal degree in co-relation 164. Up to 24 conditions per place. [2024-06-14 11:54:02,885 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 31/31 dead transitions. [2024-06-14 11:54:02,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 31 transitions, 162 flow [2024-06-14 11:54:02,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 11:54:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 11:54:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-14 11:54:02,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2942708333333333 [2024-06-14 11:54:02,886 INFO L175 Difference]: Start difference. First operand has 63 places, 23 transitions, 116 flow. Second operand 12 states and 113 transitions. [2024-06-14 11:54:02,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 31 transitions, 162 flow [2024-06-14 11:54:02,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 31 transitions, 124 flow, removed 1 selfloop flow, removed 19 redundant places. [2024-06-14 11:54:02,886 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2024-06-14 11:54:02,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=38, 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=49, PETRI_TRANSITIONS=0} [2024-06-14 11:54:02,887 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 18 predicate places. [2024-06-14 11:54:02,887 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2024-06-14 11:54:02,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.307692307692308) internal successors, (108), 13 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 11:54:02,889 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 11:54:02,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 11:54:02,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 11:54:02,891 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 11:54:02,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-14 11:54:02,892 INFO L445 BasicCegarLoop]: Path program histogram: [37, 32, 20, 19, 17, 16, 15, 10, 7, 6, 6, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 11:54:02,894 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 11:54:02,894 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 11:54:02,898 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 11:54:02,898 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 11:54:02,899 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 11:54:02 BasicIcfg [2024-06-14 11:54:02,899 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 11:54:02,899 INFO L158 Benchmark]: Toolchain (without parser) took 481717.06ms. Allocated memory was 190.8MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 107.5MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 105.9MB. Max. memory is 16.1GB. [2024-06-14 11:54:02,901 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory was 141.4MB in the beginning and 141.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:54:02,902 INFO L158 Benchmark]: Witness Parser took 0.42ms. Allocated memory is still 190.8MB. Free memory was 113.3MB in the beginning and 113.2MB in the end (delta: 129.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 11:54:02,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 617.72ms. Allocated memory was 190.8MB in the beginning and 262.1MB in the end (delta: 71.3MB). Free memory was 107.2MB in the beginning and 205.2MB in the end (delta: -98.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. [2024-06-14 11:54:02,902 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.80ms. Allocated memory is still 262.1MB. Free memory was 205.2MB in the beginning and 202.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 11:54:02,902 INFO L158 Benchmark]: Boogie Preprocessor took 76.53ms. Allocated memory is still 262.1MB. Free memory was 202.1MB in the beginning and 197.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-14 11:54:02,903 INFO L158 Benchmark]: RCFGBuilder took 748.11ms. Allocated memory is still 262.1MB. Free memory was 197.9MB in the beginning and 140.2MB in the end (delta: 57.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-14 11:54:02,903 INFO L158 Benchmark]: TraceAbstraction took 480189.18ms. Allocated memory was 262.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 140.2MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. [2024-06-14 11:54:02,904 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 190.8MB. Free memory was 141.4MB in the beginning and 141.2MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.42ms. Allocated memory is still 190.8MB. Free memory was 113.3MB in the beginning and 113.2MB in the end (delta: 129.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 617.72ms. Allocated memory was 190.8MB in the beginning and 262.1MB in the end (delta: 71.3MB). Free memory was 107.2MB in the beginning and 205.2MB in the end (delta: -98.0MB). Peak memory consumption was 11.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.80ms. Allocated memory is still 262.1MB. Free memory was 205.2MB in the beginning and 202.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.53ms. Allocated memory is still 262.1MB. Free memory was 202.1MB in the beginning and 197.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 748.11ms. Allocated memory is still 262.1MB. Free memory was 197.9MB in the beginning and 140.2MB in the end (delta: 57.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 480189.18ms. Allocated memory was 262.1MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 140.2MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 64.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 829]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 830]: 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, 51 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: 480.1s, OverallIterations: 220, TraceHistogramMax: 1, PathProgramHistogramMax: 37, EmptinessCheckTime: 0.0s, AutomataDifference: 166.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14593 SdHoareTripleChecker+Valid, 63.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12538 mSDsluCounter, 5108 SdHoareTripleChecker+Invalid, 55.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4505 mSDsCounter, 2507 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101216 IncrementalHoareTripleChecker+Invalid, 103723 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2507 mSolverCounterUnsat, 603 mSDtfsCounter, 101216 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2614 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2595 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5684 ImplicationChecksByTransitivity, 86.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3093occurred in iteration=117, InterpolantAutomatonStates: 2257, 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: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 309.8s InterpolantComputationTime, 3869 NumberOfCodeBlocks, 3869 NumberOfCodeBlocksAsserted, 220 NumberOfCheckSat, 3649 ConstructedInterpolants, 0 QuantifiedInterpolants, 191994 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 220 InterpolantComputations, 220 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! [2024-06-14 11:54:03,112 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-06-14 11:54:03,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE