./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-05-07_14-17-48.files/protection/mix016_pso.opt_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b44c8288 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/mix016_pso.opt_tso.opt.i ./goblint.2024-05-07_14-17-48.files/protection/mix016_pso.opt_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-wip.fs.witness-ghost-b44c828-m [2024-05-12 13:10:43,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-05-12 13:10:43,111 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-05-12 13:10:43,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-05-12 13:10:43,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-05-12 13:10:43,145 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-05-12 13:10:43,146 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-05-12 13:10:43,146 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-05-12 13:10:43,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-05-12 13:10:43,150 INFO L153 SettingsManager]: * Use memory slicer=true [2024-05-12 13:10:43,151 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-05-12 13:10:43,151 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-05-12 13:10:43,152 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-05-12 13:10:43,153 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-05-12 13:10:43,153 INFO L153 SettingsManager]: * Use SBE=true [2024-05-12 13:10:43,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-05-12 13:10:43,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-05-12 13:10:43,154 INFO L153 SettingsManager]: * sizeof long=4 [2024-05-12 13:10:43,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-05-12 13:10:43,154 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-05-12 13:10:43,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-05-12 13:10:43,155 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-05-12 13:10:43,155 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-05-12 13:10:43,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-05-12 13:10:43,156 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-05-12 13:10:43,156 INFO L153 SettingsManager]: * sizeof long double=12 [2024-05-12 13:10:43,156 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-05-12 13:10:43,157 INFO L153 SettingsManager]: * Use constant arrays=true [2024-05-12 13:10:43,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-05-12 13:10:43,157 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-05-12 13:10:43,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-05-12 13:10:43,159 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-05-12 13:10:43,159 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:10:43,159 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-05-12 13:10:43,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-05-12 13:10:43,160 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-05-12 13:10:43,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-05-12 13:10:43,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-05-12 13:10:43,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-05-12 13:10:43,161 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-05-12 13:10:43,161 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-05-12 13:10:43,164 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-05-12 13:10:43,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-05-12 13:10:43,164 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-05-12 13:10:43,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-05-12 13:10:43,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-05-12 13:10:43,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-05-12 13:10:43,438 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-05-12 13:10:43,439 INFO L274 PluginConnector]: Witness Parser initialized [2024-05-12 13:10:43,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-05-07_14-17-48.files/protection/mix016_pso.opt_tso.opt.yml/witness.yml [2024-05-12 13:10:43,656 INFO L270 PluginConnector]: Initializing CDTParser... [2024-05-12 13:10:43,656 INFO L274 PluginConnector]: CDTParser initialized [2024-05-12 13:10:43,657 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i [2024-05-12 13:10:44,801 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-05-12 13:10:45,098 INFO L384 CDTParser]: Found 1 translation units. [2024-05-12 13:10:45,098 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i [2024-05-12 13:10:45,139 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e84876f4/78c37dc794bc481980c46d474ea8b2aa/FLAGb0e5f4414 [2024-05-12 13:10:45,154 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e84876f4/78c37dc794bc481980c46d474ea8b2aa [2024-05-12 13:10:45,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-05-12 13:10:45,156 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-05-12 13:10:45,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-05-12 13:10:45,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-05-12 13:10:45,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-05-12 13:10:45,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:10:43" (1/2) ... [2024-05-12 13:10:45,166 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242bddd9 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:10:45, skipping insertion in model container [2024-05-12 13:10:45,166 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:10:43" (1/2) ... [2024-05-12 13:10:45,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@747d533c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 12.05 01:10:45, skipping insertion in model container [2024-05-12 13:10:45,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:10:45" (2/2) ... [2024-05-12 13:10:45,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242bddd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45, skipping insertion in model container [2024-05-12 13:10:45,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.05 01:10:45" (2/2) ... [2024-05-12 13:10:45,169 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-05-12 13:10:45,279 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-05-12 13:10:45,280 INFO L97 edCorrectnessWitness]: Location invariant before [L848-L848] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-05-12 13:10:45,280 INFO L97 edCorrectnessWitness]: Location invariant before [L846-L846] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-05-12 13:10:45,281 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] (((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || ((0 <= y && y <= 1) && (y == 0 || y == 1)))) && (! multithreaded || ((0 <= z && z <= 1) && (z == 0 || z == 1)))) && (! multithreaded || ((0 <= x && x <= 1) && (x == 0 || x == 1)))) && (! multithreaded || ((0 <= y$w_buff1 && y$w_buff1 <= 1) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || ((0 <= __unbuffered_p2_EBX && __unbuffered_p2_EBX <= 1) && (__unbuffered_p2_EBX == 0 || __unbuffered_p2_EBX == 1)))) && (! multithreaded || ((0 <= y$w_buff0 && y$w_buff0 <= 1) && (y$w_buff0 == 0 || y$w_buff0 == 1)))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p2_EAX && __unbuffered_p2_EAX <= 1) && (__unbuffered_p2_EAX == 0 || __unbuffered_p2_EAX == 1)))) && (! multithreaded || ((0 <= y$mem_tmp && y$mem_tmp <= 1) && (y$mem_tmp == 0 || y$mem_tmp == 1)))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p0_EAX && __unbuffered_p0_EAX <= 1) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((0 <= __unbuffered_p1_EAX && __unbuffered_p1_EAX <= 1) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) [2024-05-12 13:10:45,281 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-05-12 13:10:45,281 INFO L106 edCorrectnessWitness]: ghost_update [L844-L844] multithreaded = 1; [2024-05-12 13:10:45,328 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-05-12 13:10:45,493 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i[956,969] [2024-05-12 13:10:45,717 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:10:45,727 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-05-12 13:10:45,769 WARN L246 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix016_pso.opt_tso.opt.i[956,969] Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-05-12 13:10:45,891 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-05-12 13:10:45,942 INFO L206 MainTranslator]: Completed translation [2024-05-12 13:10:45,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45 WrapperNode [2024-05-12 13:10:45,943 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-05-12 13:10:45,944 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-05-12 13:10:45,944 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-05-12 13:10:45,944 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-05-12 13:10:45,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:45,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,021 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 155 [2024-05-12 13:10:46,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-05-12 13:10:46,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-05-12 13:10:46,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-05-12 13:10:46,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-05-12 13:10:46,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,039 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,054 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-05-12 13:10:46,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,071 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,080 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-05-12 13:10:46,094 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-05-12 13:10:46,094 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-05-12 13:10:46,094 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-05-12 13:10:46,095 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (1/1) ... [2024-05-12 13:10:46,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-05-12 13:10:46,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-05-12 13:10:46,125 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) [2024-05-12 13:10:46,154 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 [2024-05-12 13:10:46,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-05-12 13:10:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-05-12 13:10:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-05-12 13:10:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-05-12 13:10:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-05-12 13:10:46,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-05-12 13:10:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-05-12 13:10:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-05-12 13:10:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-05-12 13:10:46,170 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-05-12 13:10:46,170 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-05-12 13:10:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-05-12 13:10:46,171 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-05-12 13:10:46,171 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-05-12 13:10:46,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-05-12 13:10:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-05-12 13:10:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-05-12 13:10:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-05-12 13:10:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-05-12 13:10:46,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-05-12 13:10:46,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-05-12 13:10:46,176 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-05-12 13:10:46,344 INFO L244 CfgBuilder]: Building ICFG [2024-05-12 13:10:46,346 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-05-12 13:10:46,697 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-05-12 13:10:46,702 INFO L293 CfgBuilder]: Performing block encoding [2024-05-12 13:10:46,894 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-05-12 13:10:46,894 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-05-12 13:10:46,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:10:46 BoogieIcfgContainer [2024-05-12 13:10:46,895 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-05-12 13:10:46,897 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-05-12 13:10:46,897 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-05-12 13:10:46,900 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-05-12 13:10:46,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 12.05 01:10:43" (1/4) ... [2024-05-12 13:10:46,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b734ec4 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 12.05 01:10:46, skipping insertion in model container [2024-05-12 13:10:46,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.05 01:10:45" (2/4) ... [2024-05-12 13:10:46,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b734ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:10:46, skipping insertion in model container [2024-05-12 13:10:46,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.05 01:10:45" (3/4) ... [2024-05-12 13:10:46,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b734ec4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.05 01:10:46, skipping insertion in model container [2024-05-12 13:10:46,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.05 01:10:46" (4/4) ... [2024-05-12 13:10:46,904 INFO L112 eAbstractionObserver]: Analyzing ICFG mix016_pso.opt_tso.opt.i [2024-05-12 13:10:46,919 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-05-12 13:10:46,920 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-05-12 13:10:46,920 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-05-12 13:10:46,968 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-05-12 13:10:47,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 48 transitions, 108 flow [2024-05-12 13:10:47,039 INFO L124 PetriNetUnfolderBase]: 1/45 cut-off events. [2024-05-12 13:10:47,039 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:10:47,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 45 events. 1/45 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-05-12 13:10:47,043 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 48 transitions, 108 flow [2024-05-12 13:10:47,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 45 transitions, 99 flow [2024-05-12 13:10:47,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-05-12 13:10:47,067 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;@65c93bee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-05-12 13:10:47,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-05-12 13:10:47,071 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-05-12 13:10:47,072 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-05-12 13:10:47,072 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-05-12 13:10:47,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:47,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-05-12 13:10:47,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:10:47,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:47,079 INFO L85 PathProgramCache]: Analyzing trace with hash -965811045, now seen corresponding path program 1 times [2024-05-12 13:10:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:47,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050090018] [2024-05-12 13:10:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:47,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:48,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050090018] [2024-05-12 13:10:48,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050090018] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:48,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:10:48,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832574829] [2024-05-12 13:10:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:48,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:10:48,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:10:48,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:10:48,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 48 [2024-05-12 13:10:48,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:48,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:48,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 48 [2024-05-12 13:10:48,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:49,054 INFO L124 PetriNetUnfolderBase]: 2349/3983 cut-off events. [2024-05-12 13:10:49,055 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2024-05-12 13:10:49,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 3983 events. 2349/3983 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 25908 event pairs, 1832 based on Foata normal form. 121/3760 useless extension candidates. Maximal degree in co-relation 7448. Up to 3411 conditions per place. [2024-05-12 13:10:49,083 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 41 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2024-05-12 13:10:49,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 225 flow [2024-05-12 13:10:49,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:10:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:10:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-05-12 13:10:49,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2024-05-12 13:10:49,098 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 99 flow. Second operand 3 states and 99 transitions. [2024-05-12 13:10:49,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 225 flow [2024-05-12 13:10:49,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 59 transitions, 220 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-05-12 13:10:49,106 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 131 flow [2024-05-12 13:10:49,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-05-12 13:10:49,112 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 0 predicate places. [2024-05-12 13:10:49,112 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 131 flow [2024-05-12 13:10:49,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:49,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:49,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:49,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-05-12 13:10:49,113 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:10:49,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:49,115 INFO L85 PathProgramCache]: Analyzing trace with hash -431444166, now seen corresponding path program 1 times [2024-05-12 13:10:49,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:49,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68401836] [2024-05-12 13:10:49,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:49,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:49,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:49,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68401836] [2024-05-12 13:10:49,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68401836] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:49,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:49,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-05-12 13:10:49,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86202758] [2024-05-12 13:10:49,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:49,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-05-12 13:10:49,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:49,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-05-12 13:10:49,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-05-12 13:10:49,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-05-12 13:10:49,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 131 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:49,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:49,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-05-12 13:10:49,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:50,529 INFO L124 PetriNetUnfolderBase]: 2679/4310 cut-off events. [2024-05-12 13:10:50,529 INFO L125 PetriNetUnfolderBase]: For 639/639 co-relation queries the response was YES. [2024-05-12 13:10:50,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9281 conditions, 4310 events. 2679/4310 cut-off events. For 639/639 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 26518 event pairs, 1372 based on Foata normal form. 3/4047 useless extension candidates. Maximal degree in co-relation 9266. Up to 3855 conditions per place. [2024-05-12 13:10:50,555 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 53 selfloop transitions, 9 changer transitions 0/74 dead transitions. [2024-05-12 13:10:50,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 74 transitions, 321 flow [2024-05-12 13:10:50,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-05-12 13:10:50,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-05-12 13:10:50,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2024-05-12 13:10:50,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6510416666666666 [2024-05-12 13:10:50,566 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 131 flow. Second operand 4 states and 125 transitions. [2024-05-12 13:10:50,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 74 transitions, 321 flow [2024-05-12 13:10:50,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-05-12 13:10:50,570 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 177 flow [2024-05-12 13:10:50,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-05-12 13:10:50,577 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2024-05-12 13:10:50,577 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 177 flow [2024-05-12 13:10:50,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:50,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:50,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:50,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-05-12 13:10:50,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:10:50,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:50,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1685088749, now seen corresponding path program 1 times [2024-05-12 13:10:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:50,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435151881] [2024-05-12 13:10:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:50,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:50,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:51,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:51,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435151881] [2024-05-12 13:10:51,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435151881] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:51,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:51,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:10:51,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39719590] [2024-05-12 13:10:51,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:51,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:10:51,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:51,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:10:51,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:10:51,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:10:51,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 177 flow. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:51,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:51,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:10:51,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:52,500 INFO L124 PetriNetUnfolderBase]: 3410/5649 cut-off events. [2024-05-12 13:10:52,501 INFO L125 PetriNetUnfolderBase]: For 2221/2221 co-relation queries the response was YES. [2024-05-12 13:10:52,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12994 conditions, 5649 events. 3410/5649 cut-off events. For 2221/2221 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 36761 event pairs, 1650 based on Foata normal form. 6/5278 useless extension candidates. Maximal degree in co-relation 12977. Up to 4812 conditions per place. [2024-05-12 13:10:52,541 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 73 selfloop transitions, 16 changer transitions 0/100 dead transitions. [2024-05-12 13:10:52,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 488 flow [2024-05-12 13:10:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:10:52,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:10:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 176 transitions. [2024-05-12 13:10:52,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-05-12 13:10:52,547 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 177 flow. Second operand 6 states and 176 transitions. [2024-05-12 13:10:52,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 488 flow [2024-05-12 13:10:52,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 100 transitions, 460 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-05-12 13:10:52,553 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 237 flow [2024-05-12 13:10:52,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=237, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-05-12 13:10:52,554 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-05-12 13:10:52,554 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 237 flow [2024-05-12 13:10:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:52,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:52,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:52,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-05-12 13:10:52,555 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:10:52,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1075645688, now seen corresponding path program 1 times [2024-05-12 13:10:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:52,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581896344] [2024-05-12 13:10:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:52,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:52,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:53,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:53,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581896344] [2024-05-12 13:10:53,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581896344] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:53,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:53,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:10:53,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101734468] [2024-05-12 13:10:53,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:53,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:10:53,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:53,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:10:53,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:10:53,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:10:53,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-05-12 13:10:53,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:53,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:10:53,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:54,295 INFO L124 PetriNetUnfolderBase]: 3398/5166 cut-off events. [2024-05-12 13:10:54,295 INFO L125 PetriNetUnfolderBase]: For 3568/3568 co-relation queries the response was YES. [2024-05-12 13:10:54,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13676 conditions, 5166 events. 3398/5166 cut-off events. For 3568/3568 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 29608 event pairs, 1074 based on Foata normal form. 4/4966 useless extension candidates. Maximal degree in co-relation 13657. Up to 4849 conditions per place. [2024-05-12 13:10:54,338 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 63 selfloop transitions, 10 changer transitions 0/84 dead transitions. [2024-05-12 13:10:54,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 84 transitions, 455 flow [2024-05-12 13:10:54,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:10:54,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:10:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-05-12 13:10:54,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5583333333333333 [2024-05-12 13:10:54,340 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 237 flow. Second operand 5 states and 134 transitions. [2024-05-12 13:10:54,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 84 transitions, 455 flow [2024-05-12 13:10:54,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 84 transitions, 417 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-05-12 13:10:54,349 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 258 flow [2024-05-12 13:10:54,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-05-12 13:10:54,351 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 9 predicate places. [2024-05-12 13:10:54,351 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 258 flow [2024-05-12 13:10:54,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 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) [2024-05-12 13:10:54,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:54,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:54,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-05-12 13:10:54,352 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:10:54,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:54,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1054507330, now seen corresponding path program 1 times [2024-05-12 13:10:54,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:54,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121515800] [2024-05-12 13:10:54,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:54,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:54,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121515800] [2024-05-12 13:10:54,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121515800] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:54,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:54,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-05-12 13:10:54,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342783446] [2024-05-12 13:10:54,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:54,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-05-12 13:10:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-05-12 13:10:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-05-12 13:10:54,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 48 [2024-05-12 13:10:54,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 62 transitions, 258 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:54,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:54,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 48 [2024-05-12 13:10:54,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:54,748 INFO L124 PetriNetUnfolderBase]: 1103/2214 cut-off events. [2024-05-12 13:10:54,751 INFO L125 PetriNetUnfolderBase]: For 1691/1748 co-relation queries the response was YES. [2024-05-12 13:10:54,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5031 conditions, 2214 events. 1103/2214 cut-off events. For 1691/1748 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 16037 event pairs, 209 based on Foata normal form. 2/2046 useless extension candidates. Maximal degree in co-relation 5010. Up to 1407 conditions per place. [2024-05-12 13:10:54,767 INFO L140 encePairwiseOnDemand]: 45/48 looper letters, 28 selfloop transitions, 7 changer transitions 0/64 dead transitions. [2024-05-12 13:10:54,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 64 transitions, 304 flow [2024-05-12 13:10:54,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-05-12 13:10:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-05-12 13:10:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2024-05-12 13:10:54,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7152777777777778 [2024-05-12 13:10:54,770 INFO L175 Difference]: Start difference. First operand has 63 places, 62 transitions, 258 flow. Second operand 3 states and 103 transitions. [2024-05-12 13:10:54,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 64 transitions, 304 flow [2024-05-12 13:10:54,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 284 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-05-12 13:10:54,774 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 212 flow [2024-05-12 13:10:54,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-05-12 13:10:54,776 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 7 predicate places. [2024-05-12 13:10:54,777 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 212 flow [2024-05-12 13:10:54,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:54,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:54,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:54,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-05-12 13:10:54,778 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:10:54,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1357563665, now seen corresponding path program 1 times [2024-05-12 13:10:54,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:54,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746446577] [2024-05-12 13:10:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:54,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:55,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:55,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746446577] [2024-05-12 13:10:55,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746446577] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:55,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:55,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:10:55,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187781967] [2024-05-12 13:10:55,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:55,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:10:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:10:55,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:10:55,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:10:55,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 212 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:55,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:55,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:10:55,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:56,875 INFO L124 PetriNetUnfolderBase]: 3457/5057 cut-off events. [2024-05-12 13:10:56,876 INFO L125 PetriNetUnfolderBase]: For 6293/6293 co-relation queries the response was YES. [2024-05-12 13:10:56,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14073 conditions, 5057 events. 3457/5057 cut-off events. For 6293/6293 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 27259 event pairs, 997 based on Foata normal form. 4/5052 useless extension candidates. Maximal degree in co-relation 14053. Up to 4811 conditions per place. [2024-05-12 13:10:56,908 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 70 selfloop transitions, 16 changer transitions 4/100 dead transitions. [2024-05-12 13:10:56,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 100 transitions, 534 flow [2024-05-12 13:10:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:10:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:10:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 161 transitions. [2024-05-12 13:10:56,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5590277777777778 [2024-05-12 13:10:56,911 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 212 flow. Second operand 6 states and 161 transitions. [2024-05-12 13:10:56,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 100 transitions, 534 flow [2024-05-12 13:10:56,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 100 transitions, 516 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-05-12 13:10:56,918 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 278 flow [2024-05-12 13:10:56,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-05-12 13:10:56,920 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2024-05-12 13:10:56,920 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 278 flow [2024-05-12 13:10:56,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:56,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:56,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:56,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-05-12 13:10:56,921 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:10:56,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1351169915, now seen corresponding path program 2 times [2024-05-12 13:10:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:56,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439020950] [2024-05-12 13:10:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:56,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:10:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:10:57,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:10:57,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439020950] [2024-05-12 13:10:57,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439020950] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:10:57,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:10:57,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:10:57,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808775591] [2024-05-12 13:10:57,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:10:57,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:10:57,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:10:57,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:10:57,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:10:57,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:10:57,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:57,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:10:57,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:10:57,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:10:58,960 INFO L124 PetriNetUnfolderBase]: 3011/4426 cut-off events. [2024-05-12 13:10:58,961 INFO L125 PetriNetUnfolderBase]: For 7251/7257 co-relation queries the response was YES. [2024-05-12 13:10:58,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13187 conditions, 4426 events. 3011/4426 cut-off events. For 7251/7257 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 23597 event pairs, 890 based on Foata normal form. 8/4427 useless extension candidates. Maximal degree in co-relation 13165. Up to 4206 conditions per place. [2024-05-12 13:10:58,994 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 64 selfloop transitions, 16 changer transitions 0/90 dead transitions. [2024-05-12 13:10:58,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 90 transitions, 504 flow [2024-05-12 13:10:58,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:10:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:10:58,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 151 transitions. [2024-05-12 13:10:58,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243055555555556 [2024-05-12 13:10:58,997 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 278 flow. Second operand 6 states and 151 transitions. [2024-05-12 13:10:58,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 90 transitions, 504 flow [2024-05-12 13:10:59,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 90 transitions, 474 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-05-12 13:10:59,009 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 288 flow [2024-05-12 13:10:59,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-05-12 13:10:59,011 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2024-05-12 13:10:59,011 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 288 flow [2024-05-12 13:10:59,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:10:59,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:10:59,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:10:59,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-05-12 13:10:59,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:10:59,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:10:59,013 INFO L85 PathProgramCache]: Analyzing trace with hash 975729205, now seen corresponding path program 1 times [2024-05-12 13:10:59,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:10:59,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237652787] [2024-05-12 13:10:59,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:10:59,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:10:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:00,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:00,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:00,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237652787] [2024-05-12 13:11:00,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237652787] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:00,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:00,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:00,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384876418] [2024-05-12 13:11:00,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:00,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:00,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:00,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:00,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 288 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:00,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:00,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:00,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:01,130 INFO L124 PetriNetUnfolderBase]: 3129/4619 cut-off events. [2024-05-12 13:11:01,130 INFO L125 PetriNetUnfolderBase]: For 8138/8140 co-relation queries the response was YES. [2024-05-12 13:11:01,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13858 conditions, 4619 events. 3129/4619 cut-off events. For 8138/8140 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 24738 event pairs, 972 based on Foata normal form. 6/4618 useless extension candidates. Maximal degree in co-relation 13834. Up to 4389 conditions per place. [2024-05-12 13:11:01,165 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 87 selfloop transitions, 25 changer transitions 0/122 dead transitions. [2024-05-12 13:11:01,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 122 transitions, 706 flow [2024-05-12 13:11:01,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:01,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 203 transitions. [2024-05-12 13:11:01,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5286458333333334 [2024-05-12 13:11:01,167 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 288 flow. Second operand 8 states and 203 transitions. [2024-05-12 13:11:01,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 122 transitions, 706 flow [2024-05-12 13:11:01,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 122 transitions, 650 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-05-12 13:11:01,179 INFO L231 Difference]: Finished difference. Result has 72 places, 76 transitions, 406 flow [2024-05-12 13:11:01,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=406, PETRI_PLACES=72, PETRI_TRANSITIONS=76} [2024-05-12 13:11:01,181 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 18 predicate places. [2024-05-12 13:11:01,181 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 76 transitions, 406 flow [2024-05-12 13:11:01,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:01,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:01,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:01,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-05-12 13:11:01,182 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:01,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1527958667, now seen corresponding path program 2 times [2024-05-12 13:11:01,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:01,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343321721] [2024-05-12 13:11:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:01,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:02,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:02,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343321721] [2024-05-12 13:11:02,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343321721] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:02,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:02,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285584617] [2024-05-12 13:11:02,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:02,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:02,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:02,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:02,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 76 transitions, 406 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:02,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:02,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:02,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:03,337 INFO L124 PetriNetUnfolderBase]: 3175/4706 cut-off events. [2024-05-12 13:11:03,337 INFO L125 PetriNetUnfolderBase]: For 11302/11306 co-relation queries the response was YES. [2024-05-12 13:11:03,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15218 conditions, 4706 events. 3175/4706 cut-off events. For 11302/11306 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 25500 event pairs, 957 based on Foata normal form. 8/4708 useless extension candidates. Maximal degree in co-relation 15192. Up to 4410 conditions per place. [2024-05-12 13:11:03,375 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 86 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-05-12 13:11:03,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 122 transitions, 788 flow [2024-05-12 13:11:03,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:03,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:11:03,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-05-12 13:11:03,377 INFO L175 Difference]: Start difference. First operand has 72 places, 76 transitions, 406 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:11:03,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 122 transitions, 788 flow [2024-05-12 13:11:03,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 122 transitions, 748 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:03,389 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 465 flow [2024-05-12 13:11:03,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=465, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2024-05-12 13:11:03,391 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 22 predicate places. [2024-05-12 13:11:03,391 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 465 flow [2024-05-12 13:11:03,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:03,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:03,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:03,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-05-12 13:11:03,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:03,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash -195137557, now seen corresponding path program 3 times [2024-05-12 13:11:03,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:03,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547983871] [2024-05-12 13:11:03,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:03,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:04,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547983871] [2024-05-12 13:11:04,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547983871] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:04,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:04,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297779128] [2024-05-12 13:11:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:04,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:04,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:04,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:04,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:04,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 465 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:04,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:04,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:04,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:05,523 INFO L124 PetriNetUnfolderBase]: 3221/4792 cut-off events. [2024-05-12 13:11:05,523 INFO L125 PetriNetUnfolderBase]: For 15271/15273 co-relation queries the response was YES. [2024-05-12 13:11:05,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16406 conditions, 4792 events. 3221/4792 cut-off events. For 15271/15273 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 26180 event pairs, 812 based on Foata normal form. 4/4783 useless extension candidates. Maximal degree in co-relation 16379. Up to 4262 conditions per place. [2024-05-12 13:11:05,554 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 81 selfloop transitions, 37 changer transitions 0/128 dead transitions. [2024-05-12 13:11:05,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 128 transitions, 917 flow [2024-05-12 13:11:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:05,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 184 transitions. [2024-05-12 13:11:05,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-05-12 13:11:05,557 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 465 flow. Second operand 7 states and 184 transitions. [2024-05-12 13:11:05,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 128 transitions, 917 flow [2024-05-12 13:11:05,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 128 transitions, 832 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-05-12 13:11:05,573 INFO L231 Difference]: Finished difference. Result has 78 places, 85 transitions, 540 flow [2024-05-12 13:11:05,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=540, PETRI_PLACES=78, PETRI_TRANSITIONS=85} [2024-05-12 13:11:05,574 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 24 predicate places. [2024-05-12 13:11:05,575 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 85 transitions, 540 flow [2024-05-12 13:11:05,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:05,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:05,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:05,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-05-12 13:11:05,576 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:05,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:05,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1030339253, now seen corresponding path program 4 times [2024-05-12 13:11:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127449340] [2024-05-12 13:11:05,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:05,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:06,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:06,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127449340] [2024-05-12 13:11:06,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127449340] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:06,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:06,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:06,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455905747] [2024-05-12 13:11:06,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:06,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:06,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:06,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:06,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:06,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:06,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 85 transitions, 540 flow. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:06,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:06,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:06,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:07,394 INFO L124 PetriNetUnfolderBase]: 3211/4779 cut-off events. [2024-05-12 13:11:07,394 INFO L125 PetriNetUnfolderBase]: For 15316/15321 co-relation queries the response was YES. [2024-05-12 13:11:07,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16352 conditions, 4779 events. 3211/4779 cut-off events. For 15316/15321 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 26067 event pairs, 821 based on Foata normal form. 4/4764 useless extension candidates. Maximal degree in co-relation 16324. Up to 4254 conditions per place. [2024-05-12 13:11:07,425 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 76 selfloop transitions, 37 changer transitions 0/123 dead transitions. [2024-05-12 13:11:07,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 123 transitions, 870 flow [2024-05-12 13:11:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:07,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 178 transitions. [2024-05-12 13:11:07,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297619047619048 [2024-05-12 13:11:07,427 INFO L175 Difference]: Start difference. First operand has 78 places, 85 transitions, 540 flow. Second operand 7 states and 178 transitions. [2024-05-12 13:11:07,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 123 transitions, 870 flow [2024-05-12 13:11:07,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 123 transitions, 812 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:07,448 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 564 flow [2024-05-12 13:11:07,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=564, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2024-05-12 13:11:07,449 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 28 predicate places. [2024-05-12 13:11:07,449 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 564 flow [2024-05-12 13:11:07,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 8 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:07,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:07,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:07,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-05-12 13:11:07,450 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:07,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:07,451 INFO L85 PathProgramCache]: Analyzing trace with hash -188462203, now seen corresponding path program 1 times [2024-05-12 13:11:07,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:07,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453904400] [2024-05-12 13:11:07,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:07,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:08,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:08,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453904400] [2024-05-12 13:11:08,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453904400] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:08,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:08,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:08,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305691481] [2024-05-12 13:11:08,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:08,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:08,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:08,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:08,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:08,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:08,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 564 flow. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:08,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:08,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:08,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:09,824 INFO L124 PetriNetUnfolderBase]: 2773/4319 cut-off events. [2024-05-12 13:11:09,825 INFO L125 PetriNetUnfolderBase]: For 14296/14298 co-relation queries the response was YES. [2024-05-12 13:11:09,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14844 conditions, 4319 events. 2773/4319 cut-off events. For 14296/14298 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 24565 event pairs, 725 based on Foata normal form. 4/4300 useless extension candidates. Maximal degree in co-relation 14814. Up to 3935 conditions per place. [2024-05-12 13:11:09,855 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 102 selfloop transitions, 13 changer transitions 0/126 dead transitions. [2024-05-12 13:11:09,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 126 transitions, 935 flow [2024-05-12 13:11:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 177 transitions. [2024-05-12 13:11:09,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5267857142857143 [2024-05-12 13:11:09,857 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 564 flow. Second operand 7 states and 177 transitions. [2024-05-12 13:11:09,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 126 transitions, 935 flow [2024-05-12 13:11:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 126 transitions, 832 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:11:09,873 INFO L231 Difference]: Finished difference. Result has 84 places, 90 transitions, 545 flow [2024-05-12 13:11:09,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=84, PETRI_TRANSITIONS=90} [2024-05-12 13:11:09,874 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 30 predicate places. [2024-05-12 13:11:09,874 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 90 transitions, 545 flow [2024-05-12 13:11:09,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:09,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:09,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:09,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-05-12 13:11:09,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:09,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:09,875 INFO L85 PathProgramCache]: Analyzing trace with hash 230700209, now seen corresponding path program 1 times [2024-05-12 13:11:09,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:09,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073179520] [2024-05-12 13:11:09,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:09,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:10,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:10,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:10,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073179520] [2024-05-12 13:11:10,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073179520] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:10,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:10,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:11:10,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989296504] [2024-05-12 13:11:10,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:10,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-05-12 13:11:10,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:10,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-05-12 13:11:10,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-05-12 13:11:10,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-05-12 13:11:10,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 90 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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) [2024-05-12 13:11:10,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:10,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-05-12 13:11:10,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:11,560 INFO L124 PetriNetUnfolderBase]: 2544/4307 cut-off events. [2024-05-12 13:11:11,561 INFO L125 PetriNetUnfolderBase]: For 15939/15960 co-relation queries the response was YES. [2024-05-12 13:11:11,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14581 conditions, 4307 events. 2544/4307 cut-off events. For 15939/15960 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27492 event pairs, 1036 based on Foata normal form. 20/4219 useless extension candidates. Maximal degree in co-relation 14549. Up to 3677 conditions per place. [2024-05-12 13:11:11,586 INFO L140 encePairwiseOnDemand]: 40/48 looper letters, 86 selfloop transitions, 9 changer transitions 0/111 dead transitions. [2024-05-12 13:11:11,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 111 transitions, 822 flow [2024-05-12 13:11:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-05-12 13:11:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-05-12 13:11:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-05-12 13:11:11,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-05-12 13:11:11,587 INFO L175 Difference]: Start difference. First operand has 84 places, 90 transitions, 545 flow. Second operand 5 states and 126 transitions. [2024-05-12 13:11:11,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 111 transitions, 822 flow [2024-05-12 13:11:11,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 111 transitions, 777 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:11,604 INFO L231 Difference]: Finished difference. Result has 86 places, 97 transitions, 590 flow [2024-05-12 13:11:11,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=590, PETRI_PLACES=86, PETRI_TRANSITIONS=97} [2024-05-12 13:11:11,605 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2024-05-12 13:11:11,605 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 97 transitions, 590 flow [2024-05-12 13:11:11,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 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) [2024-05-12 13:11:11,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:11,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:11,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-05-12 13:11:11,606 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:11,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:11,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1483807172, now seen corresponding path program 1 times [2024-05-12 13:11:11,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:11,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145805602] [2024-05-12 13:11:11,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:11,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:13,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:13,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:13,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145805602] [2024-05-12 13:11:13,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145805602] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:13,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:13,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:11:13,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229978967] [2024-05-12 13:11:13,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:13,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:13,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:13,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 48 [2024-05-12 13:11:13,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 97 transitions, 590 flow. Second operand has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:13,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:13,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 48 [2024-05-12 13:11:13,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:13,675 INFO L124 PetriNetUnfolderBase]: 2546/4310 cut-off events. [2024-05-12 13:11:13,675 INFO L125 PetriNetUnfolderBase]: For 17921/17942 co-relation queries the response was YES. [2024-05-12 13:11:13,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15265 conditions, 4310 events. 2546/4310 cut-off events. For 17921/17942 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 27511 event pairs, 1034 based on Foata normal form. 20/4223 useless extension candidates. Maximal degree in co-relation 15231. Up to 3669 conditions per place. [2024-05-12 13:11:13,715 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 91 selfloop transitions, 12 changer transitions 0/119 dead transitions. [2024-05-12 13:11:13,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 119 transitions, 874 flow [2024-05-12 13:11:13,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-05-12 13:11:13,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-05-12 13:11:13,717 INFO L175 Difference]: Start difference. First operand has 86 places, 97 transitions, 590 flow. Second operand 6 states and 149 transitions. [2024-05-12 13:11:13,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 119 transitions, 874 flow [2024-05-12 13:11:13,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 119 transitions, 853 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-05-12 13:11:13,737 INFO L231 Difference]: Finished difference. Result has 90 places, 100 transitions, 627 flow [2024-05-12 13:11:13,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=627, PETRI_PLACES=90, PETRI_TRANSITIONS=100} [2024-05-12 13:11:13,738 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 36 predicate places. [2024-05-12 13:11:13,738 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 100 transitions, 627 flow [2024-05-12 13:11:13,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:13,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:13,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:13,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-05-12 13:11:13,739 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:13,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1460439308, now seen corresponding path program 1 times [2024-05-12 13:11:13,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:13,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225473608] [2024-05-12 13:11:13,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:13,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:14,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:14,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225473608] [2024-05-12 13:11:14,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225473608] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:14,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:14,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:14,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065771987] [2024-05-12 13:11:14,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:14,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:11:14,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:14,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:11:14,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:11:14,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:15,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 100 transitions, 627 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:15,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:15,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:15,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:16,091 INFO L124 PetriNetUnfolderBase]: 3542/5845 cut-off events. [2024-05-12 13:11:16,091 INFO L125 PetriNetUnfolderBase]: For 30308/30312 co-relation queries the response was YES. [2024-05-12 13:11:16,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21745 conditions, 5845 events. 3542/5845 cut-off events. For 30308/30312 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 36770 event pairs, 888 based on Foata normal form. 20/5689 useless extension candidates. Maximal degree in co-relation 21709. Up to 4437 conditions per place. [2024-05-12 13:11:16,125 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 128 selfloop transitions, 33 changer transitions 0/171 dead transitions. [2024-05-12 13:11:16,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 171 transitions, 1261 flow [2024-05-12 13:11:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:11:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:11:16,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 234 transitions. [2024-05-12 13:11:16,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-05-12 13:11:16,129 INFO L175 Difference]: Start difference. First operand has 90 places, 100 transitions, 627 flow. Second operand 9 states and 234 transitions. [2024-05-12 13:11:16,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 171 transitions, 1261 flow [2024-05-12 13:11:16,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 171 transitions, 1225 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:16,155 INFO L231 Difference]: Finished difference. Result has 95 places, 102 transitions, 701 flow [2024-05-12 13:11:16,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=701, PETRI_PLACES=95, PETRI_TRANSITIONS=102} [2024-05-12 13:11:16,156 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 41 predicate places. [2024-05-12 13:11:16,156 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 102 transitions, 701 flow [2024-05-12 13:11:16,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:16,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:16,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:16,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-05-12 13:11:16,157 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:16,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:16,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1460378858, now seen corresponding path program 2 times [2024-05-12 13:11:16,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:16,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853363545] [2024-05-12 13:11:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:16,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:17,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:17,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:17,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853363545] [2024-05-12 13:11:17,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853363545] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:17,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:17,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:17,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482345895] [2024-05-12 13:11:17,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:11:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:17,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:11:17,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:11:17,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:17,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 102 transitions, 701 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:17,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:17,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:17,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:18,541 INFO L124 PetriNetUnfolderBase]: 3506/5815 cut-off events. [2024-05-12 13:11:18,541 INFO L125 PetriNetUnfolderBase]: For 32509/32513 co-relation queries the response was YES. [2024-05-12 13:11:18,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21843 conditions, 5815 events. 3506/5815 cut-off events. For 32509/32513 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 36704 event pairs, 1165 based on Foata normal form. 24/5653 useless extension candidates. Maximal degree in co-relation 21806. Up to 4665 conditions per place. [2024-05-12 13:11:18,575 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 117 selfloop transitions, 30 changer transitions 0/157 dead transitions. [2024-05-12 13:11:18,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 157 transitions, 1181 flow [2024-05-12 13:11:18,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:18,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-05-12 13:11:18,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-05-12 13:11:18,577 INFO L175 Difference]: Start difference. First operand has 95 places, 102 transitions, 701 flow. Second operand 8 states and 205 transitions. [2024-05-12 13:11:18,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 157 transitions, 1181 flow [2024-05-12 13:11:18,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 157 transitions, 1132 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-05-12 13:11:18,607 INFO L231 Difference]: Finished difference. Result has 98 places, 102 transitions, 721 flow [2024-05-12 13:11:18,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=721, PETRI_PLACES=98, PETRI_TRANSITIONS=102} [2024-05-12 13:11:18,608 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2024-05-12 13:11:18,608 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 102 transitions, 721 flow [2024-05-12 13:11:18,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:18,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:18,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:18,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-05-12 13:11:18,608 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:18,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:18,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1342291178, now seen corresponding path program 3 times [2024-05-12 13:11:18,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:18,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237619167] [2024-05-12 13:11:18,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:18,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:19,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:19,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237619167] [2024-05-12 13:11:19,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237619167] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:19,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:19,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308082179] [2024-05-12 13:11:19,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:11:19,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:11:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:11:19,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:19,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 102 transitions, 721 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:19,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:19,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:19,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:20,818 INFO L124 PetriNetUnfolderBase]: 3673/6002 cut-off events. [2024-05-12 13:11:20,819 INFO L125 PetriNetUnfolderBase]: For 36063/36068 co-relation queries the response was YES. [2024-05-12 13:11:20,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23175 conditions, 6002 events. 3673/6002 cut-off events. For 36063/36068 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 37386 event pairs, 1022 based on Foata normal form. 20/5847 useless extension candidates. Maximal degree in co-relation 23136. Up to 4743 conditions per place. [2024-05-12 13:11:20,861 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 104 selfloop transitions, 42 changer transitions 0/156 dead transitions. [2024-05-12 13:11:20,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 156 transitions, 1207 flow [2024-05-12 13:11:20,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:20,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 209 transitions. [2024-05-12 13:11:20,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2024-05-12 13:11:20,863 INFO L175 Difference]: Start difference. First operand has 98 places, 102 transitions, 721 flow. Second operand 8 states and 209 transitions. [2024-05-12 13:11:20,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 156 transitions, 1207 flow [2024-05-12 13:11:20,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 156 transitions, 1140 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-05-12 13:11:20,905 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 767 flow [2024-05-12 13:11:20,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=767, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2024-05-12 13:11:20,905 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 45 predicate places. [2024-05-12 13:11:20,906 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 767 flow [2024-05-12 13:11:20,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:20,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:20,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:20,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-05-12 13:11:20,906 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:20,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:20,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1342106480, now seen corresponding path program 1 times [2024-05-12 13:11:20,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:20,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143211938] [2024-05-12 13:11:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:20,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:22,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:22,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:22,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143211938] [2024-05-12 13:11:22,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143211938] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:22,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:22,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:22,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927083374] [2024-05-12 13:11:22,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:22,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:11:22,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:22,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:11:22,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:11:22,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:22,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 767 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:22,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:22,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:22,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:23,147 INFO L124 PetriNetUnfolderBase]: 3710/6111 cut-off events. [2024-05-12 13:11:23,148 INFO L125 PetriNetUnfolderBase]: For 39022/39029 co-relation queries the response was YES. [2024-05-12 13:11:23,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23857 conditions, 6111 events. 3710/6111 cut-off events. For 39022/39029 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 38566 event pairs, 1060 based on Foata normal form. 8/5929 useless extension candidates. Maximal degree in co-relation 23817. Up to 5202 conditions per place. [2024-05-12 13:11:23,186 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 120 selfloop transitions, 28 changer transitions 0/158 dead transitions. [2024-05-12 13:11:23,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 158 transitions, 1270 flow [2024-05-12 13:11:23,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:23,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:23,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 202 transitions. [2024-05-12 13:11:23,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2024-05-12 13:11:23,188 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 767 flow. Second operand 8 states and 202 transitions. [2024-05-12 13:11:23,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 158 transitions, 1270 flow [2024-05-12 13:11:23,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 158 transitions, 1177 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-05-12 13:11:23,226 INFO L231 Difference]: Finished difference. Result has 102 places, 108 transitions, 795 flow [2024-05-12 13:11:23,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=795, PETRI_PLACES=102, PETRI_TRANSITIONS=108} [2024-05-12 13:11:23,227 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 48 predicate places. [2024-05-12 13:11:23,227 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 108 transitions, 795 flow [2024-05-12 13:11:23,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:23,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:23,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:23,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-05-12 13:11:23,228 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:23,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1235146646, now seen corresponding path program 1 times [2024-05-12 13:11:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:23,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157492678] [2024-05-12 13:11:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:23,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:24,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:24,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157492678] [2024-05-12 13:11:24,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157492678] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:24,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:24,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:11:24,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473485786] [2024-05-12 13:11:24,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:24,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:24,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:24,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:24,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:24,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 108 transitions, 795 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-05-12 13:11:24,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:24,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:24,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:25,076 INFO L124 PetriNetUnfolderBase]: 3480/5767 cut-off events. [2024-05-12 13:11:25,076 INFO L125 PetriNetUnfolderBase]: For 41543/41570 co-relation queries the response was YES. [2024-05-12 13:11:25,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23206 conditions, 5767 events. 3480/5767 cut-off events. For 41543/41570 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 37590 event pairs, 1297 based on Foata normal form. 19/5630 useless extension candidates. Maximal degree in co-relation 23164. Up to 4980 conditions per place. [2024-05-12 13:11:25,109 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 107 selfloop transitions, 23 changer transitions 0/147 dead transitions. [2024-05-12 13:11:25,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 147 transitions, 1269 flow [2024-05-12 13:11:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 149 transitions. [2024-05-12 13:11:25,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173611111111112 [2024-05-12 13:11:25,110 INFO L175 Difference]: Start difference. First operand has 102 places, 108 transitions, 795 flow. Second operand 6 states and 149 transitions. [2024-05-12 13:11:25,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 147 transitions, 1269 flow [2024-05-12 13:11:25,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 147 transitions, 1186 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 13:11:25,146 INFO L231 Difference]: Finished difference. Result has 104 places, 125 transitions, 965 flow [2024-05-12 13:11:25,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=965, PETRI_PLACES=104, PETRI_TRANSITIONS=125} [2024-05-12 13:11:25,147 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 50 predicate places. [2024-05-12 13:11:25,147 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 125 transitions, 965 flow [2024-05-12 13:11:25,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-05-12 13:11:25,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:25,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:25,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-05-12 13:11:25,148 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:25,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1377374998, now seen corresponding path program 4 times [2024-05-12 13:11:25,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:25,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47131982] [2024-05-12 13:11:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:25,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:26,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:26,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47131982] [2024-05-12 13:11:26,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47131982] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:26,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:26,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:26,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643147057] [2024-05-12 13:11:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:26,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:11:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:11:26,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:11:26,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:26,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 125 transitions, 965 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:26,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:26,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:26,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:27,278 INFO L124 PetriNetUnfolderBase]: 3821/6217 cut-off events. [2024-05-12 13:11:27,279 INFO L125 PetriNetUnfolderBase]: For 48343/48348 co-relation queries the response was YES. [2024-05-12 13:11:27,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25928 conditions, 6217 events. 3821/6217 cut-off events. For 48343/48348 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39170 event pairs, 1132 based on Foata normal form. 20/6069 useless extension candidates. Maximal degree in co-relation 25884. Up to 4967 conditions per place. [2024-05-12 13:11:27,317 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 110 selfloop transitions, 56 changer transitions 0/176 dead transitions. [2024-05-12 13:11:27,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 176 transitions, 1503 flow [2024-05-12 13:11:27,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:27,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 205 transitions. [2024-05-12 13:11:27,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338541666666666 [2024-05-12 13:11:27,318 INFO L175 Difference]: Start difference. First operand has 104 places, 125 transitions, 965 flow. Second operand 8 states and 205 transitions. [2024-05-12 13:11:27,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 176 transitions, 1503 flow [2024-05-12 13:11:27,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 176 transitions, 1460 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:27,358 INFO L231 Difference]: Finished difference. Result has 109 places, 126 transitions, 1067 flow [2024-05-12 13:11:27,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1067, PETRI_PLACES=109, PETRI_TRANSITIONS=126} [2024-05-12 13:11:27,359 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 55 predicate places. [2024-05-12 13:11:27,359 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 126 transitions, 1067 flow [2024-05-12 13:11:27,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:27,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:27,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:27,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-05-12 13:11:27,360 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:27,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1377559696, now seen corresponding path program 2 times [2024-05-12 13:11:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:27,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595660820] [2024-05-12 13:11:27,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:27,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:28,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:28,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:28,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595660820] [2024-05-12 13:11:28,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595660820] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:28,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:28,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:28,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452303789] [2024-05-12 13:11:28,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:28,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:11:28,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:28,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:11:28,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:11:28,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:28,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 126 transitions, 1067 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:28,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:28,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:28,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:29,836 INFO L124 PetriNetUnfolderBase]: 3881/6331 cut-off events. [2024-05-12 13:11:29,836 INFO L125 PetriNetUnfolderBase]: For 52337/52349 co-relation queries the response was YES. [2024-05-12 13:11:29,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26937 conditions, 6331 events. 3881/6331 cut-off events. For 52337/52349 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 40366 event pairs, 1244 based on Foata normal form. 12/6185 useless extension candidates. Maximal degree in co-relation 26892. Up to 5450 conditions per place. [2024-05-12 13:11:29,884 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 134 selfloop transitions, 35 changer transitions 0/179 dead transitions. [2024-05-12 13:11:29,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 179 transitions, 1626 flow [2024-05-12 13:11:29,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-05-12 13:11:29,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-05-12 13:11:29,886 INFO L175 Difference]: Start difference. First operand has 109 places, 126 transitions, 1067 flow. Second operand 8 states and 199 transitions. [2024-05-12 13:11:29,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 179 transitions, 1626 flow [2024-05-12 13:11:29,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 179 transitions, 1499 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-05-12 13:11:29,929 INFO L231 Difference]: Finished difference. Result has 112 places, 132 transitions, 1092 flow [2024-05-12 13:11:29,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1092, PETRI_PLACES=112, PETRI_TRANSITIONS=132} [2024-05-12 13:11:29,929 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 58 predicate places. [2024-05-12 13:11:29,929 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 132 transitions, 1092 flow [2024-05-12 13:11:29,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:29,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:29,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:29,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-05-12 13:11:29,930 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:29,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:29,930 INFO L85 PathProgramCache]: Analyzing trace with hash -723795898, now seen corresponding path program 3 times [2024-05-12 13:11:29,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:29,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190341294] [2024-05-12 13:11:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:29,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:31,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:31,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:31,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190341294] [2024-05-12 13:11:31,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190341294] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:31,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:31,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:31,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582047372] [2024-05-12 13:11:31,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:31,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:11:31,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:31,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:11:31,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:11:31,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:31,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 132 transitions, 1092 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:31,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:31,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:31,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:32,257 INFO L124 PetriNetUnfolderBase]: 3918/6406 cut-off events. [2024-05-12 13:11:32,257 INFO L125 PetriNetUnfolderBase]: For 55143/55155 co-relation queries the response was YES. [2024-05-12 13:11:32,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27597 conditions, 6406 events. 3918/6406 cut-off events. For 55143/55155 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 41011 event pairs, 1253 based on Foata normal form. 12/6259 useless extension candidates. Maximal degree in co-relation 27550. Up to 5505 conditions per place. [2024-05-12 13:11:32,301 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 135 selfloop transitions, 38 changer transitions 0/183 dead transitions. [2024-05-12 13:11:32,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 183 transitions, 1651 flow [2024-05-12 13:11:32,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-05-12 13:11:32,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.515625 [2024-05-12 13:11:32,304 INFO L175 Difference]: Start difference. First operand has 112 places, 132 transitions, 1092 flow. Second operand 8 states and 198 transitions. [2024-05-12 13:11:32,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 183 transitions, 1651 flow [2024-05-12 13:11:32,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 183 transitions, 1550 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-05-12 13:11:32,352 INFO L231 Difference]: Finished difference. Result has 115 places, 136 transitions, 1133 flow [2024-05-12 13:11:32,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1133, PETRI_PLACES=115, PETRI_TRANSITIONS=136} [2024-05-12 13:11:32,352 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 61 predicate places. [2024-05-12 13:11:32,352 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 136 transitions, 1133 flow [2024-05-12 13:11:32,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:32,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:32,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:32,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-05-12 13:11:32,353 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:32,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1614031726, now seen corresponding path program 4 times [2024-05-12 13:11:32,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:32,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723005317] [2024-05-12 13:11:32,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:33,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:33,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723005317] [2024-05-12 13:11:33,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723005317] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:33,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:33,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:11:33,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480607492] [2024-05-12 13:11:33,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:33,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:11:33,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:33,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:11:33,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:11:33,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:33,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 136 transitions, 1133 flow. Second operand has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:33,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:33,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:33,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:34,621 INFO L124 PetriNetUnfolderBase]: 3910/6354 cut-off events. [2024-05-12 13:11:34,621 INFO L125 PetriNetUnfolderBase]: For 57853/57865 co-relation queries the response was YES. [2024-05-12 13:11:34,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27732 conditions, 6354 events. 3910/6354 cut-off events. For 57853/57865 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 40332 event pairs, 1095 based on Foata normal form. 12/6215 useless extension candidates. Maximal degree in co-relation 27684. Up to 5348 conditions per place. [2024-05-12 13:11:34,660 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 131 selfloop transitions, 45 changer transitions 0/186 dead transitions. [2024-05-12 13:11:34,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 186 transitions, 1685 flow [2024-05-12 13:11:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:11:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:11:34,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 199 transitions. [2024-05-12 13:11:34,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5182291666666666 [2024-05-12 13:11:34,661 INFO L175 Difference]: Start difference. First operand has 115 places, 136 transitions, 1133 flow. Second operand 8 states and 199 transitions. [2024-05-12 13:11:34,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 186 transitions, 1685 flow [2024-05-12 13:11:34,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 186 transitions, 1598 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:34,723 INFO L231 Difference]: Finished difference. Result has 119 places, 138 transitions, 1187 flow [2024-05-12 13:11:34,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1046, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1187, PETRI_PLACES=119, PETRI_TRANSITIONS=138} [2024-05-12 13:11:34,724 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-05-12 13:11:34,724 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 138 transitions, 1187 flow [2024-05-12 13:11:34,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.444444444444445) internal successors, (130), 9 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:34,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:34,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:34,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-05-12 13:11:34,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:34,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:34,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1235475866, now seen corresponding path program 2 times [2024-05-12 13:11:34,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:34,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745187474] [2024-05-12 13:11:34,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:34,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:34,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:35,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:35,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:35,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745187474] [2024-05-12 13:11:35,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745187474] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:35,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:35,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:11:35,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639710462] [2024-05-12 13:11:35,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:35,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:35,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:35,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:35,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 138 transitions, 1187 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-05-12 13:11:35,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:35,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:35,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:36,382 INFO L124 PetriNetUnfolderBase]: 3629/6089 cut-off events. [2024-05-12 13:11:36,382 INFO L125 PetriNetUnfolderBase]: For 59785/59804 co-relation queries the response was YES. [2024-05-12 13:11:36,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26236 conditions, 6089 events. 3629/6089 cut-off events. For 59785/59804 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 40629 event pairs, 1358 based on Foata normal form. 18/5933 useless extension candidates. Maximal degree in co-relation 26187. Up to 5178 conditions per place. [2024-05-12 13:11:36,425 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 110 selfloop transitions, 28 changer transitions 0/160 dead transitions. [2024-05-12 13:11:36,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 160 transitions, 1553 flow [2024-05-12 13:11:36,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:36,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:36,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-05-12 13:11:36,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-05-12 13:11:36,426 INFO L175 Difference]: Start difference. First operand has 119 places, 138 transitions, 1187 flow. Second operand 6 states and 146 transitions. [2024-05-12 13:11:36,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 160 transitions, 1553 flow [2024-05-12 13:11:36,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 160 transitions, 1430 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 13:11:36,491 INFO L231 Difference]: Finished difference. Result has 119 places, 141 transitions, 1162 flow [2024-05-12 13:11:36,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1162, PETRI_PLACES=119, PETRI_TRANSITIONS=141} [2024-05-12 13:11:36,492 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 65 predicate places. [2024-05-12 13:11:36,492 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 141 transitions, 1162 flow [2024-05-12 13:11:36,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-05-12 13:11:36,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:36,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:36,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-05-12 13:11:36,492 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:36,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:36,493 INFO L85 PathProgramCache]: Analyzing trace with hash 841273272, now seen corresponding path program 1 times [2024-05-12 13:11:36,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:36,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808828986] [2024-05-12 13:11:36,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:36,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:36,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:37,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:37,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808828986] [2024-05-12 13:11:37,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808828986] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:37,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:37,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:11:37,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555068042] [2024-05-12 13:11:37,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:37,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:37,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:37,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:37,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:37,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 141 transitions, 1162 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-05-12 13:11:37,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:37,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:37,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:38,116 INFO L124 PetriNetUnfolderBase]: 3516/5938 cut-off events. [2024-05-12 13:11:38,117 INFO L125 PetriNetUnfolderBase]: For 57117/57119 co-relation queries the response was YES. [2024-05-12 13:11:38,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26106 conditions, 5938 events. 3516/5938 cut-off events. For 57117/57119 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 39166 event pairs, 1174 based on Foata normal form. 2/5804 useless extension candidates. Maximal degree in co-relation 26056. Up to 5100 conditions per place. [2024-05-12 13:11:38,159 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 145 selfloop transitions, 13 changer transitions 0/169 dead transitions. [2024-05-12 13:11:38,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 169 transitions, 1606 flow [2024-05-12 13:11:38,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 147 transitions. [2024-05-12 13:11:38,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-05-12 13:11:38,160 INFO L175 Difference]: Start difference. First operand has 119 places, 141 transitions, 1162 flow. Second operand 6 states and 147 transitions. [2024-05-12 13:11:38,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 169 transitions, 1606 flow [2024-05-12 13:11:38,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 169 transitions, 1530 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:38,221 INFO L231 Difference]: Finished difference. Result has 122 places, 148 transitions, 1195 flow [2024-05-12 13:11:38,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1195, PETRI_PLACES=122, PETRI_TRANSITIONS=148} [2024-05-12 13:11:38,221 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 68 predicate places. [2024-05-12 13:11:38,221 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 148 transitions, 1195 flow [2024-05-12 13:11:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-05-12 13:11:38,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:38,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:38,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-05-12 13:11:38,222 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:38,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:38,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1635369968, now seen corresponding path program 2 times [2024-05-12 13:11:38,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:38,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009317270] [2024-05-12 13:11:38,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:38,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:39,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:39,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:39,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009317270] [2024-05-12 13:11:39,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009317270] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:39,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:39,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-05-12 13:11:39,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024981708] [2024-05-12 13:11:39,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:39,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-05-12 13:11:39,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:39,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-05-12 13:11:39,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-05-12 13:11:39,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:39,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 148 transitions, 1195 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-05-12 13:11:39,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:39,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:39,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:39,887 INFO L124 PetriNetUnfolderBase]: 3535/6227 cut-off events. [2024-05-12 13:11:39,887 INFO L125 PetriNetUnfolderBase]: For 61617/61625 co-relation queries the response was YES. [2024-05-12 13:11:39,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27241 conditions, 6227 events. 3535/6227 cut-off events. For 61617/61625 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 42621 event pairs, 1169 based on Foata normal form. 6/6025 useless extension candidates. Maximal degree in co-relation 27189. Up to 5095 conditions per place. [2024-05-12 13:11:39,926 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 143 selfloop transitions, 18 changer transitions 0/172 dead transitions. [2024-05-12 13:11:39,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 172 transitions, 1633 flow [2024-05-12 13:11:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-05-12 13:11:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-05-12 13:11:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2024-05-12 13:11:39,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5138888888888888 [2024-05-12 13:11:39,927 INFO L175 Difference]: Start difference. First operand has 122 places, 148 transitions, 1195 flow. Second operand 6 states and 148 transitions. [2024-05-12 13:11:39,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 172 transitions, 1633 flow [2024-05-12 13:11:39,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 172 transitions, 1588 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:39,981 INFO L231 Difference]: Finished difference. Result has 125 places, 151 transitions, 1234 flow [2024-05-12 13:11:39,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1234, PETRI_PLACES=125, PETRI_TRANSITIONS=151} [2024-05-12 13:11:39,982 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 71 predicate places. [2024-05-12 13:11:39,982 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 151 transitions, 1234 flow [2024-05-12 13:11:39,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 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) [2024-05-12 13:11:39,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:39,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:39,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-05-12 13:11:39,982 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:39,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:39,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1073223212, now seen corresponding path program 1 times [2024-05-12 13:11:39,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:39,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291304942] [2024-05-12 13:11:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:39,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:41,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:41,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:41,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291304942] [2024-05-12 13:11:41,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291304942] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:41,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:41,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:11:41,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833118802] [2024-05-12 13:11:41,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:41,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:11:41,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:11:41,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:11:41,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:41,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 151 transitions, 1234 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:41,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:41,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:41,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:42,532 INFO L124 PetriNetUnfolderBase]: 4246/7033 cut-off events. [2024-05-12 13:11:42,533 INFO L125 PetriNetUnfolderBase]: For 85723/85731 co-relation queries the response was YES. [2024-05-12 13:11:42,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32958 conditions, 7033 events. 4246/7033 cut-off events. For 85723/85731 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 46595 event pairs, 1288 based on Foata normal form. 13/6882 useless extension candidates. Maximal degree in co-relation 32905. Up to 5298 conditions per place. [2024-05-12 13:11:42,591 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 140 selfloop transitions, 72 changer transitions 0/222 dead transitions. [2024-05-12 13:11:42,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 222 transitions, 2011 flow [2024-05-12 13:11:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:11:42,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:11:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 233 transitions. [2024-05-12 13:11:42,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5393518518518519 [2024-05-12 13:11:42,593 INFO L175 Difference]: Start difference. First operand has 125 places, 151 transitions, 1234 flow. Second operand 9 states and 233 transitions. [2024-05-12 13:11:42,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 222 transitions, 2011 flow [2024-05-12 13:11:42,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 222 transitions, 1949 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:42,669 INFO L231 Difference]: Finished difference. Result has 132 places, 161 transitions, 1475 flow [2024-05-12 13:11:42,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1475, PETRI_PLACES=132, PETRI_TRANSITIONS=161} [2024-05-12 13:11:42,670 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 78 predicate places. [2024-05-12 13:11:42,670 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 161 transitions, 1475 flow [2024-05-12 13:11:42,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:42,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:42,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:42,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-05-12 13:11:42,670 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:42,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:42,671 INFO L85 PathProgramCache]: Analyzing trace with hash -365158467, now seen corresponding path program 1 times [2024-05-12 13:11:42,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:42,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335542333] [2024-05-12 13:11:42,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:42,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:43,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:43,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:43,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335542333] [2024-05-12 13:11:43,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335542333] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:43,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:43,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:43,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797452116] [2024-05-12 13:11:43,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:43,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:43,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:43,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:43,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:43,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:43,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 161 transitions, 1475 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:43,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:43,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:43,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:44,563 INFO L124 PetriNetUnfolderBase]: 3974/6694 cut-off events. [2024-05-12 13:11:44,564 INFO L125 PetriNetUnfolderBase]: For 89726/89766 co-relation queries the response was YES. [2024-05-12 13:11:44,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32428 conditions, 6694 events. 3974/6694 cut-off events. For 89726/89766 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 45396 event pairs, 1360 based on Foata normal form. 25/6528 useless extension candidates. Maximal degree in co-relation 32372. Up to 5689 conditions per place. [2024-05-12 13:11:44,617 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 143 selfloop transitions, 26 changer transitions 0/191 dead transitions. [2024-05-12 13:11:44,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 191 transitions, 1931 flow [2024-05-12 13:11:44,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:44,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:44,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 171 transitions. [2024-05-12 13:11:44,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2024-05-12 13:11:44,618 INFO L175 Difference]: Start difference. First operand has 132 places, 161 transitions, 1475 flow. Second operand 7 states and 171 transitions. [2024-05-12 13:11:44,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 191 transitions, 1931 flow [2024-05-12 13:11:44,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 191 transitions, 1802 flow, removed 15 selfloop flow, removed 4 redundant places. [2024-05-12 13:11:44,692 INFO L231 Difference]: Finished difference. Result has 135 places, 164 transitions, 1440 flow [2024-05-12 13:11:44,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1346, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1440, PETRI_PLACES=135, PETRI_TRANSITIONS=164} [2024-05-12 13:11:44,693 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 81 predicate places. [2024-05-12 13:11:44,693 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 164 transitions, 1440 flow [2024-05-12 13:11:44,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:44,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:44,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:44,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-05-12 13:11:44,694 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:44,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:44,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1219335200, now seen corresponding path program 2 times [2024-05-12 13:11:44,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:44,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110867653] [2024-05-12 13:11:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:44,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:45,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:45,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:45,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110867653] [2024-05-12 13:11:45,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110867653] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:45,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:45,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:11:45,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890932021] [2024-05-12 13:11:45,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:45,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:11:45,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:45,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:11:45,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:11:45,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:45,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 164 transitions, 1440 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:45,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:45,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:45,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:47,379 INFO L124 PetriNetUnfolderBase]: 4526/7485 cut-off events. [2024-05-12 13:11:47,379 INFO L125 PetriNetUnfolderBase]: For 99364/99369 co-relation queries the response was YES. [2024-05-12 13:11:47,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36323 conditions, 7485 events. 4526/7485 cut-off events. For 99364/99369 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 50172 event pairs, 1379 based on Foata normal form. 12/7324 useless extension candidates. Maximal degree in co-relation 36266. Up to 5907 conditions per place. [2024-05-12 13:11:47,434 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 141 selfloop transitions, 78 changer transitions 0/229 dead transitions. [2024-05-12 13:11:47,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 229 transitions, 2185 flow [2024-05-12 13:11:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:11:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:11:47,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-05-12 13:11:47,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-05-12 13:11:47,435 INFO L175 Difference]: Start difference. First operand has 135 places, 164 transitions, 1440 flow. Second operand 9 states and 230 transitions. [2024-05-12 13:11:47,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 229 transitions, 2185 flow [2024-05-12 13:11:47,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 229 transitions, 2113 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-05-12 13:11:47,519 INFO L231 Difference]: Finished difference. Result has 141 places, 172 transitions, 1659 flow [2024-05-12 13:11:47,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1368, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1659, PETRI_PLACES=141, PETRI_TRANSITIONS=172} [2024-05-12 13:11:47,521 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 87 predicate places. [2024-05-12 13:11:47,521 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 172 transitions, 1659 flow [2024-05-12 13:11:47,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:47,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:47,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:47,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-05-12 13:11:47,522 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:47,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash -953637920, now seen corresponding path program 3 times [2024-05-12 13:11:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:47,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371924271] [2024-05-12 13:11:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:48,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:48,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:48,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371924271] [2024-05-12 13:11:48,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371924271] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:48,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:48,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:11:48,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873639698] [2024-05-12 13:11:48,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:48,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:11:48,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:48,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:11:48,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:11:48,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:48,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 172 transitions, 1659 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:48,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:48,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:48,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:49,876 INFO L124 PetriNetUnfolderBase]: 4712/7721 cut-off events. [2024-05-12 13:11:49,877 INFO L125 PetriNetUnfolderBase]: For 113703/113708 co-relation queries the response was YES. [2024-05-12 13:11:49,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39118 conditions, 7721 events. 4712/7721 cut-off events. For 113703/113708 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 51291 event pairs, 1232 based on Foata normal form. 12/7584 useless extension candidates. Maximal degree in co-relation 39058. Up to 5109 conditions per place. [2024-05-12 13:11:49,938 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 135 selfloop transitions, 88 changer transitions 0/233 dead transitions. [2024-05-12 13:11:49,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 233 transitions, 2435 flow [2024-05-12 13:11:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:11:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:11:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 231 transitions. [2024-05-12 13:11:49,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5347222222222222 [2024-05-12 13:11:49,939 INFO L175 Difference]: Start difference. First operand has 141 places, 172 transitions, 1659 flow. Second operand 9 states and 231 transitions. [2024-05-12 13:11:49,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 233 transitions, 2435 flow [2024-05-12 13:11:50,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 233 transitions, 2318 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-05-12 13:11:50,061 INFO L231 Difference]: Finished difference. Result has 148 places, 174 transitions, 1804 flow [2024-05-12 13:11:50,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1804, PETRI_PLACES=148, PETRI_TRANSITIONS=174} [2024-05-12 13:11:50,062 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 94 predicate places. [2024-05-12 13:11:50,062 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 174 transitions, 1804 flow [2024-05-12 13:11:50,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:50,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:50,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:50,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-05-12 13:11:50,062 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:50,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:50,063 INFO L85 PathProgramCache]: Analyzing trace with hash 305663742, now seen corresponding path program 4 times [2024-05-12 13:11:50,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:50,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216232566] [2024-05-12 13:11:50,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:50,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:51,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:51,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:51,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216232566] [2024-05-12 13:11:51,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216232566] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:51,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:51,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:11:51,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778583573] [2024-05-12 13:11:51,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:51,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:11:51,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:51,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:11:51,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:11:51,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:11:51,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 174 transitions, 1804 flow. Second operand has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:51,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:51,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:11:51,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:52,570 INFO L124 PetriNetUnfolderBase]: 4692/7819 cut-off events. [2024-05-12 13:11:52,571 INFO L125 PetriNetUnfolderBase]: For 112922/112927 co-relation queries the response was YES. [2024-05-12 13:11:52,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38806 conditions, 7819 events. 4692/7819 cut-off events. For 112922/112927 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53249 event pairs, 1449 based on Foata normal form. 12/7648 useless extension candidates. Maximal degree in co-relation 38744. Up to 6169 conditions per place. [2024-05-12 13:11:52,644 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 144 selfloop transitions, 76 changer transitions 0/230 dead transitions. [2024-05-12 13:11:52,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 230 transitions, 2420 flow [2024-05-12 13:11:52,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:11:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:11:52,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 230 transitions. [2024-05-12 13:11:52,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-05-12 13:11:52,646 INFO L175 Difference]: Start difference. First operand has 148 places, 174 transitions, 1804 flow. Second operand 9 states and 230 transitions. [2024-05-12 13:11:52,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 230 transitions, 2420 flow [2024-05-12 13:11:52,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 230 transitions, 2236 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-05-12 13:11:52,782 INFO L231 Difference]: Finished difference. Result has 150 places, 173 transitions, 1732 flow [2024-05-12 13:11:52,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1576, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1732, PETRI_PLACES=150, PETRI_TRANSITIONS=173} [2024-05-12 13:11:52,783 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-05-12 13:11:52,783 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 173 transitions, 1732 flow [2024-05-12 13:11:52,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.4) internal successors, (144), 10 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:52,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:52,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:52,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-05-12 13:11:52,784 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:52,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:52,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1746990713, now seen corresponding path program 2 times [2024-05-12 13:11:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:52,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103115701] [2024-05-12 13:11:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:53,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:53,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:53,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103115701] [2024-05-12 13:11:53,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103115701] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:53,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:53,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:53,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345015046] [2024-05-12 13:11:53,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:53,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:53,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:53,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:53,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:53,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:53,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 173 transitions, 1732 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:53,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:53,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:53,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:55,085 INFO L124 PetriNetUnfolderBase]: 4367/7691 cut-off events. [2024-05-12 13:11:55,086 INFO L125 PetriNetUnfolderBase]: For 106894/106931 co-relation queries the response was YES. [2024-05-12 13:11:55,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36430 conditions, 7691 events. 4367/7691 cut-off events. For 106894/106931 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 55402 event pairs, 1462 based on Foata normal form. 29/7400 useless extension candidates. Maximal degree in co-relation 36367. Up to 6290 conditions per place. [2024-05-12 13:11:55,144 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 147 selfloop transitions, 31 changer transitions 0/200 dead transitions. [2024-05-12 13:11:55,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 200 transitions, 2206 flow [2024-05-12 13:11:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:55,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:55,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-05-12 13:11:55,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-05-12 13:11:55,145 INFO L175 Difference]: Start difference. First operand has 150 places, 173 transitions, 1732 flow. Second operand 7 states and 167 transitions. [2024-05-12 13:11:55,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 200 transitions, 2206 flow [2024-05-12 13:11:55,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 200 transitions, 1943 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-05-12 13:11:55,235 INFO L231 Difference]: Finished difference. Result has 147 places, 176 transitions, 1579 flow [2024-05-12 13:11:55,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1579, PETRI_PLACES=147, PETRI_TRANSITIONS=176} [2024-05-12 13:11:55,236 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 93 predicate places. [2024-05-12 13:11:55,236 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 176 transitions, 1579 flow [2024-05-12 13:11:55,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:55,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:55,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:55,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-05-12 13:11:55,236 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:55,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:55,237 INFO L85 PathProgramCache]: Analyzing trace with hash -9527397, now seen corresponding path program 3 times [2024-05-12 13:11:55,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:55,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222194111] [2024-05-12 13:11:55,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:55,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:56,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:56,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:56,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222194111] [2024-05-12 13:11:56,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222194111] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:56,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:56,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:56,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112362491] [2024-05-12 13:11:56,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:56,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:56,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:56,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:56,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:56,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:56,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 176 transitions, 1579 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:56,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:56,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:56,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:57,408 INFO L124 PetriNetUnfolderBase]: 4366/7685 cut-off events. [2024-05-12 13:11:57,409 INFO L125 PetriNetUnfolderBase]: For 104913/104950 co-relation queries the response was YES. [2024-05-12 13:11:57,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35876 conditions, 7685 events. 4366/7685 cut-off events. For 104913/104950 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 55302 event pairs, 1460 based on Foata normal form. 34/7400 useless extension candidates. Maximal degree in co-relation 35816. Up to 6246 conditions per place. [2024-05-12 13:11:57,472 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 145 selfloop transitions, 39 changer transitions 0/206 dead transitions. [2024-05-12 13:11:57,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 206 transitions, 2085 flow [2024-05-12 13:11:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:57,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 13:11:57,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:11:57,473 INFO L175 Difference]: Start difference. First operand has 147 places, 176 transitions, 1579 flow. Second operand 7 states and 168 transitions. [2024-05-12 13:11:57,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 206 transitions, 2085 flow [2024-05-12 13:11:57,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 206 transitions, 1997 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-05-12 13:11:57,564 INFO L231 Difference]: Finished difference. Result has 150 places, 182 transitions, 1653 flow [2024-05-12 13:11:57,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1653, PETRI_PLACES=150, PETRI_TRANSITIONS=182} [2024-05-12 13:11:57,564 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 96 predicate places. [2024-05-12 13:11:57,564 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 182 transitions, 1653 flow [2024-05-12 13:11:57,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:57,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:11:57,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:11:57,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-05-12 13:11:57,565 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:11:57,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:11:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash -187963552, now seen corresponding path program 1 times [2024-05-12 13:11:57,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:11:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850695135] [2024-05-12 13:11:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:11:57,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:11:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:11:58,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:11:58,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:11:58,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850695135] [2024-05-12 13:11:58,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850695135] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:11:58,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:11:58,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:11:58,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897084169] [2024-05-12 13:11:58,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:11:58,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:11:58,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:11:58,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:11:58,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:11:58,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:11:58,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 182 transitions, 1653 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:11:58,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:11:58,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:11:58,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:11:59,806 INFO L124 PetriNetUnfolderBase]: 4470/7665 cut-off events. [2024-05-12 13:11:59,806 INFO L125 PetriNetUnfolderBase]: For 114878/114896 co-relation queries the response was YES. [2024-05-12 13:11:59,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37660 conditions, 7665 events. 4470/7665 cut-off events. For 114878/114896 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 54054 event pairs, 1434 based on Foata normal form. 1/7470 useless extension candidates. Maximal degree in co-relation 37598. Up to 6477 conditions per place. [2024-05-12 13:11:59,885 INFO L140 encePairwiseOnDemand]: 39/48 looper letters, 180 selfloop transitions, 20 changer transitions 0/215 dead transitions. [2024-05-12 13:11:59,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 215 transitions, 2191 flow [2024-05-12 13:11:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:11:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:11:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 172 transitions. [2024-05-12 13:11:59,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-05-12 13:11:59,886 INFO L175 Difference]: Start difference. First operand has 150 places, 182 transitions, 1653 flow. Second operand 7 states and 172 transitions. [2024-05-12 13:11:59,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 215 transitions, 2191 flow [2024-05-12 13:12:00,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 215 transitions, 2121 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:00,032 INFO L231 Difference]: Finished difference. Result has 154 places, 185 transitions, 1677 flow [2024-05-12 13:12:00,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1677, PETRI_PLACES=154, PETRI_TRANSITIONS=185} [2024-05-12 13:12:00,033 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 100 predicate places. [2024-05-12 13:12:00,033 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 185 transitions, 1677 flow [2024-05-12 13:12:00,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:00,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:00,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:00,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-05-12 13:12:00,034 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:00,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:00,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2082541415, now seen corresponding path program 1 times [2024-05-12 13:12:00,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:00,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261961469] [2024-05-12 13:12:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:00,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:00,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:00,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261961469] [2024-05-12 13:12:00,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261961469] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:00,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:00,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405600292] [2024-05-12 13:12:00,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:00,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:00,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:00,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:01,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:01,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 185 transitions, 1677 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:01,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:01,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:01,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:02,176 INFO L124 PetriNetUnfolderBase]: 4486/7692 cut-off events. [2024-05-12 13:12:02,176 INFO L125 PetriNetUnfolderBase]: For 122797/122815 co-relation queries the response was YES. [2024-05-12 13:12:02,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38543 conditions, 7692 events. 4486/7692 cut-off events. For 122797/122815 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 54236 event pairs, 1437 based on Foata normal form. 4/7502 useless extension candidates. Maximal degree in co-relation 38479. Up to 6489 conditions per place. [2024-05-12 13:12:02,241 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 183 selfloop transitions, 17 changer transitions 0/215 dead transitions. [2024-05-12 13:12:02,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 215 transitions, 2209 flow [2024-05-12 13:12:02,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:02,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-05-12 13:12:02,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-05-12 13:12:02,242 INFO L175 Difference]: Start difference. First operand has 154 places, 185 transitions, 1677 flow. Second operand 7 states and 169 transitions. [2024-05-12 13:12:02,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 215 transitions, 2209 flow [2024-05-12 13:12:02,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 215 transitions, 2137 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-05-12 13:12:02,393 INFO L231 Difference]: Finished difference. Result has 156 places, 189 transitions, 1698 flow [2024-05-12 13:12:02,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1698, PETRI_PLACES=156, PETRI_TRANSITIONS=189} [2024-05-12 13:12:02,393 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 102 predicate places. [2024-05-12 13:12:02,393 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 189 transitions, 1698 flow [2024-05-12 13:12:02,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:02,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:02,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:02,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-05-12 13:12:02,394 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:02,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:02,394 INFO L85 PathProgramCache]: Analyzing trace with hash -9788355, now seen corresponding path program 2 times [2024-05-12 13:12:02,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:02,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91844889] [2024-05-12 13:12:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:02,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:03,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91844889] [2024-05-12 13:12:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91844889] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:03,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:03,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:03,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975226819] [2024-05-12 13:12:03,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:03,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:03,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:03,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:03,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:03,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 189 transitions, 1698 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:03,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:03,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:03,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:04,792 INFO L124 PetriNetUnfolderBase]: 4559/8029 cut-off events. [2024-05-12 13:12:04,792 INFO L125 PetriNetUnfolderBase]: For 131958/131982 co-relation queries the response was YES. [2024-05-12 13:12:04,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40295 conditions, 8029 events. 4559/8029 cut-off events. For 131958/131982 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 57936 event pairs, 1444 based on Foata normal form. 8/7781 useless extension candidates. Maximal degree in co-relation 40230. Up to 6560 conditions per place. [2024-05-12 13:12:04,866 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 182 selfloop transitions, 22 changer transitions 0/219 dead transitions. [2024-05-12 13:12:04,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 219 transitions, 2256 flow [2024-05-12 13:12:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-05-12 13:12:04,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-05-12 13:12:04,867 INFO L175 Difference]: Start difference. First operand has 156 places, 189 transitions, 1698 flow. Second operand 7 states and 170 transitions. [2024-05-12 13:12:04,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 219 transitions, 2256 flow [2024-05-12 13:12:05,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 219 transitions, 2191 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-05-12 13:12:05,019 INFO L231 Difference]: Finished difference. Result has 158 places, 193 transitions, 1744 flow [2024-05-12 13:12:05,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1633, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1744, PETRI_PLACES=158, PETRI_TRANSITIONS=193} [2024-05-12 13:12:05,020 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 104 predicate places. [2024-05-12 13:12:05,020 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 193 transitions, 1744 flow [2024-05-12 13:12:05,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:05,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:05,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:05,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-05-12 13:12:05,021 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:05,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash -9521445, now seen corresponding path program 3 times [2024-05-12 13:12:05,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:05,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647174636] [2024-05-12 13:12:05,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:05,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:06,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:06,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647174636] [2024-05-12 13:12:06,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647174636] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:06,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:06,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:06,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216436898] [2024-05-12 13:12:06,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:06,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:06,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:06,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:06,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:06,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:06,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 193 transitions, 1744 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:06,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:06,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:06,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:07,264 INFO L124 PetriNetUnfolderBase]: 4558/8040 cut-off events. [2024-05-12 13:12:07,264 INFO L125 PetriNetUnfolderBase]: For 138361/138385 co-relation queries the response was YES. [2024-05-12 13:12:07,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41266 conditions, 8040 events. 4558/8040 cut-off events. For 138361/138385 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 58195 event pairs, 1444 based on Foata normal form. 6/7786 useless extension candidates. Maximal degree in co-relation 41200. Up to 6510 conditions per place. [2024-05-12 13:12:07,339 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 173 selfloop transitions, 33 changer transitions 0/221 dead transitions. [2024-05-12 13:12:07,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 221 transitions, 2288 flow [2024-05-12 13:12:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-05-12 13:12:07,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-05-12 13:12:07,341 INFO L175 Difference]: Start difference. First operand has 158 places, 193 transitions, 1744 flow. Second operand 7 states and 170 transitions. [2024-05-12 13:12:07,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 221 transitions, 2288 flow [2024-05-12 13:12:07,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 221 transitions, 2205 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-05-12 13:12:07,508 INFO L231 Difference]: Finished difference. Result has 160 places, 196 transitions, 1780 flow [2024-05-12 13:12:07,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1780, PETRI_PLACES=160, PETRI_TRANSITIONS=196} [2024-05-12 13:12:07,509 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 106 predicate places. [2024-05-12 13:12:07,509 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 196 transitions, 1780 flow [2024-05-12 13:12:07,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:07,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:07,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:07,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-05-12 13:12:07,509 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:07,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash -9511525, now seen corresponding path program 1 times [2024-05-12 13:12:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:07,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116145282] [2024-05-12 13:12:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:07,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:08,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:08,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:08,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116145282] [2024-05-12 13:12:08,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116145282] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:08,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:08,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:08,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245117632] [2024-05-12 13:12:08,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:08,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:08,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:08,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:08,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:09,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:09,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 196 transitions, 1780 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:09,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:09,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:10,195 INFO L124 PetriNetUnfolderBase]: 4505/7932 cut-off events. [2024-05-12 13:12:10,195 INFO L125 PetriNetUnfolderBase]: For 143734/143775 co-relation queries the response was YES. [2024-05-12 13:12:10,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41347 conditions, 7932 events. 4505/7932 cut-off events. For 143734/143775 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 57398 event pairs, 1482 based on Foata normal form. 23/7642 useless extension candidates. Maximal degree in co-relation 41280. Up to 6541 conditions per place. [2024-05-12 13:12:10,261 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 184 selfloop transitions, 17 changer transitions 0/223 dead transitions. [2024-05-12 13:12:10,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 223 transitions, 2312 flow [2024-05-12 13:12:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:10,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-05-12 13:12:10,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-05-12 13:12:10,263 INFO L175 Difference]: Start difference. First operand has 160 places, 196 transitions, 1780 flow. Second operand 7 states and 166 transitions. [2024-05-12 13:12:10,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 223 transitions, 2312 flow [2024-05-12 13:12:10,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 223 transitions, 2217 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-05-12 13:12:10,407 INFO L231 Difference]: Finished difference. Result has 162 places, 199 transitions, 1781 flow [2024-05-12 13:12:10,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1685, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1781, PETRI_PLACES=162, PETRI_TRANSITIONS=199} [2024-05-12 13:12:10,407 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 108 predicate places. [2024-05-12 13:12:10,407 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 199 transitions, 1781 flow [2024-05-12 13:12:10,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:10,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:10,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:10,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-05-12 13:12:10,408 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:10,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:10,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2097575869, now seen corresponding path program 1 times [2024-05-12 13:12:10,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:10,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51144093] [2024-05-12 13:12:10,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:10,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:11,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:11,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51144093] [2024-05-12 13:12:11,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51144093] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:11,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:11,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:11,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732177702] [2024-05-12 13:12:11,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:11,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:11,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:11,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:11,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:11,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:12:11,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 199 transitions, 1781 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:11,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:11,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:12:11,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:12,456 INFO L124 PetriNetUnfolderBase]: 4908/8209 cut-off events. [2024-05-12 13:12:12,456 INFO L125 PetriNetUnfolderBase]: For 152608/152618 co-relation queries the response was YES. [2024-05-12 13:12:12,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44012 conditions, 8209 events. 4908/8209 cut-off events. For 152608/152618 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 56679 event pairs, 1565 based on Foata normal form. 10/8022 useless extension candidates. Maximal degree in co-relation 43944. Up to 7099 conditions per place. [2024-05-12 13:12:12,528 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 208 selfloop transitions, 27 changer transitions 0/245 dead transitions. [2024-05-12 13:12:12,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 245 transitions, 2511 flow [2024-05-12 13:12:12,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:12,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 169 transitions. [2024-05-12 13:12:12,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2024-05-12 13:12:12,530 INFO L175 Difference]: Start difference. First operand has 162 places, 199 transitions, 1781 flow. Second operand 7 states and 169 transitions. [2024-05-12 13:12:12,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 245 transitions, 2511 flow [2024-05-12 13:12:12,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 245 transitions, 2417 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-05-12 13:12:12,712 INFO L231 Difference]: Finished difference. Result has 165 places, 213 transitions, 1936 flow [2024-05-12 13:12:12,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1936, PETRI_PLACES=165, PETRI_TRANSITIONS=213} [2024-05-12 13:12:12,712 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 111 predicate places. [2024-05-12 13:12:12,712 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 213 transitions, 1936 flow [2024-05-12 13:12:12,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:12,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:12,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:12,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-05-12 13:12:12,713 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:12,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:12,714 INFO L85 PathProgramCache]: Analyzing trace with hash -708663913, now seen corresponding path program 2 times [2024-05-12 13:12:12,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:12,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099334489] [2024-05-12 13:12:12,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:12,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:13,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:13,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099334489] [2024-05-12 13:12:13,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099334489] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:13,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:13,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:13,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385937864] [2024-05-12 13:12:13,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:13,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:13,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:13,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:13,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:13,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:12:13,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 213 transitions, 1936 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:13,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:13,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:12:13,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:14,790 INFO L124 PetriNetUnfolderBase]: 4982/8331 cut-off events. [2024-05-12 13:12:14,791 INFO L125 PetriNetUnfolderBase]: For 166963/166973 co-relation queries the response was YES. [2024-05-12 13:12:14,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46249 conditions, 8331 events. 4982/8331 cut-off events. For 166963/166973 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 57547 event pairs, 1566 based on Foata normal form. 10/8142 useless extension candidates. Maximal degree in co-relation 46179. Up to 7141 conditions per place. [2024-05-12 13:12:14,874 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 211 selfloop transitions, 33 changer transitions 0/254 dead transitions. [2024-05-12 13:12:14,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 254 transitions, 2753 flow [2024-05-12 13:12:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 170 transitions. [2024-05-12 13:12:14,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2024-05-12 13:12:14,876 INFO L175 Difference]: Start difference. First operand has 165 places, 213 transitions, 1936 flow. Second operand 7 states and 170 transitions. [2024-05-12 13:12:14,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 254 transitions, 2753 flow [2024-05-12 13:12:15,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 254 transitions, 2676 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:15,027 INFO L231 Difference]: Finished difference. Result has 170 places, 221 transitions, 2068 flow [2024-05-12 13:12:15,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1859, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2068, PETRI_PLACES=170, PETRI_TRANSITIONS=221} [2024-05-12 13:12:15,028 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 116 predicate places. [2024-05-12 13:12:15,028 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 221 transitions, 2068 flow [2024-05-12 13:12:15,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:15,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:15,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:15,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-05-12 13:12:15,029 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:15,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:15,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1994241963, now seen corresponding path program 1 times [2024-05-12 13:12:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:15,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808667789] [2024-05-12 13:12:15,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:15,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:16,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:16,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:16,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808667789] [2024-05-12 13:12:16,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808667789] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:16,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:16,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:16,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047688104] [2024-05-12 13:12:16,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:16,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:16,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:16,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:16,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:16,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:16,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 221 transitions, 2068 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:16,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:16,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:16,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:17,422 INFO L124 PetriNetUnfolderBase]: 4663/7874 cut-off events. [2024-05-12 13:12:17,422 INFO L125 PetriNetUnfolderBase]: For 175172/175219 co-relation queries the response was YES. [2024-05-12 13:12:17,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44945 conditions, 7874 events. 4663/7874 cut-off events. For 175172/175219 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 55071 event pairs, 1485 based on Foata normal form. 19/7650 useless extension candidates. Maximal degree in co-relation 44873. Up to 6618 conditions per place. [2024-05-12 13:12:17,501 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 196 selfloop transitions, 32 changer transitions 0/257 dead transitions. [2024-05-12 13:12:17,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 257 transitions, 2698 flow [2024-05-12 13:12:17,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:17,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:17,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-05-12 13:12:17,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-05-12 13:12:17,502 INFO L175 Difference]: Start difference. First operand has 170 places, 221 transitions, 2068 flow. Second operand 8 states and 193 transitions. [2024-05-12 13:12:17,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 257 transitions, 2698 flow [2024-05-12 13:12:17,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 257 transitions, 2625 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:17,713 INFO L231 Difference]: Finished difference. Result has 175 places, 224 transitions, 2117 flow [2024-05-12 13:12:17,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1995, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2117, PETRI_PLACES=175, PETRI_TRANSITIONS=224} [2024-05-12 13:12:17,713 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 121 predicate places. [2024-05-12 13:12:17,713 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 224 transitions, 2117 flow [2024-05-12 13:12:17,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:17,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:17,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:17,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-05-12 13:12:17,714 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:17,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:17,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1539619467, now seen corresponding path program 3 times [2024-05-12 13:12:17,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:17,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422198418] [2024-05-12 13:12:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:17,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:18,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:18,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:18,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422198418] [2024-05-12 13:12:18,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422198418] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:18,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:18,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:18,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355753927] [2024-05-12 13:12:18,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:18,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:18,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:18,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:18,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:18,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:12:18,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 224 transitions, 2117 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:18,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:18,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:12:18,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:19,763 INFO L124 PetriNetUnfolderBase]: 5044/8417 cut-off events. [2024-05-12 13:12:19,764 INFO L125 PetriNetUnfolderBase]: For 185637/185649 co-relation queries the response was YES. [2024-05-12 13:12:19,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48572 conditions, 8417 events. 5044/8417 cut-off events. For 185637/185649 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 58104 event pairs, 1585 based on Foata normal form. 10/8223 useless extension candidates. Maximal degree in co-relation 48498. Up to 7283 conditions per place. [2024-05-12 13:12:19,843 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 218 selfloop transitions, 27 changer transitions 0/255 dead transitions. [2024-05-12 13:12:19,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 255 transitions, 2738 flow [2024-05-12 13:12:19,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-05-12 13:12:19,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-05-12 13:12:19,848 INFO L175 Difference]: Start difference. First operand has 175 places, 224 transitions, 2117 flow. Second operand 7 states and 166 transitions. [2024-05-12 13:12:19,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 255 transitions, 2738 flow [2024-05-12 13:12:20,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 255 transitions, 2604 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-05-12 13:12:20,054 INFO L231 Difference]: Finished difference. Result has 176 places, 225 transitions, 2060 flow [2024-05-12 13:12:20,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=1991, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2060, PETRI_PLACES=176, PETRI_TRANSITIONS=225} [2024-05-12 13:12:20,054 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 122 predicate places. [2024-05-12 13:12:20,054 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 225 transitions, 2060 flow [2024-05-12 13:12:20,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:20,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:20,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:20,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-05-12 13:12:20,055 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:20,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1528161867, now seen corresponding path program 4 times [2024-05-12 13:12:20,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:20,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379834555] [2024-05-12 13:12:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:20,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:20,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:20,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379834555] [2024-05-12 13:12:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379834555] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:20,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343075462] [2024-05-12 13:12:20,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:20,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:20,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:20,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:20,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:20,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:12:20,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 225 transitions, 2060 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:20,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:20,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:12:20,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:22,136 INFO L124 PetriNetUnfolderBase]: 5078/8463 cut-off events. [2024-05-12 13:12:22,136 INFO L125 PetriNetUnfolderBase]: For 189143/189155 co-relation queries the response was YES. [2024-05-12 13:12:22,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48554 conditions, 8463 events. 5078/8463 cut-off events. For 189143/189155 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 58498 event pairs, 1579 based on Foata normal form. 10/8269 useless extension candidates. Maximal degree in co-relation 48479. Up to 7261 conditions per place. [2024-05-12 13:12:22,212 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 213 selfloop transitions, 35 changer transitions 0/258 dead transitions. [2024-05-12 13:12:22,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 258 transitions, 2746 flow [2024-05-12 13:12:22,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:22,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:22,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-05-12 13:12:22,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49404761904761907 [2024-05-12 13:12:22,214 INFO L175 Difference]: Start difference. First operand has 176 places, 225 transitions, 2060 flow. Second operand 7 states and 166 transitions. [2024-05-12 13:12:22,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 258 transitions, 2746 flow [2024-05-12 13:12:22,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 258 transitions, 2702 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:22,418 INFO L231 Difference]: Finished difference. Result has 180 places, 228 transitions, 2156 flow [2024-05-12 13:12:22,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2016, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2156, PETRI_PLACES=180, PETRI_TRANSITIONS=228} [2024-05-12 13:12:22,419 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 126 predicate places. [2024-05-12 13:12:22,419 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 228 transitions, 2156 flow [2024-05-12 13:12:22,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:22,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:22,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:22,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-05-12 13:12:22,420 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:22,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:22,420 INFO L85 PathProgramCache]: Analyzing trace with hash -309166603, now seen corresponding path program 5 times [2024-05-12 13:12:22,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:22,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921408771] [2024-05-12 13:12:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:22,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:22,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921408771] [2024-05-12 13:12:23,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921408771] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:23,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:23,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:23,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708219025] [2024-05-12 13:12:23,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:23,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:23,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:23,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:12:23,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 228 transitions, 2156 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:23,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:23,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:12:23,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:24,577 INFO L124 PetriNetUnfolderBase]: 5137/8843 cut-off events. [2024-05-12 13:12:24,577 INFO L125 PetriNetUnfolderBase]: For 205511/205529 co-relation queries the response was YES. [2024-05-12 13:12:24,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50582 conditions, 8843 events. 5137/8843 cut-off events. For 205511/205529 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 62985 event pairs, 1553 based on Foata normal form. 14/8572 useless extension candidates. Maximal degree in co-relation 50505. Up to 7211 conditions per place. [2024-05-12 13:12:24,665 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 207 selfloop transitions, 50 changer transitions 0/267 dead transitions. [2024-05-12 13:12:24,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 267 transitions, 3041 flow [2024-05-12 13:12:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-05-12 13:12:24,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:12:24,666 INFO L175 Difference]: Start difference. First operand has 180 places, 228 transitions, 2156 flow. Second operand 7 states and 168 transitions. [2024-05-12 13:12:24,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 267 transitions, 3041 flow [2024-05-12 13:12:24,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 267 transitions, 2927 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-05-12 13:12:24,916 INFO L231 Difference]: Finished difference. Result has 183 places, 236 transitions, 2308 flow [2024-05-12 13:12:24,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2042, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2308, PETRI_PLACES=183, PETRI_TRANSITIONS=236} [2024-05-12 13:12:24,916 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 129 predicate places. [2024-05-12 13:12:24,916 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 236 transitions, 2308 flow [2024-05-12 13:12:24,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:24,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:24,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:24,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-05-12 13:12:24,917 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:24,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash -303452683, now seen corresponding path program 6 times [2024-05-12 13:12:24,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:24,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949020303] [2024-05-12 13:12:24,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:24,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:25,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:25,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949020303] [2024-05-12 13:12:25,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949020303] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:25,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:25,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-05-12 13:12:25,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484122628] [2024-05-12 13:12:25,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:25,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-05-12 13:12:25,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:25,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-05-12 13:12:25,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-05-12 13:12:25,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:12:25,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 236 transitions, 2308 flow. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:25,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:25,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:12:25,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:27,120 INFO L124 PetriNetUnfolderBase]: 5131/8839 cut-off events. [2024-05-12 13:12:27,121 INFO L125 PetriNetUnfolderBase]: For 215726/215744 co-relation queries the response was YES. [2024-05-12 13:12:27,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51334 conditions, 8839 events. 5131/8839 cut-off events. For 215726/215744 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 63070 event pairs, 1557 based on Foata normal form. 14/8568 useless extension candidates. Maximal degree in co-relation 51255. Up to 7206 conditions per place. [2024-05-12 13:12:27,210 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 206 selfloop transitions, 51 changer transitions 0/267 dead transitions. [2024-05-12 13:12:27,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 267 transitions, 2991 flow [2024-05-12 13:12:27,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-05-12 13:12:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-05-12 13:12:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 167 transitions. [2024-05-12 13:12:27,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2024-05-12 13:12:27,211 INFO L175 Difference]: Start difference. First operand has 183 places, 236 transitions, 2308 flow. Second operand 7 states and 167 transitions. [2024-05-12 13:12:27,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 267 transitions, 2991 flow [2024-05-12 13:12:27,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 267 transitions, 2799 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:27,448 INFO L231 Difference]: Finished difference. Result has 186 places, 237 transitions, 2245 flow [2024-05-12 13:12:27,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2245, PETRI_PLACES=186, PETRI_TRANSITIONS=237} [2024-05-12 13:12:27,448 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 132 predicate places. [2024-05-12 13:12:27,448 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 237 transitions, 2245 flow [2024-05-12 13:12:27,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 8 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:27,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:27,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:27,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-05-12 13:12:27,449 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:27,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:27,450 INFO L85 PathProgramCache]: Analyzing trace with hash -295348105, now seen corresponding path program 2 times [2024-05-12 13:12:27,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:27,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255777116] [2024-05-12 13:12:27,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:27,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:28,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:28,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:28,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255777116] [2024-05-12 13:12:28,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255777116] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:28,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:28,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:28,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273498954] [2024-05-12 13:12:28,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:28,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:28,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:28,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:28,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:28,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:28,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 237 transitions, 2245 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:28,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:28,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:28,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:30,138 INFO L124 PetriNetUnfolderBase]: 4821/8217 cut-off events. [2024-05-12 13:12:30,138 INFO L125 PetriNetUnfolderBase]: For 209408/209451 co-relation queries the response was YES. [2024-05-12 13:12:30,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48138 conditions, 8217 events. 4821/8217 cut-off events. For 209408/209451 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 58364 event pairs, 1492 based on Foata normal form. 21/7949 useless extension candidates. Maximal degree in co-relation 48058. Up to 6725 conditions per place. [2024-05-12 13:12:30,228 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 190 selfloop transitions, 55 changer transitions 0/279 dead transitions. [2024-05-12 13:12:30,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 279 transitions, 3205 flow [2024-05-12 13:12:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:30,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:30,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:12:30,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-05-12 13:12:30,230 INFO L175 Difference]: Start difference. First operand has 186 places, 237 transitions, 2245 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:12:30,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 279 transitions, 3205 flow [2024-05-12 13:12:30,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 279 transitions, 3124 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:30,512 INFO L231 Difference]: Finished difference. Result has 191 places, 248 transitions, 2487 flow [2024-05-12 13:12:30,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2487, PETRI_PLACES=191, PETRI_TRANSITIONS=248} [2024-05-12 13:12:30,513 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 137 predicate places. [2024-05-12 13:12:30,513 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 248 transitions, 2487 flow [2024-05-12 13:12:30,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:30,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:30,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:30,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-05-12 13:12:30,514 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:30,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:30,514 INFO L85 PathProgramCache]: Analyzing trace with hash -294872875, now seen corresponding path program 3 times [2024-05-12 13:12:30,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:30,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940753624] [2024-05-12 13:12:30,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:30,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:31,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:31,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940753624] [2024-05-12 13:12:31,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940753624] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:31,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:31,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:31,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011781808] [2024-05-12 13:12:31,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:31,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:31,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:31,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:31,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:31,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:31,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 248 transitions, 2487 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:31,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:31,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:31,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:33,185 INFO L124 PetriNetUnfolderBase]: 4812/8233 cut-off events. [2024-05-12 13:12:33,185 INFO L125 PetriNetUnfolderBase]: For 219340/219383 co-relation queries the response was YES. [2024-05-12 13:12:33,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49038 conditions, 8233 events. 4812/8233 cut-off events. For 219340/219383 co-relation queries the response was YES. Maximal size of possible extension queue 390. Compared 58702 event pairs, 1510 based on Foata normal form. 18/7975 useless extension candidates. Maximal degree in co-relation 48956. Up to 6908 conditions per place. [2024-05-12 13:12:33,286 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 225 selfloop transitions, 18 changer transitions 0/277 dead transitions. [2024-05-12 13:12:33,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 277 transitions, 3089 flow [2024-05-12 13:12:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:33,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:33,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-05-12 13:12:33,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-05-12 13:12:33,287 INFO L175 Difference]: Start difference. First operand has 191 places, 248 transitions, 2487 flow. Second operand 8 states and 187 transitions. [2024-05-12 13:12:33,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 277 transitions, 3089 flow [2024-05-12 13:12:33,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 277 transitions, 2952 flow, removed 49 selfloop flow, removed 3 redundant places. [2024-05-12 13:12:33,609 INFO L231 Difference]: Finished difference. Result has 196 places, 248 transitions, 2392 flow [2024-05-12 13:12:33,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2350, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2392, PETRI_PLACES=196, PETRI_TRANSITIONS=248} [2024-05-12 13:12:33,609 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 142 predicate places. [2024-05-12 13:12:33,609 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 248 transitions, 2392 flow [2024-05-12 13:12:33,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:33,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:33,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:33,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-05-12 13:12:33,610 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:33,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:33,610 INFO L85 PathProgramCache]: Analyzing trace with hash -309157675, now seen corresponding path program 4 times [2024-05-12 13:12:33,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:33,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070783529] [2024-05-12 13:12:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:33,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:34,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:34,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070783529] [2024-05-12 13:12:34,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070783529] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:34,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:34,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:34,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882273446] [2024-05-12 13:12:34,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:34,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:34,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:34,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:34,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:34,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:34,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 248 transitions, 2392 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:34,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:34,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:34,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:36,064 INFO L124 PetriNetUnfolderBase]: 4824/8215 cut-off events. [2024-05-12 13:12:36,064 INFO L125 PetriNetUnfolderBase]: For 222911/222942 co-relation queries the response was YES. [2024-05-12 13:12:36,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48910 conditions, 8215 events. 4824/8215 cut-off events. For 222911/222942 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 58406 event pairs, 1493 based on Foata normal form. 12/7940 useless extension candidates. Maximal degree in co-relation 48826. Up to 6814 conditions per place. [2024-05-12 13:12:36,153 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 206 selfloop transitions, 41 changer transitions 0/281 dead transitions. [2024-05-12 13:12:36,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 281 transitions, 3071 flow [2024-05-12 13:12:36,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:36,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:12:36,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-05-12 13:12:36,154 INFO L175 Difference]: Start difference. First operand has 196 places, 248 transitions, 2392 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:12:36,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 281 transitions, 3071 flow [2024-05-12 13:12:36,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 281 transitions, 2989 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-05-12 13:12:36,480 INFO L231 Difference]: Finished difference. Result has 197 places, 251 transitions, 2468 flow [2024-05-12 13:12:36,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2316, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2468, PETRI_PLACES=197, PETRI_TRANSITIONS=251} [2024-05-12 13:12:36,481 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 143 predicate places. [2024-05-12 13:12:36,481 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 251 transitions, 2468 flow [2024-05-12 13:12:36,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:36,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:36,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:36,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-05-12 13:12:36,481 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:36,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:36,482 INFO L85 PathProgramCache]: Analyzing trace with hash 134095889, now seen corresponding path program 1 times [2024-05-12 13:12:36,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:36,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470685009] [2024-05-12 13:12:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:37,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:37,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470685009] [2024-05-12 13:12:37,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470685009] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:37,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:37,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551693103] [2024-05-12 13:12:37,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:37,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:37,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:37,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:37,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:37,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:37,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 251 transitions, 2468 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:37,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:37,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:37,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:39,290 INFO L124 PetriNetUnfolderBase]: 4856/8208 cut-off events. [2024-05-12 13:12:39,291 INFO L125 PetriNetUnfolderBase]: For 229611/229622 co-relation queries the response was YES. [2024-05-12 13:12:39,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50512 conditions, 8208 events. 4856/8208 cut-off events. For 229611/229622 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 57414 event pairs, 1458 based on Foata normal form. 2/8022 useless extension candidates. Maximal degree in co-relation 50427. Up to 6995 conditions per place. [2024-05-12 13:12:39,394 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 257 selfloop transitions, 20 changer transitions 0/292 dead transitions. [2024-05-12 13:12:39,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 292 transitions, 3245 flow [2024-05-12 13:12:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:12:39,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-05-12 13:12:39,396 INFO L175 Difference]: Start difference. First operand has 197 places, 251 transitions, 2468 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:12:39,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 292 transitions, 3245 flow [2024-05-12 13:12:39,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 292 transitions, 3111 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-05-12 13:12:39,756 INFO L231 Difference]: Finished difference. Result has 201 places, 261 transitions, 2524 flow [2024-05-12 13:12:39,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2524, PETRI_PLACES=201, PETRI_TRANSITIONS=261} [2024-05-12 13:12:39,756 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 147 predicate places. [2024-05-12 13:12:39,756 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 261 transitions, 2524 flow [2024-05-12 13:12:39,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:39,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:39,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:39,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-05-12 13:12:39,757 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:39,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:39,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1009799999, now seen corresponding path program 2 times [2024-05-12 13:12:39,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:39,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484893970] [2024-05-12 13:12:39,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:39,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:41,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:41,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484893970] [2024-05-12 13:12:41,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484893970] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:41,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:41,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:41,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126049205] [2024-05-12 13:12:41,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:41,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:41,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:41,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:41,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:41,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:41,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 261 transitions, 2524 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:41,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:41,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:41,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:42,690 INFO L124 PetriNetUnfolderBase]: 4932/8328 cut-off events. [2024-05-12 13:12:42,690 INFO L125 PetriNetUnfolderBase]: For 246585/246602 co-relation queries the response was YES. [2024-05-12 13:12:42,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52272 conditions, 8328 events. 4932/8328 cut-off events. For 246585/246602 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 58462 event pairs, 1452 based on Foata normal form. 16/8149 useless extension candidates. Maximal degree in co-relation 52184. Up to 7036 conditions per place. [2024-05-12 13:12:42,772 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 262 selfloop transitions, 24 changer transitions 0/301 dead transitions. [2024-05-12 13:12:42,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 301 transitions, 3476 flow [2024-05-12 13:12:42,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:42,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:12:42,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-05-12 13:12:42,773 INFO L175 Difference]: Start difference. First operand has 201 places, 261 transitions, 2524 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:12:42,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 301 transitions, 3476 flow [2024-05-12 13:12:43,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 301 transitions, 3381 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:43,171 INFO L231 Difference]: Finished difference. Result has 206 places, 269 transitions, 2658 flow [2024-05-12 13:12:43,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2658, PETRI_PLACES=206, PETRI_TRANSITIONS=269} [2024-05-12 13:12:43,171 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 152 predicate places. [2024-05-12 13:12:43,172 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 269 transitions, 2658 flow [2024-05-12 13:12:43,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:43,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:43,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:43,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-05-12 13:12:43,172 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:43,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash -295163841, now seen corresponding path program 3 times [2024-05-12 13:12:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:43,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681183018] [2024-05-12 13:12:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:43,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:44,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:44,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:44,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681183018] [2024-05-12 13:12:44,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681183018] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:44,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:44,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:44,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282496856] [2024-05-12 13:12:44,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:44,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:44,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:44,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:44,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:44,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:44,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 269 transitions, 2658 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:44,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:44,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:44,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:46,554 INFO L124 PetriNetUnfolderBase]: 5016/8806 cut-off events. [2024-05-12 13:12:46,554 INFO L125 PetriNetUnfolderBase]: For 269442/269481 co-relation queries the response was YES. [2024-05-12 13:12:46,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54889 conditions, 8806 events. 5016/8806 cut-off events. For 269442/269481 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 64484 event pairs, 1447 based on Foata normal form. 7/8508 useless extension candidates. Maximal degree in co-relation 54799. Up to 7097 conditions per place. [2024-05-12 13:12:46,655 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 253 selfloop transitions, 40 changer transitions 0/308 dead transitions. [2024-05-12 13:12:46,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 308 transitions, 3694 flow [2024-05-12 13:12:46,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-05-12 13:12:46,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-05-12 13:12:46,657 INFO L175 Difference]: Start difference. First operand has 206 places, 269 transitions, 2658 flow. Second operand 8 states and 193 transitions. [2024-05-12 13:12:46,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 308 transitions, 3694 flow [2024-05-12 13:12:47,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 308 transitions, 3546 flow, removed 66 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:47,086 INFO L231 Difference]: Finished difference. Result has 211 places, 277 transitions, 2840 flow [2024-05-12 13:12:47,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2840, PETRI_PLACES=211, PETRI_TRANSITIONS=277} [2024-05-12 13:12:47,087 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 157 predicate places. [2024-05-12 13:12:47,087 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 277 transitions, 2840 flow [2024-05-12 13:12:47,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:47,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:47,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:47,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-05-12 13:12:47,088 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:47,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2007512329, now seen corresponding path program 4 times [2024-05-12 13:12:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:47,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844469602] [2024-05-12 13:12:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:47,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:48,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:48,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:48,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844469602] [2024-05-12 13:12:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844469602] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:48,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:48,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235904433] [2024-05-12 13:12:48,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:48,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:48,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:48,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:48,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:48,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 277 transitions, 2840 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:48,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:48,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:50,259 INFO L124 PetriNetUnfolderBase]: 5011/8770 cut-off events. [2024-05-12 13:12:50,259 INFO L125 PetriNetUnfolderBase]: For 278038/278067 co-relation queries the response was YES. [2024-05-12 13:12:50,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55502 conditions, 8770 events. 5011/8770 cut-off events. For 278038/278067 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 63985 event pairs, 1444 based on Foata normal form. 7/8483 useless extension candidates. Maximal degree in co-relation 55409. Up to 7165 conditions per place. [2024-05-12 13:12:50,361 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 268 selfloop transitions, 25 changer transitions 0/308 dead transitions. [2024-05-12 13:12:50,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 308 transitions, 3578 flow [2024-05-12 13:12:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:50,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:12:50,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:12:50,363 INFO L175 Difference]: Start difference. First operand has 211 places, 277 transitions, 2840 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:12:50,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 308 transitions, 3578 flow [2024-05-12 13:12:50,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 308 transitions, 3439 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-05-12 13:12:50,823 INFO L231 Difference]: Finished difference. Result has 215 places, 277 transitions, 2757 flow [2024-05-12 13:12:50,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2701, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2757, PETRI_PLACES=215, PETRI_TRANSITIONS=277} [2024-05-12 13:12:50,824 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 161 predicate places. [2024-05-12 13:12:50,824 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 277 transitions, 2757 flow [2024-05-12 13:12:50,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:50,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:50,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:50,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-05-12 13:12:50,825 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:50,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:50,825 INFO L85 PathProgramCache]: Analyzing trace with hash -294856011, now seen corresponding path program 1 times [2024-05-12 13:12:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:50,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393864896] [2024-05-12 13:12:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:50,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:52,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:52,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393864896] [2024-05-12 13:12:52,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393864896] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:52,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:52,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:12:52,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739912220] [2024-05-12 13:12:52,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:52,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:12:52,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:52,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:12:52,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:12:52,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:12:52,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 277 transitions, 2757 flow. Second operand has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:52,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:52,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:12:52,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:54,396 INFO L124 PetriNetUnfolderBase]: 4963/8688 cut-off events. [2024-05-12 13:12:54,396 INFO L125 PetriNetUnfolderBase]: For 277739/277772 co-relation queries the response was YES. [2024-05-12 13:12:54,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54548 conditions, 8688 events. 4963/8688 cut-off events. For 277739/277772 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 63575 event pairs, 1534 based on Foata normal form. 13/8375 useless extension candidates. Maximal degree in co-relation 54453. Up to 7098 conditions per place. [2024-05-12 13:12:54,516 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 260 selfloop transitions, 20 changer transitions 0/314 dead transitions. [2024-05-12 13:12:54,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 314 transitions, 3529 flow [2024-05-12 13:12:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:12:54,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:12:54,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 209 transitions. [2024-05-12 13:12:54,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837962962962963 [2024-05-12 13:12:54,517 INFO L175 Difference]: Start difference. First operand has 215 places, 277 transitions, 2757 flow. Second operand 9 states and 209 transitions. [2024-05-12 13:12:54,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 314 transitions, 3529 flow [2024-05-12 13:12:54,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 314 transitions, 3457 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 13:12:54,928 INFO L231 Difference]: Finished difference. Result has 218 places, 279 transitions, 2796 flow [2024-05-12 13:12:54,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2796, PETRI_PLACES=218, PETRI_TRANSITIONS=279} [2024-05-12 13:12:54,928 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 164 predicate places. [2024-05-12 13:12:54,928 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 279 transitions, 2796 flow [2024-05-12 13:12:54,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:54,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:54,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:54,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-05-12 13:12:54,929 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:54,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:54,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1875056899, now seen corresponding path program 1 times [2024-05-12 13:12:54,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:54,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922343115] [2024-05-12 13:12:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:54,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:54,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:55,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:55,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922343115] [2024-05-12 13:12:55,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922343115] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:55,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:55,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:55,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858908272] [2024-05-12 13:12:55,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:55,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:55,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:55,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:55,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:55,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:12:55,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 279 transitions, 2796 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:55,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:55,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:12:55,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:12:57,547 INFO L124 PetriNetUnfolderBase]: 5444/9010 cut-off events. [2024-05-12 13:12:57,547 INFO L125 PetriNetUnfolderBase]: For 291745/291749 co-relation queries the response was YES. [2024-05-12 13:12:57,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58325 conditions, 9010 events. 5444/9010 cut-off events. For 291745/291749 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 62197 event pairs, 1641 based on Foata normal form. 6/8815 useless extension candidates. Maximal degree in co-relation 58229. Up to 7795 conditions per place. [2024-05-12 13:12:57,657 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 286 selfloop transitions, 32 changer transitions 0/328 dead transitions. [2024-05-12 13:12:57,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 328 transitions, 3724 flow [2024-05-12 13:12:57,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:12:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:12:57,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 193 transitions. [2024-05-12 13:12:57,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5026041666666666 [2024-05-12 13:12:57,659 INFO L175 Difference]: Start difference. First operand has 218 places, 279 transitions, 2796 flow. Second operand 8 states and 193 transitions. [2024-05-12 13:12:57,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 328 transitions, 3724 flow [2024-05-12 13:12:58,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 328 transitions, 3623 flow, removed 31 selfloop flow, removed 7 redundant places. [2024-05-12 13:12:58,107 INFO L231 Difference]: Finished difference. Result has 220 places, 288 transitions, 2935 flow [2024-05-12 13:12:58,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2695, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2935, PETRI_PLACES=220, PETRI_TRANSITIONS=288} [2024-05-12 13:12:58,108 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 166 predicate places. [2024-05-12 13:12:58,108 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 288 transitions, 2935 flow [2024-05-12 13:12:58,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:58,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:12:58,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:12:58,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-05-12 13:12:58,109 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:12:58,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:12:58,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1980135739, now seen corresponding path program 2 times [2024-05-12 13:12:58,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:12:58,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257166262] [2024-05-12 13:12:58,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:12:58,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:12:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:12:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:12:58,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:12:58,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257166262] [2024-05-12 13:12:58,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257166262] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:12:58,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:12:58,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:12:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779799750] [2024-05-12 13:12:58,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:12:58,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:12:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:12:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:12:58,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:12:59,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:12:59,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 288 transitions, 2935 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:12:59,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:12:59,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:12:59,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:00,595 INFO L124 PetriNetUnfolderBase]: 5495/9093 cut-off events. [2024-05-12 13:13:00,596 INFO L125 PetriNetUnfolderBase]: For 309055/309059 co-relation queries the response was YES. [2024-05-12 13:13:00,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60041 conditions, 9093 events. 5495/9093 cut-off events. For 309055/309059 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 62828 event pairs, 1647 based on Foata normal form. 6/8897 useless extension candidates. Maximal degree in co-relation 59943. Up to 7825 conditions per place. [2024-05-12 13:13:00,700 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 292 selfloop transitions, 38 changer transitions 0/340 dead transitions. [2024-05-12 13:13:00,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 340 transitions, 3893 flow [2024-05-12 13:13:00,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:00,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 216 transitions. [2024-05-12 13:13:00,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:13:00,701 INFO L175 Difference]: Start difference. First operand has 220 places, 288 transitions, 2935 flow. Second operand 9 states and 216 transitions. [2024-05-12 13:13:00,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 340 transitions, 3893 flow [2024-05-12 13:13:01,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 340 transitions, 3741 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:01,175 INFO L231 Difference]: Finished difference. Result has 224 places, 294 transitions, 2994 flow [2024-05-12 13:13:01,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2783, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2994, PETRI_PLACES=224, PETRI_TRANSITIONS=294} [2024-05-12 13:13:01,175 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 170 predicate places. [2024-05-12 13:13:01,176 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 294 transitions, 2994 flow [2024-05-12 13:13:01,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:01,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:01,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:01,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-05-12 13:13:01,176 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:01,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash 973288101, now seen corresponding path program 1 times [2024-05-12 13:13:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:01,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116396113] [2024-05-12 13:13:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:01,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:01,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116396113] [2024-05-12 13:13:01,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116396113] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:01,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:01,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:01,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473196724] [2024-05-12 13:13:01,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:01,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:01,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:02,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:02,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 294 transitions, 2994 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:02,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:02,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:02,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:03,663 INFO L124 PetriNetUnfolderBase]: 5523/9126 cut-off events. [2024-05-12 13:13:03,663 INFO L125 PetriNetUnfolderBase]: For 325874/325878 co-relation queries the response was YES. [2024-05-12 13:13:03,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61226 conditions, 9126 events. 5523/9126 cut-off events. For 325874/325878 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62972 event pairs, 1396 based on Foata normal form. 6/8926 useless extension candidates. Maximal degree in co-relation 61127. Up to 7883 conditions per place. [2024-05-12 13:13:03,769 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 302 selfloop transitions, 28 changer transitions 0/340 dead transitions. [2024-05-12 13:13:03,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 340 transitions, 3878 flow [2024-05-12 13:13:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:03,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:13:03,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:13:03,770 INFO L175 Difference]: Start difference. First operand has 224 places, 294 transitions, 2994 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:13:03,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 340 transitions, 3878 flow [2024-05-12 13:13:04,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 340 transitions, 3741 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:04,244 INFO L231 Difference]: Finished difference. Result has 227 places, 299 transitions, 3016 flow [2024-05-12 13:13:04,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2857, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3016, PETRI_PLACES=227, PETRI_TRANSITIONS=299} [2024-05-12 13:13:04,244 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 173 predicate places. [2024-05-12 13:13:04,245 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 299 transitions, 3016 flow [2024-05-12 13:13:04,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:04,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:04,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:04,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-05-12 13:13:04,245 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:04,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:04,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2112718407, now seen corresponding path program 2 times [2024-05-12 13:13:04,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:04,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119595601] [2024-05-12 13:13:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:04,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:05,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:05,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119595601] [2024-05-12 13:13:05,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119595601] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:05,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:05,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:05,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048222645] [2024-05-12 13:13:05,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:05,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:05,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:05,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:05,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:05,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:05,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 299 transitions, 3016 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:05,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:05,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:05,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:06,838 INFO L124 PetriNetUnfolderBase]: 5551/9171 cut-off events. [2024-05-12 13:13:06,838 INFO L125 PetriNetUnfolderBase]: For 337140/337144 co-relation queries the response was YES. [2024-05-12 13:13:06,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62061 conditions, 9171 events. 5551/9171 cut-off events. For 337140/337144 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 63381 event pairs, 1645 based on Foata normal form. 6/8975 useless extension candidates. Maximal degree in co-relation 61960. Up to 7962 conditions per place. [2024-05-12 13:13:06,960 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 302 selfloop transitions, 28 changer transitions 0/340 dead transitions. [2024-05-12 13:13:06,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 340 transitions, 3888 flow [2024-05-12 13:13:06,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:06,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:06,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:13:06,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-05-12 13:13:06,962 INFO L175 Difference]: Start difference. First operand has 227 places, 299 transitions, 3016 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:13:06,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 340 transitions, 3888 flow [2024-05-12 13:13:07,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 340 transitions, 3775 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-05-12 13:13:07,554 INFO L231 Difference]: Finished difference. Result has 230 places, 301 transitions, 3028 flow [2024-05-12 13:13:07,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3028, PETRI_PLACES=230, PETRI_TRANSITIONS=301} [2024-05-12 13:13:07,555 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 176 predicate places. [2024-05-12 13:13:07,555 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 301 transitions, 3028 flow [2024-05-12 13:13:07,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:07,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:07,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:07,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-05-12 13:13:07,555 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:07,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:07,556 INFO L85 PathProgramCache]: Analyzing trace with hash 600043807, now seen corresponding path program 3 times [2024-05-12 13:13:07,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:07,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367297821] [2024-05-12 13:13:07,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:07,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:08,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:08,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:08,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367297821] [2024-05-12 13:13:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367297821] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:08,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:08,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:08,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231921732] [2024-05-12 13:13:08,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:08,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:08,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:08,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:08,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 301 transitions, 3028 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:08,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:08,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:08,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:10,076 INFO L124 PetriNetUnfolderBase]: 5585/9241 cut-off events. [2024-05-12 13:13:10,076 INFO L125 PetriNetUnfolderBase]: For 350011/350022 co-relation queries the response was YES. [2024-05-12 13:13:10,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62800 conditions, 9241 events. 5585/9241 cut-off events. For 350011/350022 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 64120 event pairs, 1658 based on Foata normal form. 8/9041 useless extension candidates. Maximal degree in co-relation 62698. Up to 7922 conditions per place. [2024-05-12 13:13:10,198 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 289 selfloop transitions, 48 changer transitions 0/347 dead transitions. [2024-05-12 13:13:10,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 347 transitions, 4014 flow [2024-05-12 13:13:10,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:13:10,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-05-12 13:13:10,199 INFO L175 Difference]: Start difference. First operand has 230 places, 301 transitions, 3028 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:13:10,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 347 transitions, 4014 flow [2024-05-12 13:13:10,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 347 transitions, 3900 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:10,754 INFO L231 Difference]: Finished difference. Result has 234 places, 312 transitions, 3249 flow [2024-05-12 13:13:10,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=2914, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3249, PETRI_PLACES=234, PETRI_TRANSITIONS=312} [2024-05-12 13:13:10,755 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 180 predicate places. [2024-05-12 13:13:10,755 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 312 transitions, 3249 flow [2024-05-12 13:13:10,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:10,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:10,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:10,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-05-12 13:13:10,755 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:10,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:10,756 INFO L85 PathProgramCache]: Analyzing trace with hash 600222553, now seen corresponding path program 1 times [2024-05-12 13:13:10,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:10,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192735026] [2024-05-12 13:13:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:10,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:11,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:11,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:11,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192735026] [2024-05-12 13:13:11,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192735026] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:11,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:11,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:11,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53903100] [2024-05-12 13:13:11,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:11,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:11,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:11,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:11,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:11,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:11,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 312 transitions, 3249 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:11,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:11,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:11,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:13,700 INFO L124 PetriNetUnfolderBase]: 5667/9396 cut-off events. [2024-05-12 13:13:13,700 INFO L125 PetriNetUnfolderBase]: For 372723/372732 co-relation queries the response was YES. [2024-05-12 13:13:13,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65308 conditions, 9396 events. 5667/9396 cut-off events. For 372723/372732 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 65342 event pairs, 1644 based on Foata normal form. 3/9179 useless extension candidates. Maximal degree in co-relation 65203. Up to 8016 conditions per place. [2024-05-12 13:13:13,827 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 303 selfloop transitions, 64 changer transitions 0/377 dead transitions. [2024-05-12 13:13:13,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 377 transitions, 4527 flow [2024-05-12 13:13:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:13:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:13:13,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-05-12 13:13:13,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-05-12 13:13:13,828 INFO L175 Difference]: Start difference. First operand has 234 places, 312 transitions, 3249 flow. Second operand 9 states and 211 transitions. [2024-05-12 13:13:13,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 377 transitions, 4527 flow [2024-05-12 13:13:14,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 377 transitions, 4339 flow, removed 57 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:14,424 INFO L231 Difference]: Finished difference. Result has 243 places, 334 transitions, 3613 flow [2024-05-12 13:13:14,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3613, PETRI_PLACES=243, PETRI_TRANSITIONS=334} [2024-05-12 13:13:14,424 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 189 predicate places. [2024-05-12 13:13:14,424 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 334 transitions, 3613 flow [2024-05-12 13:13:14,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:14,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:14,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:14,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-05-12 13:13:14,425 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:14,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1175973568, now seen corresponding path program 1 times [2024-05-12 13:13:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775094043] [2024-05-12 13:13:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:15,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:15,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775094043] [2024-05-12 13:13:15,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775094043] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:15,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:15,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244405237] [2024-05-12 13:13:15,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:15,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:15,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:15,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:15,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 334 transitions, 3613 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:15,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:15,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:15,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:17,243 INFO L124 PetriNetUnfolderBase]: 5701/9421 cut-off events. [2024-05-12 13:13:17,243 INFO L125 PetriNetUnfolderBase]: For 388337/388346 co-relation queries the response was YES. [2024-05-12 13:13:17,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66455 conditions, 9421 events. 5701/9421 cut-off events. For 388337/388346 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 65307 event pairs, 1651 based on Foata normal form. 8/9220 useless extension candidates. Maximal degree in co-relation 66345. Up to 8140 conditions per place. [2024-05-12 13:13:17,373 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 324 selfloop transitions, 39 changer transitions 0/373 dead transitions. [2024-05-12 13:13:17,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 373 transitions, 4577 flow [2024-05-12 13:13:17,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:17,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:17,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:13:17,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-05-12 13:13:17,374 INFO L175 Difference]: Start difference. First operand has 243 places, 334 transitions, 3613 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:13:17,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 373 transitions, 4577 flow [2024-05-12 13:13:17,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 373 transitions, 4445 flow, removed 41 selfloop flow, removed 2 redundant places. [2024-05-12 13:13:17,921 INFO L231 Difference]: Finished difference. Result has 249 places, 338 transitions, 3656 flow [2024-05-12 13:13:17,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3481, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3656, PETRI_PLACES=249, PETRI_TRANSITIONS=338} [2024-05-12 13:13:17,921 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 195 predicate places. [2024-05-12 13:13:17,921 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 338 transitions, 3656 flow [2024-05-12 13:13:17,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:17,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:17,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:17,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-05-12 13:13:17,922 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:17,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:17,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1870288789, now seen corresponding path program 4 times [2024-05-12 13:13:17,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:17,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107269637] [2024-05-12 13:13:17,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:17,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:18,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:18,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107269637] [2024-05-12 13:13:18,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107269637] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:18,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:18,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085340727] [2024-05-12 13:13:18,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:18,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:18,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:18,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 338 transitions, 3656 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:18,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:18,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:18,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:20,616 INFO L124 PetriNetUnfolderBase]: 5735/9485 cut-off events. [2024-05-12 13:13:20,616 INFO L125 PetriNetUnfolderBase]: For 403756/403765 co-relation queries the response was YES. [2024-05-12 13:13:20,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68128 conditions, 9485 events. 5735/9485 cut-off events. For 403756/403765 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 65849 event pairs, 1658 based on Foata normal form. 8/9280 useless extension candidates. Maximal degree in co-relation 68016. Up to 8024 conditions per place. [2024-05-12 13:13:20,746 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 304 selfloop transitions, 61 changer transitions 0/375 dead transitions. [2024-05-12 13:13:20,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 375 transitions, 4652 flow [2024-05-12 13:13:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:20,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:20,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:13:20,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-05-12 13:13:20,747 INFO L175 Difference]: Start difference. First operand has 249 places, 338 transitions, 3656 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:13:20,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 375 transitions, 4652 flow [2024-05-12 13:13:21,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 375 transitions, 4505 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:21,482 INFO L231 Difference]: Finished difference. Result has 251 places, 341 transitions, 3747 flow [2024-05-12 13:13:21,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3509, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3747, PETRI_PLACES=251, PETRI_TRANSITIONS=341} [2024-05-12 13:13:21,483 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 197 predicate places. [2024-05-12 13:13:21,483 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 341 transitions, 3747 flow [2024-05-12 13:13:21,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:21,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:21,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:21,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-05-12 13:13:21,484 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:21,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:21,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2123566113, now seen corresponding path program 5 times [2024-05-12 13:13:21,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:21,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518725486] [2024-05-12 13:13:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:21,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:22,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:22,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518725486] [2024-05-12 13:13:22,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518725486] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:22,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:22,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:22,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282183081] [2024-05-12 13:13:22,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:22,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:22,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:22,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:22,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:22,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:22,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 341 transitions, 3747 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:22,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:22,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:22,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:24,225 INFO L124 PetriNetUnfolderBase]: 5849/9663 cut-off events. [2024-05-12 13:13:24,225 INFO L125 PetriNetUnfolderBase]: For 442417/442426 co-relation queries the response was YES. [2024-05-12 13:13:24,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71415 conditions, 9663 events. 5849/9663 cut-off events. For 442417/442426 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 67185 event pairs, 1666 based on Foata normal form. 8/9458 useless extension candidates. Maximal degree in co-relation 71302. Up to 7981 conditions per place. [2024-05-12 13:13:24,366 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 297 selfloop transitions, 79 changer transitions 0/386 dead transitions. [2024-05-12 13:13:24,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 386 transitions, 5261 flow [2024-05-12 13:13:24,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:24,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 196 transitions. [2024-05-12 13:13:24,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5104166666666666 [2024-05-12 13:13:24,367 INFO L175 Difference]: Start difference. First operand has 251 places, 341 transitions, 3747 flow. Second operand 8 states and 196 transitions. [2024-05-12 13:13:24,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 386 transitions, 5261 flow [2024-05-12 13:13:25,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 386 transitions, 5051 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:25,139 INFO L231 Difference]: Finished difference. Result has 253 places, 350 transitions, 4037 flow [2024-05-12 13:13:25,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3537, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4037, PETRI_PLACES=253, PETRI_TRANSITIONS=350} [2024-05-12 13:13:25,139 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 199 predicate places. [2024-05-12 13:13:25,139 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 350 transitions, 4037 flow [2024-05-12 13:13:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:25,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:25,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:25,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-05-12 13:13:25,140 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:25,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1692234306, now seen corresponding path program 2 times [2024-05-12 13:13:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126219144] [2024-05-12 13:13:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126219144] [2024-05-12 13:13:26,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126219144] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:26,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:26,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:26,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922609264] [2024-05-12 13:13:26,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:26,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:26,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:26,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:26,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:26,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:26,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 350 transitions, 4037 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:26,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:26,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:26,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:28,005 INFO L124 PetriNetUnfolderBase]: 5883/9719 cut-off events. [2024-05-12 13:13:28,006 INFO L125 PetriNetUnfolderBase]: For 462963/462972 co-relation queries the response was YES. [2024-05-12 13:13:28,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72608 conditions, 9719 events. 5883/9719 cut-off events. For 462963/462972 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 67556 event pairs, 1663 based on Foata normal form. 8/9511 useless extension candidates. Maximal degree in co-relation 72494. Up to 8327 conditions per place. [2024-05-12 13:13:28,140 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 334 selfloop transitions, 45 changer transitions 0/389 dead transitions. [2024-05-12 13:13:28,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 389 transitions, 5077 flow [2024-05-12 13:13:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:28,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:13:28,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-05-12 13:13:28,141 INFO L175 Difference]: Start difference. First operand has 253 places, 350 transitions, 4037 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:13:28,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 389 transitions, 5077 flow [2024-05-12 13:13:29,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 389 transitions, 4910 flow, removed 60 selfloop flow, removed 3 redundant places. [2024-05-12 13:13:29,012 INFO L231 Difference]: Finished difference. Result has 258 places, 354 transitions, 4069 flow [2024-05-12 13:13:29,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3870, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4069, PETRI_PLACES=258, PETRI_TRANSITIONS=354} [2024-05-12 13:13:29,013 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 204 predicate places. [2024-05-12 13:13:29,013 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 354 transitions, 4069 flow [2024-05-12 13:13:29,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:29,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:29,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:29,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-05-12 13:13:29,014 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:29,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:29,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1692354679, now seen corresponding path program 6 times [2024-05-12 13:13:29,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:29,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661162687] [2024-05-12 13:13:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:29,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:29,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:29,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661162687] [2024-05-12 13:13:29,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661162687] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:29,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:29,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388703675] [2024-05-12 13:13:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:29,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:29,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:29,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:29,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 354 transitions, 4069 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:29,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:29,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:29,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:31,904 INFO L124 PetriNetUnfolderBase]: 5877/9713 cut-off events. [2024-05-12 13:13:31,904 INFO L125 PetriNetUnfolderBase]: For 470463/470463 co-relation queries the response was YES. [2024-05-12 13:13:31,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73378 conditions, 9713 events. 5877/9713 cut-off events. For 470463/470463 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 67618 event pairs, 1673 based on Foata normal form. 2/9497 useless extension candidates. Maximal degree in co-relation 73262. Up to 8368 conditions per place. [2024-05-12 13:13:32,034 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 340 selfloop transitions, 36 changer transitions 0/386 dead transitions. [2024-05-12 13:13:32,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 386 transitions, 4983 flow [2024-05-12 13:13:32,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:32,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:32,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:13:32,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-05-12 13:13:32,036 INFO L175 Difference]: Start difference. First operand has 258 places, 354 transitions, 4069 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:13:32,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 386 transitions, 4983 flow [2024-05-12 13:13:32,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 386 transitions, 4736 flow, removed 81 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:32,808 INFO L231 Difference]: Finished difference. Result has 260 places, 354 transitions, 3900 flow [2024-05-12 13:13:32,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3822, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3900, PETRI_PLACES=260, PETRI_TRANSITIONS=354} [2024-05-12 13:13:32,809 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 206 predicate places. [2024-05-12 13:13:32,809 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 354 transitions, 3900 flow [2024-05-12 13:13:32,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:32,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:32,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:32,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-05-12 13:13:32,810 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:32,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:32,810 INFO L85 PathProgramCache]: Analyzing trace with hash -456981554, now seen corresponding path program 3 times [2024-05-12 13:13:32,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:32,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602602535] [2024-05-12 13:13:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:32,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:33,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:33,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602602535] [2024-05-12 13:13:33,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602602535] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:33,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:33,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:33,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643168174] [2024-05-12 13:13:33,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:33,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:33,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:33,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:33,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:33,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:33,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 354 transitions, 3900 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:33,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:33,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:33,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:35,843 INFO L124 PetriNetUnfolderBase]: 5934/9807 cut-off events. [2024-05-12 13:13:35,843 INFO L125 PetriNetUnfolderBase]: For 478729/478738 co-relation queries the response was YES. [2024-05-12 13:13:35,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73672 conditions, 9807 events. 5934/9807 cut-off events. For 478729/478738 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 68365 event pairs, 1662 based on Foata normal form. 7/9591 useless extension candidates. Maximal degree in co-relation 73555. Up to 8328 conditions per place. [2024-05-12 13:13:36,006 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 331 selfloop transitions, 57 changer transitions 0/398 dead transitions. [2024-05-12 13:13:36,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 398 transitions, 5147 flow [2024-05-12 13:13:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:13:36,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:13:36,007 INFO L175 Difference]: Start difference. First operand has 260 places, 354 transitions, 3900 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:13:36,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 398 transitions, 5147 flow [2024-05-12 13:13:36,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 398 transitions, 5019 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-05-12 13:13:36,774 INFO L231 Difference]: Finished difference. Result has 261 places, 363 transitions, 4095 flow [2024-05-12 13:13:36,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3772, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4095, PETRI_PLACES=261, PETRI_TRANSITIONS=363} [2024-05-12 13:13:36,774 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 207 predicate places. [2024-05-12 13:13:36,774 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 363 transitions, 4095 flow [2024-05-12 13:13:36,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:36,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:36,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:36,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-05-12 13:13:36,775 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:36,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:36,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1168745267, now seen corresponding path program 3 times [2024-05-12 13:13:36,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:36,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696897662] [2024-05-12 13:13:36,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:36,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:36,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:37,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:37,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696897662] [2024-05-12 13:13:37,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696897662] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:37,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:37,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:37,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246490518] [2024-05-12 13:13:37,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:37,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:37,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:37,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:37,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:37,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:37,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 363 transitions, 4095 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:37,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:37,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:37,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:39,614 INFO L124 PetriNetUnfolderBase]: 5962/9852 cut-off events. [2024-05-12 13:13:39,615 INFO L125 PetriNetUnfolderBase]: For 507495/507495 co-relation queries the response was YES. [2024-05-12 13:13:39,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75930 conditions, 9852 events. 5962/9852 cut-off events. For 507495/507495 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 68695 event pairs, 1677 based on Foata normal form. 2/9631 useless extension candidates. Maximal degree in co-relation 75813. Up to 8485 conditions per place. [2024-05-12 13:13:39,749 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 352 selfloop transitions, 35 changer transitions 0/397 dead transitions. [2024-05-12 13:13:39,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 397 transitions, 5087 flow [2024-05-12 13:13:39,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:39,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:39,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 187 transitions. [2024-05-12 13:13:39,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4869791666666667 [2024-05-12 13:13:39,751 INFO L175 Difference]: Start difference. First operand has 261 places, 363 transitions, 4095 flow. Second operand 8 states and 187 transitions. [2024-05-12 13:13:39,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 397 transitions, 5087 flow [2024-05-12 13:13:40,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 397 transitions, 4967 flow, removed 35 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:40,875 INFO L231 Difference]: Finished difference. Result has 265 places, 365 transitions, 4126 flow [2024-05-12 13:13:40,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4126, PETRI_PLACES=265, PETRI_TRANSITIONS=365} [2024-05-12 13:13:40,876 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 211 predicate places. [2024-05-12 13:13:40,876 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 365 transitions, 4126 flow [2024-05-12 13:13:40,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:40,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:40,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:40,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-05-12 13:13:40,877 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:40,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1698514259, now seen corresponding path program 2 times [2024-05-12 13:13:40,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:40,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453187504] [2024-05-12 13:13:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:40,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:40,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:41,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:41,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:41,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453187504] [2024-05-12 13:13:41,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453187504] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:41,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:41,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:41,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347532502] [2024-05-12 13:13:41,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:41,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:41,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:41,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:41,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 365 transitions, 4126 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:41,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:41,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:41,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:44,049 INFO L124 PetriNetUnfolderBase]: 5979/9890 cut-off events. [2024-05-12 13:13:44,049 INFO L125 PetriNetUnfolderBase]: For 519496/519499 co-relation queries the response was YES. [2024-05-12 13:13:44,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76692 conditions, 9890 events. 5979/9890 cut-off events. For 519496/519499 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 69111 event pairs, 1686 based on Foata normal form. 3/9664 useless extension candidates. Maximal degree in co-relation 76573. Up to 8490 conditions per place. [2024-05-12 13:13:44,167 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 354 selfloop transitions, 51 changer transitions 0/415 dead transitions. [2024-05-12 13:13:44,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 415 transitions, 5349 flow [2024-05-12 13:13:44,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:44,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:13:44,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-05-12 13:13:44,168 INFO L175 Difference]: Start difference. First operand has 265 places, 365 transitions, 4126 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:13:44,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 415 transitions, 5349 flow [2024-05-12 13:13:44,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 415 transitions, 5214 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:44,987 INFO L231 Difference]: Finished difference. Result has 269 places, 382 transitions, 4447 flow [2024-05-12 13:13:44,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=3991, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4447, PETRI_PLACES=269, PETRI_TRANSITIONS=382} [2024-05-12 13:13:44,988 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 215 predicate places. [2024-05-12 13:13:44,988 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 382 transitions, 4447 flow [2024-05-12 13:13:44,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:44,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:44,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:44,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-05-12 13:13:44,988 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:44,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:44,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1122628509, now seen corresponding path program 3 times [2024-05-12 13:13:44,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:44,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828594017] [2024-05-12 13:13:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:44,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:45,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:45,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828594017] [2024-05-12 13:13:45,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828594017] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:45,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:45,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:45,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105354024] [2024-05-12 13:13:45,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:45,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:45,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:45,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:45,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:45,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:45,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 382 transitions, 4447 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:45,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:45,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:45,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:47,964 INFO L124 PetriNetUnfolderBase]: 6006/9936 cut-off events. [2024-05-12 13:13:47,964 INFO L125 PetriNetUnfolderBase]: For 547496/547499 co-relation queries the response was YES. [2024-05-12 13:13:48,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78562 conditions, 9936 events. 6006/9936 cut-off events. For 547496/547499 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 69462 event pairs, 1683 based on Foata normal form. 3/9706 useless extension candidates. Maximal degree in co-relation 78440. Up to 8484 conditions per place. [2024-05-12 13:13:48,097 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 352 selfloop transitions, 62 changer transitions 0/424 dead transitions. [2024-05-12 13:13:48,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 424 transitions, 5803 flow [2024-05-12 13:13:48,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:48,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:13:48,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-05-12 13:13:48,098 INFO L175 Difference]: Start difference. First operand has 269 places, 382 transitions, 4447 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:13:48,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 424 transitions, 5803 flow [2024-05-12 13:13:48,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 424 transitions, 5582 flow, removed 73 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:48,979 INFO L231 Difference]: Finished difference. Result has 274 places, 391 transitions, 4637 flow [2024-05-12 13:13:48,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4637, PETRI_PLACES=274, PETRI_TRANSITIONS=391} [2024-05-12 13:13:48,980 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 220 predicate places. [2024-05-12 13:13:48,980 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 391 transitions, 4637 flow [2024-05-12 13:13:48,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:48,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:48,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:48,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-05-12 13:13:48,980 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 883091013, now seen corresponding path program 7 times [2024-05-12 13:13:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317781534] [2024-05-12 13:13:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:49,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:49,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:49,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317781534] [2024-05-12 13:13:49,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317781534] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:49,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:49,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690387954] [2024-05-12 13:13:49,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:49,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:49,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:49,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:49,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:49,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 391 transitions, 4637 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:49,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:49,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:49,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:51,842 INFO L124 PetriNetUnfolderBase]: 6040/9997 cut-off events. [2024-05-12 13:13:51,842 INFO L125 PetriNetUnfolderBase]: For 572262/572262 co-relation queries the response was YES. [2024-05-12 13:13:51,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79938 conditions, 9997 events. 6040/9997 cut-off events. For 572262/572262 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 69942 event pairs, 1710 based on Foata normal form. 2/9761 useless extension candidates. Maximal degree in co-relation 79814. Up to 8515 conditions per place. [2024-05-12 13:13:51,976 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 364 selfloop transitions, 52 changer transitions 0/426 dead transitions. [2024-05-12 13:13:51,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 426 transitions, 5711 flow [2024-05-12 13:13:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:51,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:13:51,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-05-12 13:13:51,977 INFO L175 Difference]: Start difference. First operand has 274 places, 391 transitions, 4637 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:13:51,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 426 transitions, 5711 flow [2024-05-12 13:13:52,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 426 transitions, 5517 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-05-12 13:13:52,898 INFO L231 Difference]: Finished difference. Result has 278 places, 394 transitions, 4665 flow [2024-05-12 13:13:52,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4443, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4665, PETRI_PLACES=278, PETRI_TRANSITIONS=394} [2024-05-12 13:13:52,899 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 224 predicate places. [2024-05-12 13:13:52,899 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 394 transitions, 4665 flow [2024-05-12 13:13:52,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:52,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:52,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:52,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-05-12 13:13:52,900 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:52,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash 883269759, now seen corresponding path program 4 times [2024-05-12 13:13:52,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:52,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507841163] [2024-05-12 13:13:52,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:52,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:53,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:53,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507841163] [2024-05-12 13:13:53,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507841163] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:53,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447693603] [2024-05-12 13:13:53,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:53,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:53,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:53,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:53,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:53,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:53,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 394 transitions, 4665 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:53,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:53,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:53,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:13:55,936 INFO L124 PetriNetUnfolderBase]: 6057/10025 cut-off events. [2024-05-12 13:13:55,936 INFO L125 PetriNetUnfolderBase]: For 577777/577780 co-relation queries the response was YES. [2024-05-12 13:13:56,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80308 conditions, 10025 events. 6057/10025 cut-off events. For 577777/577780 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 70197 event pairs, 1699 based on Foata normal form. 3/9793 useless extension candidates. Maximal degree in co-relation 80182. Up to 8596 conditions per place. [2024-05-12 13:13:56,093 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 371 selfloop transitions, 50 changer transitions 0/431 dead transitions. [2024-05-12 13:13:56,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 431 transitions, 5745 flow [2024-05-12 13:13:56,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:13:56,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:13:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:13:56,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-05-12 13:13:56,095 INFO L175 Difference]: Start difference. First operand has 278 places, 394 transitions, 4665 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:13:56,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 431 transitions, 5745 flow [2024-05-12 13:13:57,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 431 transitions, 5529 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-05-12 13:13:57,160 INFO L231 Difference]: Finished difference. Result has 280 places, 398 transitions, 4673 flow [2024-05-12 13:13:57,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4673, PETRI_PLACES=280, PETRI_TRANSITIONS=398} [2024-05-12 13:13:57,161 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 226 predicate places. [2024-05-12 13:13:57,161 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 398 transitions, 4673 flow [2024-05-12 13:13:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:57,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:13:57,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:13:57,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-05-12 13:13:57,161 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:13:57,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:13:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1257378204, now seen corresponding path program 4 times [2024-05-12 13:13:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:13:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209139518] [2024-05-12 13:13:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:13:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:13:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:13:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:13:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:13:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209139518] [2024-05-12 13:13:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209139518] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:13:58,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:13:58,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:13:58,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021520557] [2024-05-12 13:13:58,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:13:58,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:13:58,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:13:58,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:13:58,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:13:58,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:13:58,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 398 transitions, 4673 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:13:58,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:13:58,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:13:58,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:00,214 INFO L124 PetriNetUnfolderBase]: 6051/10009 cut-off events. [2024-05-12 13:14:00,214 INFO L125 PetriNetUnfolderBase]: For 579400/579403 co-relation queries the response was YES. [2024-05-12 13:14:00,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79765 conditions, 10009 events. 6051/10009 cut-off events. For 579400/579403 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 70143 event pairs, 1687 based on Foata normal form. 4/9780 useless extension candidates. Maximal degree in co-relation 79638. Up to 8620 conditions per place. [2024-05-12 13:14:00,356 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 384 selfloop transitions, 38 changer transitions 0/432 dead transitions. [2024-05-12 13:14:00,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 432 transitions, 5706 flow [2024-05-12 13:14:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 188 transitions. [2024-05-12 13:14:00,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-05-12 13:14:00,357 INFO L175 Difference]: Start difference. First operand has 280 places, 398 transitions, 4673 flow. Second operand 8 states and 188 transitions. [2024-05-12 13:14:00,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 432 transitions, 5706 flow [2024-05-12 13:14:01,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 432 transitions, 5480 flow, removed 79 selfloop flow, removed 4 redundant places. [2024-05-12 13:14:01,406 INFO L231 Difference]: Finished difference. Result has 284 places, 399 transitions, 4555 flow [2024-05-12 13:14:01,406 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4461, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4555, PETRI_PLACES=284, PETRI_TRANSITIONS=399} [2024-05-12 13:14:01,407 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 230 predicate places. [2024-05-12 13:14:01,407 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 399 transitions, 4555 flow [2024-05-12 13:14:01,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:01,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:01,407 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:01,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-05-12 13:14:01,408 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:01,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:01,408 INFO L85 PathProgramCache]: Analyzing trace with hash -483562453, now seen corresponding path program 8 times [2024-05-12 13:14:01,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:01,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920064100] [2024-05-12 13:14:01,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920064100] [2024-05-12 13:14:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920064100] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:02,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:02,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:02,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720081092] [2024-05-12 13:14:02,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:02,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:02,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:02,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:02,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:02,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 399 transitions, 4555 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:02,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:02,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:02,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:04,243 INFO L124 PetriNetUnfolderBase]: 6045/10004 cut-off events. [2024-05-12 13:14:04,244 INFO L125 PetriNetUnfolderBase]: For 579758/579758 co-relation queries the response was YES. [2024-05-12 13:14:04,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79189 conditions, 10004 events. 6045/10004 cut-off events. For 579758/579758 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 70085 event pairs, 1695 based on Foata normal form. 2/9769 useless extension candidates. Maximal degree in co-relation 79061. Up to 8474 conditions per place. [2024-05-12 13:14:04,384 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 364 selfloop transitions, 57 changer transitions 0/431 dead transitions. [2024-05-12 13:14:04,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 431 transitions, 5573 flow [2024-05-12 13:14:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:14:04,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:14:04,385 INFO L175 Difference]: Start difference. First operand has 284 places, 399 transitions, 4555 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:14:04,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 431 transitions, 5573 flow [2024-05-12 13:14:05,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 431 transitions, 5426 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-05-12 13:14:05,420 INFO L231 Difference]: Finished difference. Result has 286 places, 399 transitions, 4528 flow [2024-05-12 13:14:05,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4408, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4528, PETRI_PLACES=286, PETRI_TRANSITIONS=399} [2024-05-12 13:14:05,421 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 232 predicate places. [2024-05-12 13:14:05,421 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 399 transitions, 4528 flow [2024-05-12 13:14:05,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:05,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:05,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:05,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-05-12 13:14:05,421 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:05,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash -127930980, now seen corresponding path program 5 times [2024-05-12 13:14:05,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:05,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943303249] [2024-05-12 13:14:05,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:05,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:06,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943303249] [2024-05-12 13:14:06,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943303249] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:06,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:06,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:06,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396584298] [2024-05-12 13:14:06,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:06,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:06,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:06,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:06,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:06,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 399 transitions, 4528 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:06,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:06,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:06,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:08,849 INFO L124 PetriNetUnfolderBase]: 6119/10089 cut-off events. [2024-05-12 13:14:08,849 INFO L125 PetriNetUnfolderBase]: For 597510/597513 co-relation queries the response was YES. [2024-05-12 13:14:08,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80470 conditions, 10089 events. 6119/10089 cut-off events. For 597510/597513 co-relation queries the response was YES. Maximal size of possible extension queue 459. Compared 70433 event pairs, 1656 based on Foata normal form. 4/9863 useless extension candidates. Maximal degree in co-relation 80341. Up to 8550 conditions per place. [2024-05-12 13:14:08,999 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 373 selfloop transitions, 60 changer transitions 0/443 dead transitions. [2024-05-12 13:14:09,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 443 transitions, 5988 flow [2024-05-12 13:14:09,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:09,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:14:09,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-05-12 13:14:09,001 INFO L175 Difference]: Start difference. First operand has 286 places, 399 transitions, 4528 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:14:09,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 443 transitions, 5988 flow [2024-05-12 13:14:10,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 443 transitions, 5800 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-05-12 13:14:10,261 INFO L231 Difference]: Finished difference. Result has 288 places, 410 transitions, 4770 flow [2024-05-12 13:14:10,261 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4770, PETRI_PLACES=288, PETRI_TRANSITIONS=410} [2024-05-12 13:14:10,262 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 234 predicate places. [2024-05-12 13:14:10,262 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 410 transitions, 4770 flow [2024-05-12 13:14:10,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:10,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:10,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:10,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-05-12 13:14:10,262 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:10,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:10,263 INFO L85 PathProgramCache]: Analyzing trace with hash -473356633, now seen corresponding path program 9 times [2024-05-12 13:14:10,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:10,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956856891] [2024-05-12 13:14:10,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:10,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956856891] [2024-05-12 13:14:11,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956856891] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:11,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:11,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:11,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088633255] [2024-05-12 13:14:11,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:11,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:11,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:11,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:11,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 410 transitions, 4770 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:11,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:11,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:11,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:13,496 INFO L124 PetriNetUnfolderBase]: 6153/10174 cut-off events. [2024-05-12 13:14:13,497 INFO L125 PetriNetUnfolderBase]: For 630370/630370 co-relation queries the response was YES. [2024-05-12 13:14:13,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82986 conditions, 10174 events. 6153/10174 cut-off events. For 630370/630370 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 71348 event pairs, 1683 based on Foata normal form. 2/9933 useless extension candidates. Maximal degree in co-relation 82855. Up to 8448 conditions per place. [2024-05-12 13:14:13,625 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 360 selfloop transitions, 75 changer transitions 0/445 dead transitions. [2024-05-12 13:14:13,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 445 transitions, 6000 flow [2024-05-12 13:14:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:13,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:13,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:14:13,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-05-12 13:14:13,626 INFO L175 Difference]: Start difference. First operand has 288 places, 410 transitions, 4770 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:14:13,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 445 transitions, 6000 flow [2024-05-12 13:14:14,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 445 transitions, 5816 flow, removed 67 selfloop flow, removed 4 redundant places. [2024-05-12 13:14:14,638 INFO L231 Difference]: Finished difference. Result has 292 places, 413 transitions, 4880 flow [2024-05-12 13:14:14,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4586, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4880, PETRI_PLACES=292, PETRI_TRANSITIONS=413} [2024-05-12 13:14:14,639 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 238 predicate places. [2024-05-12 13:14:14,639 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 413 transitions, 4880 flow [2024-05-12 13:14:14,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:14,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:14,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:14,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-05-12 13:14:14,639 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:14,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:14,639 INFO L85 PathProgramCache]: Analyzing trace with hash -128376450, now seen corresponding path program 6 times [2024-05-12 13:14:14,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:14,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993521400] [2024-05-12 13:14:14,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:14,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:14,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:15,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:15,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993521400] [2024-05-12 13:14:15,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993521400] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:15,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:15,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:15,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435520336] [2024-05-12 13:14:15,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:15,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:15,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:15,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:15,777 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 413 transitions, 4880 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:15,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:15,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:15,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:18,026 INFO L124 PetriNetUnfolderBase]: 6147/10155 cut-off events. [2024-05-12 13:14:18,026 INFO L125 PetriNetUnfolderBase]: For 645279/645282 co-relation queries the response was YES. [2024-05-12 13:14:18,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83615 conditions, 10155 events. 6147/10155 cut-off events. For 645279/645282 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 71153 event pairs, 1660 based on Foata normal form. 4/9922 useless extension candidates. Maximal degree in co-relation 83482. Up to 8678 conditions per place. [2024-05-12 13:14:18,155 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 389 selfloop transitions, 48 changer transitions 0/447 dead transitions. [2024-05-12 13:14:18,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 447 transitions, 5983 flow [2024-05-12 13:14:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:14:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:14:18,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-05-12 13:14:18,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699074074074074 [2024-05-12 13:14:18,157 INFO L175 Difference]: Start difference. First operand has 292 places, 413 transitions, 4880 flow. Second operand 9 states and 203 transitions. [2024-05-12 13:14:18,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 447 transitions, 5983 flow [2024-05-12 13:14:19,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 447 transitions, 5651 flow, removed 93 selfloop flow, removed 6 redundant places. [2024-05-12 13:14:19,236 INFO L231 Difference]: Finished difference. Result has 295 places, 414 transitions, 4668 flow [2024-05-12 13:14:19,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4554, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4668, PETRI_PLACES=295, PETRI_TRANSITIONS=414} [2024-05-12 13:14:19,236 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 241 predicate places. [2024-05-12 13:14:19,236 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 414 transitions, 4668 flow [2024-05-12 13:14:19,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:19,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:19,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:19,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-05-12 13:14:19,237 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:19,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash -993962020, now seen corresponding path program 7 times [2024-05-12 13:14:19,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:19,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577932363] [2024-05-12 13:14:19,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:19,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:20,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:20,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577932363] [2024-05-12 13:14:20,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577932363] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:20,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:20,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:20,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490617866] [2024-05-12 13:14:20,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:20,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:20,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:20,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:20,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:20,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:20,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 414 transitions, 4668 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:20,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:20,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:20,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:22,447 INFO L124 PetriNetUnfolderBase]: 6204/10373 cut-off events. [2024-05-12 13:14:22,447 INFO L125 PetriNetUnfolderBase]: For 660791/660803 co-relation queries the response was YES. [2024-05-12 13:14:22,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84005 conditions, 10373 events. 6204/10373 cut-off events. For 660791/660803 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 73926 event pairs, 1577 based on Foata normal form. 9/10096 useless extension candidates. Maximal degree in co-relation 83871. Up to 8566 conditions per place. [2024-05-12 13:14:22,609 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 377 selfloop transitions, 69 changer transitions 0/456 dead transitions. [2024-05-12 13:14:22,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 456 transitions, 6161 flow [2024-05-12 13:14:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:22,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:14:22,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-05-12 13:14:22,610 INFO L175 Difference]: Start difference. First operand has 295 places, 414 transitions, 4668 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:14:22,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 456 transitions, 6161 flow [2024-05-12 13:14:23,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 456 transitions, 6059 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-05-12 13:14:23,767 INFO L231 Difference]: Finished difference. Result has 298 places, 423 transitions, 4959 flow [2024-05-12 13:14:23,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4566, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4959, PETRI_PLACES=298, PETRI_TRANSITIONS=423} [2024-05-12 13:14:23,768 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 244 predicate places. [2024-05-12 13:14:23,768 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 423 transitions, 4959 flow [2024-05-12 13:14:23,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:23,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:23,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:23,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-05-12 13:14:23,769 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:23,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash 196470143, now seen corresponding path program 10 times [2024-05-12 13:14:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:23,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539761447] [2024-05-12 13:14:23,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:23,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:24,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:24,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:24,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539761447] [2024-05-12 13:14:24,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539761447] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:24,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:24,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:24,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472414537] [2024-05-12 13:14:24,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:24,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:24,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:24,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:24,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:24,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:24,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 423 transitions, 4959 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:24,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:24,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:24,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:26,905 INFO L124 PetriNetUnfolderBase]: 6238/10463 cut-off events. [2024-05-12 13:14:26,905 INFO L125 PetriNetUnfolderBase]: For 701597/701597 co-relation queries the response was YES. [2024-05-12 13:14:27,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86743 conditions, 10463 events. 6238/10463 cut-off events. For 701597/701597 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 74930 event pairs, 1638 based on Foata normal form. 2/10168 useless extension candidates. Maximal degree in co-relation 86607. Up to 8828 conditions per place. [2024-05-12 13:14:27,059 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 403 selfloop transitions, 42 changer transitions 0/455 dead transitions. [2024-05-12 13:14:27,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 455 transitions, 6187 flow [2024-05-12 13:14:27,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:27,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:27,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 185 transitions. [2024-05-12 13:14:27,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817708333333333 [2024-05-12 13:14:27,060 INFO L175 Difference]: Start difference. First operand has 298 places, 423 transitions, 4959 flow. Second operand 8 states and 185 transitions. [2024-05-12 13:14:27,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 455 transitions, 6187 flow [2024-05-12 13:14:28,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 455 transitions, 6017 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-05-12 13:14:28,574 INFO L231 Difference]: Finished difference. Result has 302 places, 426 transitions, 5025 flow [2024-05-12 13:14:28,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4789, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5025, PETRI_PLACES=302, PETRI_TRANSITIONS=426} [2024-05-12 13:14:28,575 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 248 predicate places. [2024-05-12 13:14:28,575 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 426 transitions, 5025 flow [2024-05-12 13:14:28,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:28,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:28,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:28,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-05-12 13:14:28,575 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:28,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash -816651940, now seen corresponding path program 8 times [2024-05-12 13:14:28,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:28,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286445709] [2024-05-12 13:14:28,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:28,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:28,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:29,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286445709] [2024-05-12 13:14:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286445709] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:29,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:29,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014506181] [2024-05-12 13:14:29,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:29,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:29,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:29,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:29,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 426 transitions, 5025 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:29,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:29,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:29,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:31,800 INFO L124 PetriNetUnfolderBase]: 6272/10491 cut-off events. [2024-05-12 13:14:31,800 INFO L125 PetriNetUnfolderBase]: For 729993/730005 co-relation queries the response was YES. [2024-05-12 13:14:31,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88171 conditions, 10491 events. 6272/10491 cut-off events. For 729993/730005 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 75040 event pairs, 1589 based on Foata normal form. 10/10213 useless extension candidates. Maximal degree in co-relation 88033. Up to 8636 conditions per place. [2024-05-12 13:14:31,957 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 386 selfloop transitions, 72 changer transitions 0/468 dead transitions. [2024-05-12 13:14:31,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 468 transitions, 6542 flow [2024-05-12 13:14:31,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:31,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:14:31,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-05-12 13:14:31,959 INFO L175 Difference]: Start difference. First operand has 302 places, 426 transitions, 5025 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:14:31,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 468 transitions, 6542 flow [2024-05-12 13:14:33,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 468 transitions, 6285 flow, removed 64 selfloop flow, removed 8 redundant places. [2024-05-12 13:14:33,421 INFO L231 Difference]: Finished difference. Result has 303 places, 435 transitions, 5160 flow [2024-05-12 13:14:33,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4768, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5160, PETRI_PLACES=303, PETRI_TRANSITIONS=435} [2024-05-12 13:14:33,421 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 249 predicate places. [2024-05-12 13:14:33,421 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 435 transitions, 5160 flow [2024-05-12 13:14:33,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:33,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:33,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:33,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-05-12 13:14:33,422 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:33,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:33,422 INFO L85 PathProgramCache]: Analyzing trace with hash -560151430, now seen corresponding path program 9 times [2024-05-12 13:14:33,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:33,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320903488] [2024-05-12 13:14:33,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:33,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:34,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:34,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320903488] [2024-05-12 13:14:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320903488] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:34,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:34,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:34,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220845772] [2024-05-12 13:14:34,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:34,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:34,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:34,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:34,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:34,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:34,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 435 transitions, 5160 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:34,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:34,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:34,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:36,725 INFO L124 PetriNetUnfolderBase]: 6294/10745 cut-off events. [2024-05-12 13:14:36,725 INFO L125 PetriNetUnfolderBase]: For 754490/754502 co-relation queries the response was YES. [2024-05-12 13:14:36,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89769 conditions, 10745 events. 6294/10745 cut-off events. For 754490/754502 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 77986 event pairs, 1569 based on Foata normal form. 9/10413 useless extension candidates. Maximal degree in co-relation 89630. Up to 8456 conditions per place. [2024-05-12 13:14:36,874 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 357 selfloop transitions, 112 changer transitions 0/479 dead transitions. [2024-05-12 13:14:36,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 479 transitions, 6854 flow [2024-05-12 13:14:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:36,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:14:36,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-05-12 13:14:36,875 INFO L175 Difference]: Start difference. First operand has 303 places, 435 transitions, 5160 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:14:36,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 479 transitions, 6854 flow [2024-05-12 13:14:38,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 479 transitions, 6636 flow, removed 75 selfloop flow, removed 4 redundant places. [2024-05-12 13:14:38,555 INFO L231 Difference]: Finished difference. Result has 309 places, 446 transitions, 5495 flow [2024-05-12 13:14:38,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=4942, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5495, PETRI_PLACES=309, PETRI_TRANSITIONS=446} [2024-05-12 13:14:38,556 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 255 predicate places. [2024-05-12 13:14:38,556 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 446 transitions, 5495 flow [2024-05-12 13:14:38,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:38,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:38,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:38,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-05-12 13:14:38,556 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:38,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:38,557 INFO L85 PathProgramCache]: Analyzing trace with hash -817097410, now seen corresponding path program 10 times [2024-05-12 13:14:38,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:38,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319793775] [2024-05-12 13:14:38,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:38,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:39,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:39,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319793775] [2024-05-12 13:14:39,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319793775] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:39,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:39,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078066959] [2024-05-12 13:14:39,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:39,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:39,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:39,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:39,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:39,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:39,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 446 transitions, 5495 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:39,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:39,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:39,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:42,071 INFO L124 PetriNetUnfolderBase]: 6328/10591 cut-off events. [2024-05-12 13:14:42,071 INFO L125 PetriNetUnfolderBase]: For 776997/777009 co-relation queries the response was YES. [2024-05-12 13:14:42,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92111 conditions, 10591 events. 6328/10591 cut-off events. For 776997/777009 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 75907 event pairs, 1572 based on Foata normal form. 10/10303 useless extension candidates. Maximal degree in co-relation 91968. Up to 8792 conditions per place. [2024-05-12 13:14:42,232 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 412 selfloop transitions, 61 changer transitions 0/483 dead transitions. [2024-05-12 13:14:42,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 483 transitions, 6853 flow [2024-05-12 13:14:42,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:42,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:14:42,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-05-12 13:14:42,234 INFO L175 Difference]: Start difference. First operand has 309 places, 446 transitions, 5495 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:14:42,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 483 transitions, 6853 flow [2024-05-12 13:14:43,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 483 transitions, 6608 flow, removed 62 selfloop flow, removed 4 redundant places. [2024-05-12 13:14:43,932 INFO L231 Difference]: Finished difference. Result has 313 places, 450 transitions, 5511 flow [2024-05-12 13:14:43,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5254, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5511, PETRI_PLACES=313, PETRI_TRANSITIONS=450} [2024-05-12 13:14:43,932 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 259 predicate places. [2024-05-12 13:14:43,932 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 450 transitions, 5511 flow [2024-05-12 13:14:43,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:43,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:43,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:43,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-05-12 13:14:43,933 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:43,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:43,933 INFO L85 PathProgramCache]: Analyzing trace with hash -994229333, now seen corresponding path program 11 times [2024-05-12 13:14:43,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:43,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395436424] [2024-05-12 13:14:43,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:43,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:44,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:44,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395436424] [2024-05-12 13:14:44,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395436424] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:44,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:44,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:44,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889393099] [2024-05-12 13:14:44,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:44,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:44,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:44,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:44,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:44,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 450 transitions, 5511 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:44,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:44,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:44,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:47,090 INFO L124 PetriNetUnfolderBase]: 6387/10666 cut-off events. [2024-05-12 13:14:47,091 INFO L125 PetriNetUnfolderBase]: For 792677/792686 co-relation queries the response was YES. [2024-05-12 13:14:47,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92604 conditions, 10666 events. 6387/10666 cut-off events. For 792677/792686 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76183 event pairs, 1612 based on Foata normal form. 8/10379 useless extension candidates. Maximal degree in co-relation 92460. Up to 8442 conditions per place. [2024-05-12 13:14:47,246 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 372 selfloop transitions, 107 changer transitions 0/489 dead transitions. [2024-05-12 13:14:47,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 489 transitions, 7235 flow [2024-05-12 13:14:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 194 transitions. [2024-05-12 13:14:47,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052083333333334 [2024-05-12 13:14:47,247 INFO L175 Difference]: Start difference. First operand has 313 places, 450 transitions, 5511 flow. Second operand 8 states and 194 transitions. [2024-05-12 13:14:47,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 489 transitions, 7235 flow [2024-05-12 13:14:49,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 489 transitions, 7038 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-05-12 13:14:49,070 INFO L231 Difference]: Finished difference. Result has 315 places, 456 transitions, 5836 flow [2024-05-12 13:14:49,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5314, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5836, PETRI_PLACES=315, PETRI_TRANSITIONS=456} [2024-05-12 13:14:49,070 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 261 predicate places. [2024-05-12 13:14:49,071 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 456 transitions, 5836 flow [2024-05-12 13:14:49,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:49,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:49,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:49,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-05-12 13:14:49,071 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:49,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash -994228930, now seen corresponding path program 11 times [2024-05-12 13:14:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:49,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847476533] [2024-05-12 13:14:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:50,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:50,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:50,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847476533] [2024-05-12 13:14:50,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847476533] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:50,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:50,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:50,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186849904] [2024-05-12 13:14:50,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:50,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:50,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:50,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:50,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 456 transitions, 5836 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:50,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:50,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:50,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:52,692 INFO L124 PetriNetUnfolderBase]: 6381/10691 cut-off events. [2024-05-12 13:14:52,692 INFO L125 PetriNetUnfolderBase]: For 813964/813976 co-relation queries the response was YES. [2024-05-12 13:14:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93409 conditions, 10691 events. 6381/10691 cut-off events. For 813964/813976 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 76793 event pairs, 1571 based on Foata normal form. 10/10399 useless extension candidates. Maximal degree in co-relation 93264. Up to 8864 conditions per place. [2024-05-12 13:14:52,851 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 418 selfloop transitions, 61 changer transitions 0/489 dead transitions. [2024-05-12 13:14:52,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 489 transitions, 7082 flow [2024-05-12 13:14:52,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:52,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:52,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:14:52,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-05-12 13:14:52,852 INFO L175 Difference]: Start difference. First operand has 315 places, 456 transitions, 5836 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:14:52,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 489 transitions, 7082 flow [2024-05-12 13:14:54,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 489 transitions, 6638 flow, removed 138 selfloop flow, removed 5 redundant places. [2024-05-12 13:14:54,828 INFO L231 Difference]: Finished difference. Result has 318 places, 456 transitions, 5521 flow [2024-05-12 13:14:54,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5392, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5521, PETRI_PLACES=318, PETRI_TRANSITIONS=456} [2024-05-12 13:14:54,829 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 264 predicate places. [2024-05-12 13:14:54,829 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 456 transitions, 5521 flow [2024-05-12 13:14:54,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:54,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:14:54,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:14:54,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-05-12 13:14:54,829 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:14:54,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:14:54,829 INFO L85 PathProgramCache]: Analyzing trace with hash -989587703, now seen corresponding path program 12 times [2024-05-12 13:14:54,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:14:54,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925873756] [2024-05-12 13:14:54,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:14:54,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:14:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:14:55,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:14:55,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:14:55,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925873756] [2024-05-12 13:14:55,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925873756] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:14:55,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:14:55,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:14:55,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435688387] [2024-05-12 13:14:55,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:14:55,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:14:55,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:14:55,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:14:55,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:14:55,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:14:55,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 456 transitions, 5521 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:14:55,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:14:55,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:14:55,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:14:58,335 INFO L124 PetriNetUnfolderBase]: 6375/10654 cut-off events. [2024-05-12 13:14:58,335 INFO L125 PetriNetUnfolderBase]: For 786250/786259 co-relation queries the response was YES. [2024-05-12 13:14:58,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91164 conditions, 10654 events. 6375/10654 cut-off events. For 786250/786259 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 76131 event pairs, 1629 based on Foata normal form. 8/10371 useless extension candidates. Maximal degree in co-relation 91018. Up to 8429 conditions per place. [2024-05-12 13:14:58,472 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 369 selfloop transitions, 109 changer transitions 0/488 dead transitions. [2024-05-12 13:14:58,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 488 transitions, 6789 flow [2024-05-12 13:14:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:14:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:14:58,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 192 transitions. [2024-05-12 13:14:58,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-05-12 13:14:58,474 INFO L175 Difference]: Start difference. First operand has 318 places, 456 transitions, 5521 flow. Second operand 8 states and 192 transitions. [2024-05-12 13:14:58,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 488 transitions, 6789 flow [2024-05-12 13:15:00,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 488 transitions, 6578 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-05-12 13:15:00,090 INFO L231 Difference]: Finished difference. Result has 320 places, 456 transitions, 5534 flow [2024-05-12 13:15:00,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5310, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5534, PETRI_PLACES=320, PETRI_TRANSITIONS=456} [2024-05-12 13:15:00,090 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 266 predicate places. [2024-05-12 13:15:00,091 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 456 transitions, 5534 flow [2024-05-12 13:15:00,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:00,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:00,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:00,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-05-12 13:15:00,091 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:00,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:00,092 INFO L85 PathProgramCache]: Analyzing trace with hash -461596748, now seen corresponding path program 12 times [2024-05-12 13:15:00,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:00,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8800187] [2024-05-12 13:15:00,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:00,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:01,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:01,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:01,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8800187] [2024-05-12 13:15:01,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8800187] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:01,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:01,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:01,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705789657] [2024-05-12 13:15:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:01,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:01,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:01,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:15:01,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 456 transitions, 5534 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:01,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:01,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:15:01,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:03,627 INFO L124 PetriNetUnfolderBase]: 6372/10935 cut-off events. [2024-05-12 13:15:03,627 INFO L125 PetriNetUnfolderBase]: For 789726/789738 co-relation queries the response was YES. [2024-05-12 13:15:03,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91406 conditions, 10935 events. 6372/10935 cut-off events. For 789726/789738 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 80173 event pairs, 1576 based on Foata normal form. 9/10577 useless extension candidates. Maximal degree in co-relation 91259. Up to 8555 conditions per place. [2024-05-12 13:15:03,801 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 361 selfloop transitions, 117 changer transitions 0/488 dead transitions. [2024-05-12 13:15:03,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 488 transitions, 6723 flow [2024-05-12 13:15:03,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:15:03,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:15:03,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:15:03,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-05-12 13:15:03,802 INFO L175 Difference]: Start difference. First operand has 320 places, 456 transitions, 5534 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:15:03,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 488 transitions, 6723 flow [2024-05-12 13:15:05,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 488 transitions, 6419 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-05-12 13:15:05,641 INFO L231 Difference]: Finished difference. Result has 321 places, 457 transitions, 5487 flow [2024-05-12 13:15:05,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5238, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5487, PETRI_PLACES=321, PETRI_TRANSITIONS=457} [2024-05-12 13:15:05,642 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 267 predicate places. [2024-05-12 13:15:05,642 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 457 transitions, 5487 flow [2024-05-12 13:15:05,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:05,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:05,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:05,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-05-12 13:15:05,642 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:05,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:05,643 INFO L85 PathProgramCache]: Analyzing trace with hash -994352279, now seen corresponding path program 4 times [2024-05-12 13:15:05,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:05,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076029205] [2024-05-12 13:15:05,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:05,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:06,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:06,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076029205] [2024-05-12 13:15:06,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076029205] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:06,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:06,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:06,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362532535] [2024-05-12 13:15:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:06,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:06,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:06,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:06,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:15:06,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 457 transitions, 5487 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:06,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:06,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:15:06,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:08,800 INFO L124 PetriNetUnfolderBase]: 6375/10721 cut-off events. [2024-05-12 13:15:08,801 INFO L125 PetriNetUnfolderBase]: For 790829/790829 co-relation queries the response was YES. [2024-05-12 13:15:08,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91046 conditions, 10721 events. 6375/10721 cut-off events. For 790829/790829 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 77322 event pairs, 1649 based on Foata normal form. 2/10414 useless extension candidates. Maximal degree in co-relation 90898. Up to 9015 conditions per place. [2024-05-12 13:15:08,973 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 437 selfloop transitions, 41 changer transitions 0/488 dead transitions. [2024-05-12 13:15:08,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 488 transitions, 6697 flow [2024-05-12 13:15:08,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:15:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:15:08,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 184 transitions. [2024-05-12 13:15:08,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-05-12 13:15:08,974 INFO L175 Difference]: Start difference. First operand has 321 places, 457 transitions, 5487 flow. Second operand 8 states and 184 transitions. [2024-05-12 13:15:08,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 488 transitions, 6697 flow [2024-05-12 13:15:10,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 488 transitions, 6521 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-05-12 13:15:10,975 INFO L231 Difference]: Finished difference. Result has 325 places, 459 transitions, 5486 flow [2024-05-12 13:15:10,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5311, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5486, PETRI_PLACES=325, PETRI_TRANSITIONS=459} [2024-05-12 13:15:10,975 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 271 predicate places. [2024-05-12 13:15:10,975 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 459 transitions, 5486 flow [2024-05-12 13:15:10,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:10,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:10,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:10,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-05-12 13:15:10,976 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:10,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1240301246, now seen corresponding path program 1 times [2024-05-12 13:15:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:10,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908274705] [2024-05-12 13:15:10,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:10,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:12,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:12,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:12,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908274705] [2024-05-12 13:15:12,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908274705] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:12,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:12,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:12,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876447057] [2024-05-12 13:15:12,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:12,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:12,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:12,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:12,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:15:12,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 459 transitions, 5486 flow. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:12,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:12,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:15:12,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:14,513 INFO L124 PetriNetUnfolderBase]: 5920/10317 cut-off events. [2024-05-12 13:15:14,513 INFO L125 PetriNetUnfolderBase]: For 788031/788117 co-relation queries the response was YES. [2024-05-12 13:15:14,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86013 conditions, 10317 events. 5920/10317 cut-off events. For 788031/788117 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 76644 event pairs, 1562 based on Foata normal form. 27/9907 useless extension candidates. Maximal degree in co-relation 85864. Up to 8223 conditions per place. [2024-05-12 13:15:14,672 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 402 selfloop transitions, 23 changer transitions 0/490 dead transitions. [2024-05-12 13:15:14,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 490 transitions, 6592 flow [2024-05-12 13:15:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:15:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:15:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:15:14,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-05-12 13:15:14,674 INFO L175 Difference]: Start difference. First operand has 325 places, 459 transitions, 5486 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:15:14,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 490 transitions, 6592 flow [2024-05-12 13:15:16,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 490 transitions, 6433 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-05-12 13:15:16,463 INFO L231 Difference]: Finished difference. Result has 327 places, 462 transitions, 5476 flow [2024-05-12 13:15:16,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5327, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5476, PETRI_PLACES=327, PETRI_TRANSITIONS=462} [2024-05-12 13:15:16,464 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 273 predicate places. [2024-05-12 13:15:16,464 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 462 transitions, 5476 flow [2024-05-12 13:15:16,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:16,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:16,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:16,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-05-12 13:15:16,464 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:16,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash -565855430, now seen corresponding path program 2 times [2024-05-12 13:15:16,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:16,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084249684] [2024-05-12 13:15:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:16,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:16,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084249684] [2024-05-12 13:15:17,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084249684] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:17,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:17,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:17,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526744467] [2024-05-12 13:15:17,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:17,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:17,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:17,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:17,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:15:17,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 462 transitions, 5476 flow. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:17,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:17,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:15:17,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:19,955 INFO L124 PetriNetUnfolderBase]: 5908/10285 cut-off events. [2024-05-12 13:15:19,956 INFO L125 PetriNetUnfolderBase]: For 792476/792544 co-relation queries the response was YES. [2024-05-12 13:15:20,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86112 conditions, 10285 events. 5908/10285 cut-off events. For 792476/792544 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 76308 event pairs, 1505 based on Foata normal form. 23/9855 useless extension candidates. Maximal degree in co-relation 85962. Up to 7945 conditions per place. [2024-05-12 13:15:20,105 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 353 selfloop transitions, 75 changer transitions 0/493 dead transitions. [2024-05-12 13:15:20,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 493 transitions, 6594 flow [2024-05-12 13:15:20,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:15:20,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:15:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 195 transitions. [2024-05-12 13:15:20,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5078125 [2024-05-12 13:15:20,107 INFO L175 Difference]: Start difference. First operand has 327 places, 462 transitions, 5476 flow. Second operand 8 states and 195 transitions. [2024-05-12 13:15:20,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 493 transitions, 6594 flow [2024-05-12 13:15:21,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 493 transitions, 6471 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-05-12 13:15:21,717 INFO L231 Difference]: Finished difference. Result has 328 places, 465 transitions, 5612 flow [2024-05-12 13:15:21,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5353, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5612, PETRI_PLACES=328, PETRI_TRANSITIONS=465} [2024-05-12 13:15:21,718 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 274 predicate places. [2024-05-12 13:15:21,718 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 465 transitions, 5612 flow [2024-05-12 13:15:21,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:21,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:21,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:21,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-05-12 13:15:21,718 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:21,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:21,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2030225827, now seen corresponding path program 5 times [2024-05-12 13:15:21,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:21,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769578878] [2024-05-12 13:15:21,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:21,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:22,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:22,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769578878] [2024-05-12 13:15:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769578878] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:22,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:22,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:22,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685870322] [2024-05-12 13:15:22,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:22,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:22,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:22,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:15:22,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 465 transitions, 5612 flow. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:22,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:22,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:15:22,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:25,296 INFO L124 PetriNetUnfolderBase]: 6511/10799 cut-off events. [2024-05-12 13:15:25,296 INFO L125 PetriNetUnfolderBase]: For 807425/807434 co-relation queries the response was YES. [2024-05-12 13:15:25,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93283 conditions, 10799 events. 6511/10799 cut-off events. For 807425/807434 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 76675 event pairs, 1742 based on Foata normal form. 7/10547 useless extension candidates. Maximal degree in co-relation 93133. Up to 9217 conditions per place. [2024-05-12 13:15:25,447 INFO L140 encePairwiseOnDemand]: 34/48 looper letters, 457 selfloop transitions, 68 changer transitions 0/535 dead transitions. [2024-05-12 13:15:25,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 535 transitions, 7239 flow [2024-05-12 13:15:25,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:15:25,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:15:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 217 transitions. [2024-05-12 13:15:25,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023148148148148 [2024-05-12 13:15:25,448 INFO L175 Difference]: Start difference. First operand has 328 places, 465 transitions, 5612 flow. Second operand 9 states and 217 transitions. [2024-05-12 13:15:25,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 535 transitions, 7239 flow [2024-05-12 13:15:27,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 535 transitions, 6929 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-05-12 13:15:27,355 INFO L231 Difference]: Finished difference. Result has 332 places, 497 transitions, 5971 flow [2024-05-12 13:15:27,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5304, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5971, PETRI_PLACES=332, PETRI_TRANSITIONS=497} [2024-05-12 13:15:27,355 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 278 predicate places. [2024-05-12 13:15:27,355 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 497 transitions, 5971 flow [2024-05-12 13:15:27,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:27,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:27,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:27,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-05-12 13:15:27,356 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:27,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:27,356 INFO L85 PathProgramCache]: Analyzing trace with hash 973242911, now seen corresponding path program 1 times [2024-05-12 13:15:27,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:27,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042070673] [2024-05-12 13:15:27,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:27,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:28,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:28,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042070673] [2024-05-12 13:15:28,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042070673] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:28,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:28,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:28,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914614505] [2024-05-12 13:15:28,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:28,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:28,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:28,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:28,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:15:28,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 497 transitions, 5971 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:28,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:28,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:15:28,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:30,757 INFO L124 PetriNetUnfolderBase]: 6245/10490 cut-off events. [2024-05-12 13:15:30,757 INFO L125 PetriNetUnfolderBase]: For 811431/811442 co-relation queries the response was YES. [2024-05-12 13:15:30,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91803 conditions, 10490 events. 6245/10490 cut-off events. For 811431/811442 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 75475 event pairs, 1565 based on Foata normal form. 9/10245 useless extension candidates. Maximal degree in co-relation 91651. Up to 8741 conditions per place. [2024-05-12 13:15:30,942 INFO L140 encePairwiseOnDemand]: 37/48 looper letters, 481 selfloop transitions, 21 changer transitions 0/535 dead transitions. [2024-05-12 13:15:30,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 535 transitions, 7231 flow [2024-05-12 13:15:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:15:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:15:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-05-12 13:15:30,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-05-12 13:15:30,943 INFO L175 Difference]: Start difference. First operand has 332 places, 497 transitions, 5971 flow. Second operand 9 states and 208 transitions. [2024-05-12 13:15:30,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 535 transitions, 7231 flow [2024-05-12 13:15:32,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 535 transitions, 7198 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-05-12 13:15:32,880 INFO L231 Difference]: Finished difference. Result has 340 places, 502 transitions, 6119 flow [2024-05-12 13:15:32,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5938, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6119, PETRI_PLACES=340, PETRI_TRANSITIONS=502} [2024-05-12 13:15:32,881 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 286 predicate places. [2024-05-12 13:15:32,881 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 502 transitions, 6119 flow [2024-05-12 13:15:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:32,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:32,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:32,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-05-12 13:15:32,881 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:32,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash -133492969, now seen corresponding path program 2 times [2024-05-12 13:15:32,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:32,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765699145] [2024-05-12 13:15:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:33,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:33,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:33,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765699145] [2024-05-12 13:15:33,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765699145] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:33,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:33,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:33,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495934705] [2024-05-12 13:15:33,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:33,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:33,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:33,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:33,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:33,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:15:33,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 502 transitions, 6119 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:33,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:33,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:15:33,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:36,261 INFO L124 PetriNetUnfolderBase]: 6265/10513 cut-off events. [2024-05-12 13:15:36,261 INFO L125 PetriNetUnfolderBase]: For 833148/833159 co-relation queries the response was YES. [2024-05-12 13:15:36,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93122 conditions, 10513 events. 6265/10513 cut-off events. For 833148/833159 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 75629 event pairs, 1638 based on Foata normal form. 9/10272 useless extension candidates. Maximal degree in co-relation 92967. Up to 8788 conditions per place. [2024-05-12 13:15:36,423 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 482 selfloop transitions, 20 changer transitions 0/535 dead transitions. [2024-05-12 13:15:36,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 535 transitions, 7363 flow [2024-05-12 13:15:36,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:15:36,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:15:36,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 191 transitions. [2024-05-12 13:15:36,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4973958333333333 [2024-05-12 13:15:36,424 INFO L175 Difference]: Start difference. First operand has 340 places, 502 transitions, 6119 flow. Second operand 8 states and 191 transitions. [2024-05-12 13:15:36,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 535 transitions, 7363 flow [2024-05-12 13:15:38,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 535 transitions, 7194 flow, removed 53 selfloop flow, removed 6 redundant places. [2024-05-12 13:15:38,635 INFO L231 Difference]: Finished difference. Result has 342 places, 504 transitions, 6085 flow [2024-05-12 13:15:38,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5950, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6085, PETRI_PLACES=342, PETRI_TRANSITIONS=504} [2024-05-12 13:15:38,636 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 288 predicate places. [2024-05-12 13:15:38,636 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 504 transitions, 6085 flow [2024-05-12 13:15:38,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:38,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:38,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:38,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-05-12 13:15:38,637 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:38,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:38,637 INFO L85 PathProgramCache]: Analyzing trace with hash -128130589, now seen corresponding path program 3 times [2024-05-12 13:15:38,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:38,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449001026] [2024-05-12 13:15:38,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:38,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:39,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:39,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449001026] [2024-05-12 13:15:39,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449001026] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:39,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:39,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:39,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396474760] [2024-05-12 13:15:39,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:39,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:39,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:39,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:39,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:39,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:15:39,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 504 transitions, 6085 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:39,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:39,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:15:39,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:42,081 INFO L124 PetriNetUnfolderBase]: 6293/10565 cut-off events. [2024-05-12 13:15:42,081 INFO L125 PetriNetUnfolderBase]: For 851825/851836 co-relation queries the response was YES. [2024-05-12 13:15:42,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93571 conditions, 10565 events. 6293/10565 cut-off events. For 851825/851836 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 76047 event pairs, 1632 based on Foata normal form. 9/10322 useless extension candidates. Maximal degree in co-relation 93416. Up to 8830 conditions per place. [2024-05-12 13:15:42,243 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 487 selfloop transitions, 19 changer transitions 0/539 dead transitions. [2024-05-12 13:15:42,243 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 539 transitions, 7421 flow [2024-05-12 13:15:42,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:15:42,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:15:42,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 189 transitions. [2024-05-12 13:15:42,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2024-05-12 13:15:42,244 INFO L175 Difference]: Start difference. First operand has 342 places, 504 transitions, 6085 flow. Second operand 8 states and 189 transitions. [2024-05-12 13:15:42,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 539 transitions, 7421 flow [2024-05-12 13:15:44,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 539 transitions, 7302 flow, removed 41 selfloop flow, removed 6 redundant places. [2024-05-12 13:15:44,643 INFO L231 Difference]: Finished difference. Result has 345 places, 509 transitions, 6171 flow [2024-05-12 13:15:44,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5966, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6171, PETRI_PLACES=345, PETRI_TRANSITIONS=509} [2024-05-12 13:15:44,643 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 291 predicate places. [2024-05-12 13:15:44,643 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 509 transitions, 6171 flow [2024-05-12 13:15:44,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:44,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:44,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:44,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-05-12 13:15:44,644 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:44,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:44,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1239037818, now seen corresponding path program 1 times [2024-05-12 13:15:44,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:44,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977787793] [2024-05-12 13:15:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:44,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:46,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:46,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:46,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977787793] [2024-05-12 13:15:46,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977787793] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:46,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:46,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:15:46,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648952334] [2024-05-12 13:15:46,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:46,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:15:46,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:15:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:15:46,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:15:46,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 509 transitions, 6171 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:46,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:46,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:15:46,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:48,796 INFO L124 PetriNetUnfolderBase]: 6607/10936 cut-off events. [2024-05-12 13:15:48,796 INFO L125 PetriNetUnfolderBase]: For 865526/865526 co-relation queries the response was YES. [2024-05-12 13:15:48,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96126 conditions, 10936 events. 6607/10936 cut-off events. For 865526/865526 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 77584 event pairs, 1745 based on Foata normal form. 2/10677 useless extension candidates. Maximal degree in co-relation 95969. Up to 9411 conditions per place. [2024-05-12 13:15:48,991 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 508 selfloop transitions, 28 changer transitions 0/546 dead transitions. [2024-05-12 13:15:48,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 546 transitions, 7520 flow [2024-05-12 13:15:48,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:15:48,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:15:48,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 207 transitions. [2024-05-12 13:15:48,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-05-12 13:15:48,992 INFO L175 Difference]: Start difference. First operand has 345 places, 509 transitions, 6171 flow. Second operand 9 states and 207 transitions. [2024-05-12 13:15:48,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 546 transitions, 7520 flow [2024-05-12 13:15:51,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 546 transitions, 7367 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-05-12 13:15:51,114 INFO L231 Difference]: Finished difference. Result has 349 places, 512 transitions, 6154 flow [2024-05-12 13:15:51,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6018, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6154, PETRI_PLACES=349, PETRI_TRANSITIONS=512} [2024-05-12 13:15:51,115 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 295 predicate places. [2024-05-12 13:15:51,115 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 512 transitions, 6154 flow [2024-05-12 13:15:51,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:51,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:51,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:51,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-05-12 13:15:51,115 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:51,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:51,115 INFO L85 PathProgramCache]: Analyzing trace with hash -816851549, now seen corresponding path program 4 times [2024-05-12 13:15:51,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:51,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355552840] [2024-05-12 13:15:51,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:51,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:51,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:52,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355552840] [2024-05-12 13:15:52,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355552840] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:52,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:52,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-05-12 13:15:52,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047915163] [2024-05-12 13:15:52,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:52,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-05-12 13:15:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:52,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-05-12 13:15:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-05-12 13:15:52,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 48 [2024-05-12 13:15:52,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 512 transitions, 6154 flow. Second operand has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:52,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:52,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 48 [2024-05-12 13:15:52,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:15:54,954 INFO L124 PetriNetUnfolderBase]: 6323/10738 cut-off events. [2024-05-12 13:15:54,954 INFO L125 PetriNetUnfolderBase]: For 869715/869769 co-relation queries the response was YES. [2024-05-12 13:15:55,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94136 conditions, 10738 events. 6323/10738 cut-off events. For 869715/869769 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 78570 event pairs, 1567 based on Foata normal form. 14/10448 useless extension candidates. Maximal degree in co-relation 93978. Up to 8828 conditions per place. [2024-05-12 13:15:55,130 INFO L140 encePairwiseOnDemand]: 38/48 looper letters, 487 selfloop transitions, 26 changer transitions 0/546 dead transitions. [2024-05-12 13:15:55,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 546 transitions, 7525 flow [2024-05-12 13:15:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:15:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:15:55,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 190 transitions. [2024-05-12 13:15:55,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4947916666666667 [2024-05-12 13:15:55,131 INFO L175 Difference]: Start difference. First operand has 349 places, 512 transitions, 6154 flow. Second operand 8 states and 190 transitions. [2024-05-12 13:15:55,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 546 transitions, 7525 flow [2024-05-12 13:15:57,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 546 transitions, 7385 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-05-12 13:15:57,365 INFO L231 Difference]: Finished difference. Result has 351 places, 517 transitions, 6236 flow [2024-05-12 13:15:57,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6014, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6236, PETRI_PLACES=351, PETRI_TRANSITIONS=517} [2024-05-12 13:15:57,366 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 297 predicate places. [2024-05-12 13:15:57,366 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 517 transitions, 6236 flow [2024-05-12 13:15:57,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.777777777777779) internal successors, (142), 9 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:57,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:15:57,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:15:57,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-05-12 13:15:57,366 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:15:57,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:15:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -816636068, now seen corresponding path program 2 times [2024-05-12 13:15:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:15:57,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885626239] [2024-05-12 13:15:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:15:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:15:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:15:59,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:15:59,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:15:59,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885626239] [2024-05-12 13:15:59,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885626239] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:15:59,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:15:59,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:15:59,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395643258] [2024-05-12 13:15:59,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:15:59,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:15:59,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:15:59,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:15:59,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:15:59,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:15:59,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 517 transitions, 6236 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:15:59,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:15:59,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:15:59,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:02,228 INFO L124 PetriNetUnfolderBase]: 6644/11062 cut-off events. [2024-05-12 13:16:02,229 INFO L125 PetriNetUnfolderBase]: For 891795/891804 co-relation queries the response was YES. [2024-05-12 13:16:02,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96905 conditions, 11062 events. 6644/11062 cut-off events. For 891795/891804 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 79387 event pairs, 1679 based on Foata normal form. 8/10780 useless extension candidates. Maximal degree in co-relation 96745. Up to 9431 conditions per place. [2024-05-12 13:16:02,425 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 509 selfloop transitions, 35 changer transitions 0/554 dead transitions. [2024-05-12 13:16:02,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 554 transitions, 7712 flow [2024-05-12 13:16:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:16:02,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:16:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-05-12 13:16:02,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-05-12 13:16:02,426 INFO L175 Difference]: Start difference. First operand has 351 places, 517 transitions, 6236 flow. Second operand 9 states and 208 transitions. [2024-05-12 13:16:02,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 554 transitions, 7712 flow [2024-05-12 13:16:05,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 554 transitions, 7539 flow, removed 63 selfloop flow, removed 5 redundant places. [2024-05-12 13:16:05,016 INFO L231 Difference]: Finished difference. Result has 355 places, 521 transitions, 6308 flow [2024-05-12 13:16:05,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6063, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=517, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6308, PETRI_PLACES=355, PETRI_TRANSITIONS=521} [2024-05-12 13:16:05,017 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 301 predicate places. [2024-05-12 13:16:05,017 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 521 transitions, 6308 flow [2024-05-12 13:16:05,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:05,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:05,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:05,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-05-12 13:16:05,017 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:16:05,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash -560135558, now seen corresponding path program 3 times [2024-05-12 13:16:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:05,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207119062] [2024-05-12 13:16:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:05,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:06,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:06,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207119062] [2024-05-12 13:16:06,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207119062] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:06,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:06,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:16:06,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895255273] [2024-05-12 13:16:06,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:06,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:16:06,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:06,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:16:06,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:16:06,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:16:06,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 521 transitions, 6308 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:06,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:06,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:16:06,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:08,928 INFO L124 PetriNetUnfolderBase]: 6678/11453 cut-off events. [2024-05-12 13:16:08,928 INFO L125 PetriNetUnfolderBase]: For 919388/919397 co-relation queries the response was YES. [2024-05-12 13:16:09,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98304 conditions, 11453 events. 6678/11453 cut-off events. For 919388/919397 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 84263 event pairs, 1666 based on Foata normal form. 7/11086 useless extension candidates. Maximal degree in co-relation 98143. Up to 9389 conditions per place. [2024-05-12 13:16:09,135 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 497 selfloop transitions, 53 changer transitions 0/560 dead transitions. [2024-05-12 13:16:09,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 560 transitions, 7758 flow [2024-05-12 13:16:09,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:16:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:16:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-05-12 13:16:09,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-05-12 13:16:09,136 INFO L175 Difference]: Start difference. First operand has 355 places, 521 transitions, 6308 flow. Second operand 9 states and 208 transitions. [2024-05-12 13:16:09,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 560 transitions, 7758 flow [2024-05-12 13:16:11,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 560 transitions, 7510 flow, removed 82 selfloop flow, removed 7 redundant places. [2024-05-12 13:16:11,769 INFO L231 Difference]: Finished difference. Result has 357 places, 527 transitions, 6300 flow [2024-05-12 13:16:11,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6300, PETRI_PLACES=357, PETRI_TRANSITIONS=527} [2024-05-12 13:16:11,769 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 303 predicate places. [2024-05-12 13:16:11,769 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 527 transitions, 6300 flow [2024-05-12 13:16:11,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:11,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:11,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:11,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-05-12 13:16:11,770 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:16:11,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1225490624, now seen corresponding path program 4 times [2024-05-12 13:16:11,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:11,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518999584] [2024-05-12 13:16:11,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:11,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:13,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:13,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518999584] [2024-05-12 13:16:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518999584] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:13,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:13,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:16:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842425954] [2024-05-12 13:16:13,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:13,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:16:13,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:13,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:16:13,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:16:13,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:16:13,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 527 transitions, 6300 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:13,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:13,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:16:13,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:15,808 INFO L124 PetriNetUnfolderBase]: 6700/11300 cut-off events. [2024-05-12 13:16:15,808 INFO L125 PetriNetUnfolderBase]: For 933172/933181 co-relation queries the response was YES. [2024-05-12 13:16:15,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98818 conditions, 11300 events. 6700/11300 cut-off events. For 933172/933181 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 81944 event pairs, 1658 based on Foata normal form. 7/10978 useless extension candidates. Maximal degree in co-relation 98656. Up to 9341 conditions per place. [2024-05-12 13:16:15,994 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 486 selfloop transitions, 71 changer transitions 0/567 dead transitions. [2024-05-12 13:16:15,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 567 transitions, 8042 flow [2024-05-12 13:16:15,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:16:15,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:16:15,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2024-05-12 13:16:15,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48842592592592593 [2024-05-12 13:16:15,995 INFO L175 Difference]: Start difference. First operand has 357 places, 527 transitions, 6300 flow. Second operand 9 states and 211 transitions. [2024-05-12 13:16:15,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 567 transitions, 8042 flow [2024-05-12 13:16:18,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 567 transitions, 7716 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-05-12 13:16:18,382 INFO L231 Difference]: Finished difference. Result has 358 places, 533 transitions, 6344 flow [2024-05-12 13:16:18,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=5974, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6344, PETRI_PLACES=358, PETRI_TRANSITIONS=533} [2024-05-12 13:16:18,382 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 304 predicate places. [2024-05-12 13:16:18,382 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 533 transitions, 6344 flow [2024-05-12 13:16:18,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:18,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:18,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:18,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-05-12 13:16:18,383 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:16:18,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1234754354, now seen corresponding path program 5 times [2024-05-12 13:16:18,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:18,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402895918] [2024-05-12 13:16:18,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:18,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:20,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:20,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402895918] [2024-05-12 13:16:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402895918] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:20,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:20,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:16:20,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898813766] [2024-05-12 13:16:20,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:20,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:16:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:20,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:16:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:16:20,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:16:20,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 533 transitions, 6344 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:20,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:20,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:16:20,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:23,068 INFO L124 PetriNetUnfolderBase]: 6697/11335 cut-off events. [2024-05-12 13:16:23,069 INFO L125 PetriNetUnfolderBase]: For 947114/947123 co-relation queries the response was YES. [2024-05-12 13:16:23,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98561 conditions, 11335 events. 6697/11335 cut-off events. For 947114/947123 co-relation queries the response was YES. Maximal size of possible extension queue 511. Compared 82679 event pairs, 1668 based on Foata normal form. 7/11002 useless extension candidates. Maximal degree in co-relation 98400. Up to 9415 conditions per place. [2024-05-12 13:16:23,279 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 501 selfloop transitions, 55 changer transitions 0/566 dead transitions. [2024-05-12 13:16:23,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 566 transitions, 7684 flow [2024-05-12 13:16:23,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:16:23,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:16:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 208 transitions. [2024-05-12 13:16:23,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-05-12 13:16:23,280 INFO L175 Difference]: Start difference. First operand has 358 places, 533 transitions, 6344 flow. Second operand 9 states and 208 transitions. [2024-05-12 13:16:23,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 566 transitions, 7684 flow [2024-05-12 13:16:26,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 566 transitions, 7401 flow, removed 95 selfloop flow, removed 6 redundant places. [2024-05-12 13:16:26,240 INFO L231 Difference]: Finished difference. Result has 361 places, 533 transitions, 6177 flow [2024-05-12 13:16:26,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6061, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6177, PETRI_PLACES=361, PETRI_TRANSITIONS=533} [2024-05-12 13:16:26,240 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 307 predicate places. [2024-05-12 13:16:26,240 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 533 transitions, 6177 flow [2024-05-12 13:16:26,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:26,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:26,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:26,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-05-12 13:16:26,241 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:16:26,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:26,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1412341093, now seen corresponding path program 1 times [2024-05-12 13:16:26,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:26,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688809511] [2024-05-12 13:16:26,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:26,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:26,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:26,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688809511] [2024-05-12 13:16:26,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688809511] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:26,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:26,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-05-12 13:16:26,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988558014] [2024-05-12 13:16:26,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:26,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-05-12 13:16:26,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:26,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-05-12 13:16:26,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-05-12 13:16:26,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 48 [2024-05-12 13:16:26,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 533 transitions, 6177 flow. Second operand has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 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) [2024-05-12 13:16:26,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:26,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 48 [2024-05-12 13:16:26,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:29,560 INFO L124 PetriNetUnfolderBase]: 6055/10085 cut-off events. [2024-05-12 13:16:29,560 INFO L125 PetriNetUnfolderBase]: For 817396/819741 co-relation queries the response was YES. [2024-05-12 13:16:29,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86141 conditions, 10085 events. 6055/10085 cut-off events. For 817396/819741 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 75056 event pairs, 1106 based on Foata normal form. 216/9480 useless extension candidates. Maximal degree in co-relation 85980. Up to 2401 conditions per place. [2024-05-12 13:16:29,701 INFO L140 encePairwiseOnDemand]: 42/48 looper letters, 321 selfloop transitions, 50 changer transitions 184/867 dead transitions. [2024-05-12 13:16:29,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 867 transitions, 10648 flow [2024-05-12 13:16:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-05-12 13:16:29,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-05-12 13:16:29,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 230 transitions. [2024-05-12 13:16:29,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989583333333334 [2024-05-12 13:16:29,702 INFO L175 Difference]: Start difference. First operand has 361 places, 533 transitions, 6177 flow. Second operand 8 states and 230 transitions. [2024-05-12 13:16:29,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 867 transitions, 10648 flow [2024-05-12 13:16:31,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 867 transitions, 10324 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-05-12 13:16:31,933 INFO L231 Difference]: Finished difference. Result has 366 places, 536 transitions, 6228 flow [2024-05-12 13:16:31,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6011, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6228, PETRI_PLACES=366, PETRI_TRANSITIONS=536} [2024-05-12 13:16:31,934 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 312 predicate places. [2024-05-12 13:16:31,934 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 536 transitions, 6228 flow [2024-05-12 13:16:31,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.2) internal successors, (121), 5 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) [2024-05-12 13:16:31,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:31,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-05-12 13:16:31,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-05-12 13:16:31,935 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:16:31,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1743216589, now seen corresponding path program 1 times [2024-05-12 13:16:31,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:31,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824037799] [2024-05-12 13:16:31,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:31,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:32,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:32,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824037799] [2024-05-12 13:16:32,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824037799] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:32,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:32,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:16:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214901439] [2024-05-12 13:16:32,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:32,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:16:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:16:32,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:16:33,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:16:33,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 536 transitions, 6228 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:33,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:33,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:16:33,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:36,483 INFO L124 PetriNetUnfolderBase]: 6617/10745 cut-off events. [2024-05-12 13:16:36,483 INFO L125 PetriNetUnfolderBase]: For 934570/934597 co-relation queries the response was YES. [2024-05-12 13:16:36,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98843 conditions, 10745 events. 6617/10745 cut-off events. For 934570/934597 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 74080 event pairs, 1693 based on Foata normal form. 28/10738 useless extension candidates. Maximal degree in co-relation 98677. Up to 9411 conditions per place. [2024-05-12 13:16:36,645 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 528 selfloop transitions, 45 changer transitions 3/587 dead transitions. [2024-05-12 13:16:36,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 587 transitions, 7814 flow [2024-05-12 13:16:36,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:16:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:16:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 215 transitions. [2024-05-12 13:16:36,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976851851851852 [2024-05-12 13:16:36,646 INFO L175 Difference]: Start difference. First operand has 366 places, 536 transitions, 6228 flow. Second operand 9 states and 215 transitions. [2024-05-12 13:16:36,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 587 transitions, 7814 flow [2024-05-12 13:16:39,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 587 transitions, 7810 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-05-12 13:16:39,862 INFO L231 Difference]: Finished difference. Result has 372 places, 544 transitions, 6603 flow [2024-05-12 13:16:39,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6224, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6603, PETRI_PLACES=372, PETRI_TRANSITIONS=544} [2024-05-12 13:16:39,863 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 318 predicate places. [2024-05-12 13:16:39,863 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 544 transitions, 6603 flow [2024-05-12 13:16:39,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:39,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:39,864 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] [2024-05-12 13:16:39,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-05-12 13:16:39,864 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:16:39,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2142431030, now seen corresponding path program 1 times [2024-05-12 13:16:39,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:39,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163221658] [2024-05-12 13:16:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:39,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:41,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:41,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:41,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163221658] [2024-05-12 13:16:41,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163221658] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:41,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:41,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:16:41,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810990204] [2024-05-12 13:16:41,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:41,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:16:41,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:41,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:16:41,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:16:41,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:16:41,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 544 transitions, 6603 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:41,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:41,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:16:41,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:44,269 INFO L124 PetriNetUnfolderBase]: 6174/9903 cut-off events. [2024-05-12 13:16:44,269 INFO L125 PetriNetUnfolderBase]: For 948025/948052 co-relation queries the response was YES. [2024-05-12 13:16:44,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95160 conditions, 9903 events. 6174/9903 cut-off events. For 948025/948052 co-relation queries the response was YES. Maximal size of possible extension queue 475. Compared 66316 event pairs, 1471 based on Foata normal form. 29/9897 useless extension candidates. Maximal degree in co-relation 94991. Up to 8756 conditions per place. [2024-05-12 13:16:44,441 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 535 selfloop transitions, 42 changer transitions 0/588 dead transitions. [2024-05-12 13:16:44,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 588 transitions, 8159 flow [2024-05-12 13:16:44,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:16:44,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:16:44,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2024-05-12 13:16:44,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49537037037037035 [2024-05-12 13:16:44,444 INFO L175 Difference]: Start difference. First operand has 372 places, 544 transitions, 6603 flow. Second operand 9 states and 214 transitions. [2024-05-12 13:16:44,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 588 transitions, 8159 flow [2024-05-12 13:16:47,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 588 transitions, 7798 flow, removed 93 selfloop flow, removed 9 redundant places. [2024-05-12 13:16:47,750 INFO L231 Difference]: Finished difference. Result has 371 places, 548 transitions, 6511 flow [2024-05-12 13:16:47,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6242, PETRI_DIFFERENCE_MINUEND_PLACES=362, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6511, PETRI_PLACES=371, PETRI_TRANSITIONS=548} [2024-05-12 13:16:47,751 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 317 predicate places. [2024-05-12 13:16:47,751 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 548 transitions, 6511 flow [2024-05-12 13:16:47,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:47,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:47,752 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] [2024-05-12 13:16:47,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-05-12 13:16:47,752 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:16:47,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1974482186, now seen corresponding path program 2 times [2024-05-12 13:16:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:47,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141710108] [2024-05-12 13:16:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:48,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:48,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141710108] [2024-05-12 13:16:48,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141710108] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:48,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:48,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:16:48,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874357172] [2024-05-12 13:16:48,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:16:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:16:48,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:16:49,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:16:49,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 548 transitions, 6511 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:49,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:49,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:16:49,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:52,095 INFO L124 PetriNetUnfolderBase]: 6208/9952 cut-off events. [2024-05-12 13:16:52,095 INFO L125 PetriNetUnfolderBase]: For 981299/981328 co-relation queries the response was YES. [2024-05-12 13:16:52,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96214 conditions, 9952 events. 6208/9952 cut-off events. For 981299/981328 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 66631 event pairs, 1469 based on Foata normal form. 31/9847 useless extension candidates. Maximal degree in co-relation 96047. Up to 8768 conditions per place. [2024-05-12 13:16:52,265 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 538 selfloop transitions, 48 changer transitions 0/597 dead transitions. [2024-05-12 13:16:52,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 597 transitions, 8179 flow [2024-05-12 13:16:52,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:16:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:16:52,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 236 transitions. [2024-05-12 13:16:52,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-05-12 13:16:52,267 INFO L175 Difference]: Start difference. First operand has 371 places, 548 transitions, 6511 flow. Second operand 10 states and 236 transitions. [2024-05-12 13:16:52,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 597 transitions, 8179 flow [2024-05-12 13:16:55,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 597 transitions, 7938 flow, removed 81 selfloop flow, removed 7 redundant places. [2024-05-12 13:16:55,286 INFO L231 Difference]: Finished difference. Result has 374 places, 552 transitions, 6559 flow [2024-05-12 13:16:55,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6270, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6559, PETRI_PLACES=374, PETRI_TRANSITIONS=552} [2024-05-12 13:16:55,287 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 320 predicate places. [2024-05-12 13:16:55,287 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 552 transitions, 6559 flow [2024-05-12 13:16:55,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:55,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:16:55,287 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] [2024-05-12 13:16:55,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-05-12 13:16:55,287 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:16:55,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:16:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1974215276, now seen corresponding path program 3 times [2024-05-12 13:16:55,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:16:55,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034700532] [2024-05-12 13:16:55,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:16:55,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:16:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:16:56,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:16:56,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:16:56,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034700532] [2024-05-12 13:16:56,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034700532] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:16:56,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:16:56,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:16:56,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32999819] [2024-05-12 13:16:56,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:16:56,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:16:56,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:16:56,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:16:56,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:16:56,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:16:56,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 552 transitions, 6559 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:16:56,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:16:56,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:16:56,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:16:59,452 INFO L124 PetriNetUnfolderBase]: 6242/10007 cut-off events. [2024-05-12 13:16:59,452 INFO L125 PetriNetUnfolderBase]: For 1005094/1005121 co-relation queries the response was YES. [2024-05-12 13:16:59,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97428 conditions, 10007 events. 6242/10007 cut-off events. For 1005094/1005121 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 67073 event pairs, 1468 based on Foata normal form. 28/9897 useless extension candidates. Maximal degree in co-relation 97260. Up to 8773 conditions per place. [2024-05-12 13:16:59,621 INFO L140 encePairwiseOnDemand]: 35/48 looper letters, 535 selfloop transitions, 57 changer transitions 0/603 dead transitions. [2024-05-12 13:16:59,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 603 transitions, 8164 flow [2024-05-12 13:16:59,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-05-12 13:16:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-05-12 13:16:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 237 transitions. [2024-05-12 13:16:59,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49375 [2024-05-12 13:16:59,623 INFO L175 Difference]: Start difference. First operand has 374 places, 552 transitions, 6559 flow. Second operand 10 states and 237 transitions. [2024-05-12 13:16:59,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 603 transitions, 8164 flow [2024-05-12 13:17:02,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 603 transitions, 7903 flow, removed 85 selfloop flow, removed 8 redundant places. [2024-05-12 13:17:02,272 INFO L231 Difference]: Finished difference. Result has 377 places, 558 transitions, 6585 flow [2024-05-12 13:17:02,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6298, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6585, PETRI_PLACES=377, PETRI_TRANSITIONS=558} [2024-05-12 13:17:02,272 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 323 predicate places. [2024-05-12 13:17:02,272 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 558 transitions, 6585 flow [2024-05-12 13:17:02,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:17:02,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:17:02,272 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] [2024-05-12 13:17:02,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-05-12 13:17:02,273 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:17:02,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:17:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1421484207, now seen corresponding path program 2 times [2024-05-12 13:17:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:17:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123788948] [2024-05-12 13:17:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:17:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:17:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:17:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:17:03,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:17:03,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123788948] [2024-05-12 13:17:03,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123788948] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:17:03,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:17:03,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:17:03,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651038008] [2024-05-12 13:17:03,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:17:03,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:17:03,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:17:03,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:17:03,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:17:03,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:17:03,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 558 transitions, 6585 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:17:03,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:17:03,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:17:03,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-05-12 13:17:06,571 INFO L124 PetriNetUnfolderBase]: 6274/10056 cut-off events. [2024-05-12 13:17:06,572 INFO L125 PetriNetUnfolderBase]: For 1028574/1028610 co-relation queries the response was YES. [2024-05-12 13:17:06,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98501 conditions, 10056 events. 6274/10056 cut-off events. For 1028574/1028610 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 67447 event pairs, 1491 based on Foata normal form. 30/9945 useless extension candidates. Maximal degree in co-relation 98331. Up to 8609 conditions per place. [2024-05-12 13:17:06,752 INFO L140 encePairwiseOnDemand]: 36/48 looper letters, 498 selfloop transitions, 107 changer transitions 0/616 dead transitions. [2024-05-12 13:17:06,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 616 transitions, 8356 flow [2024-05-12 13:17:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-05-12 13:17:06,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-05-12 13:17:06,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 219 transitions. [2024-05-12 13:17:06,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5069444444444444 [2024-05-12 13:17:06,753 INFO L175 Difference]: Start difference. First operand has 377 places, 558 transitions, 6585 flow. Second operand 9 states and 219 transitions. [2024-05-12 13:17:06,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 616 transitions, 8356 flow [2024-05-12 13:17:09,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 616 transitions, 8148 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-05-12 13:17:09,641 INFO L231 Difference]: Finished difference. Result has 380 places, 577 transitions, 7083 flow [2024-05-12 13:17:09,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=48, PETRI_DIFFERENCE_MINUEND_FLOW=6377, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7083, PETRI_PLACES=380, PETRI_TRANSITIONS=577} [2024-05-12 13:17:09,641 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 326 predicate places. [2024-05-12 13:17:09,641 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 577 transitions, 7083 flow [2024-05-12 13:17:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:17:09,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-05-12 13:17:09,642 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] [2024-05-12 13:17:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-05-12 13:17:09,642 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 6 more)] === [2024-05-12 13:17:09,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-05-12 13:17:09,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1177794124, now seen corresponding path program 4 times [2024-05-12 13:17:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-05-12 13:17:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745608659] [2024-05-12 13:17:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-05-12 13:17:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-05-12 13:17:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-05-12 13:17:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-05-12 13:17:11,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-05-12 13:17:11,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745608659] [2024-05-12 13:17:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745608659] provided 1 perfect and 0 imperfect interpolant sequences [2024-05-12 13:17:11,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-05-12 13:17:11,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-05-12 13:17:11,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472238115] [2024-05-12 13:17:11,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-05-12 13:17:11,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-05-12 13:17:11,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-05-12 13:17:11,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-05-12 13:17:11,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-05-12 13:17:11,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 48 [2024-05-12 13:17:11,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 577 transitions, 7083 flow. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-05-12 13:17:11,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-05-12 13:17:11,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 48 [2024-05-12 13:17:11,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand