./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-05-21_14-57-05.files/protection/rfi004.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/rfi004.i ./goblint.2024-05-21_14-57-05.files/protection/rfi004.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-cde23df-m [2024-06-14 12:41:08,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-14 12:41:08,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-14 12:41:08,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-14 12:41:08,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-14 12:41:08,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-14 12:41:08,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-14 12:41:08,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-14 12:41:08,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-14 12:41:08,626 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-14 12:41:08,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-14 12:41:08,626 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-14 12:41:08,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-14 12:41:08,627 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-14 12:41:08,627 INFO L153 SettingsManager]: * Use SBE=true [2024-06-14 12:41:08,628 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-14 12:41:08,628 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-14 12:41:08,629 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-14 12:41:08,629 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-14 12:41:08,629 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-14 12:41:08,630 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-14 12:41:08,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-14 12:41:08,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-14 12:41:08,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-14 12:41:08,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-14 12:41:08,635 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-14 12:41:08,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-14 12:41:08,636 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-14 12:41:08,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-14 12:41:08,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-14 12:41:08,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-14 12:41:08,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-14 12:41:08,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:41:08,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-14 12:41:08,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-14 12:41:08,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-14 12:41:08,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-14 12:41:08,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-14 12:41:08,645 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-14 12:41:08,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-14 12:41:08,645 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-14 12:41:08,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-14 12:41:08,648 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-14 12:41:08,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-14 12:41:08,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-14 12:41:08,958 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-14 12:41:08,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-14 12:41:08,962 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-14 12:41:08,963 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-14 12:41:08,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-21_14-57-05.files/protection/rfi004.yml/witness.yml [2024-06-14 12:41:09,171 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-14 12:41:09,177 INFO L274 PluginConnector]: CDTParser initialized [2024-06-14 12:41:09,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-14 12:41:10,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-14 12:41:10,538 INFO L384 CDTParser]: Found 1 translation units. [2024-06-14 12:41:10,541 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-14 12:41:10,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125101ee3/ae104b903b3b4bd6bf4b4ab8dfc5fff1/FLAG840e4aa9b [2024-06-14 12:41:10,567 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/125101ee3/ae104b903b3b4bd6bf4b4ab8dfc5fff1 [2024-06-14 12:41:10,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-14 12:41:10,568 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-14 12:41:10,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-14 12:41:10,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-14 12:41:10,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-14 12:41:10,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:41:09" (1/2) ... [2024-06-14 12:41:10,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f010667 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:41:10, skipping insertion in model container [2024-06-14 12:41:10,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:41:09" (1/2) ... [2024-06-14 12:41:10,578 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@740eb6c5 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 14.06 12:41:10, skipping insertion in model container [2024-06-14 12:41:10,579 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:41:10" (2/2) ... [2024-06-14 12:41:10,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f010667 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:10, skipping insertion in model container [2024-06-14 12:41:10,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.06 12:41:10" (2/2) ... [2024-06-14 12:41:10,580 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-14 12:41:10,657 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-14 12:41:10,658 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-14 12:41:10,658 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || ((0 <= __unbuffered_p1_EBX && __unbuffered_p1_EBX <= 1) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1))) [2024-06-14 12:41:10,658 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-14 12:41:10,659 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-14 12:41:10,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-14 12:41:11,144 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:41:11,155 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-14 12:41:11,282 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-14 12:41:11,317 INFO L206 MainTranslator]: Completed translation [2024-06-14 12:41:11,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11 WrapperNode [2024-06-14 12:41:11,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-14 12:41:11,319 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-14 12:41:11,319 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-14 12:41:11,319 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-14 12:41:11,325 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,370 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-14 12:41:11,370 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-14 12:41:11,371 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-14 12:41:11,371 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-14 12:41:11,371 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-14 12:41:11,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,389 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,405 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 12:41:11,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,413 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,425 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-14 12:41:11,426 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-14 12:41:11,426 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-14 12:41:11,426 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-14 12:41:11,427 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (1/1) ... [2024-06-14 12:41:11,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-14 12:41:11,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-14 12:41:11,465 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 12:41:11,480 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 12:41:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-14 12:41:11,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-14 12:41:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-14 12:41:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-14 12:41:11,510 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-14 12:41:11,510 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-14 12:41:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-14 12:41:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-14 12:41:11,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-14 12:41:11,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-14 12:41:11,513 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 12:41:11,674 INFO L244 CfgBuilder]: Building ICFG [2024-06-14 12:41:11,676 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-14 12:41:12,001 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-14 12:41:12,002 INFO L293 CfgBuilder]: Performing block encoding [2024-06-14 12:41:12,197 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-14 12:41:12,197 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-14 12:41:12,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:41:12 BoogieIcfgContainer [2024-06-14 12:41:12,200 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-14 12:41:12,204 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-14 12:41:12,204 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-14 12:41:12,208 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-14 12:41:12,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 14.06 12:41:09" (1/4) ... [2024-06-14 12:41:12,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fdc1c8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 14.06 12:41:12, skipping insertion in model container [2024-06-14 12:41:12,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.06 12:41:10" (2/4) ... [2024-06-14 12:41:12,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fdc1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:41:12, skipping insertion in model container [2024-06-14 12:41:12,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.06 12:41:11" (3/4) ... [2024-06-14 12:41:12,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fdc1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 12:41:12, skipping insertion in model container [2024-06-14 12:41:12,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 12:41:12" (4/4) ... [2024-06-14 12:41:12,217 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-14 12:41:12,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-14 12:41:12,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-14 12:41:12,234 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-14 12:41:12,283 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-14 12:41:12,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 12:41:12,354 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2024-06-14 12:41:12,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:41:12,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38 conditions, 31 events. 0/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-14 12:41:12,358 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 33 transitions, 74 flow [2024-06-14 12:41:12,362 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 25 transitions, 56 flow [2024-06-14 12:41:12,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-14 12:41:12,384 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;@41b14875, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-14 12:41:12,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-14 12:41:12,392 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-14 12:41:12,393 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-14 12:41:12,393 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-14 12:41:12,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:12,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-06-14 12:41:12,394 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 12:41:12,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:12,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1590784768, now seen corresponding path program 1 times [2024-06-14 12:41:12,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:12,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186871791] [2024-06-14 12:41:12,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:12,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:13,486 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 12:41:13,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:13,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186871791] [2024-06-14 12:41:13,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186871791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:13,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:13,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-14 12:41:13,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784799725] [2024-06-14 12:41:13,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:13,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-14 12:41:13,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:13,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-14 12:41:13,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-14 12:41:13,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 33 [2024-06-14 12:41:13,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 12:41:13,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:13,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 33 [2024-06-14 12:41:13,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:13,712 INFO L124 PetriNetUnfolderBase]: 131/270 cut-off events. [2024-06-14 12:41:13,712 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-06-14 12:41:13,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528 conditions, 270 events. 131/270 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1073 event pairs, 75 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-14 12:41:13,717 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-06-14 12:41:13,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 121 flow [2024-06-14 12:41:13,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-14 12:41:13,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-14 12:41:13,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-06-14 12:41:13,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6060606060606061 [2024-06-14 12:41:13,730 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 56 flow. Second operand 3 states and 60 transitions. [2024-06-14 12:41:13,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 121 flow [2024-06-14 12:41:13,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 31 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-14 12:41:13,734 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 75 flow [2024-06-14 12:41:13,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2024-06-14 12:41:13,738 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2024-06-14 12:41:13,739 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 75 flow [2024-06-14 12:41:13,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 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 12:41:13,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:13,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:13,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-14 12:41:13,740 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 12:41:13,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:13,740 INFO L85 PathProgramCache]: Analyzing trace with hash -263456755, now seen corresponding path program 1 times [2024-06-14 12:41:13,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:13,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849980889] [2024-06-14 12:41:13,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:13,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:14,340 INFO 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 12:41:14,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:14,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849980889] [2024-06-14 12:41:14,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849980889] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:14,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:14,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-14 12:41:14,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127330848] [2024-06-14 12:41:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:14,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-14 12:41:14,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:14,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-14 12:41:14,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-14 12:41:14,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-14 12:41:14,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:14,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:14,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-14 12:41:14,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:14,515 INFO L124 PetriNetUnfolderBase]: 147/287 cut-off events. [2024-06-14 12:41:14,516 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-14 12:41:14,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 287 events. 147/287 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1095 event pairs, 59 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 634. Up to 244 conditions per place. [2024-06-14 12:41:14,522 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 28 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2024-06-14 12:41:14,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 169 flow [2024-06-14 12:41:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-14 12:41:14,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-14 12:41:14,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 75 transitions. [2024-06-14 12:41:14,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-06-14 12:41:14,526 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 75 flow. Second operand 4 states and 75 transitions. [2024-06-14 12:41:14,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 169 flow [2024-06-14 12:41:14,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-14 12:41:14,531 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 99 flow [2024-06-14 12:41:14,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=99, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2024-06-14 12:41:14,532 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2024-06-14 12:41:14,533 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 99 flow [2024-06-14 12:41:14,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:14,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:14,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:14,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-14 12:41:14,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:14,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1917780520, now seen corresponding path program 1 times [2024-06-14 12:41:14,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:14,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524925200] [2024-06-14 12:41:14,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:15,351 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 12:41:15,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:15,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524925200] [2024-06-14 12:41:15,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524925200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:15,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:15,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:41:15,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069399349] [2024-06-14 12:41:15,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:15,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:41:15,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:15,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:41:15,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:41:15,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-14 12:41:15,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 99 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:15,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:15,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-14 12:41:15,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:15,568 INFO L124 PetriNetUnfolderBase]: 123/253 cut-off events. [2024-06-14 12:41:15,569 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-06-14 12:41:15,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 253 events. 123/253 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 977 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 617. Up to 219 conditions per place. [2024-06-14 12:41:15,571 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 24 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-14 12:41:15,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 36 transitions, 177 flow [2024-06-14 12:41:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-14 12:41:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-14 12:41:15,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-06-14 12:41:15,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47878787878787876 [2024-06-14 12:41:15,573 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 99 flow. Second operand 5 states and 79 transitions. [2024-06-14 12:41:15,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 36 transitions, 177 flow [2024-06-14 12:41:15,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 168 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-14 12:41:15,575 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 117 flow [2024-06-14 12:41:15,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-14 12:41:15,576 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2024-06-14 12:41:15,576 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 117 flow [2024-06-14 12:41:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:15,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:15,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:15,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-14 12:41:15,577 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:15,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:15,577 INFO L85 PathProgramCache]: Analyzing trace with hash -2132256803, now seen corresponding path program 1 times [2024-06-14 12:41:15,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:15,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280168751] [2024-06-14 12:41:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:15,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:16,638 INFO 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 12:41:16,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:16,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280168751] [2024-06-14 12:41:16,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280168751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:16,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:16,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-14 12:41:16,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504857492] [2024-06-14 12:41:16,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:16,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-14 12:41:16,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:16,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-14 12:41:16,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-14 12:41:16,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-06-14 12:41:16,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:16,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:16,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-06-14 12:41:16,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:16,914 INFO L124 PetriNetUnfolderBase]: 141/280 cut-off events. [2024-06-14 12:41:16,915 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-06-14 12:41:16,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752 conditions, 280 events. 141/280 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1072 event pairs, 24 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 733. Up to 215 conditions per place. [2024-06-14 12:41:16,917 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 33 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-14 12:41:16,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 233 flow [2024-06-14 12:41:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:41:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:41:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-14 12:41:16,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.51010101010101 [2024-06-14 12:41:16,920 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 117 flow. Second operand 6 states and 101 transitions. [2024-06-14 12:41:16,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 233 flow [2024-06-14 12:41:16,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 222 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-14 12:41:16,922 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 131 flow [2024-06-14 12:41:16,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=131, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2024-06-14 12:41:16,923 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2024-06-14 12:41:16,923 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 131 flow [2024-06-14 12:41:16,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:16,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:16,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:16,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-14 12:41:16,924 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-14 12:41:16,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:16,925 INFO L85 PathProgramCache]: Analyzing trace with hash 648853829, now seen corresponding path program 1 times [2024-06-14 12:41:16,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:16,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322002277] [2024-06-14 12:41:16,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:16,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:17,664 INFO 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 12:41:17,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322002277] [2024-06-14 12:41:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322002277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:17,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:41:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113506517] [2024-06-14 12:41:17,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:17,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:41:17,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:17,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:41:17,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:41:17,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:17,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 131 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 12:41:17,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:17,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:17,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:17,893 INFO L124 PetriNetUnfolderBase]: 139/281 cut-off events. [2024-06-14 12:41:17,893 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-06-14 12:41:17,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 281 events. 139/281 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1072 event pairs, 41 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 797. Up to 242 conditions per place. [2024-06-14 12:41:17,895 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 27 selfloop transitions, 8 changer transitions 0/40 dead transitions. [2024-06-14 12:41:17,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 40 transitions, 223 flow [2024-06-14 12:41:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:41:17,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:41:17,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-14 12:41:17,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-14 12:41:17,897 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 131 flow. Second operand 6 states and 86 transitions. [2024-06-14 12:41:17,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 40 transitions, 223 flow [2024-06-14 12:41:17,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 207 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-14 12:41:17,900 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 148 flow [2024-06-14 12:41:17,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-14 12:41:17,901 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 13 predicate places. [2024-06-14 12:41:17,901 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 148 flow [2024-06-14 12:41:17,901 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 12:41:17,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:17,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:17,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-14 12:41:17,902 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 12:41:17,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:17,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1367042023, now seen corresponding path program 1 times [2024-06-14 12:41:17,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:17,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662144212] [2024-06-14 12:41:17,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:17,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:18,569 INFO 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 12:41:18,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:18,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662144212] [2024-06-14 12:41:18,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662144212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:18,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:18,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:41:18,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732577181] [2024-06-14 12:41:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:18,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:41:18,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:18,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:41:18,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:41:18,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:18,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 148 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 12:41:18,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:18,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:18,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:18,860 INFO L124 PetriNetUnfolderBase]: 156/307 cut-off events. [2024-06-14 12:41:18,860 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-14 12:41:18,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 959 conditions, 307 events. 156/307 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1201 event pairs, 46 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 937. Up to 255 conditions per place. [2024-06-14 12:41:18,864 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 32 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-06-14 12:41:18,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 262 flow [2024-06-14 12:41:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:41:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:41:18,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-14 12:41:18,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-14 12:41:18,866 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 148 flow. Second operand 6 states and 90 transitions. [2024-06-14 12:41:18,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 262 flow [2024-06-14 12:41:18,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 46 transitions, 245 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:41:18,871 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 164 flow [2024-06-14 12:41:18,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-14 12:41:18,874 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2024-06-14 12:41:18,874 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 164 flow [2024-06-14 12:41:18,874 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 12:41:18,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:18,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:18,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-14 12:41:18,875 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 12:41:18,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:18,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1360375783, now seen corresponding path program 2 times [2024-06-14 12:41:18,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:18,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265137373] [2024-06-14 12:41:18,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:18,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:19,568 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 12:41:19,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265137373] [2024-06-14 12:41:19,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265137373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:19,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:19,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-14 12:41:19,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075225991] [2024-06-14 12:41:19,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:19,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-14 12:41:19,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:19,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-14 12:41:19,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-14 12:41:19,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:19,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 164 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 12:41:19,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:19,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:19,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:19,837 INFO L124 PetriNetUnfolderBase]: 155/306 cut-off events. [2024-06-14 12:41:19,837 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-14 12:41:19,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1029 conditions, 306 events. 155/306 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1216 event pairs, 49 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1006. Up to 246 conditions per place. [2024-06-14 12:41:19,839 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 29 selfloop transitions, 11 changer transitions 0/46 dead transitions. [2024-06-14 12:41:19,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 46 transitions, 278 flow [2024-06-14 12:41:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-14 12:41:19,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-14 12:41:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 90 transitions. [2024-06-14 12:41:19,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-14 12:41:19,841 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 164 flow. Second operand 6 states and 90 transitions. [2024-06-14 12:41:19,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 46 transitions, 278 flow [2024-06-14 12:41:19,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 261 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-14 12:41:19,844 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 190 flow [2024-06-14 12:41:19,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2024-06-14 12:41:19,844 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2024-06-14 12:41:19,845 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 190 flow [2024-06-14 12:41:19,845 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 12:41:19,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:19,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:19,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-14 12:41:19,845 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 12:41:19,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:19,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1360366855, now seen corresponding path program 1 times [2024-06-14 12:41:19,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:19,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368621252] [2024-06-14 12:41:19,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:19,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:19,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:20,605 INFO 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 12:41:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:20,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368621252] [2024-06-14 12:41:20,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368621252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:41:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32581223] [2024-06-14 12:41:20,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:20,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:41:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:20,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:41:20,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:41:20,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:20,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 190 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 12:41:20,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:20,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:20,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:20,846 INFO L124 PetriNetUnfolderBase]: 144/292 cut-off events. [2024-06-14 12:41:20,847 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-06-14 12:41:20,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 292 events. 144/292 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 39 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 990. Up to 248 conditions per place. [2024-06-14 12:41:20,849 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 32 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-14 12:41:20,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 300 flow [2024-06-14 12:41:20,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:41:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:41:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-06-14 12:41:20,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:41:20,851 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 190 flow. Second operand 7 states and 98 transitions. [2024-06-14 12:41:20,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 300 flow [2024-06-14 12:41:20,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 47 transitions, 273 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-14 12:41:20,854 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 202 flow [2024-06-14 12:41:20,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=202, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2024-06-14 12:41:20,858 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2024-06-14 12:41:20,858 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 202 flow [2024-06-14 12:41:20,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 12:41:20,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:20,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:20,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-14 12:41:20,859 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 12:41:20,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:20,860 INFO L85 PathProgramCache]: Analyzing trace with hash -951238650, now seen corresponding path program 1 times [2024-06-14 12:41:20,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:20,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670309332] [2024-06-14 12:41:20,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:20,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:21,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670309332] [2024-06-14 12:41:21,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670309332] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:21,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:21,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:41:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589502823] [2024-06-14 12:41:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:21,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:41:21,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:41:21,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:41:21,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:21,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 202 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:41:21,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:21,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:21,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:21,846 INFO L124 PetriNetUnfolderBase]: 170/328 cut-off events. [2024-06-14 12:41:21,847 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-06-14 12:41:21,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1196 conditions, 328 events. 170/328 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1275 event pairs, 45 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1171. Up to 278 conditions per place. [2024-06-14 12:41:21,850 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 40 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-06-14 12:41:21,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 54 transitions, 346 flow [2024-06-14 12:41:21,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:41:21,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:41:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-14 12:41:21,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199134199134199 [2024-06-14 12:41:21,852 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 202 flow. Second operand 7 states and 97 transitions. [2024-06-14 12:41:21,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 54 transitions, 346 flow [2024-06-14 12:41:21,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 323 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:21,856 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 220 flow [2024-06-14 12:41:21,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=220, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2024-06-14 12:41:21,857 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 22 predicate places. [2024-06-14 12:41:21,857 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 220 flow [2024-06-14 12:41:21,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:41:21,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:21,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:21,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-14 12:41:21,858 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 12:41:21,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:21,859 INFO L85 PathProgramCache]: Analyzing trace with hash 778291492, now seen corresponding path program 2 times [2024-06-14 12:41:21,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:21,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120638320] [2024-06-14 12:41:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:21,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:22,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:22,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:22,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120638320] [2024-06-14 12:41:22,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120638320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:22,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:22,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:41:22,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750552651] [2024-06-14 12:41:22,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:22,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:41:22,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:22,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:41:22,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:41:22,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:22,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 220 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:41:22,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:22,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:22,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:22,860 INFO L124 PetriNetUnfolderBase]: 181/345 cut-off events. [2024-06-14 12:41:22,860 INFO L125 PetriNetUnfolderBase]: For 1694/1694 co-relation queries the response was YES. [2024-06-14 12:41:22,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 345 events. 181/345 cut-off events. For 1694/1694 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1411 event pairs, 49 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 1315. Up to 267 conditions per place. [2024-06-14 12:41:22,863 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 35 selfloop transitions, 18 changer transitions 0/57 dead transitions. [2024-06-14 12:41:22,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 57 transitions, 406 flow [2024-06-14 12:41:22,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:41:22,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:41:22,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-14 12:41:22,865 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:41:22,865 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 220 flow. Second operand 7 states and 99 transitions. [2024-06-14 12:41:22,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 57 transitions, 406 flow [2024-06-14 12:41:22,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 57 transitions, 381 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:22,868 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 272 flow [2024-06-14 12:41:22,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=272, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2024-06-14 12:41:22,870 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2024-06-14 12:41:22,870 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 272 flow [2024-06-14 12:41:22,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:41:22,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:22,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:22,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-14 12:41:22,872 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 12:41:22,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash 778024582, now seen corresponding path program 3 times [2024-06-14 12:41:22,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:22,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623641428] [2024-06-14 12:41:22,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:22,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:23,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:23,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623641428] [2024-06-14 12:41:23,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623641428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:23,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:23,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:41:23,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775400132] [2024-06-14 12:41:23,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:23,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:41:23,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:41:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:41:23,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:23,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 272 flow. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:41:23,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:23,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:23,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:23,869 INFO L124 PetriNetUnfolderBase]: 177/339 cut-off events. [2024-06-14 12:41:23,870 INFO L125 PetriNetUnfolderBase]: For 1997/1997 co-relation queries the response was YES. [2024-06-14 12:41:23,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1381 conditions, 339 events. 177/339 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1389 event pairs, 51 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 1354. Up to 264 conditions per place. [2024-06-14 12:41:23,872 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-14 12:41:23,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 404 flow [2024-06-14 12:41:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:41:23,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:41:23,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-14 12:41:23,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-14 12:41:23,874 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 272 flow. Second operand 7 states and 99 transitions. [2024-06-14 12:41:23,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 404 flow [2024-06-14 12:41:23,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 373 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-14 12:41:23,878 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 280 flow [2024-06-14 12:41:23,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=280, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2024-06-14 12:41:23,879 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 28 predicate places. [2024-06-14 12:41:23,879 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 280 flow [2024-06-14 12:41:23,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 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 12:41:23,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:23,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:23,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-14 12:41:23,880 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 12:41:23,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1668217690, now seen corresponding path program 1 times [2024-06-14 12:41:23,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:23,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359691495] [2024-06-14 12:41:23,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:23,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:24,864 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 12:41:24,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359691495] [2024-06-14 12:41:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359691495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:24,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:24,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:41:24,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697726257] [2024-06-14 12:41:24,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:24,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:41:24,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:41:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:41:24,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:24,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 280 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 12:41:24,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:24,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:24,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:25,203 INFO L124 PetriNetUnfolderBase]: 183/366 cut-off events. [2024-06-14 12:41:25,203 INFO L125 PetriNetUnfolderBase]: For 2437/2437 co-relation queries the response was YES. [2024-06-14 12:41:25,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 366 events. 183/366 cut-off events. For 2437/2437 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1561 event pairs, 49 based on Foata normal form. 1/365 useless extension candidates. Maximal degree in co-relation 1494. Up to 281 conditions per place. [2024-06-14 12:41:25,206 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 42 selfloop transitions, 16 changer transitions 0/67 dead transitions. [2024-06-14 12:41:25,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 67 transitions, 487 flow [2024-06-14 12:41:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:25,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 117 transitions. [2024-06-14 12:41:25,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4431818181818182 [2024-06-14 12:41:25,208 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 280 flow. Second operand 8 states and 117 transitions. [2024-06-14 12:41:25,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 67 transitions, 487 flow [2024-06-14 12:41:25,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 437 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:25,213 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 344 flow [2024-06-14 12:41:25,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=344, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-06-14 12:41:25,214 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2024-06-14 12:41:25,214 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 344 flow [2024-06-14 12:41:25,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 12:41:25,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:25,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:25,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-14 12:41:25,215 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 12:41:25,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:25,215 INFO L85 PathProgramCache]: Analyzing trace with hash 527868600, now seen corresponding path program 2 times [2024-06-14 12:41:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301242759] [2024-06-14 12:41:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:25,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:26,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:26,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301242759] [2024-06-14 12:41:26,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301242759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:26,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:26,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:41:26,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554919867] [2024-06-14 12:41:26,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:41:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:41:26,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:41:26,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:26,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 344 flow. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 12:41:26,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:26,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:26,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:26,501 INFO L124 PetriNetUnfolderBase]: 181/363 cut-off events. [2024-06-14 12:41:26,501 INFO L125 PetriNetUnfolderBase]: For 2826/2826 co-relation queries the response was YES. [2024-06-14 12:41:26,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 363 events. 181/363 cut-off events. For 2826/2826 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1571 event pairs, 48 based on Foata normal form. 1/362 useless extension candidates. Maximal degree in co-relation 1540. Up to 273 conditions per place. [2024-06-14 12:41:26,504 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 42 selfloop transitions, 18 changer transitions 0/69 dead transitions. [2024-06-14 12:41:26,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 524 flow [2024-06-14 12:41:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-14 12:41:26,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-14 12:41:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2024-06-14 12:41:26,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45021645021645024 [2024-06-14 12:41:26,505 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 344 flow. Second operand 7 states and 104 transitions. [2024-06-14 12:41:26,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 524 flow [2024-06-14 12:41:26,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 492 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-14 12:41:26,512 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 385 flow [2024-06-14 12:41:26,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=385, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2024-06-14 12:41:26,513 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-14 12:41:26,513 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 385 flow [2024-06-14 12:41:26,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 8 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 12:41:26,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:26,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-14 12:41:26,514 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 12:41:26,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 532637144, now seen corresponding path program 1 times [2024-06-14 12:41:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:26,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028790258] [2024-06-14 12:41:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:27,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:27,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028790258] [2024-06-14 12:41:27,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028790258] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:27,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:27,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:27,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466704532] [2024-06-14 12:41:27,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:27,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:27,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:27,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:27,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:27,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:27,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 385 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:27,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:27,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:27,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:27,625 INFO L124 PetriNetUnfolderBase]: 196/382 cut-off events. [2024-06-14 12:41:27,626 INFO L125 PetriNetUnfolderBase]: For 3203/3203 co-relation queries the response was YES. [2024-06-14 12:41:27,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1695 conditions, 382 events. 196/382 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1617 event pairs, 45 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 1662. Up to 311 conditions per place. [2024-06-14 12:41:27,629 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 55 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-06-14 12:41:27,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 585 flow [2024-06-14 12:41:27,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 12:41:27,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-14 12:41:27,631 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 385 flow. Second operand 8 states and 109 transitions. [2024-06-14 12:41:27,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 585 flow [2024-06-14 12:41:27,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 532 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:27,637 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 387 flow [2024-06-14 12:41:27,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=387, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2024-06-14 12:41:27,638 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 39 predicate places. [2024-06-14 12:41:27,638 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 387 flow [2024-06-14 12:41:27,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:27,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:27,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:27,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-14 12:41:27,639 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 12:41:27,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:27,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1642469928, now seen corresponding path program 2 times [2024-06-14 12:41:27,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:27,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483803269] [2024-06-14 12:41:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:27,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:28,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:28,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483803269] [2024-06-14 12:41:28,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483803269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:28,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:28,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448352542] [2024-06-14 12:41:28,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:28,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:28,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:28,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:28,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:28,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:28,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 387 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:28,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:28,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:28,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:28,733 INFO L124 PetriNetUnfolderBase]: 207/400 cut-off events. [2024-06-14 12:41:28,733 INFO L125 PetriNetUnfolderBase]: For 3408/3408 co-relation queries the response was YES. [2024-06-14 12:41:28,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1784 conditions, 400 events. 207/400 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1722 event pairs, 46 based on Foata normal form. 2/396 useless extension candidates. Maximal degree in co-relation 1750. Up to 279 conditions per place. [2024-06-14 12:41:28,737 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 48 selfloop transitions, 26 changer transitions 0/78 dead transitions. [2024-06-14 12:41:28,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 78 transitions, 649 flow [2024-06-14 12:41:28,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:28,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:28,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-14 12:41:28,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:41:28,739 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 387 flow. Second operand 8 states and 112 transitions. [2024-06-14 12:41:28,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 78 transitions, 649 flow [2024-06-14 12:41:28,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 78 transitions, 612 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:28,744 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 466 flow [2024-06-14 12:41:28,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=466, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-14 12:41:28,745 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-14 12:41:28,745 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 466 flow [2024-06-14 12:41:28,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:28,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:28,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:28,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-14 12:41:28,746 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 12:41:28,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:28,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1642766598, now seen corresponding path program 3 times [2024-06-14 12:41:28,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:28,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909348071] [2024-06-14 12:41:28,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:28,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:29,526 INFO 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 12:41:29,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:29,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909348071] [2024-06-14 12:41:29,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909348071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:29,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:29,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:29,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988752307] [2024-06-14 12:41:29,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:29,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:29,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:29,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:29,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:29,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:29,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 466 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:29,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:29,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:29,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:29,771 INFO L124 PetriNetUnfolderBase]: 213/410 cut-off events. [2024-06-14 12:41:29,771 INFO L125 PetriNetUnfolderBase]: For 3976/3976 co-relation queries the response was YES. [2024-06-14 12:41:29,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 410 events. 213/410 cut-off events. For 3976/3976 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1774 event pairs, 46 based on Foata normal form. 2/406 useless extension candidates. Maximal degree in co-relation 1913. Up to 285 conditions per place. [2024-06-14 12:41:29,775 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 50 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-14 12:41:29,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 716 flow [2024-06-14 12:41:29,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:29,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:29,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-14 12:41:29,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-14 12:41:29,777 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 466 flow. Second operand 8 states and 113 transitions. [2024-06-14 12:41:29,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 716 flow [2024-06-14 12:41:29,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 80 transitions, 670 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-14 12:41:29,784 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 503 flow [2024-06-14 12:41:29,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=503, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-06-14 12:41:29,785 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 46 predicate places. [2024-06-14 12:41:29,785 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 503 flow [2024-06-14 12:41:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:29,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:29,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:29,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-14 12:41:29,787 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 12:41:29,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:29,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1651040808, now seen corresponding path program 4 times [2024-06-14 12:41:29,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:29,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928060743] [2024-06-14 12:41:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:29,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:30,557 INFO 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 12:41:30,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:30,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928060743] [2024-06-14 12:41:30,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928060743] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:30,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:30,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:30,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623013888] [2024-06-14 12:41:30,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:30,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:30,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:30,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:30,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:30,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:30,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 503 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:30,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:30,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:30,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:30,863 INFO L124 PetriNetUnfolderBase]: 209/404 cut-off events. [2024-06-14 12:41:30,863 INFO L125 PetriNetUnfolderBase]: For 4161/4161 co-relation queries the response was YES. [2024-06-14 12:41:30,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 404 events. 209/404 cut-off events. For 4161/4161 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1745 event pairs, 52 based on Foata normal form. 2/400 useless extension candidates. Maximal degree in co-relation 1920. Up to 282 conditions per place. [2024-06-14 12:41:30,868 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 50 selfloop transitions, 26 changer transitions 0/80 dead transitions. [2024-06-14 12:41:30,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 706 flow [2024-06-14 12:41:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:30,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-14 12:41:30,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-14 12:41:30,872 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 503 flow. Second operand 8 states and 113 transitions. [2024-06-14 12:41:30,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 706 flow [2024-06-14 12:41:30,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 643 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:30,883 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 506 flow [2024-06-14 12:41:30,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=506, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-06-14 12:41:30,884 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 49 predicate places. [2024-06-14 12:41:30,884 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 506 flow [2024-06-14 12:41:30,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:30,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:30,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:30,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-14 12:41:30,885 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 12:41:30,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1642459016, now seen corresponding path program 1 times [2024-06-14 12:41:30,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:30,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147925851] [2024-06-14 12:41:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:30,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:31,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:31,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147925851] [2024-06-14 12:41:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147925851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:31,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:31,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:31,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029018315] [2024-06-14 12:41:31,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:31,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:31,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:31,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:32,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:32,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 506 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 12:41:32,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:32,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:32,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:32,266 INFO L124 PetriNetUnfolderBase]: 207/404 cut-off events. [2024-06-14 12:41:32,266 INFO L125 PetriNetUnfolderBase]: For 4284/4286 co-relation queries the response was YES. [2024-06-14 12:41:32,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1953 conditions, 404 events. 207/404 cut-off events. For 4284/4286 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1762 event pairs, 55 based on Foata normal form. 1/403 useless extension candidates. Maximal degree in co-relation 1914. Up to 350 conditions per place. [2024-06-14 12:41:32,270 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 60 selfloop transitions, 14 changer transitions 0/78 dead transitions. [2024-06-14 12:41:32,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 78 transitions, 688 flow [2024-06-14 12:41:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:32,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-14 12:41:32,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:41:32,271 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 506 flow. Second operand 9 states and 114 transitions. [2024-06-14 12:41:32,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 78 transitions, 688 flow [2024-06-14 12:41:32,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 78 transitions, 646 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:32,279 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 513 flow [2024-06-14 12:41:32,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=513, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-06-14 12:41:32,280 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2024-06-14 12:41:32,280 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 513 flow [2024-06-14 12:41:32,280 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 12:41:32,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:32,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:32,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-14 12:41:32,281 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 12:41:32,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash -815941689, now seen corresponding path program 1 times [2024-06-14 12:41:32,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:32,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603069786] [2024-06-14 12:41:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:32,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:33,275 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 12:41:33,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:33,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603069786] [2024-06-14 12:41:33,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603069786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:33,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:33,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:33,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484418600] [2024-06-14 12:41:33,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:33,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:33,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:33,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:33,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:33,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:33,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 513 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:33,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:33,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:33,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:33,669 INFO L124 PetriNetUnfolderBase]: 205/402 cut-off events. [2024-06-14 12:41:33,669 INFO L125 PetriNetUnfolderBase]: For 4395/4395 co-relation queries the response was YES. [2024-06-14 12:41:33,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 402 events. 205/402 cut-off events. For 4395/4395 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1732 event pairs, 51 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1896. Up to 322 conditions per place. [2024-06-14 12:41:33,676 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 60 selfloop transitions, 20 changer transitions 0/84 dead transitions. [2024-06-14 12:41:33,676 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 84 transitions, 737 flow [2024-06-14 12:41:33,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:33,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:33,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 109 transitions. [2024-06-14 12:41:33,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128787878787879 [2024-06-14 12:41:33,679 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 513 flow. Second operand 8 states and 109 transitions. [2024-06-14 12:41:33,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 84 transitions, 737 flow [2024-06-14 12:41:33,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 84 transitions, 655 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:41:33,693 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 507 flow [2024-06-14 12:41:33,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=507, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-06-14 12:41:33,694 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 51 predicate places. [2024-06-14 12:41:33,694 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 507 flow [2024-06-14 12:41:33,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 12:41:33,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:33,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-14 12:41:33,695 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 12:41:33,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash 687721061, now seen corresponding path program 1 times [2024-06-14 12:41:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:33,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797821466] [2024-06-14 12:41:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:33,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:34,464 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 12:41:34,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:34,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797821466] [2024-06-14 12:41:34,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797821466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:34,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:34,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:34,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2244987] [2024-06-14 12:41:34,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:34,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:34,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:34,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:34,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:34,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:34,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 507 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 12:41:34,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:34,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:34,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:34,756 INFO L124 PetriNetUnfolderBase]: 211/412 cut-off events. [2024-06-14 12:41:34,756 INFO L125 PetriNetUnfolderBase]: For 5000/5000 co-relation queries the response was YES. [2024-06-14 12:41:34,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 412 events. 211/412 cut-off events. For 5000/5000 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1788 event pairs, 46 based on Foata normal form. 2/412 useless extension candidates. Maximal degree in co-relation 1951. Up to 329 conditions per place. [2024-06-14 12:41:34,760 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 69 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-14 12:41:34,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 89 transitions, 751 flow [2024-06-14 12:41:34,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:41:34,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-14 12:41:34,761 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 507 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:41:34,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 89 transitions, 751 flow [2024-06-14 12:41:34,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 89 transitions, 693 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:34,769 INFO L231 Difference]: Finished difference. Result has 86 places, 73 transitions, 514 flow [2024-06-14 12:41:34,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=514, PETRI_PLACES=86, PETRI_TRANSITIONS=73} [2024-06-14 12:41:34,770 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 54 predicate places. [2024-06-14 12:41:34,770 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 73 transitions, 514 flow [2024-06-14 12:41:34,770 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 12:41:34,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:34,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:34,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-14 12:41:34,771 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 12:41:34,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:34,771 INFO L85 PathProgramCache]: Analyzing trace with hash 614112741, now seen corresponding path program 2 times [2024-06-14 12:41:34,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:34,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829868865] [2024-06-14 12:41:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:34,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:35,580 INFO 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 12:41:35,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:35,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829868865] [2024-06-14 12:41:35,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829868865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:35,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:35,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:35,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122287538] [2024-06-14 12:41:35,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:35,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:35,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:35,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:35,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:35,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:35,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 73 transitions, 514 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 12:41:35,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:35,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:35,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:35,914 INFO L124 PetriNetUnfolderBase]: 217/423 cut-off events. [2024-06-14 12:41:35,914 INFO L125 PetriNetUnfolderBase]: For 5603/5605 co-relation queries the response was YES. [2024-06-14 12:41:35,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 423 events. 217/423 cut-off events. For 5603/5605 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1854 event pairs, 55 based on Foata normal form. 2/423 useless extension candidates. Maximal degree in co-relation 2037. Up to 364 conditions per place. [2024-06-14 12:41:35,921 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 67 selfloop transitions, 14 changer transitions 0/85 dead transitions. [2024-06-14 12:41:35,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 85 transitions, 730 flow [2024-06-14 12:41:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-06-14 12:41:35,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3872053872053872 [2024-06-14 12:41:35,925 INFO L175 Difference]: Start difference. First operand has 86 places, 73 transitions, 514 flow. Second operand 9 states and 115 transitions. [2024-06-14 12:41:35,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 85 transitions, 730 flow [2024-06-14 12:41:35,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 681 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:35,934 INFO L231 Difference]: Finished difference. Result has 88 places, 75 transitions, 530 flow [2024-06-14 12:41:35,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=88, PETRI_TRANSITIONS=75} [2024-06-14 12:41:35,934 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 56 predicate places. [2024-06-14 12:41:35,935 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 75 transitions, 530 flow [2024-06-14 12:41:35,935 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 12:41:35,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:35,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:35,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-14 12:41:35,935 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 12:41:35,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:35,936 INFO L85 PathProgramCache]: Analyzing trace with hash 623040741, now seen corresponding path program 3 times [2024-06-14 12:41:35,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:35,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065788472] [2024-06-14 12:41:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:35,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:36,777 INFO 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 12:41:36,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:36,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065788472] [2024-06-14 12:41:36,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065788472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:36,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:36,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273535915] [2024-06-14 12:41:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:36,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:36,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:36,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:36,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:36,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:36,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 75 transitions, 530 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 12:41:36,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:36,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:36,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:37,056 INFO L124 PetriNetUnfolderBase]: 228/440 cut-off events. [2024-06-14 12:41:37,056 INFO L125 PetriNetUnfolderBase]: For 6688/6688 co-relation queries the response was YES. [2024-06-14 12:41:37,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 440 events. 228/440 cut-off events. For 6688/6688 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1948 event pairs, 43 based on Foata normal form. 2/436 useless extension candidates. Maximal degree in co-relation 2196. Up to 274 conditions per place. [2024-06-14 12:41:37,060 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 56 selfloop transitions, 35 changer transitions 0/95 dead transitions. [2024-06-14 12:41:37,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 866 flow [2024-06-14 12:41:37,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:37,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:37,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-14 12:41:37,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:41:37,062 INFO L175 Difference]: Start difference. First operand has 88 places, 75 transitions, 530 flow. Second operand 9 states and 126 transitions. [2024-06-14 12:41:37,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 866 flow [2024-06-14 12:41:37,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 95 transitions, 817 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:37,089 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 624 flow [2024-06-14 12:41:37,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-06-14 12:41:37,089 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 58 predicate places. [2024-06-14 12:41:37,090 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 624 flow [2024-06-14 12:41:37,090 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 12:41:37,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:37,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:37,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-14 12:41:37,091 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 12:41:37,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 613843971, now seen corresponding path program 4 times [2024-06-14 12:41:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:37,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127350361] [2024-06-14 12:41:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:37,904 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 12:41:37,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:37,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127350361] [2024-06-14 12:41:37,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127350361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:37,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:37,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:37,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598664158] [2024-06-14 12:41:37,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:37,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:37,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:37,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:37,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:38,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:38,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 624 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 12:41:38,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:38,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:38,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:38,207 INFO L124 PetriNetUnfolderBase]: 234/450 cut-off events. [2024-06-14 12:41:38,207 INFO L125 PetriNetUnfolderBase]: For 7522/7522 co-relation queries the response was YES. [2024-06-14 12:41:38,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 450 events. 234/450 cut-off events. For 7522/7522 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2011 event pairs, 45 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 2352. Up to 280 conditions per place. [2024-06-14 12:41:38,210 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 58 selfloop transitions, 35 changer transitions 0/97 dead transitions. [2024-06-14 12:41:38,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 97 transitions, 938 flow [2024-06-14 12:41:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:38,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-14 12:41:38,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276094276094276 [2024-06-14 12:41:38,212 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 624 flow. Second operand 9 states and 127 transitions. [2024-06-14 12:41:38,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 97 transitions, 938 flow [2024-06-14 12:41:38,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 874 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:38,222 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 671 flow [2024-06-14 12:41:38,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=671, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-06-14 12:41:38,223 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 62 predicate places. [2024-06-14 12:41:38,223 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 671 flow [2024-06-14 12:41:38,223 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 12:41:38,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:38,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:38,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-14 12:41:38,223 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 12:41:38,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash 357343461, now seen corresponding path program 5 times [2024-06-14 12:41:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:38,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251471777] [2024-06-14 12:41:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:38,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:38,988 INFO 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 12:41:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251471777] [2024-06-14 12:41:38,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251471777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:38,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:38,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:38,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850297804] [2024-06-14 12:41:38,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:38,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:38,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:38,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:38,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:39,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:39,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 671 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 12:41:39,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:39,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:39,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:39,239 INFO L124 PetriNetUnfolderBase]: 230/444 cut-off events. [2024-06-14 12:41:39,239 INFO L125 PetriNetUnfolderBase]: For 7518/7518 co-relation queries the response was YES. [2024-06-14 12:41:39,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 444 events. 230/444 cut-off events. For 7518/7518 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1978 event pairs, 55 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 2337. Up to 277 conditions per place. [2024-06-14 12:41:39,242 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 58 selfloop transitions, 34 changer transitions 0/96 dead transitions. [2024-06-14 12:41:39,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 903 flow [2024-06-14 12:41:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 127 transitions. [2024-06-14 12:41:39,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276094276094276 [2024-06-14 12:41:39,245 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 671 flow. Second operand 9 states and 127 transitions. [2024-06-14 12:41:39,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 903 flow [2024-06-14 12:41:39,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 809 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:39,256 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 650 flow [2024-06-14 12:41:39,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=650, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-14 12:41:39,257 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2024-06-14 12:41:39,257 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 650 flow [2024-06-14 12:41:39,257 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 12:41:39,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:39,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:41:39,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-14 12:41:39,258 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 12:41:39,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:39,258 INFO L85 PathProgramCache]: Analyzing trace with hash 623379075, now seen corresponding path program 1 times [2024-06-14 12:41:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:39,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402424751] [2024-06-14 12:41:39,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:39,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:40,286 INFO 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 12:41:40,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:40,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402424751] [2024-06-14 12:41:40,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402424751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:40,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:40,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:40,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225447234] [2024-06-14 12:41:40,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:40,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:40,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:40,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:40,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:40,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:40,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 650 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:40,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:40,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:40,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:40,595 INFO L124 PetriNetUnfolderBase]: 227/442 cut-off events. [2024-06-14 12:41:40,595 INFO L125 PetriNetUnfolderBase]: For 7364/7366 co-relation queries the response was YES. [2024-06-14 12:41:40,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2310 conditions, 442 events. 227/442 cut-off events. For 7364/7366 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1954 event pairs, 60 based on Foata normal form. 2/442 useless extension candidates. Maximal degree in co-relation 2264. Up to 378 conditions per place. [2024-06-14 12:41:40,599 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 73 selfloop transitions, 15 changer transitions 0/92 dead transitions. [2024-06-14 12:41:40,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 92 transitions, 852 flow [2024-06-14 12:41:40,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:40,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-14 12:41:40,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37575757575757573 [2024-06-14 12:41:40,601 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 650 flow. Second operand 10 states and 124 transitions. [2024-06-14 12:41:40,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 92 transitions, 852 flow [2024-06-14 12:41:40,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 92 transitions, 746 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:40,612 INFO L231 Difference]: Finished difference. Result has 98 places, 81 transitions, 578 flow [2024-06-14 12:41:40,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=578, PETRI_PLACES=98, PETRI_TRANSITIONS=81} [2024-06-14 12:41:40,613 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2024-06-14 12:41:40,613 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 81 transitions, 578 flow [2024-06-14 12:41:40,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:40,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:40,613 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 12:41:40,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-14 12:41:40,614 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 12:41:40,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:40,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2130127641, now seen corresponding path program 1 times [2024-06-14 12:41:40,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:40,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842196757] [2024-06-14 12:41:40,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:40,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:41,553 INFO 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 12:41:41,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:41,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842196757] [2024-06-14 12:41:41,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842196757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:41,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:41,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-14 12:41:41,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209638388] [2024-06-14 12:41:41,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:41,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-14 12:41:41,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:41,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-14 12:41:41,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-14 12:41:41,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:41,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 81 transitions, 578 flow. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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 12:41:41,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:41,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:41,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:41,842 INFO L124 PetriNetUnfolderBase]: 220/442 cut-off events. [2024-06-14 12:41:41,843 INFO L125 PetriNetUnfolderBase]: For 8397/8399 co-relation queries the response was YES. [2024-06-14 12:41:41,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 442 events. 220/442 cut-off events. For 8397/8399 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2022 event pairs, 52 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 2184. Up to 337 conditions per place. [2024-06-14 12:41:41,846 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 71 selfloop transitions, 18 changer transitions 0/99 dead transitions. [2024-06-14 12:41:41,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 99 transitions, 835 flow [2024-06-14 12:41:41,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:41,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:41,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 118 transitions. [2024-06-14 12:41:41,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44696969696969696 [2024-06-14 12:41:41,848 INFO L175 Difference]: Start difference. First operand has 98 places, 81 transitions, 578 flow. Second operand 8 states and 118 transitions. [2024-06-14 12:41:41,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 99 transitions, 835 flow [2024-06-14 12:41:41,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 99 transitions, 795 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:41,859 INFO L231 Difference]: Finished difference. Result has 102 places, 87 transitions, 655 flow [2024-06-14 12:41:41,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=655, PETRI_PLACES=102, PETRI_TRANSITIONS=87} [2024-06-14 12:41:41,860 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2024-06-14 12:41:41,860 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 87 transitions, 655 flow [2024-06-14 12:41:41,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 8 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 12:41:41,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:41,860 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 12:41:41,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-14 12:41:41,861 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 12:41:41,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:41,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1846340377, now seen corresponding path program 2 times [2024-06-14 12:41:41,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:41,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856644123] [2024-06-14 12:41:41,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:41,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:42,723 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 12:41:42,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:42,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856644123] [2024-06-14 12:41:42,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856644123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:42,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:42,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:42,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122741155] [2024-06-14 12:41:42,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:42,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:42,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:42,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:42,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:42,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 87 transitions, 655 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:42,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:42,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:42,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:43,045 INFO L124 PetriNetUnfolderBase]: 224/452 cut-off events. [2024-06-14 12:41:43,045 INFO L125 PetriNetUnfolderBase]: For 9186/9188 co-relation queries the response was YES. [2024-06-14 12:41:43,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 452 events. 224/452 cut-off events. For 9186/9188 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2058 event pairs, 48 based on Foata normal form. 4/454 useless extension candidates. Maximal degree in co-relation 2286. Up to 365 conditions per place. [2024-06-14 12:41:43,049 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 76 selfloop transitions, 15 changer transitions 0/101 dead transitions. [2024-06-14 12:41:43,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 893 flow [2024-06-14 12:41:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:43,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-14 12:41:43,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-14 12:41:43,051 INFO L175 Difference]: Start difference. First operand has 102 places, 87 transitions, 655 flow. Second operand 8 states and 113 transitions. [2024-06-14 12:41:43,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 893 flow [2024-06-14 12:41:43,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 101 transitions, 872 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-06-14 12:41:43,062 INFO L231 Difference]: Finished difference. Result has 110 places, 90 transitions, 698 flow [2024-06-14 12:41:43,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=698, PETRI_PLACES=110, PETRI_TRANSITIONS=90} [2024-06-14 12:41:43,062 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 78 predicate places. [2024-06-14 12:41:43,063 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 90 transitions, 698 flow [2024-06-14 12:41:43,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:43,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:43,063 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 12:41:43,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-14 12:41:43,063 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 12:41:43,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:43,064 INFO L85 PathProgramCache]: Analyzing trace with hash 475607383, now seen corresponding path program 3 times [2024-06-14 12:41:43,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:43,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002625632] [2024-06-14 12:41:43,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:43,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:44,130 INFO 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 12:41:44,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:44,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002625632] [2024-06-14 12:41:44,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002625632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:44,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:44,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:44,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727938432] [2024-06-14 12:41:44,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:44,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:44,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:44,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:44,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:44,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:44,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 90 transitions, 698 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:44,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:44,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:44,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:44,538 INFO L124 PetriNetUnfolderBase]: 231/461 cut-off events. [2024-06-14 12:41:44,538 INFO L125 PetriNetUnfolderBase]: For 9734/9735 co-relation queries the response was YES. [2024-06-14 12:41:44,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 461 events. 231/461 cut-off events. For 9734/9735 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2135 event pairs, 41 based on Foata normal form. 3/458 useless extension candidates. Maximal degree in co-relation 2401. Up to 367 conditions per place. [2024-06-14 12:41:44,543 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 74 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-14 12:41:44,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 103 transitions, 938 flow [2024-06-14 12:41:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-14 12:41:44,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:41:44,545 INFO L175 Difference]: Start difference. First operand has 110 places, 90 transitions, 698 flow. Second operand 9 states and 126 transitions. [2024-06-14 12:41:44,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 103 transitions, 938 flow [2024-06-14 12:41:44,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 103 transitions, 900 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:44,562 INFO L231 Difference]: Finished difference. Result has 115 places, 93 transitions, 739 flow [2024-06-14 12:41:44,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=739, PETRI_PLACES=115, PETRI_TRANSITIONS=93} [2024-06-14 12:41:44,563 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 83 predicate places. [2024-06-14 12:41:44,563 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 93 transitions, 739 flow [2024-06-14 12:41:44,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:44,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:44,564 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 12:41:44,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-14 12:41:44,564 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 12:41:44,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2127265721, now seen corresponding path program 1 times [2024-06-14 12:41:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:44,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910448054] [2024-06-14 12:41:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:44,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:45,568 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 12:41:45,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910448054] [2024-06-14 12:41:45,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910448054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:45,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:45,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:41:45,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306815878] [2024-06-14 12:41:45,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:45,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:41:45,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:41:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:41:45,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:45,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 93 transitions, 739 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 12:41:45,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:45,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:45,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:45,966 INFO L124 PetriNetUnfolderBase]: 245/478 cut-off events. [2024-06-14 12:41:45,966 INFO L125 PetriNetUnfolderBase]: For 9036/9036 co-relation queries the response was YES. [2024-06-14 12:41:45,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2526 conditions, 478 events. 245/478 cut-off events. For 9036/9036 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2206 event pairs, 40 based on Foata normal form. 1/477 useless extension candidates. Maximal degree in co-relation 2467. Up to 390 conditions per place. [2024-06-14 12:41:45,972 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 77 selfloop transitions, 27 changer transitions 0/108 dead transitions. [2024-06-14 12:41:45,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 108 transitions, 1021 flow [2024-06-14 12:41:45,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:45,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:45,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:41:45,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 12:41:45,973 INFO L175 Difference]: Start difference. First operand has 115 places, 93 transitions, 739 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:41:45,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 108 transitions, 1021 flow [2024-06-14 12:41:45,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 108 transitions, 968 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:45,993 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 783 flow [2024-06-14 12:41:45,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=783, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-06-14 12:41:45,995 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 86 predicate places. [2024-06-14 12:41:45,995 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 783 flow [2024-06-14 12:41:45,995 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 12:41:45,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:45,995 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 12:41:45,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-14 12:41:45,996 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 12:41:45,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash -155482601, now seen corresponding path program 1 times [2024-06-14 12:41:45,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:45,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449297062] [2024-06-14 12:41:45,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:45,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:46,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:46,942 INFO 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 12:41:46,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:46,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449297062] [2024-06-14 12:41:46,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449297062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:46,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:46,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:46,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232807432] [2024-06-14 12:41:46,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:46,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:46,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:46,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:46,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:47,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:47,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 783 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:47,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:47,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:47,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:47,323 INFO L124 PetriNetUnfolderBase]: 251/492 cut-off events. [2024-06-14 12:41:47,324 INFO L125 PetriNetUnfolderBase]: For 10156/10156 co-relation queries the response was YES. [2024-06-14 12:41:47,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2619 conditions, 492 events. 251/492 cut-off events. For 10156/10156 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2282 event pairs, 32 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2560. Up to 397 conditions per place. [2024-06-14 12:41:47,329 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 87 selfloop transitions, 22 changer transitions 0/113 dead transitions. [2024-06-14 12:41:47,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 113 transitions, 1093 flow [2024-06-14 12:41:47,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:41:47,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-14 12:41:47,332 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 783 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:41:47,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 113 transitions, 1093 flow [2024-06-14 12:41:47,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 113 transitions, 1014 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:47,353 INFO L231 Difference]: Finished difference. Result has 121 places, 98 transitions, 798 flow [2024-06-14 12:41:47,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=798, PETRI_PLACES=121, PETRI_TRANSITIONS=98} [2024-06-14 12:41:47,353 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 89 predicate places. [2024-06-14 12:41:47,353 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 98 transitions, 798 flow [2024-06-14 12:41:47,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:47,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:47,354 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 12:41:47,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-14 12:41:47,354 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 12:41:47,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1813933737, now seen corresponding path program 4 times [2024-06-14 12:41:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116146434] [2024-06-14 12:41:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:47,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:48,212 INFO 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 12:41:48,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:48,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116146434] [2024-06-14 12:41:48,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116146434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:48,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:48,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:48,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641008377] [2024-06-14 12:41:48,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:48,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:48,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:48,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:48,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:48,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:48,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 98 transitions, 798 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:48,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:48,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:48,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:48,547 INFO L124 PetriNetUnfolderBase]: 239/482 cut-off events. [2024-06-14 12:41:48,547 INFO L125 PetriNetUnfolderBase]: For 11797/11800 co-relation queries the response was YES. [2024-06-14 12:41:48,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2621 conditions, 482 events. 239/482 cut-off events. For 11797/11800 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2255 event pairs, 47 based on Foata normal form. 5/481 useless extension candidates. Maximal degree in co-relation 2561. Up to 384 conditions per place. [2024-06-14 12:41:48,553 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 82 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-06-14 12:41:48,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 110 transitions, 1056 flow [2024-06-14 12:41:48,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-14 12:41:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-14 12:41:48,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 113 transitions. [2024-06-14 12:41:48,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42803030303030304 [2024-06-14 12:41:48,556 INFO L175 Difference]: Start difference. First operand has 121 places, 98 transitions, 798 flow. Second operand 8 states and 113 transitions. [2024-06-14 12:41:48,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 110 transitions, 1056 flow [2024-06-14 12:41:48,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 110 transitions, 984 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:48,576 INFO L231 Difference]: Finished difference. Result has 122 places, 101 transitions, 803 flow [2024-06-14 12:41:48,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=803, PETRI_PLACES=122, PETRI_TRANSITIONS=101} [2024-06-14 12:41:48,576 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 90 predicate places. [2024-06-14 12:41:48,577 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 101 transitions, 803 flow [2024-06-14 12:41:48,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:48,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:48,577 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 12:41:48,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-14 12:41:48,577 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 12:41:48,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2144870295, now seen corresponding path program 2 times [2024-06-14 12:41:48,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:48,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192014655] [2024-06-14 12:41:48,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:49,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:49,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:49,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192014655] [2024-06-14 12:41:49,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192014655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:49,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:49,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:49,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917425694] [2024-06-14 12:41:49,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:49,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:49,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:49,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:49,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 101 transitions, 803 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:49,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:49,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:49,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:50,125 INFO L124 PetriNetUnfolderBase]: 261/511 cut-off events. [2024-06-14 12:41:50,125 INFO L125 PetriNetUnfolderBase]: For 11917/11919 co-relation queries the response was YES. [2024-06-14 12:41:50,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 511 events. 261/511 cut-off events. For 11917/11919 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2370 event pairs, 41 based on Foata normal form. 2/511 useless extension candidates. Maximal degree in co-relation 2749. Up to 435 conditions per place. [2024-06-14 12:41:50,130 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 91 selfloop transitions, 20 changer transitions 0/115 dead transitions. [2024-06-14 12:41:50,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 115 transitions, 1103 flow [2024-06-14 12:41:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:41:50,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:41:50,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-14 12:41:50,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38016528925619836 [2024-06-14 12:41:50,132 INFO L175 Difference]: Start difference. First operand has 122 places, 101 transitions, 803 flow. Second operand 11 states and 138 transitions. [2024-06-14 12:41:50,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 115 transitions, 1103 flow [2024-06-14 12:41:50,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 115 transitions, 1051 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:50,154 INFO L231 Difference]: Finished difference. Result has 128 places, 104 transitions, 850 flow [2024-06-14 12:41:50,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=850, PETRI_PLACES=128, PETRI_TRANSITIONS=104} [2024-06-14 12:41:50,155 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 96 predicate places. [2024-06-14 12:41:50,155 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 104 transitions, 850 flow [2024-06-14 12:41:50,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:50,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:50,155 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 12:41:50,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-14 12:41:50,156 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 12:41:50,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:50,156 INFO L85 PathProgramCache]: Analyzing trace with hash -185809547, now seen corresponding path program 3 times [2024-06-14 12:41:50,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:50,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513545553] [2024-06-14 12:41:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:51,266 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 12:41:51,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:51,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513545553] [2024-06-14 12:41:51,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513545553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:51,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:51,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:51,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571674487] [2024-06-14 12:41:51,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:51,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:51,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:51,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:51,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:51,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:51,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 104 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:51,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:51,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:51,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:51,626 INFO L124 PetriNetUnfolderBase]: 267/518 cut-off events. [2024-06-14 12:41:51,626 INFO L125 PetriNetUnfolderBase]: For 12780/12780 co-relation queries the response was YES. [2024-06-14 12:41:51,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2942 conditions, 518 events. 267/518 cut-off events. For 12780/12780 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2421 event pairs, 45 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 2879. Up to 341 conditions per place. [2024-06-14 12:41:51,629 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 79 selfloop transitions, 39 changer transitions 0/122 dead transitions. [2024-06-14 12:41:51,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 122 transitions, 1228 flow [2024-06-14 12:41:51,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:51,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 12:41:51,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 12:41:51,631 INFO L175 Difference]: Start difference. First operand has 128 places, 104 transitions, 850 flow. Second operand 10 states and 139 transitions. [2024-06-14 12:41:51,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 122 transitions, 1228 flow [2024-06-14 12:41:51,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 122 transitions, 1153 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-14 12:41:51,647 INFO L231 Difference]: Finished difference. Result has 129 places, 107 transitions, 917 flow [2024-06-14 12:41:51,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=917, PETRI_PLACES=129, PETRI_TRANSITIONS=107} [2024-06-14 12:41:51,648 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 97 predicate places. [2024-06-14 12:41:51,648 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 107 transitions, 917 flow [2024-06-14 12:41:51,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:51,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:51,648 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 12:41:51,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-14 12:41:51,649 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 12:41:51,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:51,649 INFO L85 PathProgramCache]: Analyzing trace with hash 936011833, now seen corresponding path program 4 times [2024-06-14 12:41:51,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:51,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153090506] [2024-06-14 12:41:51,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:51,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:51,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:52,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:52,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153090506] [2024-06-14 12:41:52,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153090506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:52,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:52,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:52,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232828639] [2024-06-14 12:41:52,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:52,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:52,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:52,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:52,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:52,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:52,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 107 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:52,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:52,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:52,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:53,097 INFO L124 PetriNetUnfolderBase]: 273/526 cut-off events. [2024-06-14 12:41:53,097 INFO L125 PetriNetUnfolderBase]: For 13855/13855 co-relation queries the response was YES. [2024-06-14 12:41:53,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 526 events. 273/526 cut-off events. For 13855/13855 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2464 event pairs, 45 based on Foata normal form. 2/522 useless extension candidates. Maximal degree in co-relation 3056. Up to 351 conditions per place. [2024-06-14 12:41:53,100 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 79 selfloop transitions, 41 changer transitions 0/124 dead transitions. [2024-06-14 12:41:53,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 124 transitions, 1301 flow [2024-06-14 12:41:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-14 12:41:53,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41818181818181815 [2024-06-14 12:41:53,109 INFO L175 Difference]: Start difference. First operand has 129 places, 107 transitions, 917 flow. Second operand 10 states and 138 transitions. [2024-06-14 12:41:53,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 124 transitions, 1301 flow [2024-06-14 12:41:53,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 124 transitions, 1181 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:53,134 INFO L231 Difference]: Finished difference. Result has 131 places, 110 transitions, 949 flow [2024-06-14 12:41:53,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=949, PETRI_PLACES=131, PETRI_TRANSITIONS=110} [2024-06-14 12:41:53,134 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 99 predicate places. [2024-06-14 12:41:53,134 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 110 transitions, 949 flow [2024-06-14 12:41:53,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:53,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:53,135 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 12:41:53,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-14 12:41:53,135 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 12:41:53,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:53,135 INFO L85 PathProgramCache]: Analyzing trace with hash -539128459, now seen corresponding path program 5 times [2024-06-14 12:41:53,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:53,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245540763] [2024-06-14 12:41:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:53,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:53,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:54,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:54,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:54,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245540763] [2024-06-14 12:41:54,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245540763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:54,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:54,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:41:54,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720889826] [2024-06-14 12:41:54,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:54,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:41:54,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:54,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:41:54,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:41:54,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:41:54,320 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 110 transitions, 949 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:54,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:54,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:41:54,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:54,584 INFO L124 PetriNetUnfolderBase]: 274/528 cut-off events. [2024-06-14 12:41:54,585 INFO L125 PetriNetUnfolderBase]: For 14352/14352 co-relation queries the response was YES. [2024-06-14 12:41:54,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 528 events. 274/528 cut-off events. For 14352/14352 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2467 event pairs, 39 based on Foata normal form. 2/524 useless extension candidates. Maximal degree in co-relation 3101. Up to 353 conditions per place. [2024-06-14 12:41:54,590 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 80 selfloop transitions, 43 changer transitions 0/127 dead transitions. [2024-06-14 12:41:54,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 127 transitions, 1353 flow [2024-06-14 12:41:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:41:54,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:41:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:41:54,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-14 12:41:54,591 INFO L175 Difference]: Start difference. First operand has 131 places, 110 transitions, 949 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:41:54,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 127 transitions, 1353 flow [2024-06-14 12:41:54,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 127 transitions, 1223 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:54,621 INFO L231 Difference]: Finished difference. Result has 133 places, 113 transitions, 981 flow [2024-06-14 12:41:54,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=819, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=981, PETRI_PLACES=133, PETRI_TRANSITIONS=113} [2024-06-14 12:41:54,621 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 101 predicate places. [2024-06-14 12:41:54,622 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 113 transitions, 981 flow [2024-06-14 12:41:54,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:41:54,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:54,622 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 12:41:54,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-14 12:41:54,622 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 12:41:54,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:54,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1281505689, now seen corresponding path program 5 times [2024-06-14 12:41:54,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:54,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42722985] [2024-06-14 12:41:54,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:54,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:55,478 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 12:41:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:55,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42722985] [2024-06-14 12:41:55,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42722985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:55,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:55,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:55,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649389757] [2024-06-14 12:41:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:55,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:55,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:55,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:55,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:55,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 113 transitions, 981 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:55,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:55,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:55,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:55,817 INFO L124 PetriNetUnfolderBase]: 262/526 cut-off events. [2024-06-14 12:41:55,817 INFO L125 PetriNetUnfolderBase]: For 16259/16264 co-relation queries the response was YES. [2024-06-14 12:41:55,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 526 events. 262/526 cut-off events. For 16259/16264 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2503 event pairs, 35 based on Foata normal form. 7/531 useless extension candidates. Maximal degree in co-relation 3054. Up to 422 conditions per place. [2024-06-14 12:41:55,821 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 98 selfloop transitions, 19 changer transitions 0/127 dead transitions. [2024-06-14 12:41:55,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 1267 flow [2024-06-14 12:41:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-14 12:41:55,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-14 12:41:55,822 INFO L175 Difference]: Start difference. First operand has 133 places, 113 transitions, 981 flow. Second operand 9 states and 129 transitions. [2024-06-14 12:41:55,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 1267 flow [2024-06-14 12:41:55,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 127 transitions, 1127 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 12:41:55,848 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 903 flow [2024-06-14 12:41:55,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=903, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2024-06-14 12:41:55,848 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 102 predicate places. [2024-06-14 12:41:55,849 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 903 flow [2024-06-14 12:41:55,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:55,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:55,849 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 12:41:55,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-14 12:41:55,849 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 12:41:55,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:55,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2121687397, now seen corresponding path program 6 times [2024-06-14 12:41:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:55,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267496635] [2024-06-14 12:41:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:56,581 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 12:41:56,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:56,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267496635] [2024-06-14 12:41:56,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267496635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:56,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:56,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:56,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328883482] [2024-06-14 12:41:56,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:56,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:56,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:56,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:56,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:56,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:56,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 903 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:56,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:56,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:56,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:56,927 INFO L124 PetriNetUnfolderBase]: 271/543 cut-off events. [2024-06-14 12:41:56,927 INFO L125 PetriNetUnfolderBase]: For 16354/16356 co-relation queries the response was YES. [2024-06-14 12:41:56,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3120 conditions, 543 events. 271/543 cut-off events. For 16354/16356 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2617 event pairs, 27 based on Foata normal form. 4/545 useless extension candidates. Maximal degree in co-relation 3053. Up to 432 conditions per place. [2024-06-14 12:41:56,930 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 103 selfloop transitions, 20 changer transitions 0/133 dead transitions. [2024-06-14 12:41:56,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 133 transitions, 1229 flow [2024-06-14 12:41:56,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:56,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-14 12:41:56,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-14 12:41:56,934 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 903 flow. Second operand 9 states and 130 transitions. [2024-06-14 12:41:56,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 133 transitions, 1229 flow [2024-06-14 12:41:56,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 133 transitions, 1175 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:41:56,957 INFO L231 Difference]: Finished difference. Result has 138 places, 117 transitions, 948 flow [2024-06-14 12:41:56,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=851, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=948, PETRI_PLACES=138, PETRI_TRANSITIONS=117} [2024-06-14 12:41:56,958 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 106 predicate places. [2024-06-14 12:41:56,958 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 117 transitions, 948 flow [2024-06-14 12:41:56,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:56,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:56,958 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 12:41:56,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-14 12:41:56,959 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 12:41:56,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:56,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1882250765, now seen corresponding path program 7 times [2024-06-14 12:41:56,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:56,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399001423] [2024-06-14 12:41:56,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:56,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:57,720 INFO 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 12:41:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:57,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399001423] [2024-06-14 12:41:57,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399001423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:57,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:57,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:57,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127293684] [2024-06-14 12:41:57,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:57,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:57,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 117 transitions, 948 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:57,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:57,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:57,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:58,162 INFO L124 PetriNetUnfolderBase]: 280/564 cut-off events. [2024-06-14 12:41:58,163 INFO L125 PetriNetUnfolderBase]: For 17352/17354 co-relation queries the response was YES. [2024-06-14 12:41:58,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 564 events. 280/564 cut-off events. For 17352/17354 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2771 event pairs, 30 based on Foata normal form. 4/566 useless extension candidates. Maximal degree in co-relation 3175. Up to 451 conditions per place. [2024-06-14 12:41:58,166 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 105 selfloop transitions, 19 changer transitions 0/134 dead transitions. [2024-06-14 12:41:58,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 134 transitions, 1266 flow [2024-06-14 12:41:58,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:58,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:58,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 130 transitions. [2024-06-14 12:41:58,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2024-06-14 12:41:58,167 INFO L175 Difference]: Start difference. First operand has 138 places, 117 transitions, 948 flow. Second operand 9 states and 130 transitions. [2024-06-14 12:41:58,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 134 transitions, 1266 flow [2024-06-14 12:41:58,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 134 transitions, 1212 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-14 12:41:58,194 INFO L231 Difference]: Finished difference. Result has 143 places, 119 transitions, 972 flow [2024-06-14 12:41:58,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=972, PETRI_PLACES=143, PETRI_TRANSITIONS=119} [2024-06-14 12:41:58,194 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 111 predicate places. [2024-06-14 12:41:58,194 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 119 transitions, 972 flow [2024-06-14 12:41:58,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:58,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:58,195 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 12:41:58,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-14 12:41:58,195 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 12:41:58,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash -2118830437, now seen corresponding path program 8 times [2024-06-14 12:41:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:58,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715926472] [2024-06-14 12:41:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:41:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:41:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:41:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715926472] [2024-06-14 12:41:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715926472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:41:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:41:58,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:41:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763551368] [2024-06-14 12:41:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:41:58,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:41:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:41:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:41:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:41:59,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:41:59,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 119 transitions, 972 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:59,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:41:59,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:41:59,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:41:59,258 INFO L124 PetriNetUnfolderBase]: 284/572 cut-off events. [2024-06-14 12:41:59,258 INFO L125 PetriNetUnfolderBase]: For 18345/18347 co-relation queries the response was YES. [2024-06-14 12:41:59,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3309 conditions, 572 events. 284/572 cut-off events. For 18345/18347 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2840 event pairs, 39 based on Foata normal form. 4/574 useless extension candidates. Maximal degree in co-relation 3237. Up to 468 conditions per place. [2024-06-14 12:41:59,262 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 103 selfloop transitions, 21 changer transitions 0/134 dead transitions. [2024-06-14 12:41:59,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 134 transitions, 1280 flow [2024-06-14 12:41:59,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:41:59,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:41:59,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 129 transitions. [2024-06-14 12:41:59,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-14 12:41:59,263 INFO L175 Difference]: Start difference. First operand has 143 places, 119 transitions, 972 flow. Second operand 9 states and 129 transitions. [2024-06-14 12:41:59,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 134 transitions, 1280 flow [2024-06-14 12:41:59,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 134 transitions, 1222 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:41:59,291 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 986 flow [2024-06-14 12:41:59,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=986, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2024-06-14 12:41:59,292 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-14 12:41:59,292 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 986 flow [2024-06-14 12:41:59,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:41:59,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:41:59,293 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 12:41:59,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-14 12:41:59,293 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 12:41:59,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:41:59,293 INFO L85 PathProgramCache]: Analyzing trace with hash -748153185, now seen corresponding path program 9 times [2024-06-14 12:41:59,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:41:59,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632680926] [2024-06-14 12:41:59,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:41:59,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:41:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:00,149 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 12:42:00,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:00,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632680926] [2024-06-14 12:42:00,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632680926] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:00,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:00,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:42:00,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053352709] [2024-06-14 12:42:00,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:00,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:42:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:00,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:42:00,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:42:00,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 33 [2024-06-14 12:42:00,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 986 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:42:00,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:00,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 33 [2024-06-14 12:42:00,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:00,470 INFO L124 PetriNetUnfolderBase]: 281/567 cut-off events. [2024-06-14 12:42:00,470 INFO L125 PetriNetUnfolderBase]: For 17617/17619 co-relation queries the response was YES. [2024-06-14 12:42:00,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3193 conditions, 567 events. 281/567 cut-off events. For 17617/17619 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2798 event pairs, 24 based on Foata normal form. 4/569 useless extension candidates. Maximal degree in co-relation 3120. Up to 419 conditions per place. [2024-06-14 12:42:00,475 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 103 selfloop transitions, 23 changer transitions 0/136 dead transitions. [2024-06-14 12:42:00,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 1278 flow [2024-06-14 12:42:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-06-14 12:42:00,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43097643097643096 [2024-06-14 12:42:00,477 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 986 flow. Second operand 9 states and 128 transitions. [2024-06-14 12:42:00,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 1278 flow [2024-06-14 12:42:00,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 136 transitions, 1196 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:00,526 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 954 flow [2024-06-14 12:42:00,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=954, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2024-06-14 12:42:00,527 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 114 predicate places. [2024-06-14 12:42:00,527 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 954 flow [2024-06-14 12:42:00,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 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 12:42:00,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:00,528 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 12:42:00,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-14 12:42:00,528 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 12:42:00,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1797136590, now seen corresponding path program 1 times [2024-06-14 12:42:00,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:00,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51187379] [2024-06-14 12:42:00,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:00,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:01,506 INFO 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 12:42:01,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51187379] [2024-06-14 12:42:01,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51187379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:01,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:01,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:01,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078483838] [2024-06-14 12:42:01,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:01,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:01,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:01,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:01,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:01,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:01,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 954 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 12:42:01,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:01,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:01,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:01,884 INFO L124 PetriNetUnfolderBase]: 304/602 cut-off events. [2024-06-14 12:42:01,884 INFO L125 PetriNetUnfolderBase]: For 17857/17857 co-relation queries the response was YES. [2024-06-14 12:42:01,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3347 conditions, 602 events. 304/602 cut-off events. For 17857/17857 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2994 event pairs, 50 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3275. Up to 514 conditions per place. [2024-06-14 12:42:01,888 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 112 selfloop transitions, 20 changer transitions 0/136 dead transitions. [2024-06-14 12:42:01,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 1293 flow [2024-06-14 12:42:01,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:01,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:42:01,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-14 12:42:01,898 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 954 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:42:01,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 1293 flow [2024-06-14 12:42:01,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 136 transitions, 1179 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:01,946 INFO L231 Difference]: Finished difference. Result has 145 places, 125 transitions, 942 flow [2024-06-14 12:42:01,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=840, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=942, PETRI_PLACES=145, PETRI_TRANSITIONS=125} [2024-06-14 12:42:01,947 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 113 predicate places. [2024-06-14 12:42:01,947 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 125 transitions, 942 flow [2024-06-14 12:42:01,947 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 12:42:01,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:01,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:01,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-14 12:42:01,948 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 12:42:01,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:01,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2053145494, now seen corresponding path program 2 times [2024-06-14 12:42:01,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:01,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043347769] [2024-06-14 12:42:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:01,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:02,822 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 12:42:02,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:02,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043347769] [2024-06-14 12:42:02,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043347769] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:02,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:02,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580252901] [2024-06-14 12:42:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:02,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:02,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:02,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:02,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:02,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 125 transitions, 942 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 12:42:02,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:02,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:02,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:03,199 INFO L124 PetriNetUnfolderBase]: 315/623 cut-off events. [2024-06-14 12:42:03,200 INFO L125 PetriNetUnfolderBase]: For 20061/20061 co-relation queries the response was YES. [2024-06-14 12:42:03,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 623 events. 315/623 cut-off events. For 20061/20061 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3116 event pairs, 49 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3389. Up to 512 conditions per place. [2024-06-14 12:42:03,205 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 114 selfloop transitions, 22 changer transitions 0/140 dead transitions. [2024-06-14 12:42:03,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 140 transitions, 1348 flow [2024-06-14 12:42:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:03,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:42:03,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-14 12:42:03,213 INFO L175 Difference]: Start difference. First operand has 145 places, 125 transitions, 942 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:42:03,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 140 transitions, 1348 flow [2024-06-14 12:42:03,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 140 transitions, 1300 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-14 12:42:03,268 INFO L231 Difference]: Finished difference. Result has 150 places, 127 transitions, 968 flow [2024-06-14 12:42:03,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=150, PETRI_TRANSITIONS=127} [2024-06-14 12:42:03,271 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 118 predicate places. [2024-06-14 12:42:03,271 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 127 transitions, 968 flow [2024-06-14 12:42:03,272 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 12:42:03,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:03,272 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 12:42:03,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-14 12:42:03,273 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 12:42:03,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1202526284, now seen corresponding path program 3 times [2024-06-14 12:42:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:03,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244076548] [2024-06-14 12:42:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:03,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:04,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:04,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244076548] [2024-06-14 12:42:04,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244076548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:04,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:04,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:04,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217923930] [2024-06-14 12:42:04,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:04,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:04,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:04,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:04,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:04,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 127 transitions, 968 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 12:42:04,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:04,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:04,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:04,758 INFO L124 PetriNetUnfolderBase]: 312/617 cut-off events. [2024-06-14 12:42:04,759 INFO L125 PetriNetUnfolderBase]: For 19020/19020 co-relation queries the response was YES. [2024-06-14 12:42:04,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3351 conditions, 617 events. 312/617 cut-off events. For 19020/19020 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3081 event pairs, 43 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 3280. Up to 498 conditions per place. [2024-06-14 12:42:04,763 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 102 selfloop transitions, 32 changer transitions 0/138 dead transitions. [2024-06-14 12:42:04,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 138 transitions, 1262 flow [2024-06-14 12:42:04,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:04,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:42:04,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 12:42:04,765 INFO L175 Difference]: Start difference. First operand has 150 places, 127 transitions, 968 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:42:04,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 138 transitions, 1262 flow [2024-06-14 12:42:04,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 138 transitions, 1219 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 12:42:04,815 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 993 flow [2024-06-14 12:42:04,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=993, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2024-06-14 12:42:04,816 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 122 predicate places. [2024-06-14 12:42:04,816 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 993 flow [2024-06-14 12:42:04,816 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 12:42:04,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:04,817 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 12:42:04,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-14 12:42:04,817 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 12:42:04,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:04,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1520732906, now seen corresponding path program 4 times [2024-06-14 12:42:04,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:04,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247629574] [2024-06-14 12:42:04,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:04,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:05,888 INFO 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 12:42:05,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:05,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247629574] [2024-06-14 12:42:05,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247629574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:05,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:05,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:42:05,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857111395] [2024-06-14 12:42:05,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:05,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:42:05,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:05,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:42:05,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:42:05,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:05,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 993 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:05,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:05,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:05,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:06,198 INFO L124 PetriNetUnfolderBase]: 319/629 cut-off events. [2024-06-14 12:42:06,198 INFO L125 PetriNetUnfolderBase]: For 19754/19754 co-relation queries the response was YES. [2024-06-14 12:42:06,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3451 conditions, 629 events. 319/629 cut-off events. For 19754/19754 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3190 event pairs, 49 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3378. Up to 538 conditions per place. [2024-06-14 12:42:06,203 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 115 selfloop transitions, 22 changer transitions 0/141 dead transitions. [2024-06-14 12:42:06,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 141 transitions, 1323 flow [2024-06-14 12:42:06,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:06,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:06,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-14 12:42:06,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2024-06-14 12:42:06,205 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 993 flow. Second operand 9 states and 121 transitions. [2024-06-14 12:42:06,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 141 transitions, 1323 flow [2024-06-14 12:42:06,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 141 transitions, 1253 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:06,256 INFO L231 Difference]: Finished difference. Result has 156 places, 130 transitions, 1008 flow [2024-06-14 12:42:06,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=925, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1008, PETRI_PLACES=156, PETRI_TRANSITIONS=130} [2024-06-14 12:42:06,257 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 124 predicate places. [2024-06-14 12:42:06,257 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 130 transitions, 1008 flow [2024-06-14 12:42:06,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:06,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:06,257 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 12:42:06,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-14 12:42:06,258 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 12:42:06,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:06,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1858927880, now seen corresponding path program 5 times [2024-06-14 12:42:06,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:06,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590821723] [2024-06-14 12:42:06,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:07,138 INFO 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 12:42:07,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:07,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590821723] [2024-06-14 12:42:07,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590821723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:07,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:07,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:07,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45425395] [2024-06-14 12:42:07,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:07,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:07,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:07,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 130 transitions, 1008 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 12:42:07,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:07,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:07,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:07,501 INFO L124 PetriNetUnfolderBase]: 330/652 cut-off events. [2024-06-14 12:42:07,501 INFO L125 PetriNetUnfolderBase]: For 22544/22544 co-relation queries the response was YES. [2024-06-14 12:42:07,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3656 conditions, 652 events. 330/652 cut-off events. For 22544/22544 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3309 event pairs, 49 based on Foata normal form. 2/652 useless extension candidates. Maximal degree in co-relation 3582. Up to 505 conditions per place. [2024-06-14 12:42:07,505 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 113 selfloop transitions, 30 changer transitions 0/147 dead transitions. [2024-06-14 12:42:07,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 147 transitions, 1448 flow [2024-06-14 12:42:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-06-14 12:42:07,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 12:42:07,507 INFO L175 Difference]: Start difference. First operand has 156 places, 130 transitions, 1008 flow. Second operand 9 states and 123 transitions. [2024-06-14 12:42:07,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 147 transitions, 1448 flow [2024-06-14 12:42:07,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 147 transitions, 1397 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-14 12:42:07,551 INFO L231 Difference]: Finished difference. Result has 159 places, 132 transitions, 1057 flow [2024-06-14 12:42:07,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1057, PETRI_PLACES=159, PETRI_TRANSITIONS=132} [2024-06-14 12:42:07,552 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 127 predicate places. [2024-06-14 12:42:07,552 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 132 transitions, 1057 flow [2024-06-14 12:42:07,552 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 12:42:07,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:07,553 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 12:42:07,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-14 12:42:07,553 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 12:42:07,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:07,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1609446536, now seen corresponding path program 6 times [2024-06-14 12:42:07,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:07,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576019542] [2024-06-14 12:42:07,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:07,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:08,499 INFO 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 12:42:08,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:08,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576019542] [2024-06-14 12:42:08,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576019542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:08,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:08,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:08,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087167691] [2024-06-14 12:42:08,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:08,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:08,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:08,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:08,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:08,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 132 transitions, 1057 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 12:42:08,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:08,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:08,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:08,855 INFO L124 PetriNetUnfolderBase]: 334/660 cut-off events. [2024-06-14 12:42:08,856 INFO L125 PetriNetUnfolderBase]: For 23672/23672 co-relation queries the response was YES. [2024-06-14 12:42:08,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 660 events. 334/660 cut-off events. For 23672/23672 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3351 event pairs, 38 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 3672. Up to 482 conditions per place. [2024-06-14 12:42:08,860 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 26 changer transitions 0/148 dead transitions. [2024-06-14 12:42:08,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 148 transitions, 1399 flow [2024-06-14 12:42:08,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:08,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:08,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:42:08,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-14 12:42:08,861 INFO L175 Difference]: Start difference. First operand has 159 places, 132 transitions, 1057 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:42:08,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 148 transitions, 1399 flow [2024-06-14 12:42:08,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 148 transitions, 1348 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-14 12:42:08,911 INFO L231 Difference]: Finished difference. Result has 163 places, 133 transitions, 1085 flow [2024-06-14 12:42:08,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1085, PETRI_PLACES=163, PETRI_TRANSITIONS=133} [2024-06-14 12:42:08,911 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 131 predicate places. [2024-06-14 12:42:08,912 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 133 transitions, 1085 flow [2024-06-14 12:42:08,912 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 12:42:08,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:08,912 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 12:42:08,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-14 12:42:08,912 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 12:42:08,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:08,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1501028624, now seen corresponding path program 1 times [2024-06-14 12:42:08,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:08,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33465656] [2024-06-14 12:42:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:08,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:09,889 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 12:42:09,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:09,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33465656] [2024-06-14 12:42:09,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33465656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:09,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:09,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:09,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474643466] [2024-06-14 12:42:09,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:09,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:09,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:09,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:09,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:09,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:09,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 133 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:09,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:09,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:09,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:10,171 INFO L124 PetriNetUnfolderBase]: 340/668 cut-off events. [2024-06-14 12:42:10,172 INFO L125 PetriNetUnfolderBase]: For 23866/23866 co-relation queries the response was YES. [2024-06-14 12:42:10,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3858 conditions, 668 events. 340/668 cut-off events. For 23866/23866 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3422 event pairs, 52 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 3781. Up to 577 conditions per place. [2024-06-14 12:42:10,176 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 119 selfloop transitions, 25 changer transitions 0/148 dead transitions. [2024-06-14 12:42:10,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 148 transitions, 1457 flow [2024-06-14 12:42:10,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:10,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:42:10,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:42:10,177 INFO L175 Difference]: Start difference. First operand has 163 places, 133 transitions, 1085 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:42:10,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 148 transitions, 1457 flow [2024-06-14 12:42:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 148 transitions, 1394 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:42:10,224 INFO L231 Difference]: Finished difference. Result has 167 places, 137 transitions, 1144 flow [2024-06-14 12:42:10,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1144, PETRI_PLACES=167, PETRI_TRANSITIONS=137} [2024-06-14 12:42:10,224 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 135 predicate places. [2024-06-14 12:42:10,225 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 137 transitions, 1144 flow [2024-06-14 12:42:10,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:10,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:10,225 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 12:42:10,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-14 12:42:10,225 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 12:42:10,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2110050492, now seen corresponding path program 1 times [2024-06-14 12:42:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:10,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017185719] [2024-06-14 12:42:10,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:10,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:10,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:11,211 INFO 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 12:42:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017185719] [2024-06-14 12:42:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017185719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:11,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:11,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144785434] [2024-06-14 12:42:11,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:11,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:11,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:11,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:11,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:11,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:11,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 137 transitions, 1144 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:11,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:11,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:11,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:11,674 INFO L124 PetriNetUnfolderBase]: 360/716 cut-off events. [2024-06-14 12:42:11,675 INFO L125 PetriNetUnfolderBase]: For 36325/36325 co-relation queries the response was YES. [2024-06-14 12:42:11,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 716 events. 360/716 cut-off events. For 36325/36325 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3694 event pairs, 69 based on Foata normal form. 12/726 useless extension candidates. Maximal degree in co-relation 4038. Up to 560 conditions per place. [2024-06-14 12:42:11,680 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 122 selfloop transitions, 24 changer transitions 7/157 dead transitions. [2024-06-14 12:42:11,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 157 transitions, 1602 flow [2024-06-14 12:42:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:42:11,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-14 12:42:11,681 INFO L175 Difference]: Start difference. First operand has 167 places, 137 transitions, 1144 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:42:11,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 157 transitions, 1602 flow [2024-06-14 12:42:11,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 157 transitions, 1514 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-14 12:42:11,737 INFO L231 Difference]: Finished difference. Result has 171 places, 136 transitions, 1119 flow [2024-06-14 12:42:11,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1119, PETRI_PLACES=171, PETRI_TRANSITIONS=136} [2024-06-14 12:42:11,738 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 139 predicate places. [2024-06-14 12:42:11,738 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 136 transitions, 1119 flow [2024-06-14 12:42:11,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:11,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:11,739 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 12:42:11,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-14 12:42:11,739 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 12:42:11,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2010622544, now seen corresponding path program 7 times [2024-06-14 12:42:11,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:11,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908618750] [2024-06-14 12:42:11,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:11,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:12,568 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 12:42:12,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908618750] [2024-06-14 12:42:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908618750] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:12,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:12,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:12,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490723307] [2024-06-14 12:42:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:12,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:12,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:12,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 136 transitions, 1119 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 12:42:12,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:12,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:12,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:12,894 INFO L124 PetriNetUnfolderBase]: 355/705 cut-off events. [2024-06-14 12:42:12,894 INFO L125 PetriNetUnfolderBase]: For 27643/27643 co-relation queries the response was YES. [2024-06-14 12:42:12,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 705 events. 355/705 cut-off events. For 27643/27643 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3688 event pairs, 69 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 4039. Up to 592 conditions per place. [2024-06-14 12:42:12,899 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 116 selfloop transitions, 30 changer transitions 0/150 dead transitions. [2024-06-14 12:42:12,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 150 transitions, 1505 flow [2024-06-14 12:42:12,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:12,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:42:12,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-14 12:42:12,900 INFO L175 Difference]: Start difference. First operand has 171 places, 136 transitions, 1119 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:42:12,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 150 transitions, 1505 flow [2024-06-14 12:42:12,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 150 transitions, 1453 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:12,959 INFO L231 Difference]: Finished difference. Result has 173 places, 140 transitions, 1194 flow [2024-06-14 12:42:12,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1194, PETRI_PLACES=173, PETRI_TRANSITIONS=140} [2024-06-14 12:42:12,959 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 141 predicate places. [2024-06-14 12:42:12,959 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 140 transitions, 1194 flow [2024-06-14 12:42:12,960 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 12:42:12,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:12,960 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 12:42:12,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-14 12:42:12,960 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 12:42:12,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:12,960 INFO L85 PathProgramCache]: Analyzing trace with hash -397222234, now seen corresponding path program 8 times [2024-06-14 12:42:12,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:12,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474068990] [2024-06-14 12:42:12,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:12,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:12,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:13,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:13,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474068990] [2024-06-14 12:42:13,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474068990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:13,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:13,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:13,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870547021] [2024-06-14 12:42:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:13,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:13,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 140 transitions, 1194 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 12:42:13,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:13,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:13,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:14,169 INFO L124 PetriNetUnfolderBase]: 359/713 cut-off events. [2024-06-14 12:42:14,169 INFO L125 PetriNetUnfolderBase]: For 29014/29014 co-relation queries the response was YES. [2024-06-14 12:42:14,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4240 conditions, 713 events. 359/713 cut-off events. For 29014/29014 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3744 event pairs, 71 based on Foata normal form. 2/709 useless extension candidates. Maximal degree in co-relation 4158. Up to 600 conditions per place. [2024-06-14 12:42:14,173 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 31 changer transitions 0/153 dead transitions. [2024-06-14 12:42:14,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 153 transitions, 1575 flow [2024-06-14 12:42:14,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-14 12:42:14,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 12:42:14,174 INFO L175 Difference]: Start difference. First operand has 173 places, 140 transitions, 1194 flow. Second operand 9 states and 120 transitions. [2024-06-14 12:42:14,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 153 transitions, 1575 flow [2024-06-14 12:42:14,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 153 transitions, 1466 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:14,239 INFO L231 Difference]: Finished difference. Result has 175 places, 144 transitions, 1225 flow [2024-06-14 12:42:14,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1225, PETRI_PLACES=175, PETRI_TRANSITIONS=144} [2024-06-14 12:42:14,239 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 143 predicate places. [2024-06-14 12:42:14,240 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 144 transitions, 1225 flow [2024-06-14 12:42:14,240 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 12:42:14,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:14,240 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 12:42:14,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-14 12:42:14,240 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 12:42:14,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:14,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1672211734, now seen corresponding path program 9 times [2024-06-14 12:42:14,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:14,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981638778] [2024-06-14 12:42:14,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:14,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:15,183 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 12:42:15,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:15,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981638778] [2024-06-14 12:42:15,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981638778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:15,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:15,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:15,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025139898] [2024-06-14 12:42:15,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:15,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:15,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:15,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:15,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 144 transitions, 1225 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 12:42:15,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:15,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:15,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:15,516 INFO L124 PetriNetUnfolderBase]: 363/719 cut-off events. [2024-06-14 12:42:15,517 INFO L125 PetriNetUnfolderBase]: For 30328/30328 co-relation queries the response was YES. [2024-06-14 12:42:15,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4281 conditions, 719 events. 363/719 cut-off events. For 30328/30328 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3783 event pairs, 67 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4199. Up to 579 conditions per place. [2024-06-14 12:42:15,521 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 34 changer transitions 0/156 dead transitions. [2024-06-14 12:42:15,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 156 transitions, 1675 flow [2024-06-14 12:42:15,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:15,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:15,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 122 transitions. [2024-06-14 12:42:15,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107744107744108 [2024-06-14 12:42:15,522 INFO L175 Difference]: Start difference. First operand has 175 places, 144 transitions, 1225 flow. Second operand 9 states and 122 transitions. [2024-06-14 12:42:15,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 156 transitions, 1675 flow [2024-06-14 12:42:15,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 156 transitions, 1596 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-14 12:42:15,581 INFO L231 Difference]: Finished difference. Result has 180 places, 145 transitions, 1242 flow [2024-06-14 12:42:15,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1146, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1242, PETRI_PLACES=180, PETRI_TRANSITIONS=145} [2024-06-14 12:42:15,582 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 148 predicate places. [2024-06-14 12:42:15,582 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 145 transitions, 1242 flow [2024-06-14 12:42:15,582 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 12:42:15,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:15,582 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 12:42:15,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-14 12:42:15,582 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 12:42:15,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash 211092164, now seen corresponding path program 10 times [2024-06-14 12:42:15,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:15,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607057170] [2024-06-14 12:42:15,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:15,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:16,431 INFO 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 12:42:16,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:16,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607057170] [2024-06-14 12:42:16,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607057170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:16,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:16,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:16,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483976359] [2024-06-14 12:42:16,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:16,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:16,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:16,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:16,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:16,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:16,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 145 transitions, 1242 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 12:42:16,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:16,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:16,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:16,797 INFO L124 PetriNetUnfolderBase]: 360/714 cut-off events. [2024-06-14 12:42:16,797 INFO L125 PetriNetUnfolderBase]: For 28433/28433 co-relation queries the response was YES. [2024-06-14 12:42:16,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 714 events. 360/714 cut-off events. For 28433/28433 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3750 event pairs, 68 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 4039. Up to 603 conditions per place. [2024-06-14 12:42:16,801 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 118 selfloop transitions, 32 changer transitions 0/154 dead transitions. [2024-06-14 12:42:16,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 154 transitions, 1562 flow [2024-06-14 12:42:16,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:16,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-14 12:42:16,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006734006734007 [2024-06-14 12:42:16,802 INFO L175 Difference]: Start difference. First operand has 180 places, 145 transitions, 1242 flow. Second operand 9 states and 119 transitions. [2024-06-14 12:42:16,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 154 transitions, 1562 flow [2024-06-14 12:42:16,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 154 transitions, 1440 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:16,872 INFO L231 Difference]: Finished difference. Result has 181 places, 145 transitions, 1188 flow [2024-06-14 12:42:16,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1120, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1188, PETRI_PLACES=181, PETRI_TRANSITIONS=145} [2024-06-14 12:42:16,872 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-14 12:42:16,872 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 145 transitions, 1188 flow [2024-06-14 12:42:16,873 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 12:42:16,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:16,873 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 12:42:16,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-14 12:42:16,873 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 12:42:16,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:16,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2002988112, now seen corresponding path program 2 times [2024-06-14 12:42:16,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:16,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117893561] [2024-06-14 12:42:16,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:16,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:17,978 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 12:42:17,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:17,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117893561] [2024-06-14 12:42:17,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117893561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:17,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:17,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:17,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054168756] [2024-06-14 12:42:17,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:17,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:17,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:17,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:17,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:18,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:18,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 145 transitions, 1188 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:18,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:18,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:18,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:18,373 INFO L124 PetriNetUnfolderBase]: 380/762 cut-off events. [2024-06-14 12:42:18,373 INFO L125 PetriNetUnfolderBase]: For 41711/41711 co-relation queries the response was YES. [2024-06-14 12:42:18,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4252 conditions, 762 events. 380/762 cut-off events. For 41711/41711 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4072 event pairs, 72 based on Foata normal form. 12/768 useless extension candidates. Maximal degree in co-relation 4170. Up to 521 conditions per place. [2024-06-14 12:42:18,378 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 113 selfloop transitions, 41 changer transitions 7/165 dead transitions. [2024-06-14 12:42:18,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 165 transitions, 1712 flow [2024-06-14 12:42:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 154 transitions. [2024-06-14 12:42:18,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:42:18,379 INFO L175 Difference]: Start difference. First operand has 181 places, 145 transitions, 1188 flow. Second operand 11 states and 154 transitions. [2024-06-14 12:42:18,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 165 transitions, 1712 flow [2024-06-14 12:42:18,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 165 transitions, 1600 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:18,445 INFO L231 Difference]: Finished difference. Result has 182 places, 144 transitions, 1179 flow [2024-06-14 12:42:18,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1179, PETRI_PLACES=182, PETRI_TRANSITIONS=144} [2024-06-14 12:42:18,445 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 150 predicate places. [2024-06-14 12:42:18,445 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 144 transitions, 1179 flow [2024-06-14 12:42:18,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:18,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:18,446 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 12:42:18,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-14 12:42:18,447 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 12:42:18,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash 573040832, now seen corresponding path program 3 times [2024-06-14 12:42:18,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:18,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932812850] [2024-06-14 12:42:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:19,622 INFO 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 12:42:19,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:19,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932812850] [2024-06-14 12:42:19,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932812850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:19,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:19,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:19,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206029848] [2024-06-14 12:42:19,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:19,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:19,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:19,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:19,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:19,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 144 transitions, 1179 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:19,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:19,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:19,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:20,028 INFO L124 PetriNetUnfolderBase]: 388/780 cut-off events. [2024-06-14 12:42:20,028 INFO L125 PetriNetUnfolderBase]: For 43989/43989 co-relation queries the response was YES. [2024-06-14 12:42:20,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4395 conditions, 780 events. 388/780 cut-off events. For 43989/43989 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4185 event pairs, 74 based on Foata normal form. 12/786 useless extension candidates. Maximal degree in co-relation 4314. Up to 545 conditions per place. [2024-06-14 12:42:20,032 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 112 selfloop transitions, 41 changer transitions 7/164 dead transitions. [2024-06-14 12:42:20,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 164 transitions, 1709 flow [2024-06-14 12:42:20,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-14 12:42:20,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214876033057851 [2024-06-14 12:42:20,034 INFO L175 Difference]: Start difference. First operand has 182 places, 144 transitions, 1179 flow. Second operand 11 states and 153 transitions. [2024-06-14 12:42:20,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 164 transitions, 1709 flow [2024-06-14 12:42:20,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 164 transitions, 1619 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:20,092 INFO L231 Difference]: Finished difference. Result has 184 places, 143 transitions, 1192 flow [2024-06-14 12:42:20,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1192, PETRI_PLACES=184, PETRI_TRANSITIONS=143} [2024-06-14 12:42:20,092 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 152 predicate places. [2024-06-14 12:42:20,093 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 143 transitions, 1192 flow [2024-06-14 12:42:20,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:20,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:20,093 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 12:42:20,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-14 12:42:20,093 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 12:42:20,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:20,094 INFO L85 PathProgramCache]: Analyzing trace with hash 780587204, now seen corresponding path program 4 times [2024-06-14 12:42:20,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:20,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799341148] [2024-06-14 12:42:20,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:20,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:21,235 INFO 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 12:42:21,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:21,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799341148] [2024-06-14 12:42:21,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799341148] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:21,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:21,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:21,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663673895] [2024-06-14 12:42:21,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:21,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:21,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:21,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:21,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:21,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:21,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 143 transitions, 1192 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:21,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:21,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:21,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:21,700 INFO L124 PetriNetUnfolderBase]: 399/814 cut-off events. [2024-06-14 12:42:21,700 INFO L125 PetriNetUnfolderBase]: For 46616/46616 co-relation queries the response was YES. [2024-06-14 12:42:21,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4607 conditions, 814 events. 399/814 cut-off events. For 46616/46616 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4439 event pairs, 91 based on Foata normal form. 12/824 useless extension candidates. Maximal degree in co-relation 4525. Up to 689 conditions per place. [2024-06-14 12:42:21,705 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 134 selfloop transitions, 17 changer transitions 7/162 dead transitions. [2024-06-14 12:42:21,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 162 transitions, 1658 flow [2024-06-14 12:42:21,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:21,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:21,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:42:21,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:42:21,706 INFO L175 Difference]: Start difference. First operand has 184 places, 143 transitions, 1192 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:42:21,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 162 transitions, 1658 flow [2024-06-14 12:42:21,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 162 transitions, 1566 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:21,776 INFO L231 Difference]: Finished difference. Result has 187 places, 144 transitions, 1172 flow [2024-06-14 12:42:21,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1100, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1172, PETRI_PLACES=187, PETRI_TRANSITIONS=144} [2024-06-14 12:42:21,776 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2024-06-14 12:42:21,777 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 144 transitions, 1172 flow [2024-06-14 12:42:21,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:21,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:21,777 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 12:42:21,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-14 12:42:21,777 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 12:42:21,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:21,777 INFO L85 PathProgramCache]: Analyzing trace with hash 466887974, now seen corresponding path program 5 times [2024-06-14 12:42:21,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:21,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397893008] [2024-06-14 12:42:21,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:21,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:22,776 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 12:42:22,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:22,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397893008] [2024-06-14 12:42:22,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397893008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:22,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:22,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:22,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772832412] [2024-06-14 12:42:22,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:22,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:22,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:22,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:22,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:22,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:22,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 144 transitions, 1172 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:22,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:22,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:22,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:23,195 INFO L124 PetriNetUnfolderBase]: 407/835 cut-off events. [2024-06-14 12:42:23,195 INFO L125 PetriNetUnfolderBase]: For 49091/49091 co-relation queries the response was YES. [2024-06-14 12:42:23,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 835 events. 407/835 cut-off events. For 49091/49091 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4619 event pairs, 82 based on Foata normal form. 12/841 useless extension candidates. Maximal degree in co-relation 4665. Up to 598 conditions per place. [2024-06-14 12:42:23,201 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 107 selfloop transitions, 45 changer transitions 7/163 dead transitions. [2024-06-14 12:42:23,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 163 transitions, 1692 flow [2024-06-14 12:42:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 12:42:23,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-14 12:42:23,202 INFO L175 Difference]: Start difference. First operand has 187 places, 144 transitions, 1172 flow. Second operand 11 states and 152 transitions. [2024-06-14 12:42:23,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 163 transitions, 1692 flow [2024-06-14 12:42:23,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 163 transitions, 1649 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:23,273 INFO L231 Difference]: Finished difference. Result has 190 places, 143 transitions, 1244 flow [2024-06-14 12:42:23,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1244, PETRI_PLACES=190, PETRI_TRANSITIONS=143} [2024-06-14 12:42:23,273 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 158 predicate places. [2024-06-14 12:42:23,274 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 143 transitions, 1244 flow [2024-06-14 12:42:23,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:23,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:23,274 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 12:42:23,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-14 12:42:23,274 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 12:42:23,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash 2066470724, now seen corresponding path program 6 times [2024-06-14 12:42:23,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:23,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900149847] [2024-06-14 12:42:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:23,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:24,229 INFO 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 12:42:24,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:24,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900149847] [2024-06-14 12:42:24,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900149847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:24,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:24,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:24,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335679375] [2024-06-14 12:42:24,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:24,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:24,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:24,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:24,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:24,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:24,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 143 transitions, 1244 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:24,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:24,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:24,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:24,704 INFO L124 PetriNetUnfolderBase]: 399/832 cut-off events. [2024-06-14 12:42:24,704 INFO L125 PetriNetUnfolderBase]: For 37464/37464 co-relation queries the response was YES. [2024-06-14 12:42:24,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4834 conditions, 832 events. 399/832 cut-off events. For 37464/37464 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4666 event pairs, 99 based on Foata normal form. 2/832 useless extension candidates. Maximal degree in co-relation 4749. Up to 743 conditions per place. [2024-06-14 12:42:24,709 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 131 selfloop transitions, 21 changer transitions 3/159 dead transitions. [2024-06-14 12:42:24,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 159 transitions, 1659 flow [2024-06-14 12:42:24,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:24,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:42:24,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:42:24,710 INFO L175 Difference]: Start difference. First operand has 190 places, 143 transitions, 1244 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:42:24,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 159 transitions, 1659 flow [2024-06-14 12:42:24,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 159 transitions, 1553 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:24,785 INFO L231 Difference]: Finished difference. Result has 194 places, 144 transitions, 1222 flow [2024-06-14 12:42:24,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1222, PETRI_PLACES=194, PETRI_TRANSITIONS=144} [2024-06-14 12:42:24,785 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 162 predicate places. [2024-06-14 12:42:24,785 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 144 transitions, 1222 flow [2024-06-14 12:42:24,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:24,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:24,786 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 12:42:24,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-14 12:42:24,786 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 12:42:24,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:24,786 INFO L85 PathProgramCache]: Analyzing trace with hash 792015044, now seen corresponding path program 7 times [2024-06-14 12:42:24,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:24,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565539546] [2024-06-14 12:42:24,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:24,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:25,836 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 12:42:25,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:25,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565539546] [2024-06-14 12:42:25,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565539546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:25,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:25,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770383393] [2024-06-14 12:42:25,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:25,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:25,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:25,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:25,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:25,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:25,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 144 transitions, 1222 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:25,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:25,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:25,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:26,310 INFO L124 PetriNetUnfolderBase]: 384/795 cut-off events. [2024-06-14 12:42:26,311 INFO L125 PetriNetUnfolderBase]: For 34681/34681 co-relation queries the response was YES. [2024-06-14 12:42:26,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4485 conditions, 795 events. 384/795 cut-off events. For 34681/34681 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4353 event pairs, 92 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 4398. Up to 690 conditions per place. [2024-06-14 12:42:26,318 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 131 selfloop transitions, 23 changer transitions 0/158 dead transitions. [2024-06-14 12:42:26,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 158 transitions, 1592 flow [2024-06-14 12:42:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:42:26,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-14 12:42:26,321 INFO L175 Difference]: Start difference. First operand has 194 places, 144 transitions, 1222 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:42:26,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 158 transitions, 1592 flow [2024-06-14 12:42:26,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 158 transitions, 1504 flow, removed 21 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:26,434 INFO L231 Difference]: Finished difference. Result has 195 places, 145 transitions, 1220 flow [2024-06-14 12:42:26,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1220, PETRI_PLACES=195, PETRI_TRANSITIONS=145} [2024-06-14 12:42:26,434 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-14 12:42:26,435 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 145 transitions, 1220 flow [2024-06-14 12:42:26,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:26,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:26,435 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 12:42:26,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-14 12:42:26,435 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 12:42:26,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:26,439 INFO L85 PathProgramCache]: Analyzing trace with hash -795019422, now seen corresponding path program 11 times [2024-06-14 12:42:26,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:26,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85185343] [2024-06-14 12:42:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:26,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:27,471 INFO 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 12:42:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85185343] [2024-06-14 12:42:27,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85185343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:27,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:27,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-14 12:42:27,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973122055] [2024-06-14 12:42:27,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-14 12:42:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-14 12:42:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-14 12:42:27,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:27,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 145 transitions, 1220 flow. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:27,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:27,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:27,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:27,778 INFO L124 PetriNetUnfolderBase]: 391/809 cut-off events. [2024-06-14 12:42:27,778 INFO L125 PetriNetUnfolderBase]: For 35640/35640 co-relation queries the response was YES. [2024-06-14 12:42:27,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4506 conditions, 809 events. 391/809 cut-off events. For 35640/35640 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4475 event pairs, 69 based on Foata normal form. 2/809 useless extension candidates. Maximal degree in co-relation 4419. Up to 714 conditions per place. [2024-06-14 12:42:27,782 INFO L140 encePairwiseOnDemand]: 24/33 looper letters, 137 selfloop transitions, 21 changer transitions 0/162 dead transitions. [2024-06-14 12:42:27,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 162 transitions, 1602 flow [2024-06-14 12:42:27,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-14 12:42:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-14 12:42:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-06-14 12:42:27,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175084175084175 [2024-06-14 12:42:27,783 INFO L175 Difference]: Start difference. First operand has 195 places, 145 transitions, 1220 flow. Second operand 9 states and 124 transitions. [2024-06-14 12:42:27,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 162 transitions, 1602 flow [2024-06-14 12:42:27,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 162 transitions, 1526 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-14 12:42:27,866 INFO L231 Difference]: Finished difference. Result has 195 places, 148 transitions, 1229 flow [2024-06-14 12:42:27,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=195, PETRI_TRANSITIONS=148} [2024-06-14 12:42:27,866 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2024-06-14 12:42:27,866 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 148 transitions, 1229 flow [2024-06-14 12:42:27,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:27,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:27,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:27,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-14 12:42:27,867 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 12:42:27,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:27,867 INFO L85 PathProgramCache]: Analyzing trace with hash -907439592, now seen corresponding path program 2 times [2024-06-14 12:42:27,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:27,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992317737] [2024-06-14 12:42:27,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:27,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:28,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:28,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992317737] [2024-06-14 12:42:28,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992317737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:28,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:28,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:28,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113279136] [2024-06-14 12:42:28,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:28,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:28,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:28,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:28,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:29,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:29,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 148 transitions, 1229 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:29,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:29,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:29,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:29,412 INFO L124 PetriNetUnfolderBase]: 397/817 cut-off events. [2024-06-14 12:42:29,412 INFO L125 PetriNetUnfolderBase]: For 34779/34779 co-relation queries the response was YES. [2024-06-14 12:42:29,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4547 conditions, 817 events. 397/817 cut-off events. For 34779/34779 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4511 event pairs, 69 based on Foata normal form. 1/816 useless extension candidates. Maximal degree in co-relation 4459. Up to 724 conditions per place. [2024-06-14 12:42:29,417 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 137 selfloop transitions, 25 changer transitions 0/166 dead transitions. [2024-06-14 12:42:29,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 166 transitions, 1651 flow [2024-06-14 12:42:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:29,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:29,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:42:29,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:42:29,421 INFO L175 Difference]: Start difference. First operand has 195 places, 148 transitions, 1229 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:42:29,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 166 transitions, 1651 flow [2024-06-14 12:42:29,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 166 transitions, 1600 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-14 12:42:29,494 INFO L231 Difference]: Finished difference. Result has 201 places, 152 transitions, 1306 flow [2024-06-14 12:42:29,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1178, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1306, PETRI_PLACES=201, PETRI_TRANSITIONS=152} [2024-06-14 12:42:29,494 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 169 predicate places. [2024-06-14 12:42:29,495 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 152 transitions, 1306 flow [2024-06-14 12:42:29,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:29,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:29,495 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 12:42:29,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-14 12:42:29,495 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 12:42:29,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:29,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1259085342, now seen corresponding path program 12 times [2024-06-14 12:42:29,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:29,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196977541] [2024-06-14 12:42:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:29,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:30,387 INFO 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 12:42:30,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:30,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196977541] [2024-06-14 12:42:30,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196977541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:30,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:30,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:30,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824777616] [2024-06-14 12:42:30,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:30,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:30,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:30,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:30,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:30,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:30,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 152 transitions, 1306 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 12:42:30,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:30,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:30,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:30,783 INFO L124 PetriNetUnfolderBase]: 394/812 cut-off events. [2024-06-14 12:42:30,783 INFO L125 PetriNetUnfolderBase]: For 34339/34339 co-relation queries the response was YES. [2024-06-14 12:42:30,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4459 conditions, 812 events. 394/812 cut-off events. For 34339/34339 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4481 event pairs, 73 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4368. Up to 719 conditions per place. [2024-06-14 12:42:30,791 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 140 selfloop transitions, 23 changer transitions 0/167 dead transitions. [2024-06-14 12:42:30,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 167 transitions, 1670 flow [2024-06-14 12:42:30,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:30,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:30,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:42:30,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:42:30,793 INFO L175 Difference]: Start difference. First operand has 201 places, 152 transitions, 1306 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:42:30,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 167 transitions, 1670 flow [2024-06-14 12:42:30,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 167 transitions, 1568 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:30,867 INFO L231 Difference]: Finished difference. Result has 203 places, 152 transitions, 1254 flow [2024-06-14 12:42:30,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1254, PETRI_PLACES=203, PETRI_TRANSITIONS=152} [2024-06-14 12:42:30,867 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2024-06-14 12:42:30,868 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 152 transitions, 1254 flow [2024-06-14 12:42:30,868 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 12:42:30,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:30,868 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 12:42:30,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-14 12:42:30,868 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 12:42:30,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:30,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2006681122, now seen corresponding path program 3 times [2024-06-14 12:42:30,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:30,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763238895] [2024-06-14 12:42:30,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:30,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:31,723 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 12:42:31,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:31,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763238895] [2024-06-14 12:42:31,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763238895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:31,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:31,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:31,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138249041] [2024-06-14 12:42:31,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:31,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:31,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:31,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:31,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:31,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:31,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 152 transitions, 1254 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:31,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:31,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:31,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:32,095 INFO L124 PetriNetUnfolderBase]: 395/814 cut-off events. [2024-06-14 12:42:32,095 INFO L125 PetriNetUnfolderBase]: For 33093/33093 co-relation queries the response was YES. [2024-06-14 12:42:32,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4385 conditions, 814 events. 395/814 cut-off events. For 33093/33093 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4499 event pairs, 73 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 4293. Up to 718 conditions per place. [2024-06-14 12:42:32,100 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 140 selfloop transitions, 26 changer transitions 0/170 dead transitions. [2024-06-14 12:42:32,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 170 transitions, 1692 flow [2024-06-14 12:42:32,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:32,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:42:32,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 12:42:32,101 INFO L175 Difference]: Start difference. First operand has 203 places, 152 transitions, 1254 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:42:32,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 170 transitions, 1692 flow [2024-06-14 12:42:32,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 170 transitions, 1571 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:42:32,163 INFO L231 Difference]: Finished difference. Result has 202 places, 154 transitions, 1248 flow [2024-06-14 12:42:32,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1248, PETRI_PLACES=202, PETRI_TRANSITIONS=154} [2024-06-14 12:42:32,163 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 170 predicate places. [2024-06-14 12:42:32,163 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 154 transitions, 1248 flow [2024-06-14 12:42:32,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:32,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:32,164 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 12:42:32,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-14 12:42:32,164 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 12:42:32,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:32,165 INFO L85 PathProgramCache]: Analyzing trace with hash 922439002, now seen corresponding path program 1 times [2024-06-14 12:42:32,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:32,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300316870] [2024-06-14 12:42:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:32,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:33,187 INFO 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 12:42:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:33,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300316870] [2024-06-14 12:42:33,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300316870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:33,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:33,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:33,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577125059] [2024-06-14 12:42:33,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:33,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:33,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:33,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:33,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:33,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:33,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 154 transitions, 1248 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:33,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:33,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:33,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:33,641 INFO L124 PetriNetUnfolderBase]: 434/889 cut-off events. [2024-06-14 12:42:33,642 INFO L125 PetriNetUnfolderBase]: For 38578/38578 co-relation queries the response was YES. [2024-06-14 12:42:33,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 889 events. 434/889 cut-off events. For 38578/38578 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5041 event pairs, 71 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 4682. Up to 744 conditions per place. [2024-06-14 12:42:33,647 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 147 selfloop transitions, 33 changer transitions 2/186 dead transitions. [2024-06-14 12:42:33,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 186 transitions, 1923 flow [2024-06-14 12:42:33,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:33,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:33,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:42:33,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-14 12:42:33,648 INFO L175 Difference]: Start difference. First operand has 202 places, 154 transitions, 1248 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:42:33,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 186 transitions, 1923 flow [2024-06-14 12:42:33,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 186 transitions, 1814 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-14 12:42:33,741 INFO L231 Difference]: Finished difference. Result has 206 places, 167 transitions, 1378 flow [2024-06-14 12:42:33,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1378, PETRI_PLACES=206, PETRI_TRANSITIONS=167} [2024-06-14 12:42:33,742 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 174 predicate places. [2024-06-14 12:42:33,742 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 167 transitions, 1378 flow [2024-06-14 12:42:33,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:33,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:33,742 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 12:42:33,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-14 12:42:33,743 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 12:42:33,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:33,743 INFO L85 PathProgramCache]: Analyzing trace with hash -349384776, now seen corresponding path program 2 times [2024-06-14 12:42:33,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:33,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481378036] [2024-06-14 12:42:33,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:33,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:33,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:34,693 INFO 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 12:42:34,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:34,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481378036] [2024-06-14 12:42:34,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481378036] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:34,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:34,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:34,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29352280] [2024-06-14 12:42:34,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:34,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:34,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:34,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:34,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:34,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:34,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 167 transitions, 1378 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:34,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:34,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:34,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:35,222 INFO L124 PetriNetUnfolderBase]: 434/899 cut-off events. [2024-06-14 12:42:35,222 INFO L125 PetriNetUnfolderBase]: For 39455/39455 co-relation queries the response was YES. [2024-06-14 12:42:35,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4719 conditions, 899 events. 434/899 cut-off events. For 39455/39455 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5139 event pairs, 85 based on Foata normal form. 4/901 useless extension candidates. Maximal degree in co-relation 4625. Up to 758 conditions per place. [2024-06-14 12:42:35,228 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 145 selfloop transitions, 33 changer transitions 2/184 dead transitions. [2024-06-14 12:42:35,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 184 transitions, 1848 flow [2024-06-14 12:42:35,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:35,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:42:35,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:42:35,229 INFO L175 Difference]: Start difference. First operand has 206 places, 167 transitions, 1378 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:42:35,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 184 transitions, 1848 flow [2024-06-14 12:42:35,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 184 transitions, 1783 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-14 12:42:35,316 INFO L231 Difference]: Finished difference. Result has 213 places, 170 transitions, 1455 flow [2024-06-14 12:42:35,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1455, PETRI_PLACES=213, PETRI_TRANSITIONS=170} [2024-06-14 12:42:35,317 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 181 predicate places. [2024-06-14 12:42:35,317 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 170 transitions, 1455 flow [2024-06-14 12:42:35,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:35,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:35,317 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 12:42:35,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-14 12:42:35,318 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 12:42:35,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:35,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1932360156, now seen corresponding path program 3 times [2024-06-14 12:42:35,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:35,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218402346] [2024-06-14 12:42:35,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:35,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:36,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:36,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:36,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218402346] [2024-06-14 12:42:36,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218402346] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:36,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:36,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473965100] [2024-06-14 12:42:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:36,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:36,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:36,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 170 transitions, 1455 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:36,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:36,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:36,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:36,651 INFO L124 PetriNetUnfolderBase]: 436/909 cut-off events. [2024-06-14 12:42:36,651 INFO L125 PetriNetUnfolderBase]: For 36592/36592 co-relation queries the response was YES. [2024-06-14 12:42:36,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4826 conditions, 909 events. 436/909 cut-off events. For 36592/36592 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5247 event pairs, 85 based on Foata normal form. 2/909 useless extension candidates. Maximal degree in co-relation 4729. Up to 770 conditions per place. [2024-06-14 12:42:36,659 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 148 selfloop transitions, 33 changer transitions 0/185 dead transitions. [2024-06-14 12:42:36,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 185 transitions, 1878 flow [2024-06-14 12:42:36,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:36,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:42:36,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:42:36,660 INFO L175 Difference]: Start difference. First operand has 213 places, 170 transitions, 1455 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:42:36,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 185 transitions, 1878 flow [2024-06-14 12:42:36,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 185 transitions, 1797 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-14 12:42:36,763 INFO L231 Difference]: Finished difference. Result has 218 places, 173 transitions, 1480 flow [2024-06-14 12:42:36,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1376, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1480, PETRI_PLACES=218, PETRI_TRANSITIONS=173} [2024-06-14 12:42:36,764 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2024-06-14 12:42:36,764 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 173 transitions, 1480 flow [2024-06-14 12:42:36,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:36,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:36,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:36,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-14 12:42:36,764 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 12:42:36,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:36,765 INFO L85 PathProgramCache]: Analyzing trace with hash 118757514, now seen corresponding path program 4 times [2024-06-14 12:42:36,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:36,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357481556] [2024-06-14 12:42:36,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:36,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:37,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:42:37,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:37,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357481556] [2024-06-14 12:42:37,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357481556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:37,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:37,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:37,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295841279] [2024-06-14 12:42:37,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:37,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:37,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:37,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:37,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:37,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:37,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 173 transitions, 1480 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:37,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:37,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:37,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:38,062 INFO L124 PetriNetUnfolderBase]: 447/930 cut-off events. [2024-06-14 12:42:38,062 INFO L125 PetriNetUnfolderBase]: For 41305/41305 co-relation queries the response was YES. [2024-06-14 12:42:38,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 930 events. 447/930 cut-off events. For 41305/41305 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5382 event pairs, 80 based on Foata normal form. 2/930 useless extension candidates. Maximal degree in co-relation 4944. Up to 708 conditions per place. [2024-06-14 12:42:38,070 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 148 selfloop transitions, 38 changer transitions 0/190 dead transitions. [2024-06-14 12:42:38,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 190 transitions, 2042 flow [2024-06-14 12:42:38,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:38,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:38,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:42:38,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 12:42:38,071 INFO L175 Difference]: Start difference. First operand has 218 places, 173 transitions, 1480 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:42:38,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 190 transitions, 2042 flow [2024-06-14 12:42:38,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 190 transitions, 1962 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:38,185 INFO L231 Difference]: Finished difference. Result has 220 places, 175 transitions, 1510 flow [2024-06-14 12:42:38,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1400, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1510, PETRI_PLACES=220, PETRI_TRANSITIONS=175} [2024-06-14 12:42:38,186 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 188 predicate places. [2024-06-14 12:42:38,186 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 175 transitions, 1510 flow [2024-06-14 12:42:38,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:38,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:38,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:38,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-14 12:42:38,186 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 12:42:38,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:38,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2006907308, now seen corresponding path program 5 times [2024-06-14 12:42:38,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:38,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317152048] [2024-06-14 12:42:38,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:38,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:39,130 INFO 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 12:42:39,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:39,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317152048] [2024-06-14 12:42:39,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317152048] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:39,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:39,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:39,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306693931] [2024-06-14 12:42:39,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:39,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:39,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:39,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:39,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:39,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:39,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 175 transitions, 1510 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:39,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:39,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:39,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:39,566 INFO L124 PetriNetUnfolderBase]: 451/938 cut-off events. [2024-06-14 12:42:39,567 INFO L125 PetriNetUnfolderBase]: For 42444/42444 co-relation queries the response was YES. [2024-06-14 12:42:39,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 938 events. 451/938 cut-off events. For 42444/42444 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5456 event pairs, 88 based on Foata normal form. 2/938 useless extension candidates. Maximal degree in co-relation 5003. Up to 799 conditions per place. [2024-06-14 12:42:39,573 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 151 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2024-06-14 12:42:39,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 188 transitions, 1922 flow [2024-06-14 12:42:39,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:39,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-14 12:42:39,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:42:39,575 INFO L175 Difference]: Start difference. First operand has 220 places, 175 transitions, 1510 flow. Second operand 10 states and 130 transitions. [2024-06-14 12:42:39,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 188 transitions, 1922 flow [2024-06-14 12:42:39,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 188 transitions, 1863 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-14 12:42:39,689 INFO L231 Difference]: Finished difference. Result has 224 places, 176 transitions, 1540 flow [2024-06-14 12:42:39,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1540, PETRI_PLACES=224, PETRI_TRANSITIONS=176} [2024-06-14 12:42:39,689 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-14 12:42:39,689 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 176 transitions, 1540 flow [2024-06-14 12:42:39,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:39,689 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 12:42:39,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-14 12:42:39,690 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 12:42:39,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:39,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1533825788, now seen corresponding path program 6 times [2024-06-14 12:42:39,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:39,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080143433] [2024-06-14 12:42:39,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:39,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:40,501 INFO 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 12:42:40,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:40,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080143433] [2024-06-14 12:42:40,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080143433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:40,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:40,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:40,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529201917] [2024-06-14 12:42:40,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:40,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:40,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:40,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:40,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:40,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 176 transitions, 1540 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:40,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:40,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:40,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:40,956 INFO L124 PetriNetUnfolderBase]: 455/946 cut-off events. [2024-06-14 12:42:40,957 INFO L125 PetriNetUnfolderBase]: For 43458/43458 co-relation queries the response was YES. [2024-06-14 12:42:40,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5184 conditions, 946 events. 455/946 cut-off events. For 43458/43458 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5514 event pairs, 88 based on Foata normal form. 2/946 useless extension candidates. Maximal degree in co-relation 5084. Up to 783 conditions per place. [2024-06-14 12:42:40,964 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 151 selfloop transitions, 35 changer transitions 0/190 dead transitions. [2024-06-14 12:42:40,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 190 transitions, 1958 flow [2024-06-14 12:42:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:40,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:42:40,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:42:40,965 INFO L175 Difference]: Start difference. First operand has 224 places, 176 transitions, 1540 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:42:40,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 190 transitions, 1958 flow [2024-06-14 12:42:41,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 190 transitions, 1885 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-14 12:42:41,073 INFO L231 Difference]: Finished difference. Result has 227 places, 177 transitions, 1559 flow [2024-06-14 12:42:41,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1559, PETRI_PLACES=227, PETRI_TRANSITIONS=177} [2024-06-14 12:42:41,074 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 195 predicate places. [2024-06-14 12:42:41,074 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 177 transitions, 1559 flow [2024-06-14 12:42:41,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:41,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:41,074 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 12:42:41,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-14 12:42:41,074 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 12:42:41,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash 102098726, now seen corresponding path program 7 times [2024-06-14 12:42:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:41,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734264855] [2024-06-14 12:42:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:41,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:41,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:42,099 INFO 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 12:42:42,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:42,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734264855] [2024-06-14 12:42:42,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734264855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:42,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:42,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:42,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664649297] [2024-06-14 12:42:42,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:42,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:42,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:42,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:42,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:42,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:42,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 177 transitions, 1559 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:42,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:42,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:42,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:42,523 INFO L124 PetriNetUnfolderBase]: 459/954 cut-off events. [2024-06-14 12:42:42,523 INFO L125 PetriNetUnfolderBase]: For 44629/44629 co-relation queries the response was YES. [2024-06-14 12:42:42,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5246 conditions, 954 events. 459/954 cut-off events. For 44629/44629 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5569 event pairs, 83 based on Foata normal form. 2/954 useless extension candidates. Maximal degree in co-relation 5145. Up to 824 conditions per place. [2024-06-14 12:42:42,530 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 152 selfloop transitions, 36 changer transitions 0/192 dead transitions. [2024-06-14 12:42:42,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 192 transitions, 1985 flow [2024-06-14 12:42:42,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:42,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:42,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:42:42,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-14 12:42:42,531 INFO L175 Difference]: Start difference. First operand has 227 places, 177 transitions, 1559 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:42:42,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 192 transitions, 1985 flow [2024-06-14 12:42:42,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 192 transitions, 1905 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:42,658 INFO L231 Difference]: Finished difference. Result has 229 places, 178 transitions, 1575 flow [2024-06-14 12:42:42,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1479, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1575, PETRI_PLACES=229, PETRI_TRANSITIONS=178} [2024-06-14 12:42:42,658 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 197 predicate places. [2024-06-14 12:42:42,659 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 178 transitions, 1575 flow [2024-06-14 12:42:42,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:42,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:42,659 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 12:42:42,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-14 12:42:42,659 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 12:42:42,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:42,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1704973632, now seen corresponding path program 8 times [2024-06-14 12:42:42,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:42,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317495430] [2024-06-14 12:42:42,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:42,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:43,650 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 12:42:43,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:43,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317495430] [2024-06-14 12:42:43,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317495430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:43,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:43,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:42:43,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209134249] [2024-06-14 12:42:43,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:43,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:42:43,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:43,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:42:43,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:42:43,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:43,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 178 transitions, 1575 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:43,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:43,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:43,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:44,040 INFO L124 PetriNetUnfolderBase]: 467/968 cut-off events. [2024-06-14 12:42:44,040 INFO L125 PetriNetUnfolderBase]: For 45779/45779 co-relation queries the response was YES. [2024-06-14 12:42:44,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5347 conditions, 968 events. 467/968 cut-off events. For 45779/45779 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5688 event pairs, 81 based on Foata normal form. 2/964 useless extension candidates. Maximal degree in co-relation 5245. Up to 848 conditions per place. [2024-06-14 12:42:44,047 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 164 selfloop transitions, 25 changer transitions 0/193 dead transitions. [2024-06-14 12:42:44,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 193 transitions, 2022 flow [2024-06-14 12:42:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:42:44,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 12:42:44,048 INFO L175 Difference]: Start difference. First operand has 229 places, 178 transitions, 1575 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:42:44,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 193 transitions, 2022 flow [2024-06-14 12:42:44,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 193 transitions, 1925 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:44,178 INFO L231 Difference]: Finished difference. Result has 232 places, 180 transitions, 1577 flow [2024-06-14 12:42:44,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1577, PETRI_PLACES=232, PETRI_TRANSITIONS=180} [2024-06-14 12:42:44,179 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 200 predicate places. [2024-06-14 12:42:44,179 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 180 transitions, 1577 flow [2024-06-14 12:42:44,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:44,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:44,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:44,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-14 12:42:44,180 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 12:42:44,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:44,181 INFO L85 PathProgramCache]: Analyzing trace with hash 97337126, now seen corresponding path program 9 times [2024-06-14 12:42:44,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:44,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656163754] [2024-06-14 12:42:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:45,247 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 12:42:45,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:45,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656163754] [2024-06-14 12:42:45,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656163754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:45,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:45,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:45,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805586873] [2024-06-14 12:42:45,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:45,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:45,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:45,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:45,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:45,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 180 transitions, 1577 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:45,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:45,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:45,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:45,725 INFO L124 PetriNetUnfolderBase]: 478/991 cut-off events. [2024-06-14 12:42:45,725 INFO L125 PetriNetUnfolderBase]: For 51761/51761 co-relation queries the response was YES. [2024-06-14 12:42:45,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5582 conditions, 991 events. 478/991 cut-off events. For 51761/51761 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5845 event pairs, 84 based on Foata normal form. 2/991 useless extension candidates. Maximal degree in co-relation 5478. Up to 774 conditions per place. [2024-06-14 12:42:45,732 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 157 selfloop transitions, 38 changer transitions 0/199 dead transitions. [2024-06-14 12:42:45,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 199 transitions, 2185 flow [2024-06-14 12:42:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:42:45,734 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-14 12:42:45,734 INFO L175 Difference]: Start difference. First operand has 232 places, 180 transitions, 1577 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:42:45,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 199 transitions, 2185 flow [2024-06-14 12:42:45,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 199 transitions, 2125 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-14 12:42:45,878 INFO L231 Difference]: Finished difference. Result has 235 places, 182 transitions, 1639 flow [2024-06-14 12:42:45,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=235, PETRI_TRANSITIONS=182} [2024-06-14 12:42:45,879 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 203 predicate places. [2024-06-14 12:42:45,879 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 182 transitions, 1639 flow [2024-06-14 12:42:45,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:45,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:45,879 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 12:42:45,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-14 12:42:45,880 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 12:42:45,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:45,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1646765862, now seen corresponding path program 10 times [2024-06-14 12:42:45,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:45,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528811734] [2024-06-14 12:42:45,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:45,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:46,774 INFO 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 12:42:46,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:46,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528811734] [2024-06-14 12:42:46,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528811734] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:46,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:46,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:46,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763878045] [2024-06-14 12:42:46,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:46,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:46,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:46,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:46,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:46,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:46,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 182 transitions, 1639 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:46,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:46,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:46,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:47,182 INFO L124 PetriNetUnfolderBase]: 486/1007 cut-off events. [2024-06-14 12:42:47,183 INFO L125 PetriNetUnfolderBase]: For 53369/53369 co-relation queries the response was YES. [2024-06-14 12:42:47,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5706 conditions, 1007 events. 486/1007 cut-off events. For 53369/53369 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6002 event pairs, 98 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 5601. Up to 886 conditions per place. [2024-06-14 12:42:47,191 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 178 selfloop transitions, 18 changer transitions 0/200 dead transitions. [2024-06-14 12:42:47,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 200 transitions, 2096 flow [2024-06-14 12:42:47,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:47,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-14 12:42:47,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856749311294766 [2024-06-14 12:42:47,193 INFO L175 Difference]: Start difference. First operand has 235 places, 182 transitions, 1639 flow. Second operand 11 states and 140 transitions. [2024-06-14 12:42:47,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 200 transitions, 2096 flow [2024-06-14 12:42:47,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 200 transitions, 2030 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:42:47,368 INFO L231 Difference]: Finished difference. Result has 241 places, 184 transitions, 1644 flow [2024-06-14 12:42:47,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1644, PETRI_PLACES=241, PETRI_TRANSITIONS=184} [2024-06-14 12:42:47,369 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 209 predicate places. [2024-06-14 12:42:47,369 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 184 transitions, 1644 flow [2024-06-14 12:42:47,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:47,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:47,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:47,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-14 12:42:47,370 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 12:42:47,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:47,371 INFO L85 PathProgramCache]: Analyzing trace with hash -987065674, now seen corresponding path program 1 times [2024-06-14 12:42:47,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:47,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863410376] [2024-06-14 12:42:47,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:47,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:48,986 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 12:42:48,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:48,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863410376] [2024-06-14 12:42:48,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863410376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:48,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:48,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:48,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967574772] [2024-06-14 12:42:48,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:48,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:48,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:48,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:48,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:49,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:49,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 184 transitions, 1644 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:49,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:49,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:49,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:49,540 INFO L124 PetriNetUnfolderBase]: 489/1012 cut-off events. [2024-06-14 12:42:49,540 INFO L125 PetriNetUnfolderBase]: For 52306/52306 co-relation queries the response was YES. [2024-06-14 12:42:49,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5765 conditions, 1012 events. 489/1012 cut-off events. For 52306/52306 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5995 event pairs, 100 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 5657. Up to 864 conditions per place. [2024-06-14 12:42:49,552 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 159 selfloop transitions, 35 changer transitions 3/201 dead transitions. [2024-06-14 12:42:49,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 201 transitions, 2171 flow [2024-06-14 12:42:49,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:42:49,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:42:49,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:42:49,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:42:49,554 INFO L175 Difference]: Start difference. First operand has 241 places, 184 transitions, 1644 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:42:49,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 201 transitions, 2171 flow [2024-06-14 12:42:49,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 201 transitions, 2116 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:49,705 INFO L231 Difference]: Finished difference. Result has 246 places, 186 transitions, 1731 flow [2024-06-14 12:42:49,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1589, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1731, PETRI_PLACES=246, PETRI_TRANSITIONS=186} [2024-06-14 12:42:49,706 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 214 predicate places. [2024-06-14 12:42:49,706 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 186 transitions, 1731 flow [2024-06-14 12:42:49,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:49,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:49,706 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 12:42:49,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-14 12:42:49,707 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 12:42:49,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1796958902, now seen corresponding path program 2 times [2024-06-14 12:42:49,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:49,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408687407] [2024-06-14 12:42:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:49,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:49,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:51,190 INFO 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 12:42:51,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:51,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408687407] [2024-06-14 12:42:51,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408687407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:51,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:51,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:42:51,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143581433] [2024-06-14 12:42:51,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:51,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:42:51,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:51,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:42:51,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:42:51,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:51,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 186 transitions, 1731 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:51,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:51,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:51,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:51,655 INFO L124 PetriNetUnfolderBase]: 480/993 cut-off events. [2024-06-14 12:42:51,656 INFO L125 PetriNetUnfolderBase]: For 51448/51448 co-relation queries the response was YES. [2024-06-14 12:42:51,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5724 conditions, 993 events. 480/993 cut-off events. For 51448/51448 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5849 event pairs, 84 based on Foata normal form. 1/992 useless extension candidates. Maximal degree in co-relation 5614. Up to 852 conditions per place. [2024-06-14 12:42:51,665 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 155 selfloop transitions, 45 changer transitions 0/204 dead transitions. [2024-06-14 12:42:51,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 204 transitions, 2255 flow [2024-06-14 12:42:51,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:42:51,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:42:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:42:51,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:42:51,666 INFO L175 Difference]: Start difference. First operand has 246 places, 186 transitions, 1731 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:42:51,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 204 transitions, 2255 flow [2024-06-14 12:42:51,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 204 transitions, 2124 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-14 12:42:51,840 INFO L231 Difference]: Finished difference. Result has 248 places, 190 transitions, 1804 flow [2024-06-14 12:42:51,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1600, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1804, PETRI_PLACES=248, PETRI_TRANSITIONS=190} [2024-06-14 12:42:51,840 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 216 predicate places. [2024-06-14 12:42:51,841 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 190 transitions, 1804 flow [2024-06-14 12:42:51,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:51,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:51,841 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 12:42:51,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-14 12:42:51,841 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 12:42:51,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:51,842 INFO L85 PathProgramCache]: Analyzing trace with hash 776372808, now seen corresponding path program 11 times [2024-06-14 12:42:51,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:51,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160345983] [2024-06-14 12:42:51,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:51,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:51,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:52,901 INFO 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 12:42:52,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:52,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160345983] [2024-06-14 12:42:52,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160345983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:52,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:52,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:52,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261724657] [2024-06-14 12:42:52,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:52,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:52,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:52,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:52,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:52,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:52,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 190 transitions, 1804 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:52,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:52,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:52,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:53,385 INFO L124 PetriNetUnfolderBase]: 487/1000 cut-off events. [2024-06-14 12:42:53,386 INFO L125 PetriNetUnfolderBase]: For 57264/57264 co-relation queries the response was YES. [2024-06-14 12:42:53,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 1000 events. 487/1000 cut-off events. For 57264/57264 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5897 event pairs, 93 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 5706. Up to 810 conditions per place. [2024-06-14 12:42:53,394 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 155 selfloop transitions, 44 changer transitions 2/205 dead transitions. [2024-06-14 12:42:53,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 205 transitions, 2345 flow [2024-06-14 12:42:53,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:53,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:42:53,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:42:53,395 INFO L175 Difference]: Start difference. First operand has 248 places, 190 transitions, 1804 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:42:53,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 205 transitions, 2345 flow [2024-06-14 12:42:53,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 205 transitions, 2193 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:53,566 INFO L231 Difference]: Finished difference. Result has 251 places, 193 transitions, 1824 flow [2024-06-14 12:42:53,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1824, PETRI_PLACES=251, PETRI_TRANSITIONS=193} [2024-06-14 12:42:53,566 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-14 12:42:53,566 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 193 transitions, 1824 flow [2024-06-14 12:42:53,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:53,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:53,567 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 12:42:53,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-14 12:42:53,567 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 12:42:53,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:53,567 INFO L85 PathProgramCache]: Analyzing trace with hash -947037716, now seen corresponding path program 12 times [2024-06-14 12:42:53,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:53,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374600374] [2024-06-14 12:42:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:53,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:54,523 INFO 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 12:42:54,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:54,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374600374] [2024-06-14 12:42:54,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374600374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:54,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:54,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:54,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536977097] [2024-06-14 12:42:54,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:54,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:54,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:54,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:54,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:54,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:54,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 193 transitions, 1824 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:54,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:54,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:54,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:54,964 INFO L124 PetriNetUnfolderBase]: 492/1011 cut-off events. [2024-06-14 12:42:54,964 INFO L125 PetriNetUnfolderBase]: For 59294/59294 co-relation queries the response was YES. [2024-06-14 12:42:54,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5885 conditions, 1011 events. 492/1011 cut-off events. For 59294/59294 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5998 event pairs, 95 based on Foata normal form. 2/1007 useless extension candidates. Maximal degree in co-relation 5771. Up to 820 conditions per place. [2024-06-14 12:42:54,973 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 157 selfloop transitions, 44 changer transitions 2/207 dead transitions. [2024-06-14 12:42:54,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 207 transitions, 2339 flow [2024-06-14 12:42:54,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:42:54,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:42:54,974 INFO L175 Difference]: Start difference. First operand has 251 places, 193 transitions, 1824 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:42:54,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 207 transitions, 2339 flow [2024-06-14 12:42:55,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 207 transitions, 2191 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-14 12:42:55,185 INFO L231 Difference]: Finished difference. Result has 254 places, 195 transitions, 1807 flow [2024-06-14 12:42:55,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1680, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1807, PETRI_PLACES=254, PETRI_TRANSITIONS=195} [2024-06-14 12:42:55,185 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 222 predicate places. [2024-06-14 12:42:55,186 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 195 transitions, 1807 flow [2024-06-14 12:42:55,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:55,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:55,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:42:55,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-14 12:42:55,186 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 12:42:55,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:55,187 INFO L85 PathProgramCache]: Analyzing trace with hash 769939068, now seen corresponding path program 13 times [2024-06-14 12:42:55,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:55,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342144394] [2024-06-14 12:42:55,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:55,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:56,281 INFO 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 12:42:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:56,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342144394] [2024-06-14 12:42:56,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342144394] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:56,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:56,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:56,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372685339] [2024-06-14 12:42:56,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:56,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:56,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:56,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:56,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:56,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:56,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 195 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:56,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:56,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:56,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:56,713 INFO L124 PetriNetUnfolderBase]: 494/1019 cut-off events. [2024-06-14 12:42:56,713 INFO L125 PetriNetUnfolderBase]: For 60529/60529 co-relation queries the response was YES. [2024-06-14 12:42:56,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5889 conditions, 1019 events. 494/1019 cut-off events. For 60529/60529 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6099 event pairs, 93 based on Foata normal form. 2/1015 useless extension candidates. Maximal degree in co-relation 5774. Up to 806 conditions per place. [2024-06-14 12:42:56,721 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 157 selfloop transitions, 46 changer transitions 1/208 dead transitions. [2024-06-14 12:42:56,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 208 transitions, 2309 flow [2024-06-14 12:42:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:42:56,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-14 12:42:56,722 INFO L175 Difference]: Start difference. First operand has 254 places, 195 transitions, 1807 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:42:56,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 208 transitions, 2309 flow [2024-06-14 12:42:56,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 208 transitions, 2208 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-14 12:42:56,913 INFO L231 Difference]: Finished difference. Result has 258 places, 196 transitions, 1832 flow [2024-06-14 12:42:56,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1706, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1832, PETRI_PLACES=258, PETRI_TRANSITIONS=196} [2024-06-14 12:42:56,913 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 226 predicate places. [2024-06-14 12:42:56,913 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 196 transitions, 1832 flow [2024-06-14 12:42:56,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:56,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:56,913 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 12:42:56,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-14 12:42:56,914 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 12:42:56,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:56,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1486842568, now seen corresponding path program 14 times [2024-06-14 12:42:56,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:56,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412135194] [2024-06-14 12:42:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:56,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:57,839 INFO 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 12:42:57,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:57,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412135194] [2024-06-14 12:42:57,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412135194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:57,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:57,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:57,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690015840] [2024-06-14 12:42:57,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:57,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:57,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:57,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:57,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:57,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 196 transitions, 1832 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:57,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:57,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:57,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:42:58,370 INFO L124 PetriNetUnfolderBase]: 498/1027 cut-off events. [2024-06-14 12:42:58,370 INFO L125 PetriNetUnfolderBase]: For 62085/62085 co-relation queries the response was YES. [2024-06-14 12:42:58,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5959 conditions, 1027 events. 498/1027 cut-off events. For 62085/62085 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6146 event pairs, 87 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 5843. Up to 791 conditions per place. [2024-06-14 12:42:58,377 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 141 selfloop transitions, 62 changer transitions 4/211 dead transitions. [2024-06-14 12:42:58,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 211 transitions, 2369 flow [2024-06-14 12:42:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:42:58,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:42:58,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-14 12:42:58,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-14 12:42:58,378 INFO L175 Difference]: Start difference. First operand has 258 places, 196 transitions, 1832 flow. Second operand 10 states and 135 transitions. [2024-06-14 12:42:58,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 211 transitions, 2369 flow [2024-06-14 12:42:58,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 211 transitions, 2247 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-14 12:42:58,568 INFO L231 Difference]: Finished difference. Result has 260 places, 197 transitions, 1876 flow [2024-06-14 12:42:58,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1876, PETRI_PLACES=260, PETRI_TRANSITIONS=197} [2024-06-14 12:42:58,569 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-14 12:42:58,569 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 197 transitions, 1876 flow [2024-06-14 12:42:58,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:58,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:42:58,569 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 12:42:58,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-14 12:42:58,569 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 12:42:58,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:42:58,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1486664938, now seen corresponding path program 15 times [2024-06-14 12:42:58,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:42:58,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143167761] [2024-06-14 12:42:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:42:58,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:42:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:42:59,791 INFO 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 12:42:59,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:42:59,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143167761] [2024-06-14 12:42:59,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143167761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:42:59,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:42:59,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:42:59,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410171349] [2024-06-14 12:42:59,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:42:59,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:42:59,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:42:59,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:42:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:42:59,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:42:59,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 197 transitions, 1876 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:42:59,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:42:59,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:42:59,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:00,332 INFO L124 PetriNetUnfolderBase]: 460/941 cut-off events. [2024-06-14 12:43:00,333 INFO L125 PetriNetUnfolderBase]: For 59643/59643 co-relation queries the response was YES. [2024-06-14 12:43:00,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5420 conditions, 941 events. 460/941 cut-off events. For 59643/59643 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5521 event pairs, 75 based on Foata normal form. 2/933 useless extension candidates. Maximal degree in co-relation 5303. Up to 695 conditions per place. [2024-06-14 12:43:00,341 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 139 selfloop transitions, 66 changer transitions 0/209 dead transitions. [2024-06-14 12:43:00,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 209 transitions, 2342 flow [2024-06-14 12:43:00,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:43:00,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-14 12:43:00,342 INFO L175 Difference]: Start difference. First operand has 260 places, 197 transitions, 1876 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:43:00,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 209 transitions, 2342 flow [2024-06-14 12:43:00,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 209 transitions, 2132 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:00,502 INFO L231 Difference]: Finished difference. Result has 262 places, 198 transitions, 1836 flow [2024-06-14 12:43:00,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1666, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1836, PETRI_PLACES=262, PETRI_TRANSITIONS=198} [2024-06-14 12:43:00,502 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 230 predicate places. [2024-06-14 12:43:00,502 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 198 transitions, 1836 flow [2024-06-14 12:43:00,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:00,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:00,503 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 12:43:00,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-14 12:43:00,503 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 12:43:00,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:00,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1118033096, now seen corresponding path program 16 times [2024-06-14 12:43:00,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:00,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176866779] [2024-06-14 12:43:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:00,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:01,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:01,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176866779] [2024-06-14 12:43:01,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176866779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:01,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:01,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:01,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137743831] [2024-06-14 12:43:01,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:01,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:01,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:01,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:01,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:01,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:01,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 198 transitions, 1836 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:01,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:01,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:01,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:01,990 INFO L124 PetriNetUnfolderBase]: 471/964 cut-off events. [2024-06-14 12:43:01,990 INFO L125 PetriNetUnfolderBase]: For 66914/66914 co-relation queries the response was YES. [2024-06-14 12:43:01,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5619 conditions, 964 events. 471/964 cut-off events. For 66914/66914 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5680 event pairs, 84 based on Foata normal form. 2/960 useless extension candidates. Maximal degree in co-relation 5505. Up to 690 conditions per place. [2024-06-14 12:43:01,998 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 157 selfloop transitions, 52 changer transitions 0/213 dead transitions. [2024-06-14 12:43:01,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 213 transitions, 2506 flow [2024-06-14 12:43:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:43:02,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-14 12:43:02,000 INFO L175 Difference]: Start difference. First operand has 262 places, 198 transitions, 1836 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:43:02,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 213 transitions, 2506 flow [2024-06-14 12:43:02,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 213 transitions, 2346 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:02,166 INFO L231 Difference]: Finished difference. Result has 263 places, 200 transitions, 1854 flow [2024-06-14 12:43:02,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1676, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1854, PETRI_PLACES=263, PETRI_TRANSITIONS=200} [2024-06-14 12:43:02,166 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 231 predicate places. [2024-06-14 12:43:02,166 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 200 transitions, 1854 flow [2024-06-14 12:43:02,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:02,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:02,166 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 12:43:02,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-14 12:43:02,167 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 12:43:02,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:02,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1850650552, now seen corresponding path program 17 times [2024-06-14 12:43:02,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:02,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858801496] [2024-06-14 12:43:02,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:02,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:03,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:03,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858801496] [2024-06-14 12:43:03,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858801496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:03,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:03,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:03,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538868195] [2024-06-14 12:43:03,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:03,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:03,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:03,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:03,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:03,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:03,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 200 transitions, 1854 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:03,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:03,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:03,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:03,491 INFO L124 PetriNetUnfolderBase]: 476/975 cut-off events. [2024-06-14 12:43:03,492 INFO L125 PetriNetUnfolderBase]: For 68689/68689 co-relation queries the response was YES. [2024-06-14 12:43:03,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5679 conditions, 975 events. 476/975 cut-off events. For 68689/68689 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5781 event pairs, 90 based on Foata normal form. 2/971 useless extension candidates. Maximal degree in co-relation 5564. Up to 783 conditions per place. [2024-06-14 12:43:03,501 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 161 selfloop transitions, 48 changer transitions 0/213 dead transitions. [2024-06-14 12:43:03,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 213 transitions, 2351 flow [2024-06-14 12:43:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-14 12:43:03,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403030303030303 [2024-06-14 12:43:03,502 INFO L175 Difference]: Start difference. First operand has 263 places, 200 transitions, 1854 flow. Second operand 10 states and 133 transitions. [2024-06-14 12:43:03,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 213 transitions, 2351 flow [2024-06-14 12:43:03,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 213 transitions, 2243 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:03,718 INFO L231 Difference]: Finished difference. Result has 268 places, 203 transitions, 1912 flow [2024-06-14 12:43:03,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1912, PETRI_PLACES=268, PETRI_TRANSITIONS=203} [2024-06-14 12:43:03,718 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 236 predicate places. [2024-06-14 12:43:03,718 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 203 transitions, 1912 flow [2024-06-14 12:43:03,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:03,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:03,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:03,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-14 12:43:03,719 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 12:43:03,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:03,719 INFO L85 PathProgramCache]: Analyzing trace with hash 707098024, now seen corresponding path program 18 times [2024-06-14 12:43:03,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:03,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281824507] [2024-06-14 12:43:03,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:03,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:04,602 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 12:43:04,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:04,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281824507] [2024-06-14 12:43:04,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281824507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:04,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:04,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:04,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789958607] [2024-06-14 12:43:04,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:04,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:04,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:04,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:04,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:04,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:04,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 203 transitions, 1912 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:04,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:04,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:04,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:05,006 INFO L124 PetriNetUnfolderBase]: 480/983 cut-off events. [2024-06-14 12:43:05,007 INFO L125 PetriNetUnfolderBase]: For 69736/69736 co-relation queries the response was YES. [2024-06-14 12:43:05,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5757 conditions, 983 events. 480/983 cut-off events. For 69736/69736 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5837 event pairs, 92 based on Foata normal form. 2/979 useless extension candidates. Maximal degree in co-relation 5639. Up to 791 conditions per place. [2024-06-14 12:43:05,016 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 161 selfloop transitions, 49 changer transitions 0/214 dead transitions. [2024-06-14 12:43:05,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 214 transitions, 2384 flow [2024-06-14 12:43:05,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:05,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:05,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-14 12:43:05,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396969696969697 [2024-06-14 12:43:05,017 INFO L175 Difference]: Start difference. First operand has 268 places, 203 transitions, 1912 flow. Second operand 10 states and 131 transitions. [2024-06-14 12:43:05,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 214 transitions, 2384 flow [2024-06-14 12:43:05,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 214 transitions, 2262 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:05,198 INFO L231 Difference]: Finished difference. Result has 271 places, 204 transitions, 1924 flow [2024-06-14 12:43:05,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=271, PETRI_TRANSITIONS=204} [2024-06-14 12:43:05,198 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 239 predicate places. [2024-06-14 12:43:05,198 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 204 transitions, 1924 flow [2024-06-14 12:43:05,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:05,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:05,198 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 12:43:05,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-14 12:43:05,199 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 12:43:05,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1180691716, now seen corresponding path program 19 times [2024-06-14 12:43:05,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:05,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899928165] [2024-06-14 12:43:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:05,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:05,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:06,059 INFO 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 12:43:06,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:06,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899928165] [2024-06-14 12:43:06,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899928165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:06,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:06,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:06,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751943799] [2024-06-14 12:43:06,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:06,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:06,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:06,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:06,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:06,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:06,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 204 transitions, 1924 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:06,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:06,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:06,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:06,530 INFO L124 PetriNetUnfolderBase]: 484/991 cut-off events. [2024-06-14 12:43:06,530 INFO L125 PetriNetUnfolderBase]: For 71589/71589 co-relation queries the response was YES. [2024-06-14 12:43:06,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 991 events. 484/991 cut-off events. For 71589/71589 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5885 event pairs, 90 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 5696. Up to 770 conditions per place. [2024-06-14 12:43:06,540 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 161 selfloop transitions, 52 changer transitions 0/217 dead transitions. [2024-06-14 12:43:06,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 217 transitions, 2570 flow [2024-06-14 12:43:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:06,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-14 12:43:06,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40606060606060607 [2024-06-14 12:43:06,543 INFO L175 Difference]: Start difference. First operand has 271 places, 204 transitions, 1924 flow. Second operand 10 states and 134 transitions. [2024-06-14 12:43:06,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 217 transitions, 2570 flow [2024-06-14 12:43:06,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 217 transitions, 2432 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:06,730 INFO L231 Difference]: Finished difference. Result has 273 places, 205 transitions, 1926 flow [2024-06-14 12:43:06,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1786, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1926, PETRI_PLACES=273, PETRI_TRANSITIONS=205} [2024-06-14 12:43:06,730 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 241 predicate places. [2024-06-14 12:43:06,730 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 205 transitions, 1926 flow [2024-06-14 12:43:06,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:06,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:06,731 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 12:43:06,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-14 12:43:06,731 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 12:43:06,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:06,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1849544810, now seen corresponding path program 20 times [2024-06-14 12:43:06,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:06,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889562831] [2024-06-14 12:43:06,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:06,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:06,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:07,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:07,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889562831] [2024-06-14 12:43:07,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889562831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:07,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:07,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:07,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269922159] [2024-06-14 12:43:07,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:07,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:07,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:07,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:07,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:07,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:07,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 205 transitions, 1926 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:07,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:07,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:07,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:07,988 INFO L124 PetriNetUnfolderBase]: 481/984 cut-off events. [2024-06-14 12:43:07,988 INFO L125 PetriNetUnfolderBase]: For 66233/66233 co-relation queries the response was YES. [2024-06-14 12:43:07,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 984 events. 481/984 cut-off events. For 66233/66233 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5861 event pairs, 81 based on Foata normal form. 2/976 useless extension candidates. Maximal degree in co-relation 5457. Up to 751 conditions per place. [2024-06-14 12:43:07,997 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 135 selfloop transitions, 76 changer transitions 0/215 dead transitions. [2024-06-14 12:43:07,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 215 transitions, 2370 flow [2024-06-14 12:43:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:07,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-14 12:43:07,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-14 12:43:07,999 INFO L175 Difference]: Start difference. First operand has 273 places, 205 transitions, 1926 flow. Second operand 10 states and 132 transitions. [2024-06-14 12:43:07,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 215 transitions, 2370 flow [2024-06-14 12:43:08,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 215 transitions, 2204 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:08,158 INFO L231 Difference]: Finished difference. Result has 275 places, 205 transitions, 1916 flow [2024-06-14 12:43:08,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1916, PETRI_PLACES=275, PETRI_TRANSITIONS=205} [2024-06-14 12:43:08,158 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 243 predicate places. [2024-06-14 12:43:08,158 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 205 transitions, 1916 flow [2024-06-14 12:43:08,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:08,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:08,158 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 12:43:08,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-14 12:43:08,159 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 12:43:08,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:08,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1603908938, now seen corresponding path program 3 times [2024-06-14 12:43:08,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:08,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123646290] [2024-06-14 12:43:08,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:08,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:09,390 INFO 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 12:43:09,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:09,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123646290] [2024-06-14 12:43:09,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123646290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:09,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:09,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:09,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925344592] [2024-06-14 12:43:09,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:09,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:09,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:09,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:09,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:09,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:09,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 205 transitions, 1916 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:09,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:09,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:09,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:09,899 INFO L124 PetriNetUnfolderBase]: 484/993 cut-off events. [2024-06-14 12:43:09,899 INFO L125 PetriNetUnfolderBase]: For 63931/63931 co-relation queries the response was YES. [2024-06-14 12:43:09,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5608 conditions, 993 events. 484/993 cut-off events. For 63931/63931 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5934 event pairs, 91 based on Foata normal form. 1/988 useless extension candidates. Maximal degree in co-relation 5489. Up to 748 conditions per place. [2024-06-14 12:43:09,911 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 160 selfloop transitions, 55 changer transitions 0/219 dead transitions. [2024-06-14 12:43:09,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 219 transitions, 2666 flow [2024-06-14 12:43:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:09,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 141 transitions. [2024-06-14 12:43:09,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42727272727272725 [2024-06-14 12:43:09,912 INFO L175 Difference]: Start difference. First operand has 275 places, 205 transitions, 1916 flow. Second operand 10 states and 141 transitions. [2024-06-14 12:43:09,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 219 transitions, 2666 flow [2024-06-14 12:43:10,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 219 transitions, 2483 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:43:10,076 INFO L231 Difference]: Finished difference. Result has 274 places, 209 transitions, 1984 flow [2024-06-14 12:43:10,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1984, PETRI_PLACES=274, PETRI_TRANSITIONS=209} [2024-06-14 12:43:10,076 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2024-06-14 12:43:10,077 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 209 transitions, 1984 flow [2024-06-14 12:43:10,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:10,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:10,077 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 12:43:10,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-14 12:43:10,077 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 12:43:10,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:10,077 INFO L85 PathProgramCache]: Analyzing trace with hash -944035112, now seen corresponding path program 4 times [2024-06-14 12:43:10,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:10,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789131136] [2024-06-14 12:43:10,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:10,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:11,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:11,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789131136] [2024-06-14 12:43:11,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789131136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:11,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:11,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:11,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240424689] [2024-06-14 12:43:11,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:11,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:11,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:11,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:11,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:11,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:11,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 209 transitions, 1984 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:11,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:11,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:11,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:11,981 INFO L124 PetriNetUnfolderBase]: 487/1000 cut-off events. [2024-06-14 12:43:11,981 INFO L125 PetriNetUnfolderBase]: For 66212/66212 co-relation queries the response was YES. [2024-06-14 12:43:11,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5629 conditions, 1000 events. 487/1000 cut-off events. For 66212/66212 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5972 event pairs, 91 based on Foata normal form. 1/995 useless extension candidates. Maximal degree in co-relation 5511. Up to 752 conditions per place. [2024-06-14 12:43:11,989 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 158 selfloop transitions, 59 changer transitions 0/221 dead transitions. [2024-06-14 12:43:11,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 221 transitions, 2678 flow [2024-06-14 12:43:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:11,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-14 12:43:11,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2024-06-14 12:43:11,991 INFO L175 Difference]: Start difference. First operand has 274 places, 209 transitions, 1984 flow. Second operand 10 states and 140 transitions. [2024-06-14 12:43:11,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 221 transitions, 2678 flow [2024-06-14 12:43:12,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 221 transitions, 2566 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-14 12:43:12,145 INFO L231 Difference]: Finished difference. Result has 278 places, 211 transitions, 2065 flow [2024-06-14 12:43:12,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1872, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2065, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2024-06-14 12:43:12,146 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 246 predicate places. [2024-06-14 12:43:12,146 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 2065 flow [2024-06-14 12:43:12,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:12,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:12,146 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 12:43:12,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-14 12:43:12,146 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 12:43:12,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:12,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1840966986, now seen corresponding path program 5 times [2024-06-14 12:43:12,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:12,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554223295] [2024-06-14 12:43:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:12,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:13,361 INFO 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 12:43:13,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:13,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554223295] [2024-06-14 12:43:13,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554223295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:13,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:13,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:13,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766879768] [2024-06-14 12:43:13,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:13,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:13,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:13,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:13,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:13,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:13,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 2065 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:13,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:13,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:13,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:13,867 INFO L124 PetriNetUnfolderBase]: 490/1007 cut-off events. [2024-06-14 12:43:13,868 INFO L125 PetriNetUnfolderBase]: For 67972/67972 co-relation queries the response was YES. [2024-06-14 12:43:13,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5774 conditions, 1007 events. 490/1007 cut-off events. For 67972/67972 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6045 event pairs, 91 based on Foata normal form. 1/1002 useless extension candidates. Maximal degree in co-relation 5654. Up to 756 conditions per place. [2024-06-14 12:43:13,880 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 152 selfloop transitions, 67 changer transitions 0/223 dead transitions. [2024-06-14 12:43:13,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 223 transitions, 2769 flow [2024-06-14 12:43:13,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:13,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:13,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-14 12:43:13,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212121212121212 [2024-06-14 12:43:13,882 INFO L175 Difference]: Start difference. First operand has 278 places, 211 transitions, 2065 flow. Second operand 10 states and 139 transitions. [2024-06-14 12:43:13,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 223 transitions, 2769 flow [2024-06-14 12:43:14,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 223 transitions, 2581 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:14,052 INFO L231 Difference]: Finished difference. Result has 280 places, 213 transitions, 2090 flow [2024-06-14 12:43:14,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2090, PETRI_PLACES=280, PETRI_TRANSITIONS=213} [2024-06-14 12:43:14,052 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-14 12:43:14,053 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 213 transitions, 2090 flow [2024-06-14 12:43:14,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:14,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:14,053 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 12:43:14,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-14 12:43:14,053 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 12:43:14,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash -363926858, now seen corresponding path program 6 times [2024-06-14 12:43:14,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:14,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931810791] [2024-06-14 12:43:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:14,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:15,180 INFO 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 12:43:15,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:15,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931810791] [2024-06-14 12:43:15,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931810791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:15,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:15,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:15,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108089196] [2024-06-14 12:43:15,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:15,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:15,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:15,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:15,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:15,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 213 transitions, 2090 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:15,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:15,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:15,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:15,676 INFO L124 PetriNetUnfolderBase]: 493/1015 cut-off events. [2024-06-14 12:43:15,677 INFO L125 PetriNetUnfolderBase]: For 69499/69499 co-relation queries the response was YES. [2024-06-14 12:43:15,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5835 conditions, 1015 events. 493/1015 cut-off events. For 69499/69499 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6105 event pairs, 127 based on Foata normal form. 1/1014 useless extension candidates. Maximal degree in co-relation 5714. Up to 911 conditions per place. [2024-06-14 12:43:15,686 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 200 selfloop transitions, 23 changer transitions 0/227 dead transitions. [2024-06-14 12:43:15,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 227 transitions, 2808 flow [2024-06-14 12:43:15,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:43:15,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:43:15,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-14 12:43:15,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37626262626262624 [2024-06-14 12:43:15,687 INFO L175 Difference]: Start difference. First operand has 280 places, 213 transitions, 2090 flow. Second operand 12 states and 149 transitions. [2024-06-14 12:43:15,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 227 transitions, 2808 flow [2024-06-14 12:43:15,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 227 transitions, 2605 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:15,881 INFO L231 Difference]: Finished difference. Result has 284 places, 215 transitions, 2012 flow [2024-06-14 12:43:15,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2012, PETRI_PLACES=284, PETRI_TRANSITIONS=215} [2024-06-14 12:43:15,881 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 252 predicate places. [2024-06-14 12:43:15,881 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 215 transitions, 2012 flow [2024-06-14 12:43:15,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:15,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:15,882 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 12:43:15,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-14 12:43:15,882 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 12:43:15,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash -706225448, now seen corresponding path program 7 times [2024-06-14 12:43:15,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:15,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143004565] [2024-06-14 12:43:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:15,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:17,037 INFO 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 12:43:17,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:17,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143004565] [2024-06-14 12:43:17,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143004565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:17,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:17,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:17,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592187757] [2024-06-14 12:43:17,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:17,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:17,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:17,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:17,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:17,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:17,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 215 transitions, 2012 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:17,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:17,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:17,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:17,607 INFO L124 PetriNetUnfolderBase]: 491/1012 cut-off events. [2024-06-14 12:43:17,607 INFO L125 PetriNetUnfolderBase]: For 66371/66371 co-relation queries the response was YES. [2024-06-14 12:43:17,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5566 conditions, 1012 events. 491/1012 cut-off events. For 66371/66371 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6094 event pairs, 127 based on Foata normal form. 1/1011 useless extension candidates. Maximal degree in co-relation 5444. Up to 918 conditions per place. [2024-06-14 12:43:17,617 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 203 selfloop transitions, 18 changer transitions 0/225 dead transitions. [2024-06-14 12:43:17,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 225 transitions, 2476 flow [2024-06-14 12:43:17,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:17,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-14 12:43:17,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371900826446281 [2024-06-14 12:43:17,618 INFO L175 Difference]: Start difference. First operand has 284 places, 215 transitions, 2012 flow. Second operand 11 states and 135 transitions. [2024-06-14 12:43:17,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 225 transitions, 2476 flow [2024-06-14 12:43:17,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 225 transitions, 2320 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:17,803 INFO L231 Difference]: Finished difference. Result has 286 places, 215 transitions, 1897 flow [2024-06-14 12:43:17,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1897, PETRI_PLACES=286, PETRI_TRANSITIONS=215} [2024-06-14 12:43:17,804 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-14 12:43:17,804 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 215 transitions, 1897 flow [2024-06-14 12:43:17,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:17,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:17,804 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 12:43:17,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-14 12:43:17,804 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 12:43:17,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:17,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1567712140, now seen corresponding path program 21 times [2024-06-14 12:43:17,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:17,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218536503] [2024-06-14 12:43:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:17,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:18,796 INFO 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 12:43:18,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:18,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218536503] [2024-06-14 12:43:18,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218536503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:18,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:18,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:18,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544027819] [2024-06-14 12:43:18,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:18,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:18,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:18,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:18,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:18,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:18,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 215 transitions, 1897 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:18,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:18,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:18,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:19,234 INFO L124 PetriNetUnfolderBase]: 499/1029 cut-off events. [2024-06-14 12:43:19,235 INFO L125 PetriNetUnfolderBase]: For 70360/70360 co-relation queries the response was YES. [2024-06-14 12:43:19,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5536 conditions, 1029 events. 499/1029 cut-off events. For 70360/70360 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6200 event pairs, 73 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 5413. Up to 899 conditions per place. [2024-06-14 12:43:19,246 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 205 selfloop transitions, 24 changer transitions 0/233 dead transitions. [2024-06-14 12:43:19,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 233 transitions, 2419 flow [2024-06-14 12:43:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:19,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-14 12:43:19,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41515151515151516 [2024-06-14 12:43:19,247 INFO L175 Difference]: Start difference. First operand has 286 places, 215 transitions, 1897 flow. Second operand 10 states and 137 transitions. [2024-06-14 12:43:19,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 233 transitions, 2419 flow [2024-06-14 12:43:19,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 233 transitions, 2364 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:43:19,427 INFO L231 Difference]: Finished difference. Result has 286 places, 217 transitions, 1926 flow [2024-06-14 12:43:19,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1842, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1926, PETRI_PLACES=286, PETRI_TRANSITIONS=217} [2024-06-14 12:43:19,427 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 254 predicate places. [2024-06-14 12:43:19,427 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 217 transitions, 1926 flow [2024-06-14 12:43:19,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:19,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:19,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:19,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-14 12:43:19,428 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 12:43:19,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash 390837560, now seen corresponding path program 22 times [2024-06-14 12:43:19,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:19,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251209257] [2024-06-14 12:43:19,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:19,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:20,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:20,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251209257] [2024-06-14 12:43:20,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251209257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:20,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:20,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-14 12:43:20,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211858628] [2024-06-14 12:43:20,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:20,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-14 12:43:20,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:20,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-14 12:43:20,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-14 12:43:20,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:20,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 217 transitions, 1926 flow. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:20,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:20,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:20,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:20,813 INFO L124 PetriNetUnfolderBase]: 507/1045 cut-off events. [2024-06-14 12:43:20,813 INFO L125 PetriNetUnfolderBase]: For 72589/72589 co-relation queries the response was YES. [2024-06-14 12:43:20,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5693 conditions, 1045 events. 507/1045 cut-off events. For 72589/72589 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6319 event pairs, 73 based on Foata normal form. 2/1045 useless extension candidates. Maximal degree in co-relation 5569. Up to 910 conditions per place. [2024-06-14 12:43:20,823 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 214 selfloop transitions, 20 changer transitions 0/238 dead transitions. [2024-06-14 12:43:20,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 238 transitions, 2483 flow [2024-06-14 12:43:20,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-14 12:43:20,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-14 12:43:20,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-14 12:43:20,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121212121212121 [2024-06-14 12:43:20,824 INFO L175 Difference]: Start difference. First operand has 286 places, 217 transitions, 1926 flow. Second operand 10 states and 136 transitions. [2024-06-14 12:43:20,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 238 transitions, 2483 flow [2024-06-14 12:43:21,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 238 transitions, 2427 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:21,011 INFO L231 Difference]: Finished difference. Result has 290 places, 219 transitions, 1961 flow [2024-06-14 12:43:21,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1961, PETRI_PLACES=290, PETRI_TRANSITIONS=219} [2024-06-14 12:43:21,011 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 258 predicate places. [2024-06-14 12:43:21,011 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 219 transitions, 1961 flow [2024-06-14 12:43:21,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 10 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:21,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:21,012 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 12:43:21,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-14 12:43:21,012 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 12:43:21,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:21,012 INFO L85 PathProgramCache]: Analyzing trace with hash -145949298, now seen corresponding path program 23 times [2024-06-14 12:43:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:21,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731289371] [2024-06-14 12:43:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:21,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:21,915 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 12:43:21,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:21,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731289371] [2024-06-14 12:43:21,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731289371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:21,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:21,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:21,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929427975] [2024-06-14 12:43:21,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:21,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:21,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:21,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:21,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:22,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:22,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 219 transitions, 1961 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:22,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:22,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:22,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:22,388 INFO L124 PetriNetUnfolderBase]: 504/1040 cut-off events. [2024-06-14 12:43:22,389 INFO L125 PetriNetUnfolderBase]: For 66141/66141 co-relation queries the response was YES. [2024-06-14 12:43:22,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5497 conditions, 1040 events. 504/1040 cut-off events. For 66141/66141 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6289 event pairs, 99 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 5371. Up to 908 conditions per place. [2024-06-14 12:43:22,398 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 209 selfloop transitions, 25 changer transitions 0/238 dead transitions. [2024-06-14 12:43:22,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 238 transitions, 2493 flow [2024-06-14 12:43:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:22,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:43:22,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 12:43:22,399 INFO L175 Difference]: Start difference. First operand has 290 places, 219 transitions, 1961 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:43:22,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 238 transitions, 2493 flow [2024-06-14 12:43:22,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 238 transitions, 2417 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:22,560 INFO L231 Difference]: Finished difference. Result has 294 places, 219 transitions, 1939 flow [2024-06-14 12:43:22,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=283, 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=1939, PETRI_PLACES=294, PETRI_TRANSITIONS=219} [2024-06-14 12:43:22,560 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-14 12:43:22,560 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 219 transitions, 1939 flow [2024-06-14 12:43:22,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:22,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:22,561 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 12:43:22,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-14 12:43:22,561 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 12:43:22,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:22,561 INFO L85 PathProgramCache]: Analyzing trace with hash -43940948, now seen corresponding path program 24 times [2024-06-14 12:43:22,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:22,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958841256] [2024-06-14 12:43:22,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:22,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:23,431 INFO 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 12:43:23,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:23,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958841256] [2024-06-14 12:43:23,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958841256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:23,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:23,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:23,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359669554] [2024-06-14 12:43:23,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:23,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:23,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:23,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 219 transitions, 1939 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:23,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:23,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:23,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:23,954 INFO L124 PetriNetUnfolderBase]: 512/1056 cut-off events. [2024-06-14 12:43:23,954 INFO L125 PetriNetUnfolderBase]: For 67602/67602 co-relation queries the response was YES. [2024-06-14 12:43:23,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5566 conditions, 1056 events. 512/1056 cut-off events. For 67602/67602 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6423 event pairs, 92 based on Foata normal form. 2/1056 useless extension candidates. Maximal degree in co-relation 5438. Up to 921 conditions per place. [2024-06-14 12:43:23,964 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 215 selfloop transitions, 22 changer transitions 0/241 dead transitions. [2024-06-14 12:43:23,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 241 transitions, 2508 flow [2024-06-14 12:43:23,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:23,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:43:23,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 12:43:23,966 INFO L175 Difference]: Start difference. First operand has 294 places, 219 transitions, 1939 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:43:23,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 241 transitions, 2508 flow [2024-06-14 12:43:24,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 241 transitions, 2395 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-14 12:43:24,136 INFO L231 Difference]: Finished difference. Result has 296 places, 221 transitions, 1925 flow [2024-06-14 12:43:24,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1925, PETRI_PLACES=296, PETRI_TRANSITIONS=221} [2024-06-14 12:43:24,137 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 264 predicate places. [2024-06-14 12:43:24,137 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 221 transitions, 1925 flow [2024-06-14 12:43:24,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:24,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:24,137 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 12:43:24,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-14 12:43:24,137 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 12:43:24,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:24,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1215339742, now seen corresponding path program 25 times [2024-06-14 12:43:24,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:24,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921521714] [2024-06-14 12:43:24,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:24,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:25,131 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 12:43:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:25,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921521714] [2024-06-14 12:43:25,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921521714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:25,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:25,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:25,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281282890] [2024-06-14 12:43:25,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:25,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:25,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:25,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:25,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:25,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:25,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 221 transitions, 1925 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:25,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:25,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:25,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:25,577 INFO L124 PetriNetUnfolderBase]: 509/1051 cut-off events. [2024-06-14 12:43:25,577 INFO L125 PetriNetUnfolderBase]: For 60590/60590 co-relation queries the response was YES. [2024-06-14 12:43:25,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 1051 events. 509/1051 cut-off events. For 60590/60590 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6417 event pairs, 92 based on Foata normal form. 2/1051 useless extension candidates. Maximal degree in co-relation 5164. Up to 921 conditions per place. [2024-06-14 12:43:25,586 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 208 selfloop transitions, 26 changer transitions 0/238 dead transitions. [2024-06-14 12:43:25,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 238 transitions, 2435 flow [2024-06-14 12:43:25,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:25,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:25,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:43:25,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 12:43:25,587 INFO L175 Difference]: Start difference. First operand has 296 places, 221 transitions, 1925 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:43:25,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 238 transitions, 2435 flow [2024-06-14 12:43:25,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 238 transitions, 2347 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:25,740 INFO L231 Difference]: Finished difference. Result has 299 places, 221 transitions, 1893 flow [2024-06-14 12:43:25,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1893, PETRI_PLACES=299, PETRI_TRANSITIONS=221} [2024-06-14 12:43:25,741 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-14 12:43:25,741 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 221 transitions, 1893 flow [2024-06-14 12:43:25,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:25,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:25,741 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 12:43:25,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-14 12:43:25,741 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 12:43:25,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1367476912, now seen corresponding path program 26 times [2024-06-14 12:43:25,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:25,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717806685] [2024-06-14 12:43:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:26,571 INFO 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 12:43:26,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:26,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717806685] [2024-06-14 12:43:26,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717806685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:26,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:26,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:26,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476179954] [2024-06-14 12:43:26,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:26,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:26,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:26,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:26,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:26,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:26,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 221 transitions, 1893 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:26,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:26,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:26,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:27,020 INFO L124 PetriNetUnfolderBase]: 506/1046 cut-off events. [2024-06-14 12:43:27,020 INFO L125 PetriNetUnfolderBase]: For 52559/52559 co-relation queries the response was YES. [2024-06-14 12:43:27,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4991 conditions, 1046 events. 506/1046 cut-off events. For 52559/52559 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6401 event pairs, 67 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 4864. Up to 876 conditions per place. [2024-06-14 12:43:27,027 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 212 selfloop transitions, 25 changer transitions 0/241 dead transitions. [2024-06-14 12:43:27,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 241 transitions, 2415 flow [2024-06-14 12:43:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:43:27,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:43:27,028 INFO L175 Difference]: Start difference. First operand has 299 places, 221 transitions, 1893 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:43:27,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 241 transitions, 2415 flow [2024-06-14 12:43:27,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 241 transitions, 2333 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:43:27,176 INFO L231 Difference]: Finished difference. Result has 299 places, 221 transitions, 1865 flow [2024-06-14 12:43:27,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1865, PETRI_PLACES=299, PETRI_TRANSITIONS=221} [2024-06-14 12:43:27,176 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 267 predicate places. [2024-06-14 12:43:27,177 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 221 transitions, 1865 flow [2024-06-14 12:43:27,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:27,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:27,177 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 12:43:27,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-14 12:43:27,177 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 12:43:27,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash -276020107, now seen corresponding path program 1 times [2024-06-14 12:43:27,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:27,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344235135] [2024-06-14 12:43:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:27,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:28,116 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 12:43:28,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:28,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344235135] [2024-06-14 12:43:28,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344235135] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:28,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:28,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:28,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855385874] [2024-06-14 12:43:28,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:28,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:28,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:28,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:28,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:28,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:28,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 221 transitions, 1865 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:28,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:28,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:28,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:28,588 INFO L124 PetriNetUnfolderBase]: 510/1054 cut-off events. [2024-06-14 12:43:28,588 INFO L125 PetriNetUnfolderBase]: For 54161/54161 co-relation queries the response was YES. [2024-06-14 12:43:28,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5009 conditions, 1054 events. 510/1054 cut-off events. For 54161/54161 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6422 event pairs, 103 based on Foata normal form. 2/1054 useless extension candidates. Maximal degree in co-relation 4883. Up to 894 conditions per place. [2024-06-14 12:43:28,597 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2024-06-14 12:43:28,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 236 transitions, 2377 flow [2024-06-14 12:43:28,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:43:28,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:43:28,598 INFO L175 Difference]: Start difference. First operand has 299 places, 221 transitions, 1865 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:43:28,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 236 transitions, 2377 flow [2024-06-14 12:43:28,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 236 transitions, 2122 flow, removed 22 selfloop flow, removed 17 redundant places. [2024-06-14 12:43:28,736 INFO L231 Difference]: Finished difference. Result has 293 places, 222 transitions, 1698 flow [2024-06-14 12:43:28,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1698, PETRI_PLACES=293, PETRI_TRANSITIONS=222} [2024-06-14 12:43:28,736 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-14 12:43:28,736 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 222 transitions, 1698 flow [2024-06-14 12:43:28,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:28,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:28,736 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 12:43:28,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-14 12:43:28,737 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 12:43:28,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:28,737 INFO L85 PathProgramCache]: Analyzing trace with hash -281526637, now seen corresponding path program 2 times [2024-06-14 12:43:28,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:28,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869208001] [2024-06-14 12:43:28,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:28,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:28,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:29,666 INFO 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 12:43:29,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:29,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869208001] [2024-06-14 12:43:29,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869208001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:29,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:29,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902822759] [2024-06-14 12:43:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:29,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:29,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:29,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:29,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:29,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:29,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 222 transitions, 1698 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:29,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:29,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:29,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:30,162 INFO L124 PetriNetUnfolderBase]: 521/1075 cut-off events. [2024-06-14 12:43:30,163 INFO L125 PetriNetUnfolderBase]: For 63038/63038 co-relation queries the response was YES. [2024-06-14 12:43:30,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 1075 events. 521/1075 cut-off events. For 63038/63038 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6574 event pairs, 110 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 4794. Up to 872 conditions per place. [2024-06-14 12:43:30,173 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 201 selfloop transitions, 35 changer transitions 0/240 dead transitions. [2024-06-14 12:43:30,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 240 transitions, 2432 flow [2024-06-14 12:43:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:30,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:43:30,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-14 12:43:30,174 INFO L175 Difference]: Start difference. First operand has 293 places, 222 transitions, 1698 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:43:30,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 240 transitions, 2432 flow [2024-06-14 12:43:30,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 240 transitions, 2320 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 12:43:30,373 INFO L231 Difference]: Finished difference. Result has 294 places, 224 transitions, 1698 flow [2024-06-14 12:43:30,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1698, PETRI_PLACES=294, PETRI_TRANSITIONS=224} [2024-06-14 12:43:30,374 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 262 predicate places. [2024-06-14 12:43:30,374 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 224 transitions, 1698 flow [2024-06-14 12:43:30,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:30,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:30,375 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 12:43:30,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-14 12:43:30,375 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 12:43:30,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:30,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1468488023, now seen corresponding path program 3 times [2024-06-14 12:43:30,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:30,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106342207] [2024-06-14 12:43:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:30,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:31,500 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 12:43:31,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:31,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106342207] [2024-06-14 12:43:31,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106342207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:31,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:31,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:31,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126686788] [2024-06-14 12:43:31,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:31,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:31,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:31,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:31,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:31,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:31,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 224 transitions, 1698 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:31,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:31,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:31,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:32,041 INFO L124 PetriNetUnfolderBase]: 525/1083 cut-off events. [2024-06-14 12:43:32,042 INFO L125 PetriNetUnfolderBase]: For 65329/65329 co-relation queries the response was YES. [2024-06-14 12:43:32,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4904 conditions, 1083 events. 525/1083 cut-off events. For 65329/65329 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6618 event pairs, 112 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 4784. Up to 915 conditions per place. [2024-06-14 12:43:32,050 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 200 selfloop transitions, 35 changer transitions 0/239 dead transitions. [2024-06-14 12:43:32,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 239 transitions, 2220 flow [2024-06-14 12:43:32,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:32,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:32,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:43:32,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:43:32,051 INFO L175 Difference]: Start difference. First operand has 294 places, 224 transitions, 1698 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:43:32,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 239 transitions, 2220 flow [2024-06-14 12:43:32,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 239 transitions, 2156 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:32,222 INFO L231 Difference]: Finished difference. Result has 298 places, 225 transitions, 1731 flow [2024-06-14 12:43:32,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1731, PETRI_PLACES=298, PETRI_TRANSITIONS=225} [2024-06-14 12:43:32,223 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 266 predicate places. [2024-06-14 12:43:32,223 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 225 transitions, 1731 flow [2024-06-14 12:43:32,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:32,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:32,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-14 12:43:32,224 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 12:43:32,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1774259979, now seen corresponding path program 4 times [2024-06-14 12:43:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838028035] [2024-06-14 12:43:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:32,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:33,119 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 12:43:33,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:33,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838028035] [2024-06-14 12:43:33,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838028035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:33,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:33,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:33,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125109954] [2024-06-14 12:43:33,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:33,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:33,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:33,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:33,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:33,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:33,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 225 transitions, 1731 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:33,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:33,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:33,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:33,585 INFO L124 PetriNetUnfolderBase]: 522/1078 cut-off events. [2024-06-14 12:43:33,585 INFO L125 PetriNetUnfolderBase]: For 56094/56094 co-relation queries the response was YES. [2024-06-14 12:43:33,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4714 conditions, 1078 events. 522/1078 cut-off events. For 56094/56094 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6613 event pairs, 113 based on Foata normal form. 2/1078 useless extension candidates. Maximal degree in co-relation 4592. Up to 918 conditions per place. [2024-06-14 12:43:33,595 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 202 selfloop transitions, 33 changer transitions 0/239 dead transitions. [2024-06-14 12:43:33,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 239 transitions, 2233 flow [2024-06-14 12:43:33,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:33,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:33,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-14 12:43:33,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39118457300275483 [2024-06-14 12:43:33,596 INFO L175 Difference]: Start difference. First operand has 298 places, 225 transitions, 1731 flow. Second operand 11 states and 142 transitions. [2024-06-14 12:43:33,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 239 transitions, 2233 flow [2024-06-14 12:43:33,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 239 transitions, 2138 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:33,766 INFO L231 Difference]: Finished difference. Result has 300 places, 225 transitions, 1706 flow [2024-06-14 12:43:33,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1706, PETRI_PLACES=300, PETRI_TRANSITIONS=225} [2024-06-14 12:43:33,767 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2024-06-14 12:43:33,767 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 225 transitions, 1706 flow [2024-06-14 12:43:33,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:33,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:33,767 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 12:43:33,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-14 12:43:33,767 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 12:43:33,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:33,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1824963603, now seen corresponding path program 5 times [2024-06-14 12:43:33,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:33,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566590223] [2024-06-14 12:43:33,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:33,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:34,708 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 12:43:34,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:34,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566590223] [2024-06-14 12:43:34,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566590223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:34,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:34,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:34,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612406340] [2024-06-14 12:43:34,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:34,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:34,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:34,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:34,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:34,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:34,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 225 transitions, 1706 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:34,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:34,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:34,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:35,181 INFO L124 PetriNetUnfolderBase]: 526/1086 cut-off events. [2024-06-14 12:43:35,181 INFO L125 PetriNetUnfolderBase]: For 58285/58285 co-relation queries the response was YES. [2024-06-14 12:43:35,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4737 conditions, 1086 events. 526/1086 cut-off events. For 58285/58285 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6670 event pairs, 109 based on Foata normal form. 2/1086 useless extension candidates. Maximal degree in co-relation 4614. Up to 878 conditions per place. [2024-06-14 12:43:35,194 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 200 selfloop transitions, 37 changer transitions 0/241 dead transitions. [2024-06-14 12:43:35,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 241 transitions, 2236 flow [2024-06-14 12:43:35,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:43:35,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 12:43:35,195 INFO L175 Difference]: Start difference. First operand has 300 places, 225 transitions, 1706 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:43:35,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 241 transitions, 2236 flow [2024-06-14 12:43:35,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 241 transitions, 2161 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-14 12:43:35,369 INFO L231 Difference]: Finished difference. Result has 301 places, 226 transitions, 1734 flow [2024-06-14 12:43:35,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1734, PETRI_PLACES=301, PETRI_TRANSITIONS=226} [2024-06-14 12:43:35,370 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 269 predicate places. [2024-06-14 12:43:35,370 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 226 transitions, 1734 flow [2024-06-14 12:43:35,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:35,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:35,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:43:35,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-14 12:43:35,371 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 12:43:35,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:35,371 INFO L85 PathProgramCache]: Analyzing trace with hash 849238119, now seen corresponding path program 6 times [2024-06-14 12:43:35,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:35,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466613301] [2024-06-14 12:43:35,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:35,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:36,278 INFO 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 12:43:36,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:36,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466613301] [2024-06-14 12:43:36,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466613301] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:36,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:36,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:36,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321308291] [2024-06-14 12:43:36,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:36,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:36,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:36,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:36,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 226 transitions, 1734 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:36,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:36,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:36,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:36,705 INFO L124 PetriNetUnfolderBase]: 530/1094 cut-off events. [2024-06-14 12:43:36,705 INFO L125 PetriNetUnfolderBase]: For 59875/59875 co-relation queries the response was YES. [2024-06-14 12:43:36,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4814 conditions, 1094 events. 530/1094 cut-off events. For 59875/59875 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6730 event pairs, 109 based on Foata normal form. 2/1094 useless extension candidates. Maximal degree in co-relation 4690. Up to 798 conditions per place. [2024-06-14 12:43:36,716 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 201 selfloop transitions, 38 changer transitions 0/243 dead transitions. [2024-06-14 12:43:36,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 243 transitions, 2272 flow [2024-06-14 12:43:36,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:36,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:36,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-14 12:43:36,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022038567493113 [2024-06-14 12:43:36,719 INFO L175 Difference]: Start difference. First operand has 301 places, 226 transitions, 1734 flow. Second operand 11 states and 146 transitions. [2024-06-14 12:43:36,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 243 transitions, 2272 flow [2024-06-14 12:43:36,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 243 transitions, 2181 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:36,913 INFO L231 Difference]: Finished difference. Result has 303 places, 227 transitions, 1749 flow [2024-06-14 12:43:36,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1749, PETRI_PLACES=303, PETRI_TRANSITIONS=227} [2024-06-14 12:43:36,913 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 271 predicate places. [2024-06-14 12:43:36,913 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 227 transitions, 1749 flow [2024-06-14 12:43:36,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:36,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:36,913 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 12:43:36,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-14 12:43:36,914 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 12:43:36,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 694424453, now seen corresponding path program 7 times [2024-06-14 12:43:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:36,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997598228] [2024-06-14 12:43:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:36,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:37,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997598228] [2024-06-14 12:43:37,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997598228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:37,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:37,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025373948] [2024-06-14 12:43:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:37,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:38,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:38,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 227 transitions, 1749 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:38,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:38,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:38,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:38,435 INFO L124 PetriNetUnfolderBase]: 541/1115 cut-off events. [2024-06-14 12:43:38,436 INFO L125 PetriNetUnfolderBase]: For 71344/71344 co-relation queries the response was YES. [2024-06-14 12:43:38,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5173 conditions, 1115 events. 541/1115 cut-off events. For 71344/71344 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6863 event pairs, 98 based on Foata normal form. 2/1115 useless extension candidates. Maximal degree in co-relation 5048. Up to 831 conditions per place. [2024-06-14 12:43:38,445 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 205 selfloop transitions, 39 changer transitions 0/248 dead transitions. [2024-06-14 12:43:38,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 248 transitions, 2533 flow [2024-06-14 12:43:38,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:38,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:38,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-14 12:43:38,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-14 12:43:38,446 INFO L175 Difference]: Start difference. First operand has 303 places, 227 transitions, 1749 flow. Second operand 11 states and 149 transitions. [2024-06-14 12:43:38,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 248 transitions, 2533 flow [2024-06-14 12:43:38,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 248 transitions, 2437 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:38,640 INFO L231 Difference]: Finished difference. Result has 305 places, 229 transitions, 1789 flow [2024-06-14 12:43:38,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1789, PETRI_PLACES=305, PETRI_TRANSITIONS=229} [2024-06-14 12:43:38,640 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 273 predicate places. [2024-06-14 12:43:38,640 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 229 transitions, 1789 flow [2024-06-14 12:43:38,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:38,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:38,641 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 12:43:38,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-14 12:43:38,641 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 12:43:38,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1979398929, now seen corresponding path program 8 times [2024-06-14 12:43:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:38,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559865610] [2024-06-14 12:43:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:39,759 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 12:43:39,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:39,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559865610] [2024-06-14 12:43:39,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559865610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:39,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:39,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-14 12:43:39,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976732524] [2024-06-14 12:43:39,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:39,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-14 12:43:39,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:39,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-14 12:43:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-14 12:43:39,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:39,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 229 transitions, 1789 flow. Second operand has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:39,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:39,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:39,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:40,155 INFO L124 PetriNetUnfolderBase]: 545/1121 cut-off events. [2024-06-14 12:43:40,155 INFO L125 PetriNetUnfolderBase]: For 72899/72899 co-relation queries the response was YES. [2024-06-14 12:43:40,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5225 conditions, 1121 events. 545/1121 cut-off events. For 72899/72899 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6935 event pairs, 103 based on Foata normal form. 2/1117 useless extension candidates. Maximal degree in co-relation 5099. Up to 1004 conditions per place. [2024-06-14 12:43:40,165 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 213 selfloop transitions, 26 changer transitions 0/243 dead transitions. [2024-06-14 12:43:40,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 243 transitions, 2327 flow [2024-06-14 12:43:40,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-14 12:43:40,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2024-06-14 12:43:40,166 INFO L175 Difference]: Start difference. First operand has 305 places, 229 transitions, 1789 flow. Second operand 11 states and 143 transitions. [2024-06-14 12:43:40,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 243 transitions, 2327 flow [2024-06-14 12:43:40,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 243 transitions, 2233 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:40,416 INFO L231 Difference]: Finished difference. Result has 308 places, 230 transitions, 1781 flow [2024-06-14 12:43:40,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1701, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1781, PETRI_PLACES=308, PETRI_TRANSITIONS=230} [2024-06-14 12:43:40,416 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 276 predicate places. [2024-06-14 12:43:40,417 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 230 transitions, 1781 flow [2024-06-14 12:43:40,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.454545454545455) internal successors, (104), 11 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:40,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:40,417 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 12:43:40,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-14 12:43:40,417 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 12:43:40,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:40,418 INFO L85 PathProgramCache]: Analyzing trace with hash 870732411, now seen corresponding path program 9 times [2024-06-14 12:43:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:40,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880424505] [2024-06-14 12:43:40,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:40,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:41,635 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 12:43:41,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:41,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880424505] [2024-06-14 12:43:41,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880424505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:41,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:41,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:41,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738621289] [2024-06-14 12:43:41,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:41,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:41,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:41,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:41,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:41,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:41,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 230 transitions, 1781 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:41,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:41,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:41,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:42,143 INFO L124 PetriNetUnfolderBase]: 549/1129 cut-off events. [2024-06-14 12:43:42,143 INFO L125 PetriNetUnfolderBase]: For 73838/73838 co-relation queries the response was YES. [2024-06-14 12:43:42,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 1129 events. 549/1129 cut-off events. For 73838/73838 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7014 event pairs, 103 based on Foata normal form. 2/1125 useless extension candidates. Maximal degree in co-relation 5102. Up to 998 conditions per place. [2024-06-14 12:43:42,153 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 214 selfloop transitions, 27 changer transitions 0/245 dead transitions. [2024-06-14 12:43:42,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 245 transitions, 2321 flow [2024-06-14 12:43:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:43:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:43:42,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:43:42,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:43:42,154 INFO L175 Difference]: Start difference. First operand has 308 places, 230 transitions, 1781 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:43:42,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 245 transitions, 2321 flow [2024-06-14 12:43:42,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 245 transitions, 2253 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:42,392 INFO L231 Difference]: Finished difference. Result has 311 places, 231 transitions, 1797 flow [2024-06-14 12:43:42,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1797, PETRI_PLACES=311, PETRI_TRANSITIONS=231} [2024-06-14 12:43:42,392 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-14 12:43:42,393 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 231 transitions, 1797 flow [2024-06-14 12:43:42,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:42,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:42,393 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 12:43:42,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-14 12:43:42,393 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 12:43:42,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:42,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1273940513, now seen corresponding path program 10 times [2024-06-14 12:43:42,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:42,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078582980] [2024-06-14 12:43:42,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:42,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:43,503 INFO 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 12:43:43,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:43,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078582980] [2024-06-14 12:43:43,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078582980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:43,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:43,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:43,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646893872] [2024-06-14 12:43:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:43,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:43,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:43,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:43,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 231 transitions, 1797 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:43,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:43,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:43,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:43,993 INFO L124 PetriNetUnfolderBase]: 553/1139 cut-off events. [2024-06-14 12:43:43,993 INFO L125 PetriNetUnfolderBase]: For 75494/75494 co-relation queries the response was YES. [2024-06-14 12:43:44,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 1139 events. 553/1139 cut-off events. For 75494/75494 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7048 event pairs, 101 based on Foata normal form. 2/1139 useless extension candidates. Maximal degree in co-relation 5162. Up to 893 conditions per place. [2024-06-14 12:43:44,004 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 201 selfloop transitions, 45 changer transitions 0/250 dead transitions. [2024-06-14 12:43:44,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 250 transitions, 2563 flow [2024-06-14 12:43:44,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:43:44,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 12:43:44,005 INFO L175 Difference]: Start difference. First operand has 311 places, 231 transitions, 1797 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:43:44,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 250 transitions, 2563 flow [2024-06-14 12:43:44,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 250 transitions, 2495 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:44,186 INFO L231 Difference]: Finished difference. Result has 313 places, 232 transitions, 1851 flow [2024-06-14 12:43:44,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1729, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=313, PETRI_TRANSITIONS=232} [2024-06-14 12:43:44,187 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 281 predicate places. [2024-06-14 12:43:44,187 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 232 transitions, 1851 flow [2024-06-14 12:43:44,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:44,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:44,187 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 12:43:44,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-14 12:43:44,187 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 12:43:44,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:44,188 INFO L85 PathProgramCache]: Analyzing trace with hash 8055215, now seen corresponding path program 11 times [2024-06-14 12:43:44,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:44,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989128066] [2024-06-14 12:43:44,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:44,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:44,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:45,151 INFO 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 12:43:45,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:45,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989128066] [2024-06-14 12:43:45,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989128066] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:45,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:45,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:45,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848977511] [2024-06-14 12:43:45,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:45,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:45,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:45,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:45,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 232 transitions, 1851 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:45,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:45,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:45,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:45,686 INFO L124 PetriNetUnfolderBase]: 557/1147 cut-off events. [2024-06-14 12:43:45,686 INFO L125 PetriNetUnfolderBase]: For 76978/76978 co-relation queries the response was YES. [2024-06-14 12:43:45,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5395 conditions, 1147 events. 557/1147 cut-off events. For 76978/76978 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7097 event pairs, 85 based on Foata normal form. 2/1147 useless extension candidates. Maximal degree in co-relation 5266. Up to 885 conditions per place. [2024-06-14 12:43:45,701 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 214 selfloop transitions, 34 changer transitions 0/252 dead transitions. [2024-06-14 12:43:45,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 252 transitions, 2417 flow [2024-06-14 12:43:45,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:45,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-14 12:43:45,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3884297520661157 [2024-06-14 12:43:45,703 INFO L175 Difference]: Start difference. First operand has 313 places, 232 transitions, 1851 flow. Second operand 11 states and 141 transitions. [2024-06-14 12:43:45,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 252 transitions, 2417 flow [2024-06-14 12:43:46,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 252 transitions, 2305 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:46,008 INFO L231 Difference]: Finished difference. Result has 315 places, 233 transitions, 1842 flow [2024-06-14 12:43:46,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1739, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1842, PETRI_PLACES=315, PETRI_TRANSITIONS=233} [2024-06-14 12:43:46,009 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 283 predicate places. [2024-06-14 12:43:46,009 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 233 transitions, 1842 flow [2024-06-14 12:43:46,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:46,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:46,010 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 12:43:46,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-14 12:43:46,010 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 12:43:46,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:46,011 INFO L85 PathProgramCache]: Analyzing trace with hash 825499025, now seen corresponding path program 1 times [2024-06-14 12:43:46,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:46,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057291328] [2024-06-14 12:43:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:47,585 INFO 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 12:43:47,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057291328] [2024-06-14 12:43:47,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057291328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:47,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:47,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:43:47,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620762930] [2024-06-14 12:43:47,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:47,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:43:47,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:47,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:43:47,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:43:47,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:47,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 233 transitions, 1842 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:47,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:47,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:47,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:48,157 INFO L124 PetriNetUnfolderBase]: 576/1193 cut-off events. [2024-06-14 12:43:48,157 INFO L125 PetriNetUnfolderBase]: For 108907/108907 co-relation queries the response was YES. [2024-06-14 12:43:48,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5611 conditions, 1193 events. 576/1193 cut-off events. For 108907/108907 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7428 event pairs, 133 based on Foata normal form. 8/1197 useless extension candidates. Maximal degree in co-relation 5481. Up to 1035 conditions per place. [2024-06-14 12:43:48,168 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 220 selfloop transitions, 25 changer transitions 9/258 dead transitions. [2024-06-14 12:43:48,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 258 transitions, 2506 flow [2024-06-14 12:43:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:43:48,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:43:48,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-14 12:43:48,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37995337995337997 [2024-06-14 12:43:48,169 INFO L175 Difference]: Start difference. First operand has 315 places, 233 transitions, 1842 flow. Second operand 13 states and 163 transitions. [2024-06-14 12:43:48,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 258 transitions, 2506 flow [2024-06-14 12:43:48,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 258 transitions, 2419 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:48,370 INFO L231 Difference]: Finished difference. Result has 324 places, 239 transitions, 1880 flow [2024-06-14 12:43:48,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1880, PETRI_PLACES=324, PETRI_TRANSITIONS=239} [2024-06-14 12:43:48,371 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-14 12:43:48,371 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 239 transitions, 1880 flow [2024-06-14 12:43:48,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:48,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:48,371 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 12:43:48,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-14 12:43:48,371 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 12:43:48,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:48,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1534780013, now seen corresponding path program 2 times [2024-06-14 12:43:48,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:48,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170451712] [2024-06-14 12:43:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:48,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:49,570 INFO 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 12:43:49,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:49,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170451712] [2024-06-14 12:43:49,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170451712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:49,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:49,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:43:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895055719] [2024-06-14 12:43:49,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:43:49,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:49,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:43:49,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:43:49,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:49,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 239 transitions, 1880 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:49,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:49,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:49,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:50,159 INFO L124 PetriNetUnfolderBase]: 589/1223 cut-off events. [2024-06-14 12:43:50,160 INFO L125 PetriNetUnfolderBase]: For 141553/141553 co-relation queries the response was YES. [2024-06-14 12:43:50,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6627 conditions, 1223 events. 589/1223 cut-off events. For 141553/141553 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7577 event pairs, 138 based on Foata normal form. 6/1227 useless extension candidates. Maximal degree in co-relation 6491. Up to 983 conditions per place. [2024-06-14 12:43:50,171 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 211 selfloop transitions, 36 changer transitions 9/260 dead transitions. [2024-06-14 12:43:50,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 260 transitions, 2758 flow [2024-06-14 12:43:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:43:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:43:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-14 12:43:50,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-14 12:43:50,172 INFO L175 Difference]: Start difference. First operand has 324 places, 239 transitions, 1880 flow. Second operand 12 states and 158 transitions. [2024-06-14 12:43:50,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 260 transitions, 2758 flow [2024-06-14 12:43:50,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 260 transitions, 2714 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-14 12:43:50,600 INFO L231 Difference]: Finished difference. Result has 326 places, 234 transitions, 1867 flow [2024-06-14 12:43:50,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1867, PETRI_PLACES=326, PETRI_TRANSITIONS=234} [2024-06-14 12:43:50,601 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-14 12:43:50,601 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 234 transitions, 1867 flow [2024-06-14 12:43:50,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:50,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:50,601 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 12:43:50,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-14 12:43:50,602 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 12:43:50,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:50,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1129690507, now seen corresponding path program 3 times [2024-06-14 12:43:50,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:50,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686950414] [2024-06-14 12:43:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:50,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:51,868 INFO 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 12:43:51,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:51,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686950414] [2024-06-14 12:43:51,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686950414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:51,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:51,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:43:51,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358234581] [2024-06-14 12:43:51,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:51,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:43:51,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:51,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:43:51,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:43:52,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:52,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 234 transitions, 1867 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:52,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:52,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:52,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:52,522 INFO L124 PetriNetUnfolderBase]: 583/1209 cut-off events. [2024-06-14 12:43:52,522 INFO L125 PetriNetUnfolderBase]: For 152943/152943 co-relation queries the response was YES. [2024-06-14 12:43:52,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6638 conditions, 1209 events. 583/1209 cut-off events. For 152943/152943 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7474 event pairs, 131 based on Foata normal form. 8/1215 useless extension candidates. Maximal degree in co-relation 6503. Up to 1028 conditions per place. [2024-06-14 12:43:52,534 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 198 selfloop transitions, 38 changer transitions 13/253 dead transitions. [2024-06-14 12:43:52,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 253 transitions, 2473 flow [2024-06-14 12:43:52,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:43:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:43:52,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:43:52,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-14 12:43:52,535 INFO L175 Difference]: Start difference. First operand has 326 places, 234 transitions, 1867 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:43:52,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 253 transitions, 2473 flow [2024-06-14 12:43:52,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 253 transitions, 2395 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-14 12:43:52,948 INFO L231 Difference]: Finished difference. Result has 321 places, 227 transitions, 1817 flow [2024-06-14 12:43:52,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1789, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1817, PETRI_PLACES=321, PETRI_TRANSITIONS=227} [2024-06-14 12:43:52,948 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 289 predicate places. [2024-06-14 12:43:52,948 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 227 transitions, 1817 flow [2024-06-14 12:43:52,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:52,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:52,949 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 12:43:52,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-14 12:43:52,949 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 12:43:52,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1385338547, now seen corresponding path program 12 times [2024-06-14 12:43:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:52,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264132482] [2024-06-14 12:43:52,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:52,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:53,916 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 12:43:53,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:53,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264132482] [2024-06-14 12:43:53,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264132482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:53,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:53,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:53,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247744603] [2024-06-14 12:43:53,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:53,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:53,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:53,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:53,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:54,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:54,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 227 transitions, 1817 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:54,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:54,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:54,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:54,434 INFO L124 PetriNetUnfolderBase]: 563/1171 cut-off events. [2024-06-14 12:43:54,434 INFO L125 PetriNetUnfolderBase]: For 119814/119814 co-relation queries the response was YES. [2024-06-14 12:43:54,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6436 conditions, 1171 events. 563/1171 cut-off events. For 119814/119814 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7259 event pairs, 142 based on Foata normal form. 2/1167 useless extension candidates. Maximal degree in co-relation 6304. Up to 945 conditions per place. [2024-06-14 12:43:54,443 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 47 changer transitions 0/240 dead transitions. [2024-06-14 12:43:54,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 240 transitions, 2343 flow [2024-06-14 12:43:54,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:54,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:54,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:43:54,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-14 12:43:54,444 INFO L175 Difference]: Start difference. First operand has 321 places, 227 transitions, 1817 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:43:54,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 240 transitions, 2343 flow [2024-06-14 12:43:54,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 240 transitions, 2249 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:43:54,854 INFO L231 Difference]: Finished difference. Result has 317 places, 228 transitions, 1851 flow [2024-06-14 12:43:54,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=317, PETRI_TRANSITIONS=228} [2024-06-14 12:43:54,855 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-14 12:43:54,855 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 228 transitions, 1851 flow [2024-06-14 12:43:54,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:54,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:54,855 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 12:43:54,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-14 12:43:54,855 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 12:43:54,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:54,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1392432945, now seen corresponding path program 13 times [2024-06-14 12:43:54,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:54,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042347064] [2024-06-14 12:43:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:55,886 INFO 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 12:43:55,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:55,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042347064] [2024-06-14 12:43:55,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042347064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:55,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:55,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884729057] [2024-06-14 12:43:55,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:55,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:55,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:55,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:55,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:56,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:56,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 228 transitions, 1851 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:56,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:56,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:56,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:56,444 INFO L124 PetriNetUnfolderBase]: 574/1192 cut-off events. [2024-06-14 12:43:56,444 INFO L125 PetriNetUnfolderBase]: For 129394/129394 co-relation queries the response was YES. [2024-06-14 12:43:56,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6799 conditions, 1192 events. 574/1192 cut-off events. For 129394/129394 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7394 event pairs, 143 based on Foata normal form. 2/1188 useless extension candidates. Maximal degree in co-relation 6668. Up to 927 conditions per place. [2024-06-14 12:43:56,455 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 49 changer transitions 0/244 dead transitions. [2024-06-14 12:43:56,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 244 transitions, 2629 flow [2024-06-14 12:43:56,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:43:56,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:43:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-14 12:43:56,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418732782369146 [2024-06-14 12:43:56,456 INFO L175 Difference]: Start difference. First operand has 317 places, 228 transitions, 1851 flow. Second operand 11 states and 152 transitions. [2024-06-14 12:43:56,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 244 transitions, 2629 flow [2024-06-14 12:43:56,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 244 transitions, 2511 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:43:56,875 INFO L231 Difference]: Finished difference. Result has 319 places, 230 transitions, 1897 flow [2024-06-14 12:43:56,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1733, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1897, PETRI_PLACES=319, PETRI_TRANSITIONS=230} [2024-06-14 12:43:56,875 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 12:43:56,875 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 230 transitions, 1897 flow [2024-06-14 12:43:56,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:56,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:56,875 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 12:43:56,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-14 12:43:56,876 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 12:43:56,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:56,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1552518887, now seen corresponding path program 14 times [2024-06-14 12:43:56,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:56,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952207821] [2024-06-14 12:43:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:56,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:43:57,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:57,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952207821] [2024-06-14 12:43:57,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952207821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:57,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:57,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:57,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104928981] [2024-06-14 12:43:57,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:57,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:57,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:58,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:58,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 230 transitions, 1897 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:58,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:58,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:58,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:43:58,354 INFO L124 PetriNetUnfolderBase]: 571/1187 cut-off events. [2024-06-14 12:43:58,355 INFO L125 PetriNetUnfolderBase]: For 120728/120728 co-relation queries the response was YES. [2024-06-14 12:43:58,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6546 conditions, 1187 events. 571/1187 cut-off events. For 120728/120728 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7391 event pairs, 144 based on Foata normal form. 2/1183 useless extension candidates. Maximal degree in co-relation 6414. Up to 961 conditions per place. [2024-06-14 12:43:58,366 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 188 selfloop transitions, 50 changer transitions 0/242 dead transitions. [2024-06-14 12:43:58,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 242 transitions, 2399 flow [2024-06-14 12:43:58,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:43:58,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:43:58,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-14 12:43:58,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-14 12:43:58,367 INFO L175 Difference]: Start difference. First operand has 319 places, 230 transitions, 1897 flow. Second operand 12 states and 158 transitions. [2024-06-14 12:43:58,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 242 transitions, 2399 flow [2024-06-14 12:43:58,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 242 transitions, 2287 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-14 12:43:58,737 INFO L231 Difference]: Finished difference. Result has 324 places, 230 transitions, 1889 flow [2024-06-14 12:43:58,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1889, PETRI_PLACES=324, PETRI_TRANSITIONS=230} [2024-06-14 12:43:58,738 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-14 12:43:58,738 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 230 transitions, 1889 flow [2024-06-14 12:43:58,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:58,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:43:58,738 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 12:43:58,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-14 12:43:58,738 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 12:43:58,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:43:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash 527058663, now seen corresponding path program 15 times [2024-06-14 12:43:58,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:43:58,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293309775] [2024-06-14 12:43:58,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:43:58,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:43:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:43:59,675 INFO 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 12:43:59,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:43:59,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293309775] [2024-06-14 12:43:59,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293309775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:43:59,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:43:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:43:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334161514] [2024-06-14 12:43:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:43:59,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:43:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:43:59,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:43:59,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:43:59,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:43:59,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 230 transitions, 1889 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:43:59,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:43:59,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:43:59,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:00,255 INFO L124 PetriNetUnfolderBase]: 575/1195 cut-off events. [2024-06-14 12:44:00,255 INFO L125 PetriNetUnfolderBase]: For 122636/122636 co-relation queries the response was YES. [2024-06-14 12:44:00,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6614 conditions, 1195 events. 575/1195 cut-off events. For 122636/122636 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7419 event pairs, 146 based on Foata normal form. 2/1191 useless extension candidates. Maximal degree in co-relation 6480. Up to 969 conditions per place. [2024-06-14 12:44:00,266 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 50 changer transitions 0/243 dead transitions. [2024-06-14 12:44:00,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 243 transitions, 2425 flow [2024-06-14 12:44:00,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:00,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-14 12:44:00,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39944903581267216 [2024-06-14 12:44:00,267 INFO L175 Difference]: Start difference. First operand has 324 places, 230 transitions, 1889 flow. Second operand 11 states and 145 transitions. [2024-06-14 12:44:00,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 243 transitions, 2425 flow [2024-06-14 12:44:00,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 243 transitions, 2319 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:00,686 INFO L231 Difference]: Finished difference. Result has 324 places, 231 transitions, 1921 flow [2024-06-14 12:44:00,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1921, PETRI_PLACES=324, PETRI_TRANSITIONS=231} [2024-06-14 12:44:00,687 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 292 predicate places. [2024-06-14 12:44:00,687 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 231 transitions, 1921 flow [2024-06-14 12:44:00,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:00,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:00,687 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 12:44:00,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-14 12:44:00,687 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 12:44:00,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:00,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1158026221, now seen corresponding path program 16 times [2024-06-14 12:44:00,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:00,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066271947] [2024-06-14 12:44:00,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:00,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:01,766 INFO 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 12:44:01,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:01,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066271947] [2024-06-14 12:44:01,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066271947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:01,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:01,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:01,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95841823] [2024-06-14 12:44:01,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:01,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:01,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:01,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:01,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:01,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:01,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 231 transitions, 1921 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:01,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:01,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:01,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:02,366 INFO L124 PetriNetUnfolderBase]: 579/1201 cut-off events. [2024-06-14 12:44:02,366 INFO L125 PetriNetUnfolderBase]: For 125502/125502 co-relation queries the response was YES. [2024-06-14 12:44:02,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6719 conditions, 1201 events. 579/1201 cut-off events. For 125502/125502 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7499 event pairs, 129 based on Foata normal form. 2/1193 useless extension candidates. Maximal degree in co-relation 6584. Up to 903 conditions per place. [2024-06-14 12:44:02,377 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 174 selfloop transitions, 67 changer transitions 0/245 dead transitions. [2024-06-14 12:44:02,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 245 transitions, 2465 flow [2024-06-14 12:44:02,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:02,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:02,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 149 transitions. [2024-06-14 12:44:02,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41046831955922863 [2024-06-14 12:44:02,378 INFO L175 Difference]: Start difference. First operand has 324 places, 231 transitions, 1921 flow. Second operand 11 states and 149 transitions. [2024-06-14 12:44:02,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 245 transitions, 2465 flow [2024-06-14 12:44:02,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 245 transitions, 2337 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:02,769 INFO L231 Difference]: Finished difference. Result has 326 places, 232 transitions, 1967 flow [2024-06-14 12:44:02,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1967, PETRI_PLACES=326, PETRI_TRANSITIONS=232} [2024-06-14 12:44:02,770 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-14 12:44:02,770 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 232 transitions, 1967 flow [2024-06-14 12:44:02,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:02,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:02,770 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 12:44:02,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-14 12:44:02,770 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 12:44:02,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:02,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1300129291, now seen corresponding path program 17 times [2024-06-14 12:44:02,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:02,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010616363] [2024-06-14 12:44:02,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:02,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:03,860 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 12:44:03,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:03,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010616363] [2024-06-14 12:44:03,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010616363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:03,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:03,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:03,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979648858] [2024-06-14 12:44:03,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:03,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:03,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:03,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:03,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:03,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:03,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 232 transitions, 1967 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:03,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:03,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:03,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:04,323 INFO L124 PetriNetUnfolderBase]: 583/1209 cut-off events. [2024-06-14 12:44:04,323 INFO L125 PetriNetUnfolderBase]: For 127977/127977 co-relation queries the response was YES. [2024-06-14 12:44:04,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6817 conditions, 1209 events. 583/1209 cut-off events. For 127977/127977 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7532 event pairs, 131 based on Foata normal form. 2/1201 useless extension candidates. Maximal degree in co-relation 6681. Up to 776 conditions per place. [2024-06-14 12:44:04,334 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 172 selfloop transitions, 72 changer transitions 0/248 dead transitions. [2024-06-14 12:44:04,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 248 transitions, 2739 flow [2024-06-14 12:44:04,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:04,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:04,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-14 12:44:04,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41597796143250687 [2024-06-14 12:44:04,335 INFO L175 Difference]: Start difference. First operand has 326 places, 232 transitions, 1967 flow. Second operand 11 states and 151 transitions. [2024-06-14 12:44:04,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 248 transitions, 2739 flow [2024-06-14 12:44:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 248 transitions, 2575 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:04,681 INFO L231 Difference]: Finished difference. Result has 328 places, 233 transitions, 1987 flow [2024-06-14 12:44:04,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1987, PETRI_PLACES=328, PETRI_TRANSITIONS=233} [2024-06-14 12:44:04,681 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2024-06-14 12:44:04,681 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 233 transitions, 1987 flow [2024-06-14 12:44:04,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:04,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:04,682 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 12:44:04,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-14 12:44:04,682 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 12:44:04,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:04,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2042257931, now seen corresponding path program 18 times [2024-06-14 12:44:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847949401] [2024-06-14 12:44:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:04,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:05,529 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 12:44:05,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:05,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847949401] [2024-06-14 12:44:05,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847949401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:05,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:05,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624078083] [2024-06-14 12:44:05,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:05,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:05,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:05,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:05,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:05,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:05,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 233 transitions, 1987 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:05,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:05,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:05,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:05,993 INFO L124 PetriNetUnfolderBase]: 587/1219 cut-off events. [2024-06-14 12:44:05,993 INFO L125 PetriNetUnfolderBase]: For 130628/130628 co-relation queries the response was YES. [2024-06-14 12:44:06,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6896 conditions, 1219 events. 587/1219 cut-off events. For 130628/130628 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7592 event pairs, 152 based on Foata normal form. 2/1215 useless extension candidates. Maximal degree in co-relation 6759. Up to 993 conditions per place. [2024-06-14 12:44:06,003 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 51 changer transitions 0/246 dead transitions. [2024-06-14 12:44:06,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 246 transitions, 2535 flow [2024-06-14 12:44:06,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-14 12:44:06,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-06-14 12:44:06,004 INFO L175 Difference]: Start difference. First operand has 328 places, 233 transitions, 1987 flow. Second operand 11 states and 147 transitions. [2024-06-14 12:44:06,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 246 transitions, 2535 flow [2024-06-14 12:44:06,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 246 transitions, 2335 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:06,419 INFO L231 Difference]: Finished difference. Result has 329 places, 234 transitions, 1933 flow [2024-06-14 12:44:06,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1933, PETRI_PLACES=329, PETRI_TRANSITIONS=234} [2024-06-14 12:44:06,420 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 297 predicate places. [2024-06-14 12:44:06,420 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 234 transitions, 1933 flow [2024-06-14 12:44:06,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:06,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:06,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:06,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-14 12:44:06,420 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 12:44:06,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:06,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2058769955, now seen corresponding path program 19 times [2024-06-14 12:44:06,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:06,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243967564] [2024-06-14 12:44:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:06,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:07,391 INFO 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 12:44:07,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:07,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243967564] [2024-06-14 12:44:07,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243967564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:07,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:07,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:07,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22773336] [2024-06-14 12:44:07,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:07,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:07,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:07,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:07,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:07,516 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:07,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 234 transitions, 1933 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:07,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:07,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:07,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:07,911 INFO L124 PetriNetUnfolderBase]: 591/1227 cut-off events. [2024-06-14 12:44:07,911 INFO L125 PetriNetUnfolderBase]: For 132450/132450 co-relation queries the response was YES. [2024-06-14 12:44:07,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 1227 events. 591/1227 cut-off events. For 132450/132450 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7661 event pairs, 154 based on Foata normal form. 2/1223 useless extension candidates. Maximal degree in co-relation 6651. Up to 1001 conditions per place. [2024-06-14 12:44:07,923 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 52 changer transitions 0/247 dead transitions. [2024-06-14 12:44:07,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 247 transitions, 2478 flow [2024-06-14 12:44:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-14 12:44:07,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39669421487603307 [2024-06-14 12:44:07,924 INFO L175 Difference]: Start difference. First operand has 329 places, 234 transitions, 1933 flow. Second operand 11 states and 144 transitions. [2024-06-14 12:44:07,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 247 transitions, 2478 flow [2024-06-14 12:44:08,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 247 transitions, 2316 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:08,366 INFO L231 Difference]: Finished difference. Result has 330 places, 235 transitions, 1914 flow [2024-06-14 12:44:08,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1914, PETRI_PLACES=330, PETRI_TRANSITIONS=235} [2024-06-14 12:44:08,367 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 298 predicate places. [2024-06-14 12:44:08,367 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 235 transitions, 1914 flow [2024-06-14 12:44:08,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:08,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:08,367 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 12:44:08,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-14 12:44:08,367 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 12:44:08,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:08,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2053263425, now seen corresponding path program 20 times [2024-06-14 12:44:08,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:08,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058975732] [2024-06-14 12:44:08,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:08,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:09,294 INFO 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 12:44:09,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058975732] [2024-06-14 12:44:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058975732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:09,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:09,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58542203] [2024-06-14 12:44:09,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:09,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:09,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:09,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:09,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:09,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:09,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 235 transitions, 1914 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:09,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:09,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:09,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:09,807 INFO L124 PetriNetUnfolderBase]: 595/1235 cut-off events. [2024-06-14 12:44:09,807 INFO L125 PetriNetUnfolderBase]: For 134870/134870 co-relation queries the response was YES. [2024-06-14 12:44:09,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6771 conditions, 1235 events. 595/1235 cut-off events. For 134870/134870 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7725 event pairs, 154 based on Foata normal form. 2/1231 useless extension candidates. Maximal degree in co-relation 6635. Up to 956 conditions per place. [2024-06-14 12:44:09,820 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 191 selfloop transitions, 55 changer transitions 0/250 dead transitions. [2024-06-14 12:44:09,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 250 transitions, 2693 flow [2024-06-14 12:44:09,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:44:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:44:09,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-14 12:44:09,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40771349862258954 [2024-06-14 12:44:09,821 INFO L175 Difference]: Start difference. First operand has 330 places, 235 transitions, 1914 flow. Second operand 11 states and 148 transitions. [2024-06-14 12:44:09,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 250 transitions, 2693 flow [2024-06-14 12:44:10,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 250 transitions, 2561 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:10,236 INFO L231 Difference]: Finished difference. Result has 332 places, 236 transitions, 1931 flow [2024-06-14 12:44:10,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1931, PETRI_PLACES=332, PETRI_TRANSITIONS=236} [2024-06-14 12:44:10,237 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 300 predicate places. [2024-06-14 12:44:10,237 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 236 transitions, 1931 flow [2024-06-14 12:44:10,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:10,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:10,237 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 12:44:10,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-14 12:44:10,237 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 12:44:10,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:10,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1501313305, now seen corresponding path program 21 times [2024-06-14 12:44:10,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:10,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500762128] [2024-06-14 12:44:10,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:10,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:11,263 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 12:44:11,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:11,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500762128] [2024-06-14 12:44:11,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500762128] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:11,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:11,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:11,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801120260] [2024-06-14 12:44:11,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:11,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:11,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:11,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:11,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:11,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:11,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 236 transitions, 1931 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:11,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:11,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:11,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:11,750 INFO L124 PetriNetUnfolderBase]: 592/1230 cut-off events. [2024-06-14 12:44:11,750 INFO L125 PetriNetUnfolderBase]: For 124432/124432 co-relation queries the response was YES. [2024-06-14 12:44:11,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6488 conditions, 1230 events. 592/1230 cut-off events. For 124432/124432 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7694 event pairs, 155 based on Foata normal form. 2/1226 useless extension candidates. Maximal degree in co-relation 6351. Up to 1004 conditions per place. [2024-06-14 12:44:11,761 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 182 selfloop transitions, 62 changer transitions 0/248 dead transitions. [2024-06-14 12:44:11,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 248 transitions, 2445 flow [2024-06-14 12:44:11,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:11,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:44:11,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:44:11,762 INFO L175 Difference]: Start difference. First operand has 332 places, 236 transitions, 1931 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:44:11,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 248 transitions, 2445 flow [2024-06-14 12:44:12,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 248 transitions, 2233 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:12,239 INFO L231 Difference]: Finished difference. Result has 334 places, 236 transitions, 1847 flow [2024-06-14 12:44:12,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1847, PETRI_PLACES=334, PETRI_TRANSITIONS=236} [2024-06-14 12:44:12,239 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 302 predicate places. [2024-06-14 12:44:12,239 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 236 transitions, 1847 flow [2024-06-14 12:44:12,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:12,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:12,240 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 12:44:12,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-14 12:44:12,240 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 12:44:12,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:12,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1818431493, now seen corresponding path program 4 times [2024-06-14 12:44:12,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:12,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881848246] [2024-06-14 12:44:12,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:12,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:12,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:13,431 INFO 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 12:44:13,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:13,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881848246] [2024-06-14 12:44:13,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881848246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:13,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:13,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132726599] [2024-06-14 12:44:13,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:13,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:13,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:13,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:13,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:13,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:13,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 236 transitions, 1847 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:13,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:13,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:13,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:13,984 INFO L124 PetriNetUnfolderBase]: 604/1262 cut-off events. [2024-06-14 12:44:13,984 INFO L125 PetriNetUnfolderBase]: For 161027/161027 co-relation queries the response was YES. [2024-06-14 12:44:13,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6492 conditions, 1262 events. 604/1262 cut-off events. For 161027/161027 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7950 event pairs, 163 based on Foata normal form. 8/1264 useless extension candidates. Maximal degree in co-relation 6355. Up to 1008 conditions per place. [2024-06-14 12:44:13,996 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 191 selfloop transitions, 47 changer transitions 9/251 dead transitions. [2024-06-14 12:44:13,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 251 transitions, 2431 flow [2024-06-14 12:44:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:13,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-14 12:44:13,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40404040404040403 [2024-06-14 12:44:13,997 INFO L175 Difference]: Start difference. First operand has 334 places, 236 transitions, 1847 flow. Second operand 12 states and 160 transitions. [2024-06-14 12:44:13,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 251 transitions, 2431 flow [2024-06-14 12:44:14,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 251 transitions, 2297 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:14,458 INFO L231 Difference]: Finished difference. Result has 335 places, 233 transitions, 1793 flow [2024-06-14 12:44:14,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1793, PETRI_PLACES=335, PETRI_TRANSITIONS=233} [2024-06-14 12:44:14,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 303 predicate places. [2024-06-14 12:44:14,459 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 233 transitions, 1793 flow [2024-06-14 12:44:14,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:14,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:14,459 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 12:44:14,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-14 12:44:14,459 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 12:44:14,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1818757923, now seen corresponding path program 5 times [2024-06-14 12:44:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:14,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776952080] [2024-06-14 12:44:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:15,455 INFO 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 12:44:15,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:15,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776952080] [2024-06-14 12:44:15,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776952080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:15,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:15,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431669119] [2024-06-14 12:44:15,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:15,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:15,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:15,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:15,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:15,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:15,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 233 transitions, 1793 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:15,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:15,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:15,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:16,046 INFO L124 PetriNetUnfolderBase]: 595/1247 cut-off events. [2024-06-14 12:44:16,046 INFO L125 PetriNetUnfolderBase]: For 150644/150644 co-relation queries the response was YES. [2024-06-14 12:44:16,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6389 conditions, 1247 events. 595/1247 cut-off events. For 150644/150644 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7844 event pairs, 142 based on Foata normal form. 6/1243 useless extension candidates. Maximal degree in co-relation 6251. Up to 946 conditions per place. [2024-06-14 12:44:16,058 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 172 selfloop transitions, 60 changer transitions 12/248 dead transitions. [2024-06-14 12:44:16,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 248 transitions, 2353 flow [2024-06-14 12:44:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:16,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 12:44:16,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 12:44:16,059 INFO L175 Difference]: Start difference. First operand has 335 places, 233 transitions, 1793 flow. Second operand 12 states and 159 transitions. [2024-06-14 12:44:16,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 248 transitions, 2353 flow [2024-06-14 12:44:16,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 248 transitions, 2255 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:16,518 INFO L231 Difference]: Finished difference. Result has 333 places, 229 transitions, 1793 flow [2024-06-14 12:44:16,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1695, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1793, PETRI_PLACES=333, PETRI_TRANSITIONS=229} [2024-06-14 12:44:16,518 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 301 predicate places. [2024-06-14 12:44:16,518 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 229 transitions, 1793 flow [2024-06-14 12:44:16,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:16,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:16,519 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 12:44:16,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-14 12:44:16,519 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 12:44:16,519 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:16,519 INFO L85 PathProgramCache]: Analyzing trace with hash 800010049, now seen corresponding path program 6 times [2024-06-14 12:44:16,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:16,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556316716] [2024-06-14 12:44:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:16,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:17,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:17,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556316716] [2024-06-14 12:44:17,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556316716] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:17,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:17,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161889949] [2024-06-14 12:44:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:17,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:17,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:17,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:17,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:17,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:17,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 229 transitions, 1793 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:17,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:17,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:17,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:18,146 INFO L124 PetriNetUnfolderBase]: 609/1273 cut-off events. [2024-06-14 12:44:18,146 INFO L125 PetriNetUnfolderBase]: For 196513/196513 co-relation queries the response was YES. [2024-06-14 12:44:18,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7513 conditions, 1273 events. 609/1273 cut-off events. For 196513/196513 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7999 event pairs, 152 based on Foata normal form. 6/1269 useless extension candidates. Maximal degree in co-relation 7376. Up to 926 conditions per place. [2024-06-14 12:44:18,163 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 169 selfloop transitions, 69 changer transitions 6/248 dead transitions. [2024-06-14 12:44:18,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 248 transitions, 2645 flow [2024-06-14 12:44:18,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:18,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:18,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 164 transitions. [2024-06-14 12:44:18,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41414141414141414 [2024-06-14 12:44:18,164 INFO L175 Difference]: Start difference. First operand has 333 places, 229 transitions, 1793 flow. Second operand 12 states and 164 transitions. [2024-06-14 12:44:18,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 248 transitions, 2645 flow [2024-06-14 12:44:18,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 248 transitions, 2499 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:18,879 INFO L231 Difference]: Finished difference. Result has 327 places, 227 transitions, 1790 flow [2024-06-14 12:44:18,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1790, PETRI_PLACES=327, PETRI_TRANSITIONS=227} [2024-06-14 12:44:18,879 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 295 predicate places. [2024-06-14 12:44:18,880 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 227 transitions, 1790 flow [2024-06-14 12:44:18,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:18,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:18,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:18,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-14 12:44:18,880 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 12:44:18,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:18,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1801505827, now seen corresponding path program 7 times [2024-06-14 12:44:18,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:18,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440978850] [2024-06-14 12:44:18,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:18,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:20,059 INFO 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 12:44:20,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:20,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440978850] [2024-06-14 12:44:20,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440978850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:20,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:20,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:20,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103427757] [2024-06-14 12:44:20,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:20,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:20,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:20,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:20,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 227 transitions, 1790 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:20,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:20,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:20,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:20,556 INFO L124 PetriNetUnfolderBase]: 585/1221 cut-off events. [2024-06-14 12:44:20,557 INFO L125 PetriNetUnfolderBase]: For 154672/154672 co-relation queries the response was YES. [2024-06-14 12:44:20,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6290 conditions, 1221 events. 585/1221 cut-off events. For 154672/154672 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7642 event pairs, 146 based on Foata normal form. 8/1219 useless extension candidates. Maximal degree in co-relation 6156. Up to 926 conditions per place. [2024-06-14 12:44:20,567 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 160 selfloop transitions, 65 changer transitions 13/242 dead transitions. [2024-06-14 12:44:20,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 242 transitions, 2352 flow [2024-06-14 12:44:20,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:20,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:20,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-14 12:44:20,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2024-06-14 12:44:20,568 INFO L175 Difference]: Start difference. First operand has 327 places, 227 transitions, 1790 flow. Second operand 12 states and 159 transitions. [2024-06-14 12:44:20,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 242 transitions, 2352 flow [2024-06-14 12:44:21,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 242 transitions, 2212 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:21,022 INFO L231 Difference]: Finished difference. Result has 326 places, 222 transitions, 1751 flow [2024-06-14 12:44:21,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1751, PETRI_PLACES=326, PETRI_TRANSITIONS=222} [2024-06-14 12:44:21,022 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 294 predicate places. [2024-06-14 12:44:21,022 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 222 transitions, 1751 flow [2024-06-14 12:44:21,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:21,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:21,022 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 12:44:21,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-14 12:44:21,023 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 12:44:21,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:21,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1235400699, now seen corresponding path program 8 times [2024-06-14 12:44:21,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:21,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943098921] [2024-06-14 12:44:21,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:21,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:22,203 INFO 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 12:44:22,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:22,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943098921] [2024-06-14 12:44:22,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943098921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:22,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:22,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:22,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069229755] [2024-06-14 12:44:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:22,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:22,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:22,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:22,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:22,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 222 transitions, 1751 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:22,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:22,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:22,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:22,793 INFO L124 PetriNetUnfolderBase]: 578/1212 cut-off events. [2024-06-14 12:44:22,793 INFO L125 PetriNetUnfolderBase]: For 151797/151797 co-relation queries the response was YES. [2024-06-14 12:44:22,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6221 conditions, 1212 events. 578/1212 cut-off events. For 151797/151797 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7555 event pairs, 165 based on Foata normal form. 8/1214 useless extension candidates. Maximal degree in co-relation 6088. Up to 968 conditions per place. [2024-06-14 12:44:22,804 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 167 selfloop transitions, 57 changer transitions 9/237 dead transitions. [2024-06-14 12:44:22,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 237 transitions, 2303 flow [2024-06-14 12:44:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-14 12:44:22,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-14 12:44:22,805 INFO L175 Difference]: Start difference. First operand has 326 places, 222 transitions, 1751 flow. Second operand 12 states and 158 transitions. [2024-06-14 12:44:22,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 237 transitions, 2303 flow [2024-06-14 12:44:23,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 237 transitions, 2157 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:23,234 INFO L231 Difference]: Finished difference. Result has 319 places, 219 transitions, 1709 flow [2024-06-14 12:44:23,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1709, PETRI_PLACES=319, PETRI_TRANSITIONS=219} [2024-06-14 12:44:23,235 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 287 predicate places. [2024-06-14 12:44:23,235 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 219 transitions, 1709 flow [2024-06-14 12:44:23,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:23,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:23,235 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 12:44:23,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-14 12:44:23,235 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 12:44:23,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:23,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1235074269, now seen corresponding path program 9 times [2024-06-14 12:44:23,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:23,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199160745] [2024-06-14 12:44:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:23,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:24,247 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 12:44:24,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:24,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199160745] [2024-06-14 12:44:24,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199160745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:24,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:24,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:24,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108880677] [2024-06-14 12:44:24,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:24,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:24,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:24,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:24,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:24,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:24,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 219 transitions, 1709 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:24,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:24,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:24,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:24,754 INFO L124 PetriNetUnfolderBase]: 569/1193 cut-off events. [2024-06-14 12:44:24,754 INFO L125 PetriNetUnfolderBase]: For 130782/130782 co-relation queries the response was YES. [2024-06-14 12:44:24,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6041 conditions, 1193 events. 569/1193 cut-off events. For 130782/130782 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 7456 event pairs, 140 based on Foata normal form. 6/1189 useless extension candidates. Maximal degree in co-relation 5911. Up to 906 conditions per place. [2024-06-14 12:44:24,765 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 142 selfloop transitions, 76 changer transitions 12/234 dead transitions. [2024-06-14 12:44:24,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 234 transitions, 2237 flow [2024-06-14 12:44:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 157 transitions. [2024-06-14 12:44:24,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39646464646464646 [2024-06-14 12:44:24,766 INFO L175 Difference]: Start difference. First operand has 319 places, 219 transitions, 1709 flow. Second operand 12 states and 157 transitions. [2024-06-14 12:44:24,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 234 transitions, 2237 flow [2024-06-14 12:44:25,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 234 transitions, 2119 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:25,143 INFO L231 Difference]: Finished difference. Result has 317 places, 215 transitions, 1721 flow [2024-06-14 12:44:25,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1591, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1721, PETRI_PLACES=317, PETRI_TRANSITIONS=215} [2024-06-14 12:44:25,144 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 285 predicate places. [2024-06-14 12:44:25,144 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 215 transitions, 1721 flow [2024-06-14 12:44:25,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:25,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:25,144 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 12:44:25,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-14 12:44:25,144 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 12:44:25,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:25,145 INFO L85 PathProgramCache]: Analyzing trace with hash -418151389, now seen corresponding path program 10 times [2024-06-14 12:44:25,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:25,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291353315] [2024-06-14 12:44:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:26,212 INFO 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 12:44:26,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:26,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291353315] [2024-06-14 12:44:26,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291353315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:26,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:26,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:26,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771190562] [2024-06-14 12:44:26,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:26,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:26,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:26,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:26,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:26,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:26,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 215 transitions, 1721 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:26,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:26,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:26,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:26,846 INFO L124 PetriNetUnfolderBase]: 565/1188 cut-off events. [2024-06-14 12:44:26,846 INFO L125 PetriNetUnfolderBase]: For 141127/141127 co-relation queries the response was YES. [2024-06-14 12:44:26,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 1188 events. 565/1188 cut-off events. For 141127/141127 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7370 event pairs, 212 based on Foata normal form. 8/1194 useless extension candidates. Maximal degree in co-relation 5929. Up to 1064 conditions per place. [2024-06-14 12:44:26,856 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 202 selfloop transitions, 15 changer transitions 9/230 dead transitions. [2024-06-14 12:44:26,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 230 transitions, 2255 flow [2024-06-14 12:44:26,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:26,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:26,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:44:26,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:44:26,857 INFO L175 Difference]: Start difference. First operand has 317 places, 215 transitions, 1721 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:44:26,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 230 transitions, 2255 flow [2024-06-14 12:44:27,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 230 transitions, 2087 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:27,231 INFO L231 Difference]: Finished difference. Result has 311 places, 212 transitions, 1573 flow [2024-06-14 12:44:27,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1573, PETRI_PLACES=311, PETRI_TRANSITIONS=212} [2024-06-14 12:44:27,232 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 279 predicate places. [2024-06-14 12:44:27,232 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 212 transitions, 1573 flow [2024-06-14 12:44:27,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:27,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:27,232 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 12:44:27,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-14 12:44:27,232 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 12:44:27,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:27,233 INFO L85 PathProgramCache]: Analyzing trace with hash -417824959, now seen corresponding path program 11 times [2024-06-14 12:44:27,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:27,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221756231] [2024-06-14 12:44:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:27,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:28,329 INFO 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 12:44:28,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:28,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221756231] [2024-06-14 12:44:28,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221756231] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:28,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:28,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:28,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799847024] [2024-06-14 12:44:28,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:28,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:28,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:28,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:28,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:28,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 212 transitions, 1573 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:28,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:28,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:28,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:28,832 INFO L124 PetriNetUnfolderBase]: 556/1175 cut-off events. [2024-06-14 12:44:28,832 INFO L125 PetriNetUnfolderBase]: For 121137/121137 co-relation queries the response was YES. [2024-06-14 12:44:28,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5781 conditions, 1175 events. 556/1175 cut-off events. For 121137/121137 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7287 event pairs, 208 based on Foata normal form. 6/1179 useless extension candidates. Maximal degree in co-relation 5655. Up to 1054 conditions per place. [2024-06-14 12:44:28,840 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 199 selfloop transitions, 12 changer transitions 12/227 dead transitions. [2024-06-14 12:44:28,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 227 transitions, 2085 flow [2024-06-14 12:44:28,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 146 transitions. [2024-06-14 12:44:28,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686868686868687 [2024-06-14 12:44:28,841 INFO L175 Difference]: Start difference. First operand has 311 places, 212 transitions, 1573 flow. Second operand 12 states and 146 transitions. [2024-06-14 12:44:28,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 227 transitions, 2085 flow [2024-06-14 12:44:29,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 227 transitions, 2051 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:29,173 INFO L231 Difference]: Finished difference. Result has 309 places, 208 transitions, 1542 flow [2024-06-14 12:44:29,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1539, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1542, PETRI_PLACES=309, PETRI_TRANSITIONS=208} [2024-06-14 12:44:29,174 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 277 predicate places. [2024-06-14 12:44:29,174 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 208 transitions, 1542 flow [2024-06-14 12:44:29,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:29,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:29,174 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 12:44:29,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-14 12:44:29,174 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 12:44:29,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:29,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1603496739, now seen corresponding path program 12 times [2024-06-14 12:44:29,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:29,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78120254] [2024-06-14 12:44:29,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:29,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:29,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:30,159 INFO 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 12:44:30,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:30,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78120254] [2024-06-14 12:44:30,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78120254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:30,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:30,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40117867] [2024-06-14 12:44:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:30,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:30,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:30,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 208 transitions, 1542 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:30,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:30,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:30,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:30,724 INFO L124 PetriNetUnfolderBase]: 570/1201 cut-off events. [2024-06-14 12:44:30,724 INFO L125 PetriNetUnfolderBase]: For 157555/157555 co-relation queries the response was YES. [2024-06-14 12:44:30,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6740 conditions, 1201 events. 570/1201 cut-off events. For 157555/157555 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7439 event pairs, 220 based on Foata normal form. 6/1205 useless extension candidates. Maximal degree in co-relation 6615. Up to 1031 conditions per place. [2024-06-14 12:44:30,740 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 201 selfloop transitions, 16 changer transitions 6/227 dead transitions. [2024-06-14 12:44:30,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 227 transitions, 2310 flow [2024-06-14 12:44:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:44:30,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:44:30,741 INFO L175 Difference]: Start difference. First operand has 309 places, 208 transitions, 1542 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:44:30,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 227 transitions, 2310 flow [2024-06-14 12:44:31,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 227 transitions, 2266 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:31,380 INFO L231 Difference]: Finished difference. Result has 304 places, 206 transitions, 1531 flow [2024-06-14 12:44:31,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1531, PETRI_PLACES=304, PETRI_TRANSITIONS=206} [2024-06-14 12:44:31,380 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 272 predicate places. [2024-06-14 12:44:31,381 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 206 transitions, 1531 flow [2024-06-14 12:44:31,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:31,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:31,381 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 12:44:31,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-14 12:44:31,381 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 12:44:31,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:31,382 INFO L85 PathProgramCache]: Analyzing trace with hash 546043239, now seen corresponding path program 13 times [2024-06-14 12:44:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:31,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222258523] [2024-06-14 12:44:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:31,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:31,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:32,524 INFO 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 12:44:32,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:32,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222258523] [2024-06-14 12:44:32,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222258523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:32,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:32,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:32,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209542689] [2024-06-14 12:44:32,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:32,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:32,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:32,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:32,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:32,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:32,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 206 transitions, 1531 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:32,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:32,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:32,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:33,064 INFO L124 PetriNetUnfolderBase]: 546/1149 cut-off events. [2024-06-14 12:44:33,065 INFO L125 PetriNetUnfolderBase]: For 124241/124241 co-relation queries the response was YES. [2024-06-14 12:44:33,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5656 conditions, 1149 events. 546/1149 cut-off events. For 124241/124241 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7077 event pairs, 212 based on Foata normal form. 8/1155 useless extension candidates. Maximal degree in co-relation 5533. Up to 1031 conditions per place. [2024-06-14 12:44:33,079 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 193 selfloop transitions, 13 changer transitions 11/221 dead transitions. [2024-06-14 12:44:33,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 221 transitions, 2041 flow [2024-06-14 12:44:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-14 12:44:33,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3712121212121212 [2024-06-14 12:44:33,081 INFO L175 Difference]: Start difference. First operand has 304 places, 206 transitions, 1531 flow. Second operand 12 states and 147 transitions. [2024-06-14 12:44:33,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 221 transitions, 2041 flow [2024-06-14 12:44:33,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 221 transitions, 2007 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:33,397 INFO L231 Difference]: Finished difference. Result has 303 places, 202 transitions, 1501 flow [2024-06-14 12:44:33,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1501, PETRI_PLACES=303, PETRI_TRANSITIONS=202} [2024-06-14 12:44:33,397 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 271 predicate places. [2024-06-14 12:44:33,398 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 202 transitions, 1501 flow [2024-06-14 12:44:33,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:33,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:33,398 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 12:44:33,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-14 12:44:33,398 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 12:44:33,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1974394689, now seen corresponding path program 14 times [2024-06-14 12:44:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:33,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631429941] [2024-06-14 12:44:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:34,455 INFO 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 12:44:34,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:34,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631429941] [2024-06-14 12:44:34,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631429941] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:34,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:34,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:34,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364734750] [2024-06-14 12:44:34,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:34,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:34,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:34,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:34,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:34,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:34,587 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 202 transitions, 1501 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:34,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:34,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:34,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:34,944 INFO L124 PetriNetUnfolderBase]: 529/1118 cut-off events. [2024-06-14 12:44:34,945 INFO L125 PetriNetUnfolderBase]: For 101837/101837 co-relation queries the response was YES. [2024-06-14 12:44:34,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5237 conditions, 1118 events. 529/1118 cut-off events. For 101837/101837 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 6813 event pairs, 203 based on Foata normal form. 6/1122 useless extension candidates. Maximal degree in co-relation 5115. Up to 1000 conditions per place. [2024-06-14 12:44:34,955 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 189 selfloop transitions, 10 changer transitions 15/218 dead transitions. [2024-06-14 12:44:34,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 218 transitions, 1995 flow [2024-06-14 12:44:34,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:44:34,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-14 12:44:34,956 INFO L175 Difference]: Start difference. First operand has 303 places, 202 transitions, 1501 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:44:34,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 218 transitions, 1995 flow [2024-06-14 12:44:35,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 218 transitions, 1957 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-14 12:44:35,225 INFO L231 Difference]: Finished difference. Result has 298 places, 197 transitions, 1461 flow [2024-06-14 12:44:35,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1461, PETRI_PLACES=298, PETRI_TRANSITIONS=197} [2024-06-14 12:44:35,225 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 266 predicate places. [2024-06-14 12:44:35,226 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 197 transitions, 1461 flow [2024-06-14 12:44:35,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:35,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:35,226 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 12:44:35,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-14 12:44:35,226 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 12:44:35,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:35,226 INFO L85 PathProgramCache]: Analyzing trace with hash -698363613, now seen corresponding path program 22 times [2024-06-14 12:44:35,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:35,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648559813] [2024-06-14 12:44:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:35,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:36,276 INFO 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 12:44:36,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:36,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648559813] [2024-06-14 12:44:36,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648559813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:36,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:36,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:36,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601403238] [2024-06-14 12:44:36,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:36,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:36,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:36,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:36,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:36,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:36,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 197 transitions, 1461 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:36,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:36,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:36,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:36,740 INFO L124 PetriNetUnfolderBase]: 513/1075 cut-off events. [2024-06-14 12:44:36,740 INFO L125 PetriNetUnfolderBase]: For 82887/82887 co-relation queries the response was YES. [2024-06-14 12:44:36,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5052 conditions, 1075 events. 513/1075 cut-off events. For 82887/82887 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6446 event pairs, 131 based on Foata normal form. 2/1075 useless extension candidates. Maximal degree in co-relation 4932. Up to 972 conditions per place. [2024-06-14 12:44:36,749 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 185 selfloop transitions, 25 changer transitions 0/214 dead transitions. [2024-06-14 12:44:36,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 214 transitions, 1944 flow [2024-06-14 12:44:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:36,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:36,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:44:36,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:44:36,750 INFO L175 Difference]: Start difference. First operand has 298 places, 197 transitions, 1461 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:44:36,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 214 transitions, 1944 flow [2024-06-14 12:44:37,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 214 transitions, 1914 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:37,005 INFO L231 Difference]: Finished difference. Result has 291 places, 198 transitions, 1510 flow [2024-06-14 12:44:37,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1431, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1510, PETRI_PLACES=291, PETRI_TRANSITIONS=198} [2024-06-14 12:44:37,006 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2024-06-14 12:44:37,006 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 198 transitions, 1510 flow [2024-06-14 12:44:37,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:37,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:37,006 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 12:44:37,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-14 12:44:37,006 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 12:44:37,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1916434893, now seen corresponding path program 23 times [2024-06-14 12:44:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:37,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657560279] [2024-06-14 12:44:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:37,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:38,033 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 12:44:38,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:38,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657560279] [2024-06-14 12:44:38,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657560279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:38,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:38,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:38,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517414199] [2024-06-14 12:44:38,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:38,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:38,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:38,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:38,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:38,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:38,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 198 transitions, 1510 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:38,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:38,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:38,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:38,494 INFO L124 PetriNetUnfolderBase]: 517/1083 cut-off events. [2024-06-14 12:44:38,494 INFO L125 PetriNetUnfolderBase]: For 78423/78423 co-relation queries the response was YES. [2024-06-14 12:44:38,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5093 conditions, 1083 events. 517/1083 cut-off events. For 78423/78423 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6499 event pairs, 129 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 4976. Up to 966 conditions per place. [2024-06-14 12:44:38,503 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 186 selfloop transitions, 26 changer transitions 0/216 dead transitions. [2024-06-14 12:44:38,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 216 transitions, 2001 flow [2024-06-14 12:44:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:38,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:38,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:44:38,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-14 12:44:38,504 INFO L175 Difference]: Start difference. First operand has 291 places, 198 transitions, 1510 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:44:38,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 216 transitions, 2001 flow [2024-06-14 12:44:38,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 216 transitions, 1933 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:38,756 INFO L231 Difference]: Finished difference. Result has 293 places, 199 transitions, 1525 flow [2024-06-14 12:44:38,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1525, PETRI_PLACES=293, PETRI_TRANSITIONS=199} [2024-06-14 12:44:38,756 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 261 predicate places. [2024-06-14 12:44:38,756 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 199 transitions, 1525 flow [2024-06-14 12:44:38,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:38,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:38,756 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 12:44:38,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-14 12:44:38,757 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 12:44:38,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1205947525, now seen corresponding path program 15 times [2024-06-14 12:44:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:38,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345854958] [2024-06-14 12:44:38,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:39,804 INFO 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 12:44:39,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345854958] [2024-06-14 12:44:39,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345854958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:39,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:39,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:39,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905160286] [2024-06-14 12:44:39,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:39,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:39,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:39,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:39,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:39,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:39,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 199 transitions, 1525 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:39,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:39,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:39,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:40,349 INFO L124 PetriNetUnfolderBase]: 507/1064 cut-off events. [2024-06-14 12:44:40,349 INFO L125 PetriNetUnfolderBase]: For 71190/71190 co-relation queries the response was YES. [2024-06-14 12:44:40,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 1064 events. 507/1064 cut-off events. For 71190/71190 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6424 event pairs, 125 based on Foata normal form. 8/1069 useless extension candidates. Maximal degree in co-relation 4143. Up to 888 conditions per place. [2024-06-14 12:44:40,363 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 160 selfloop transitions, 41 changer transitions 12/217 dead transitions. [2024-06-14 12:44:40,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 217 transitions, 2001 flow [2024-06-14 12:44:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-14 12:44:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-14 12:44:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 168 transitions. [2024-06-14 12:44:40,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916083916083916 [2024-06-14 12:44:40,364 INFO L175 Difference]: Start difference. First operand has 293 places, 199 transitions, 1525 flow. Second operand 13 states and 168 transitions. [2024-06-14 12:44:40,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 217 transitions, 2001 flow [2024-06-14 12:44:40,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 217 transitions, 1929 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-14 12:44:40,499 INFO L231 Difference]: Finished difference. Result has 297 places, 193 transitions, 1477 flow [2024-06-14 12:44:40,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1477, PETRI_PLACES=297, PETRI_TRANSITIONS=193} [2024-06-14 12:44:40,500 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 265 predicate places. [2024-06-14 12:44:40,500 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 193 transitions, 1477 flow [2024-06-14 12:44:40,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:40,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:40,500 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 12:44:40,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-14 12:44:40,500 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 12:44:40,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:40,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1205507393, now seen corresponding path program 24 times [2024-06-14 12:44:40,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:40,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854362476] [2024-06-14 12:44:40,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:40,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:40,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:41,460 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 12:44:41,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:41,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854362476] [2024-06-14 12:44:41,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854362476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:41,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:41,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:41,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938740160] [2024-06-14 12:44:41,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:41,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:41,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:41,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:41,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:41,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:41,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 193 transitions, 1477 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:41,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:41,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:41,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:41,913 INFO L124 PetriNetUnfolderBase]: 500/1050 cut-off events. [2024-06-14 12:44:41,913 INFO L125 PetriNetUnfolderBase]: For 71925/71925 co-relation queries the response was YES. [2024-06-14 12:44:41,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4194 conditions, 1050 events. 500/1050 cut-off events. For 71925/71925 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6276 event pairs, 141 based on Foata normal form. 8/1056 useless extension candidates. Maximal degree in co-relation 4075. Up to 925 conditions per place. [2024-06-14 12:44:41,921 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 178 selfloop transitions, 23 changer transitions 8/213 dead transitions. [2024-06-14 12:44:41,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 213 transitions, 1976 flow [2024-06-14 12:44:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:41,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:41,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 155 transitions. [2024-06-14 12:44:41,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39141414141414144 [2024-06-14 12:44:41,922 INFO L175 Difference]: Start difference. First operand has 297 places, 193 transitions, 1477 flow. Second operand 12 states and 155 transitions. [2024-06-14 12:44:41,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 213 transitions, 1976 flow [2024-06-14 12:44:42,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 213 transitions, 1860 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-14 12:44:42,062 INFO L231 Difference]: Finished difference. Result has 289 places, 191 transitions, 1406 flow [2024-06-14 12:44:42,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1369, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1406, PETRI_PLACES=289, PETRI_TRANSITIONS=191} [2024-06-14 12:44:42,062 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 257 predicate places. [2024-06-14 12:44:42,062 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 191 transitions, 1406 flow [2024-06-14 12:44:42,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:42,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:42,062 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 12:44:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-14 12:44:42,063 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 12:44:42,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 47279613, now seen corresponding path program 25 times [2024-06-14 12:44:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179658330] [2024-06-14 12:44:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:43,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:43,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179658330] [2024-06-14 12:44:43,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179658330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:43,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:43,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-14 12:44:43,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870124295] [2024-06-14 12:44:43,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:43,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-14 12:44:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:43,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-14 12:44:43,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-14 12:44:43,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:43,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 191 transitions, 1406 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:43,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:43,247 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:43,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:43,550 INFO L124 PetriNetUnfolderBase]: 482/1012 cut-off events. [2024-06-14 12:44:43,550 INFO L125 PetriNetUnfolderBase]: For 34851/34851 co-relation queries the response was YES. [2024-06-14 12:44:43,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 1012 events. 482/1012 cut-off events. For 34851/34851 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6075 event pairs, 129 based on Foata normal form. 2/1012 useless extension candidates. Maximal degree in co-relation 3588. Up to 906 conditions per place. [2024-06-14 12:44:43,559 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 180 selfloop transitions, 25 changer transitions 0/209 dead transitions. [2024-06-14 12:44:43,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 209 transitions, 1860 flow [2024-06-14 12:44:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:43,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:43,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-06-14 12:44:43,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38636363636363635 [2024-06-14 12:44:43,559 INFO L175 Difference]: Start difference. First operand has 289 places, 191 transitions, 1406 flow. Second operand 12 states and 153 transitions. [2024-06-14 12:44:43,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 209 transitions, 1860 flow [2024-06-14 12:44:43,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 209 transitions, 1798 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:43,654 INFO L231 Difference]: Finished difference. Result has 288 places, 191 transitions, 1398 flow [2024-06-14 12:44:43,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1398, PETRI_PLACES=288, PETRI_TRANSITIONS=191} [2024-06-14 12:44:43,655 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 256 predicate places. [2024-06-14 12:44:43,655 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 191 transitions, 1398 flow [2024-06-14 12:44:43,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:43,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:43,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:44:43,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-14 12:44:43,655 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 12:44:43,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:43,656 INFO L85 PathProgramCache]: Analyzing trace with hash 739297833, now seen corresponding path program 1 times [2024-06-14 12:44:43,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:43,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744452607] [2024-06-14 12:44:43,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:43,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:45,077 INFO 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 12:44:45,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:45,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744452607] [2024-06-14 12:44:45,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744452607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:45,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:45,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:45,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698691249] [2024-06-14 12:44:45,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:45,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:45,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:45,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:45,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:45,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:45,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 191 transitions, 1398 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:45,247 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:45,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:45,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:45,692 INFO L124 PetriNetUnfolderBase]: 505/1065 cut-off events. [2024-06-14 12:44:45,692 INFO L125 PetriNetUnfolderBase]: For 76868/76868 co-relation queries the response was YES. [2024-06-14 12:44:45,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4353 conditions, 1065 events. 505/1065 cut-off events. For 76868/76868 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6380 event pairs, 150 based on Foata normal form. 6/1069 useless extension candidates. Maximal degree in co-relation 4240. Up to 819 conditions per place. [2024-06-14 12:44:45,700 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 166 selfloop transitions, 28 changer transitions 15/213 dead transitions. [2024-06-14 12:44:45,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 213 transitions, 2052 flow [2024-06-14 12:44:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:45,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-14 12:44:45,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.398989898989899 [2024-06-14 12:44:45,701 INFO L175 Difference]: Start difference. First operand has 288 places, 191 transitions, 1398 flow. Second operand 12 states and 158 transitions. [2024-06-14 12:44:45,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 213 transitions, 2052 flow [2024-06-14 12:44:45,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 213 transitions, 1923 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:44:45,836 INFO L231 Difference]: Finished difference. Result has 288 places, 184 transitions, 1282 flow [2024-06-14 12:44:45,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1269, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1282, PETRI_PLACES=288, PETRI_TRANSITIONS=184} [2024-06-14 12:44:45,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 256 predicate places. [2024-06-14 12:44:45,836 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 184 transitions, 1282 flow [2024-06-14 12:44:45,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:45,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:45,837 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, 1] [2024-06-14 12:44:45,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-14 12:44:45,837 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 12:44:45,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:45,838 INFO L85 PathProgramCache]: Analyzing trace with hash 910000263, now seen corresponding path program 2 times [2024-06-14 12:44:45,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:45,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732765167] [2024-06-14 12:44:45,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:45,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:45,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:47,325 INFO 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 12:44:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:47,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732765167] [2024-06-14 12:44:47,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732765167] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:47,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:47,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:47,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595561157] [2024-06-14 12:44:47,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:47,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:47,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:47,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:47,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:47,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:47,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 184 transitions, 1282 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:47,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:47,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:47,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:47,950 INFO L124 PetriNetUnfolderBase]: 466/988 cut-off events. [2024-06-14 12:44:47,950 INFO L125 PetriNetUnfolderBase]: For 52640/52640 co-relation queries the response was YES. [2024-06-14 12:44:47,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3466 conditions, 988 events. 466/988 cut-off events. For 52640/52640 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5894 event pairs, 135 based on Foata normal form. 6/992 useless extension candidates. Maximal degree in co-relation 3352. Up to 819 conditions per place. [2024-06-14 12:44:47,957 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 155 selfloop transitions, 24 changer transitions 19/202 dead transitions. [2024-06-14 12:44:47,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 202 transitions, 1720 flow [2024-06-14 12:44:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:47,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:47,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:44:47,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:44:47,958 INFO L175 Difference]: Start difference. First operand has 288 places, 184 transitions, 1282 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:44:47,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 202 transitions, 1720 flow [2024-06-14 12:44:48,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 202 transitions, 1652 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-14 12:44:48,052 INFO L231 Difference]: Finished difference. Result has 280 places, 175 transitions, 1191 flow [2024-06-14 12:44:48,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1191, PETRI_PLACES=280, PETRI_TRANSITIONS=175} [2024-06-14 12:44:48,052 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 248 predicate places. [2024-06-14 12:44:48,053 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 175 transitions, 1191 flow [2024-06-14 12:44:48,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:48,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:48,053 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, 1] [2024-06-14 12:44:48,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-14 12:44:48,053 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 12:44:48,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:48,053 INFO L85 PathProgramCache]: Analyzing trace with hash 832516487, now seen corresponding path program 3 times [2024-06-14 12:44:48,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:48,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16766339] [2024-06-14 12:44:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:48,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:49,356 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 12:44:49,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:49,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16766339] [2024-06-14 12:44:49,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16766339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:49,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:49,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:49,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101119148] [2024-06-14 12:44:49,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:49,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:49,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:49,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:49,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:49,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:49,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 175 transitions, 1191 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:49,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:49,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:49,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:49,831 INFO L124 PetriNetUnfolderBase]: 446/948 cut-off events. [2024-06-14 12:44:49,831 INFO L125 PetriNetUnfolderBase]: For 48224/48224 co-relation queries the response was YES. [2024-06-14 12:44:49,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 948 events. 446/948 cut-off events. For 48224/48224 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5568 event pairs, 133 based on Foata normal form. 6/952 useless extension candidates. Maximal degree in co-relation 3180. Up to 799 conditions per place. [2024-06-14 12:44:49,838 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 152 selfloop transitions, 20 changer transitions 17/193 dead transitions. [2024-06-14 12:44:49,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 193 transitions, 1611 flow [2024-06-14 12:44:49,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:49,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:44:49,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:44:49,839 INFO L175 Difference]: Start difference. First operand has 280 places, 175 transitions, 1191 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:44:49,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 193 transitions, 1611 flow [2024-06-14 12:44:49,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 193 transitions, 1549 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-14 12:44:49,966 INFO L231 Difference]: Finished difference. Result has 269 places, 167 transitions, 1118 flow [2024-06-14 12:44:49,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1118, PETRI_PLACES=269, PETRI_TRANSITIONS=167} [2024-06-14 12:44:49,967 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 237 predicate places. [2024-06-14 12:44:49,967 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 167 transitions, 1118 flow [2024-06-14 12:44:49,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:49,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:49,967 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, 1] [2024-06-14 12:44:49,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-14 12:44:49,968 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 12:44:49,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:49,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2002440859, now seen corresponding path program 4 times [2024-06-14 12:44:49,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:49,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187127168] [2024-06-14 12:44:49,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:49,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:44:51,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:51,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187127168] [2024-06-14 12:44:51,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187127168] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:51,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:51,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:51,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114056938] [2024-06-14 12:44:51,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:51,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:51,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:51,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:51,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:51,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:51,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 167 transitions, 1118 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:51,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:51,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:51,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:51,894 INFO L124 PetriNetUnfolderBase]: 430/912 cut-off events. [2024-06-14 12:44:51,894 INFO L125 PetriNetUnfolderBase]: For 46071/46071 co-relation queries the response was YES. [2024-06-14 12:44:51,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3164 conditions, 912 events. 430/912 cut-off events. For 46071/46071 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5286 event pairs, 125 based on Foata normal form. 6/916 useless extension candidates. Maximal degree in co-relation 3056. Up to 723 conditions per place. [2024-06-14 12:44:51,899 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 147 selfloop transitions, 18 changer transitions 18/187 dead transitions. [2024-06-14 12:44:51,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 187 transitions, 1530 flow [2024-06-14 12:44:51,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:51,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:44:51,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:44:51,900 INFO L175 Difference]: Start difference. First operand has 269 places, 167 transitions, 1118 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:44:51,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 187 transitions, 1530 flow [2024-06-14 12:44:51,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 187 transitions, 1455 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-14 12:44:51,969 INFO L231 Difference]: Finished difference. Result has 260 places, 159 transitions, 1038 flow [2024-06-14 12:44:51,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1038, PETRI_PLACES=260, PETRI_TRANSITIONS=159} [2024-06-14 12:44:51,969 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 228 predicate places. [2024-06-14 12:44:51,969 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 159 transitions, 1038 flow [2024-06-14 12:44:51,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:51,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:51,970 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, 1] [2024-06-14 12:44:51,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-14 12:44:51,970 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 12:44:51,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:51,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1868869053, now seen corresponding path program 5 times [2024-06-14 12:44:51,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:51,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340150223] [2024-06-14 12:44:51,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:51,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:53,356 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 12:44:53,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:53,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340150223] [2024-06-14 12:44:53,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340150223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:53,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:53,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:53,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645788504] [2024-06-14 12:44:53,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:53,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:53,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:53,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 159 transitions, 1038 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:53,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:53,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:53,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:53,990 INFO L124 PetriNetUnfolderBase]: 408/866 cut-off events. [2024-06-14 12:44:53,990 INFO L125 PetriNetUnfolderBase]: For 43828/43828 co-relation queries the response was YES. [2024-06-14 12:44:53,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3008 conditions, 866 events. 408/866 cut-off events. For 43828/43828 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4944 event pairs, 125 based on Foata normal form. 6/870 useless extension candidates. Maximal degree in co-relation 2902. Up to 743 conditions per place. [2024-06-14 12:44:53,996 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 142 selfloop transitions, 16 changer transitions 15/177 dead transitions. [2024-06-14 12:44:53,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 177 transitions, 1426 flow [2024-06-14 12:44:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:53,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:53,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:44:53,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:44:53,997 INFO L175 Difference]: Start difference. First operand has 260 places, 159 transitions, 1038 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:44:53,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 177 transitions, 1426 flow [2024-06-14 12:44:54,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 177 transitions, 1380 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-14 12:44:54,070 INFO L231 Difference]: Finished difference. Result has 251 places, 153 transitions, 991 flow [2024-06-14 12:44:54,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=991, PETRI_PLACES=251, PETRI_TRANSITIONS=153} [2024-06-14 12:44:54,071 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 219 predicate places. [2024-06-14 12:44:54,071 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 153 transitions, 991 flow [2024-06-14 12:44:54,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:54,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:54,071 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, 1] [2024-06-14 12:44:54,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-14 12:44:54,071 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 12:44:54,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -137390167, now seen corresponding path program 6 times [2024-06-14 12:44:54,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:54,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17986905] [2024-06-14 12:44:54,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:55,231 INFO 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 12:44:55,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:55,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17986905] [2024-06-14 12:44:55,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17986905] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:55,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:55,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:55,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845838907] [2024-06-14 12:44:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:55,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:55,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:55,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:55,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 153 transitions, 991 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:55,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:55,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:55,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:55,725 INFO L124 PetriNetUnfolderBase]: 394/840 cut-off events. [2024-06-14 12:44:55,725 INFO L125 PetriNetUnfolderBase]: For 39814/39814 co-relation queries the response was YES. [2024-06-14 12:44:55,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2896 conditions, 840 events. 394/840 cut-off events. For 39814/39814 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4759 event pairs, 121 based on Foata normal form. 6/844 useless extension candidates. Maximal degree in co-relation 2794. Up to 715 conditions per place. [2024-06-14 12:44:55,729 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 136 selfloop transitions, 8 changer transitions 24/172 dead transitions. [2024-06-14 12:44:55,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 172 transitions, 1371 flow [2024-06-14 12:44:55,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:55,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-14 12:44:55,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37373737373737376 [2024-06-14 12:44:55,730 INFO L175 Difference]: Start difference. First operand has 251 places, 153 transitions, 991 flow. Second operand 12 states and 148 transitions. [2024-06-14 12:44:55,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 172 transitions, 1371 flow [2024-06-14 12:44:55,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 172 transitions, 1312 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-14 12:44:55,787 INFO L231 Difference]: Finished difference. Result has 240 places, 142 transitions, 888 flow [2024-06-14 12:44:55,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=888, PETRI_PLACES=240, PETRI_TRANSITIONS=142} [2024-06-14 12:44:55,788 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 208 predicate places. [2024-06-14 12:44:55,788 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 142 transitions, 888 flow [2024-06-14 12:44:55,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:55,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:55,788 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, 1] [2024-06-14 12:44:55,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-14 12:44:55,788 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 12:44:55,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:55,789 INFO L85 PathProgramCache]: Analyzing trace with hash 2101619881, now seen corresponding path program 7 times [2024-06-14 12:44:55,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:55,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868970686] [2024-06-14 12:44:55,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:55,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:57,009 INFO 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 12:44:57,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:57,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868970686] [2024-06-14 12:44:57,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868970686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:57,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:57,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:57,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327869101] [2024-06-14 12:44:57,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:57,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:57,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:57,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:57,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:57,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:57,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 142 transitions, 888 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:57,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:57,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:57,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:57,435 INFO L124 PetriNetUnfolderBase]: 372/790 cut-off events. [2024-06-14 12:44:57,435 INFO L125 PetriNetUnfolderBase]: For 36949/36949 co-relation queries the response was YES. [2024-06-14 12:44:57,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 790 events. 372/790 cut-off events. For 36949/36949 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4372 event pairs, 101 based on Foata normal form. 6/794 useless extension candidates. Maximal degree in co-relation 2604. Up to 600 conditions per place. [2024-06-14 12:44:57,440 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 112 selfloop transitions, 30 changer transitions 16/162 dead transitions. [2024-06-14 12:44:57,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 162 transitions, 1252 flow [2024-06-14 12:44:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-14 12:44:57,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-14 12:44:57,441 INFO L175 Difference]: Start difference. First operand has 240 places, 142 transitions, 888 flow. Second operand 12 states and 154 transitions. [2024-06-14 12:44:57,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 162 transitions, 1252 flow [2024-06-14 12:44:57,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 162 transitions, 1213 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-14 12:44:57,491 INFO L231 Difference]: Finished difference. Result has 224 places, 132 transitions, 858 flow [2024-06-14 12:44:57,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=849, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=858, PETRI_PLACES=224, PETRI_TRANSITIONS=132} [2024-06-14 12:44:57,491 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 192 predicate places. [2024-06-14 12:44:57,491 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 132 transitions, 858 flow [2024-06-14 12:44:57,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:57,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:57,491 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, 1] [2024-06-14 12:44:57,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-14 12:44:57,492 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 12:44:57,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:57,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2101792861, now seen corresponding path program 8 times [2024-06-14 12:44:57,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:57,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083764133] [2024-06-14 12:44:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:44:58,799 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 12:44:58,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:44:58,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083764133] [2024-06-14 12:44:58,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083764133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:44:58,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:44:58,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:44:58,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059155073] [2024-06-14 12:44:58,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:44:58,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:44:58,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:44:58,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:44:58,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:44:58,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:44:58,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 132 transitions, 858 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:58,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:44:58,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:44:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:44:59,252 INFO L124 PetriNetUnfolderBase]: 341/733 cut-off events. [2024-06-14 12:44:59,252 INFO L125 PetriNetUnfolderBase]: For 32370/32370 co-relation queries the response was YES. [2024-06-14 12:44:59,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2551 conditions, 733 events. 341/733 cut-off events. For 32370/32370 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3987 event pairs, 103 based on Foata normal form. 6/737 useless extension candidates. Maximal degree in co-relation 2457. Up to 592 conditions per place. [2024-06-14 12:44:59,257 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 107 selfloop transitions, 24 changer transitions 16/151 dead transitions. [2024-06-14 12:44:59,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 151 transitions, 1198 flow [2024-06-14 12:44:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:44:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:44:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:44:59,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:44:59,258 INFO L175 Difference]: Start difference. First operand has 224 places, 132 transitions, 858 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:44:59,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 151 transitions, 1198 flow [2024-06-14 12:44:59,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 151 transitions, 1120 flow, removed 5 selfloop flow, removed 18 redundant places. [2024-06-14 12:44:59,307 INFO L231 Difference]: Finished difference. Result has 210 places, 124 transitions, 796 flow [2024-06-14 12:44:59,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=796, PETRI_PLACES=210, PETRI_TRANSITIONS=124} [2024-06-14 12:44:59,308 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 178 predicate places. [2024-06-14 12:44:59,308 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 124 transitions, 796 flow [2024-06-14 12:44:59,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:44:59,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:44:59,308 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, 1] [2024-06-14 12:44:59,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-14 12:44:59,309 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 12:44:59,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:44:59,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1426248773, now seen corresponding path program 9 times [2024-06-14 12:44:59,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:44:59,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537560802] [2024-06-14 12:44:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:44:59,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:44:59,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:00,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:00,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:00,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537560802] [2024-06-14 12:45:00,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537560802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:00,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:00,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:00,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473708733] [2024-06-14 12:45:00,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:00,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:00,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:00,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:00,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:00,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:00,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 124 transitions, 796 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:00,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:00,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:01,004 INFO L124 PetriNetUnfolderBase]: 325/701 cut-off events. [2024-06-14 12:45:01,004 INFO L125 PetriNetUnfolderBase]: For 28937/28937 co-relation queries the response was YES. [2024-06-14 12:45:01,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2411 conditions, 701 events. 325/701 cut-off events. For 28937/28937 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3771 event pairs, 92 based on Foata normal form. 6/705 useless extension candidates. Maximal degree in co-relation 2321. Up to 530 conditions per place. [2024-06-14 12:45:01,008 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 99 selfloop transitions, 18 changer transitions 24/145 dead transitions. [2024-06-14 12:45:01,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 145 transitions, 1128 flow [2024-06-14 12:45:01,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:01,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:01,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:45:01,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:45:01,009 INFO L175 Difference]: Start difference. First operand has 210 places, 124 transitions, 796 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:45:01,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 145 transitions, 1128 flow [2024-06-14 12:45:01,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 145 transitions, 1068 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 12:45:01,050 INFO L231 Difference]: Finished difference. Result has 199 places, 111 transitions, 717 flow [2024-06-14 12:45:01,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=717, PETRI_PLACES=199, PETRI_TRANSITIONS=111} [2024-06-14 12:45:01,050 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 167 predicate places. [2024-06-14 12:45:01,051 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 111 transitions, 717 flow [2024-06-14 12:45:01,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:01,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:01,051 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, 1] [2024-06-14 12:45:01,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-14 12:45:01,051 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 12:45:01,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:01,052 INFO L85 PathProgramCache]: Analyzing trace with hash 13078997, now seen corresponding path program 10 times [2024-06-14 12:45:01,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:01,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069884385] [2024-06-14 12:45:01,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:01,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-14 12:45:02,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:02,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069884385] [2024-06-14 12:45:02,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069884385] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:02,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:02,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:02,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474941175] [2024-06-14 12:45:02,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:02,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:02,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:02,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:02,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:02,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:02,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 111 transitions, 717 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:02,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:02,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:02,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:02,865 INFO L124 PetriNetUnfolderBase]: 288/630 cut-off events. [2024-06-14 12:45:02,866 INFO L125 PetriNetUnfolderBase]: For 24944/24944 co-relation queries the response was YES. [2024-06-14 12:45:02,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 630 events. 288/630 cut-off events. For 24944/24944 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3292 event pairs, 85 based on Foata normal form. 6/634 useless extension candidates. Maximal degree in co-relation 2091. Up to 476 conditions per place. [2024-06-14 12:45:02,868 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 92 selfloop transitions, 12 changer transitions 25/133 dead transitions. [2024-06-14 12:45:02,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 133 transitions, 1027 flow [2024-06-14 12:45:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:02,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-14 12:45:02,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3838383838383838 [2024-06-14 12:45:02,869 INFO L175 Difference]: Start difference. First operand has 199 places, 111 transitions, 717 flow. Second operand 12 states and 152 transitions. [2024-06-14 12:45:02,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 133 transitions, 1027 flow [2024-06-14 12:45:02,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 133 transitions, 973 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-14 12:45:02,902 INFO L231 Difference]: Finished difference. Result has 181 places, 99 transitions, 627 flow [2024-06-14 12:45:02,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=627, PETRI_PLACES=181, PETRI_TRANSITIONS=99} [2024-06-14 12:45:02,903 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 149 predicate places. [2024-06-14 12:45:02,903 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 99 transitions, 627 flow [2024-06-14 12:45:02,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:02,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:02,903 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, 1] [2024-06-14 12:45:02,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-14 12:45:02,903 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 12:45:02,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:02,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1046737945, now seen corresponding path program 11 times [2024-06-14 12:45:02,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:02,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740890945] [2024-06-14 12:45:02,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:02,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:04,055 INFO 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 12:45:04,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:04,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740890945] [2024-06-14 12:45:04,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740890945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:04,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:04,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:04,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466639203] [2024-06-14 12:45:04,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:04,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:04,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:04,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:04,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:04,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 99 transitions, 627 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:04,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:04,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:04,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:04,511 INFO L124 PetriNetUnfolderBase]: 255/567 cut-off events. [2024-06-14 12:45:04,511 INFO L125 PetriNetUnfolderBase]: For 19161/19161 co-relation queries the response was YES. [2024-06-14 12:45:04,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1934 conditions, 567 events. 255/567 cut-off events. For 19161/19161 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2860 event pairs, 46 based on Foata normal form. 6/571 useless extension candidates. Maximal degree in co-relation 1857. Up to 311 conditions per place. [2024-06-14 12:45:04,514 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 64 selfloop transitions, 3 changer transitions 51/122 dead transitions. [2024-06-14 12:45:04,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 122 transitions, 917 flow [2024-06-14 12:45:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:04,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-14 12:45:04,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813131313131313 [2024-06-14 12:45:04,515 INFO L175 Difference]: Start difference. First operand has 181 places, 99 transitions, 627 flow. Second operand 12 states and 151 transitions. [2024-06-14 12:45:04,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 122 transitions, 917 flow [2024-06-14 12:45:04,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 122 transitions, 877 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-14 12:45:04,543 INFO L231 Difference]: Finished difference. Result has 165 places, 70 transitions, 425 flow [2024-06-14 12:45:04,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=425, PETRI_PLACES=165, PETRI_TRANSITIONS=70} [2024-06-14 12:45:04,543 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 133 predicate places. [2024-06-14 12:45:04,543 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 70 transitions, 425 flow [2024-06-14 12:45:04,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:04,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:04,544 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, 1] [2024-06-14 12:45:04,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-14 12:45:04,544 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 12:45:04,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:04,544 INFO L85 PathProgramCache]: Analyzing trace with hash -4177015, now seen corresponding path program 12 times [2024-06-14 12:45:04,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:04,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707963891] [2024-06-14 12:45:04,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:05,907 INFO 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 12:45:05,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707963891] [2024-06-14 12:45:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707963891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:05,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:05,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:05,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984538284] [2024-06-14 12:45:05,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:05,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:05,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:05,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:06,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:06,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 70 transitions, 425 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:06,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:06,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:06,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:06,324 INFO L124 PetriNetUnfolderBase]: 162/358 cut-off events. [2024-06-14 12:45:06,325 INFO L125 PetriNetUnfolderBase]: For 14472/14472 co-relation queries the response was YES. [2024-06-14 12:45:06,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1280 conditions, 358 events. 162/358 cut-off events. For 14472/14472 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1553 event pairs, 41 based on Foata normal form. 6/363 useless extension candidates. Maximal degree in co-relation 1210. Up to 236 conditions per place. [2024-06-14 12:45:06,326 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 48 selfloop transitions, 19 changer transitions 13/84 dead transitions. [2024-06-14 12:45:06,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 84 transitions, 615 flow [2024-06-14 12:45:06,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:06,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:06,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-14 12:45:06,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-14 12:45:06,327 INFO L175 Difference]: Start difference. First operand has 165 places, 70 transitions, 425 flow. Second operand 12 states and 143 transitions. [2024-06-14 12:45:06,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 84 transitions, 615 flow [2024-06-14 12:45:06,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 84 transitions, 560 flow, removed 14 selfloop flow, removed 23 redundant places. [2024-06-14 12:45:06,336 INFO L231 Difference]: Finished difference. Result has 120 places, 66 transitions, 391 flow [2024-06-14 12:45:06,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=391, PETRI_PLACES=120, PETRI_TRANSITIONS=66} [2024-06-14 12:45:06,336 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 88 predicate places. [2024-06-14 12:45:06,336 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 66 transitions, 391 flow [2024-06-14 12:45:06,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:06,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:06,336 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, 1] [2024-06-14 12:45:06,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-14 12:45:06,336 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 12:45:06,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash -702200867, now seen corresponding path program 13 times [2024-06-14 12:45:06,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:06,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107891071] [2024-06-14 12:45:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:06,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:07,523 INFO 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 12:45:07,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:07,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107891071] [2024-06-14 12:45:07,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107891071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:07,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:07,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:07,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113057827] [2024-06-14 12:45:07,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:07,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:07,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:07,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:07,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:07,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 66 transitions, 391 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:07,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:07,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:07,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:07,867 INFO L124 PetriNetUnfolderBase]: 151/337 cut-off events. [2024-06-14 12:45:07,867 INFO L125 PetriNetUnfolderBase]: For 8377/8381 co-relation queries the response was YES. [2024-06-14 12:45:07,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 337 events. 151/337 cut-off events. For 8377/8381 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1442 event pairs, 35 based on Foata normal form. 10/346 useless extension candidates. Maximal degree in co-relation 1102. Up to 196 conditions per place. [2024-06-14 12:45:07,868 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 46 selfloop transitions, 18 changer transitions 13/81 dead transitions. [2024-06-14 12:45:07,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 81 transitions, 577 flow [2024-06-14 12:45:07,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-14 12:45:07,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3661616161616162 [2024-06-14 12:45:07,869 INFO L175 Difference]: Start difference. First operand has 120 places, 66 transitions, 391 flow. Second operand 12 states and 145 transitions. [2024-06-14 12:45:07,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 81 transitions, 577 flow [2024-06-14 12:45:07,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 81 transitions, 527 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:07,876 INFO L231 Difference]: Finished difference. Result has 114 places, 61 transitions, 357 flow [2024-06-14 12:45:07,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=357, PETRI_PLACES=114, PETRI_TRANSITIONS=61} [2024-06-14 12:45:07,876 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 82 predicate places. [2024-06-14 12:45:07,877 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 61 transitions, 357 flow [2024-06-14 12:45:07,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:07,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:07,877 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, 1] [2024-06-14 12:45:07,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-14 12:45:07,877 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 12:45:07,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:07,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1712977399, now seen corresponding path program 14 times [2024-06-14 12:45:07,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:07,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282359678] [2024-06-14 12:45:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:07,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:09,169 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 12:45:09,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:09,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282359678] [2024-06-14 12:45:09,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282359678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:09,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:09,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:09,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780443384] [2024-06-14 12:45:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:09,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:09,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:09,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:09,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:09,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:09,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 61 transitions, 357 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:09,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:09,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:09,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:09,538 INFO L124 PetriNetUnfolderBase]: 136/306 cut-off events. [2024-06-14 12:45:09,538 INFO L125 PetriNetUnfolderBase]: For 7442/7446 co-relation queries the response was YES. [2024-06-14 12:45:09,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1058 conditions, 306 events. 136/306 cut-off events. For 7442/7446 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1243 event pairs, 35 based on Foata normal form. 10/315 useless extension candidates. Maximal degree in co-relation 1008. Up to 192 conditions per place. [2024-06-14 12:45:09,539 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 41 selfloop transitions, 15 changer transitions 15/75 dead transitions. [2024-06-14 12:45:09,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 75 transitions, 529 flow [2024-06-14 12:45:09,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-14 12:45:09,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35858585858585856 [2024-06-14 12:45:09,540 INFO L175 Difference]: Start difference. First operand has 114 places, 61 transitions, 357 flow. Second operand 12 states and 142 transitions. [2024-06-14 12:45:09,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 75 transitions, 529 flow [2024-06-14 12:45:09,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 75 transitions, 485 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-14 12:45:09,547 INFO L231 Difference]: Finished difference. Result has 107 places, 55 transitions, 319 flow [2024-06-14 12:45:09,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=319, PETRI_PLACES=107, PETRI_TRANSITIONS=55} [2024-06-14 12:45:09,547 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 75 predicate places. [2024-06-14 12:45:09,547 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 55 transitions, 319 flow [2024-06-14 12:45:09,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:09,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:09,548 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, 1] [2024-06-14 12:45:09,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-14 12:45:09,548 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 12:45:09,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:09,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1006688777, now seen corresponding path program 15 times [2024-06-14 12:45:09,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:09,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364443747] [2024-06-14 12:45:09,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:09,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:10,984 INFO 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 12:45:10,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:10,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364443747] [2024-06-14 12:45:10,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364443747] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:10,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:10,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:10,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547196806] [2024-06-14 12:45:10,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:10,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:10,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:10,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:10,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:11,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:11,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 55 transitions, 319 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:11,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:11,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:11,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:11,489 INFO L124 PetriNetUnfolderBase]: 123/277 cut-off events. [2024-06-14 12:45:11,489 INFO L125 PetriNetUnfolderBase]: For 6218/6222 co-relation queries the response was YES. [2024-06-14 12:45:11,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 277 events. 123/277 cut-off events. For 6218/6222 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1073 event pairs, 33 based on Foata normal form. 10/286 useless extension candidates. Maximal degree in co-relation 908. Up to 174 conditions per place. [2024-06-14 12:45:11,490 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 35 selfloop transitions, 17 changer transitions 13/69 dead transitions. [2024-06-14 12:45:11,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 69 transitions, 479 flow [2024-06-14 12:45:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:11,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:45:11,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 12:45:11,491 INFO L175 Difference]: Start difference. First operand has 107 places, 55 transitions, 319 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:45:11,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 69 transitions, 479 flow [2024-06-14 12:45:11,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 69 transitions, 433 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-14 12:45:11,497 INFO L231 Difference]: Finished difference. Result has 99 places, 51 transitions, 292 flow [2024-06-14 12:45:11,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=292, PETRI_PLACES=99, PETRI_TRANSITIONS=51} [2024-06-14 12:45:11,497 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 67 predicate places. [2024-06-14 12:45:11,497 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 51 transitions, 292 flow [2024-06-14 12:45:11,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:11,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:11,497 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, 1] [2024-06-14 12:45:11,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-14 12:45:11,498 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 12:45:11,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1011752073, now seen corresponding path program 16 times [2024-06-14 12:45:11,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:11,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501416452] [2024-06-14 12:45:11,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:11,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:12,916 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 12:45:12,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:12,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501416452] [2024-06-14 12:45:12,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501416452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:12,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:12,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:12,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266950134] [2024-06-14 12:45:12,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:12,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:12,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:12,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:12,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:13,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:13,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 51 transitions, 292 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:13,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:13,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:13,311 INFO L124 PetriNetUnfolderBase]: 112/256 cut-off events. [2024-06-14 12:45:13,311 INFO L125 PetriNetUnfolderBase]: For 5474/5478 co-relation queries the response was YES. [2024-06-14 12:45:13,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 256 events. 112/256 cut-off events. For 5474/5478 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 950 event pairs, 29 based on Foata normal form. 10/265 useless extension candidates. Maximal degree in co-relation 836. Up to 148 conditions per place. [2024-06-14 12:45:13,313 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 31 selfloop transitions, 15 changer transitions 16/66 dead transitions. [2024-06-14 12:45:13,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 66 transitions, 448 flow [2024-06-14 12:45:13,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:13,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-14 12:45:13,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3560606060606061 [2024-06-14 12:45:13,313 INFO L175 Difference]: Start difference. First operand has 99 places, 51 transitions, 292 flow. Second operand 12 states and 141 transitions. [2024-06-14 12:45:13,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 66 transitions, 448 flow [2024-06-14 12:45:13,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 66 transitions, 406 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:13,318 INFO L231 Difference]: Finished difference. Result has 93 places, 46 transitions, 261 flow [2024-06-14 12:45:13,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=261, PETRI_PLACES=93, PETRI_TRANSITIONS=46} [2024-06-14 12:45:13,318 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 61 predicate places. [2024-06-14 12:45:13,319 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 46 transitions, 261 flow [2024-06-14 12:45:13,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:13,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:13,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:13,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-14 12:45:13,319 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 12:45:13,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:13,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1121979947, now seen corresponding path program 17 times [2024-06-14 12:45:13,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:13,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678065745] [2024-06-14 12:45:13,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:13,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:15,037 INFO 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 12:45:15,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:15,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678065745] [2024-06-14 12:45:15,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678065745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:15,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:15,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:15,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53445056] [2024-06-14 12:45:15,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:15,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:15,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:15,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:15,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:15,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:15,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 46 transitions, 261 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:15,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:15,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:15,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:15,402 INFO L124 PetriNetUnfolderBase]: 97/227 cut-off events. [2024-06-14 12:45:15,403 INFO L125 PetriNetUnfolderBase]: For 4440/4440 co-relation queries the response was YES. [2024-06-14 12:45:15,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 227 events. 97/227 cut-off events. For 4440/4440 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 792 event pairs, 23 based on Foata normal form. 6/232 useless extension candidates. Maximal degree in co-relation 738. Up to 119 conditions per place. [2024-06-14 12:45:15,403 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 27 selfloop transitions, 12 changer transitions 15/58 dead transitions. [2024-06-14 12:45:15,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 58 transitions, 395 flow [2024-06-14 12:45:15,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-14 12:45:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-14 12:45:15,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-14 12:45:15,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3526170798898072 [2024-06-14 12:45:15,404 INFO L175 Difference]: Start difference. First operand has 93 places, 46 transitions, 261 flow. Second operand 11 states and 128 transitions. [2024-06-14 12:45:15,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 58 transitions, 395 flow [2024-06-14 12:45:15,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 58 transitions, 355 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:15,407 INFO L231 Difference]: Finished difference. Result has 84 places, 39 transitions, 216 flow [2024-06-14 12:45:15,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=216, PETRI_PLACES=84, PETRI_TRANSITIONS=39} [2024-06-14 12:45:15,407 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 52 predicate places. [2024-06-14 12:45:15,407 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 39 transitions, 216 flow [2024-06-14 12:45:15,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:15,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:15,408 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, 1] [2024-06-14 12:45:15,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-14 12:45:15,408 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 12:45:15,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:15,409 INFO L85 PathProgramCache]: Analyzing trace with hash 886072005, now seen corresponding path program 18 times [2024-06-14 12:45:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:15,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45699846] [2024-06-14 12:45:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:16,620 INFO 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 12:45:16,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:16,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45699846] [2024-06-14 12:45:16,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45699846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:16,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:16,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:16,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119129707] [2024-06-14 12:45:16,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:16,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:16,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:16,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:16,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:16,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 39 transitions, 216 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:16,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:16,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:16,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:16,966 INFO L124 PetriNetUnfolderBase]: 77/183 cut-off events. [2024-06-14 12:45:16,966 INFO L125 PetriNetUnfolderBase]: For 3258/3266 co-relation queries the response was YES. [2024-06-14 12:45:16,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 183 events. 77/183 cut-off events. For 3258/3266 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 573 event pairs, 21 based on Foata normal form. 14/196 useless extension candidates. Maximal degree in co-relation 598. Up to 96 conditions per place. [2024-06-14 12:45:16,966 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 25 selfloop transitions, 10 changer transitions 14/53 dead transitions. [2024-06-14 12:45:16,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 53 transitions, 344 flow [2024-06-14 12:45:16,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:16,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:16,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-14 12:45:16,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3484848484848485 [2024-06-14 12:45:16,967 INFO L175 Difference]: Start difference. First operand has 84 places, 39 transitions, 216 flow. Second operand 12 states and 138 transitions. [2024-06-14 12:45:16,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 53 transitions, 344 flow [2024-06-14 12:45:16,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 53 transitions, 307 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-14 12:45:16,969 INFO L231 Difference]: Finished difference. Result has 74 places, 34 transitions, 179 flow [2024-06-14 12:45:16,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=179, PETRI_PLACES=74, PETRI_TRANSITIONS=34} [2024-06-14 12:45:16,970 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 42 predicate places. [2024-06-14 12:45:16,970 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 34 transitions, 179 flow [2024-06-14 12:45:16,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:16,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:16,970 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, 1] [2024-06-14 12:45:16,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-14 12:45:16,970 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 12:45:16,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash -602639847, now seen corresponding path program 19 times [2024-06-14 12:45:16,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:16,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028899789] [2024-06-14 12:45:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:18,345 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 12:45:18,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:18,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028899789] [2024-06-14 12:45:18,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028899789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:18,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:18,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:18,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904087900] [2024-06-14 12:45:18,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:18,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:18,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:18,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:18,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 34 transitions, 179 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:18,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:18,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:18,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:18,729 INFO L124 PetriNetUnfolderBase]: 65/157 cut-off events. [2024-06-14 12:45:18,729 INFO L125 PetriNetUnfolderBase]: For 1980/1984 co-relation queries the response was YES. [2024-06-14 12:45:18,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533 conditions, 157 events. 65/157 cut-off events. For 1980/1984 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 448 event pairs, 19 based on Foata normal form. 10/166 useless extension candidates. Maximal degree in co-relation 500. Up to 78 conditions per place. [2024-06-14 12:45:18,730 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 21 selfloop transitions, 10 changer transitions 13/48 dead transitions. [2024-06-14 12:45:18,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 48 transitions, 297 flow [2024-06-14 12:45:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:18,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:18,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-14 12:45:18,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3434343434343434 [2024-06-14 12:45:18,731 INFO L175 Difference]: Start difference. First operand has 74 places, 34 transitions, 179 flow. Second operand 12 states and 136 transitions. [2024-06-14 12:45:18,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 48 transitions, 297 flow [2024-06-14 12:45:18,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 48 transitions, 269 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:18,733 INFO L231 Difference]: Finished difference. Result has 68 places, 30 transitions, 155 flow [2024-06-14 12:45:18,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=155, PETRI_PLACES=68, PETRI_TRANSITIONS=30} [2024-06-14 12:45:18,733 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2024-06-14 12:45:18,733 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 30 transitions, 155 flow [2024-06-14 12:45:18,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:18,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:18,734 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, 1] [2024-06-14 12:45:18,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-14 12:45:18,734 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 12:45:18,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash 218375099, now seen corresponding path program 20 times [2024-06-14 12:45:18,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:18,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128453241] [2024-06-14 12:45:18,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:18,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:19,922 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 12:45:19,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:19,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128453241] [2024-06-14 12:45:19,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128453241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:19,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:19,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:19,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717956010] [2024-06-14 12:45:19,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:19,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:19,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:19,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:19,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:20,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:20,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 30 transitions, 155 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:20,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:20,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:20,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:20,229 INFO L124 PetriNetUnfolderBase]: 54/136 cut-off events. [2024-06-14 12:45:20,229 INFO L125 PetriNetUnfolderBase]: For 1558/1558 co-relation queries the response was YES. [2024-06-14 12:45:20,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 136 events. 54/136 cut-off events. For 1558/1558 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 350 event pairs, 6 based on Foata normal form. 6/141 useless extension candidates. Maximal degree in co-relation 428. Up to 38 conditions per place. [2024-06-14 12:45:20,230 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 19 selfloop transitions, 8 changer transitions 14/45 dead transitions. [2024-06-14 12:45:20,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 45 transitions, 269 flow [2024-06-14 12:45:20,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:20,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-14 12:45:20,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-14 12:45:20,230 INFO L175 Difference]: Start difference. First operand has 68 places, 30 transitions, 155 flow. Second operand 12 states and 135 transitions. [2024-06-14 12:45:20,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 45 transitions, 269 flow [2024-06-14 12:45:20,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 45 transitions, 241 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-14 12:45:20,232 INFO L231 Difference]: Finished difference. Result has 62 places, 24 transitions, 117 flow [2024-06-14 12:45:20,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=117, PETRI_PLACES=62, PETRI_TRANSITIONS=24} [2024-06-14 12:45:20,232 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 30 predicate places. [2024-06-14 12:45:20,232 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 24 transitions, 117 flow [2024-06-14 12:45:20,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:20,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-14 12:45:20,232 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, 1] [2024-06-14 12:45:20,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-14 12:45:20,233 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 12:45:20,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-14 12:45:20,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1528861527, now seen corresponding path program 21 times [2024-06-14 12:45:20,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-14 12:45:20,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263890902] [2024-06-14 12:45:20,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-14 12:45:20,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-14 12:45:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-14 12:45:21,400 INFO 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 12:45:21,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-14 12:45:21,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263890902] [2024-06-14 12:45:21,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263890902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-14 12:45:21,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-14 12:45:21,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-14 12:45:21,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018163106] [2024-06-14 12:45:21,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-14 12:45:21,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-14 12:45:21,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-14 12:45:21,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-14 12:45:21,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-14 12:45:21,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 33 [2024-06-14 12:45:21,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 24 transitions, 117 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:21,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-14 12:45:21,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 33 [2024-06-14 12:45:21,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-14 12:45:21,734 INFO L124 PetriNetUnfolderBase]: 23/67 cut-off events. [2024-06-14 12:45:21,734 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-14 12:45:21,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194 conditions, 67 events. 23/67 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 95 event pairs, 0 based on Foata normal form. 6/72 useless extension candidates. Maximal degree in co-relation 178. Up to 24 conditions per place. [2024-06-14 12:45:21,735 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-06-14 12:45:21,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 33 transitions, 167 flow [2024-06-14 12:45:21,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-14 12:45:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-14 12:45:21,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-14 12:45:21,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3181818181818182 [2024-06-14 12:45:21,736 INFO L175 Difference]: Start difference. First operand has 62 places, 24 transitions, 117 flow. Second operand 12 states and 126 transitions. [2024-06-14 12:45:21,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 33 transitions, 167 flow [2024-06-14 12:45:21,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 33 transitions, 131 flow, removed 1 selfloop flow, removed 18 redundant places. [2024-06-14 12:45:21,736 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-14 12:45:21,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-14 12:45:21,737 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 14 predicate places. [2024-06-14 12:45:21,737 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-14 12:45:21,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-14 12:45:21,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-14 12:45:21,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-14 12:45:21,740 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-14 12:45:21,741 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-14 12:45:21,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-14 12:45:21,741 INFO L445 BasicCegarLoop]: Path program histogram: [26, 25, 21, 15, 12, 9, 7, 7, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-14 12:45:21,744 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-14 12:45:21,744 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-14 12:45:21,747 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-14 12:45:21,747 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-14 12:45:21,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.06 12:45:21 BasicIcfg [2024-06-14 12:45:21,748 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-14 12:45:21,749 INFO L158 Benchmark]: Toolchain (without parser) took 251180.80ms. Allocated memory was 165.7MB in the beginning and 750.8MB in the end (delta: 585.1MB). Free memory was 90.4MB in the beginning and 331.1MB in the end (delta: -240.7MB). Peak memory consumption was 344.6MB. Max. memory is 16.1GB. [2024-06-14 12:45:21,749 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:45:21,749 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-14 12:45:21,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 749.02ms. Allocated memory is still 165.7MB. Free memory was 90.2MB in the beginning and 111.8MB in the end (delta: -21.6MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-06-14 12:45:21,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.73ms. Allocated memory is still 165.7MB. Free memory was 111.8MB in the beginning and 109.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:45:21,750 INFO L158 Benchmark]: Boogie Preprocessor took 54.09ms. Allocated memory is still 165.7MB. Free memory was 109.1MB in the beginning and 106.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-14 12:45:21,750 INFO L158 Benchmark]: RCFGBuilder took 774.72ms. Allocated memory is still 165.7MB. Free memory was 106.3MB in the beginning and 121.6MB in the end (delta: -15.2MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. [2024-06-14 12:45:21,750 INFO L158 Benchmark]: TraceAbstraction took 249544.01ms. Allocated memory was 165.7MB in the beginning and 750.8MB in the end (delta: 585.1MB). Free memory was 120.6MB in the beginning and 331.1MB in the end (delta: -210.5MB). Peak memory consumption was 374.5MB. Max. memory is 16.1GB. [2024-06-14 12:45:21,751 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.18ms. Allocated memory is still 104.9MB. Free memory is still 71.1MB. There was no memory consumed. Max. memory is 16.1GB. * CDTParser took 0.18ms. Allocated memory is still 165.7MB. Free memory is still 137.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 749.02ms. Allocated memory is still 165.7MB. Free memory was 90.2MB in the beginning and 111.8MB in the end (delta: -21.6MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.73ms. Allocated memory is still 165.7MB. Free memory was 111.8MB in the beginning and 109.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.09ms. Allocated memory is still 165.7MB. Free memory was 109.1MB in the beginning and 106.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 774.72ms. Allocated memory is still 165.7MB. Free memory was 106.3MB in the beginning and 121.6MB in the end (delta: -15.2MB). Peak memory consumption was 42.3MB. Max. memory is 16.1GB. * TraceAbstraction took 249544.01ms. Allocated memory was 165.7MB in the beginning and 750.8MB in the end (delta: 585.1MB). Free memory was 120.6MB in the beginning and 331.1MB in the end (delta: -210.5MB). Peak memory consumption was 374.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 53 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: 249.4s, OverallIterations: 156, TraceHistogramMax: 1, PathProgramHistogramMax: 26, EmptinessCheckTime: 0.0s, AutomataDifference: 88.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10530 SdHoareTripleChecker+Valid, 38.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8873 mSDsluCounter, 5796 SdHoareTripleChecker+Invalid, 33.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5249 mSDsCounter, 1884 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 64630 IncrementalHoareTripleChecker+Invalid, 66514 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1884 mSolverCounterUnsat, 547 mSDtfsCounter, 64630 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1775 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1775 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 57.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2090occurred in iteration=87, InterpolantAutomatonStates: 1600, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 158.7s InterpolantComputationTime, 2866 NumberOfCodeBlocks, 2866 NumberOfCodeBlocksAsserted, 156 NumberOfCheckSat, 2710 ConstructedInterpolants, 0 QuantifiedInterpolants, 125895 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 156 InterpolantComputations, 156 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 12:45:21,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE